Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Kernel-based Virtual Machine driver for Linux |
| 3 | * |
| 4 | * This module enables machines with Intel VT-x extensions to run virtual |
| 5 | * machines without emulation or binary translation. |
| 6 | * |
| 7 | * Copyright (C) 2006 Qumranet, Inc. |
Nicolas Kaiser | 9611c18 | 2010-10-06 14:23:22 +0200 | [diff] [blame] | 8 | * Copyright 2010 Red Hat, Inc. and/or its affiliates. |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 9 | * |
| 10 | * Authors: |
| 11 | * Avi Kivity <avi@qumranet.com> |
| 12 | * Yaniv Kamay <yaniv@qumranet.com> |
| 13 | * |
| 14 | * This work is licensed under the terms of the GNU GPL, version 2. See |
| 15 | * the COPYING file in the top-level directory. |
| 16 | * |
| 17 | */ |
| 18 | |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 19 | #include "irq.h" |
Zhang Xiantao | 1d737c8 | 2007-12-14 09:35:10 +0800 | [diff] [blame] | 20 | #include "mmu.h" |
Avi Kivity | e495606 | 2007-06-28 14:15:57 -0400 | [diff] [blame] | 21 | |
Avi Kivity | edf8841 | 2007-12-16 11:02:48 +0200 | [diff] [blame] | 22 | #include <linux/kvm_host.h> |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 23 | #include <linux/module.h> |
Ahmed S. Darwish | 9d8f549 | 2007-02-19 14:37:46 +0200 | [diff] [blame] | 24 | #include <linux/kernel.h> |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 25 | #include <linux/mm.h> |
| 26 | #include <linux/highmem.h> |
Alexey Dobriyan | e8edc6e | 2007-05-21 01:22:52 +0400 | [diff] [blame] | 27 | #include <linux/sched.h> |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 28 | #include <linux/moduleparam.h> |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 29 | #include <linux/ftrace_event.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 30 | #include <linux/slab.h> |
Shane Wang | cafd665 | 2010-04-29 12:09:01 -0400 | [diff] [blame] | 31 | #include <linux/tboot.h> |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 32 | #include "kvm_cache_regs.h" |
Avi Kivity | 35920a3 | 2008-07-03 14:50:12 +0300 | [diff] [blame] | 33 | #include "x86.h" |
Avi Kivity | e495606 | 2007-06-28 14:15:57 -0400 | [diff] [blame] | 34 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 35 | #include <asm/io.h> |
Anthony Liguori | 3b3be0d | 2006-12-13 00:33:43 -0800 | [diff] [blame] | 36 | #include <asm/desc.h> |
Eduardo Habkost | 13673a9 | 2008-11-17 19:03:13 -0200 | [diff] [blame] | 37 | #include <asm/vmx.h> |
Eduardo Habkost | 6210e37 | 2008-11-17 19:03:16 -0200 | [diff] [blame] | 38 | #include <asm/virtext.h> |
Andi Kleen | a0861c0 | 2009-06-08 17:37:09 +0800 | [diff] [blame] | 39 | #include <asm/mce.h> |
Dexuan Cui | 2acf923 | 2010-06-10 11:27:12 +0800 | [diff] [blame] | 40 | #include <asm/i387.h> |
| 41 | #include <asm/xcr.h> |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 42 | |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 43 | #include "trace.h" |
| 44 | |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 45 | #define __ex(x) __kvm_handle_fault_on_reboot(x) |
| 46 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 47 | MODULE_AUTHOR("Qumranet"); |
| 48 | MODULE_LICENSE("GPL"); |
| 49 | |
Avi Kivity | 4462d21 | 2009-03-23 17:53:37 +0200 | [diff] [blame] | 50 | static int __read_mostly bypass_guest_pf = 1; |
Avi Kivity | c1f8bc0 | 2009-03-23 15:41:17 +0200 | [diff] [blame] | 51 | module_param(bypass_guest_pf, bool, S_IRUGO); |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 52 | |
Avi Kivity | 4462d21 | 2009-03-23 17:53:37 +0200 | [diff] [blame] | 53 | static int __read_mostly enable_vpid = 1; |
Avi Kivity | 736caef | 2009-03-23 17:39:48 +0200 | [diff] [blame] | 54 | module_param_named(vpid, enable_vpid, bool, 0444); |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 55 | |
Avi Kivity | 4462d21 | 2009-03-23 17:53:37 +0200 | [diff] [blame] | 56 | static int __read_mostly flexpriority_enabled = 1; |
Avi Kivity | 736caef | 2009-03-23 17:39:48 +0200 | [diff] [blame] | 57 | module_param_named(flexpriority, flexpriority_enabled, bool, S_IRUGO); |
Avi Kivity | 4c9fc8e | 2008-03-24 18:15:14 +0200 | [diff] [blame] | 58 | |
Avi Kivity | 4462d21 | 2009-03-23 17:53:37 +0200 | [diff] [blame] | 59 | static int __read_mostly enable_ept = 1; |
Avi Kivity | 736caef | 2009-03-23 17:39:48 +0200 | [diff] [blame] | 60 | module_param_named(ept, enable_ept, bool, S_IRUGO); |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 61 | |
Nitin A Kamble | 3a624e2 | 2009-06-08 11:34:16 -0700 | [diff] [blame] | 62 | static int __read_mostly enable_unrestricted_guest = 1; |
| 63 | module_param_named(unrestricted_guest, |
| 64 | enable_unrestricted_guest, bool, S_IRUGO); |
| 65 | |
Avi Kivity | 4462d21 | 2009-03-23 17:53:37 +0200 | [diff] [blame] | 66 | static int __read_mostly emulate_invalid_guest_state = 0; |
Avi Kivity | c1f8bc0 | 2009-03-23 15:41:17 +0200 | [diff] [blame] | 67 | module_param(emulate_invalid_guest_state, bool, S_IRUGO); |
Mohammed Gamal | 04fa4d3 | 2008-08-17 16:39:48 +0300 | [diff] [blame] | 68 | |
Dongxiao Xu | b923e62 | 2010-05-11 18:29:45 +0800 | [diff] [blame] | 69 | static int __read_mostly vmm_exclusive = 1; |
| 70 | module_param(vmm_exclusive, bool, S_IRUGO); |
| 71 | |
Anthony Liguori | 443381a | 2010-12-06 10:53:38 -0600 | [diff] [blame] | 72 | static int __read_mostly yield_on_hlt = 1; |
| 73 | module_param(yield_on_hlt, bool, S_IRUGO); |
| 74 | |
Avi Kivity | cdc0e24 | 2009-12-06 17:21:14 +0200 | [diff] [blame] | 75 | #define KVM_GUEST_CR0_MASK_UNRESTRICTED_GUEST \ |
| 76 | (X86_CR0_WP | X86_CR0_NE | X86_CR0_NW | X86_CR0_CD) |
| 77 | #define KVM_GUEST_CR0_MASK \ |
| 78 | (KVM_GUEST_CR0_MASK_UNRESTRICTED_GUEST | X86_CR0_PG | X86_CR0_PE) |
| 79 | #define KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST \ |
Avi Kivity | 81231c6 | 2010-01-24 16:26:40 +0200 | [diff] [blame] | 80 | (X86_CR0_WP | X86_CR0_NE) |
Avi Kivity | cdc0e24 | 2009-12-06 17:21:14 +0200 | [diff] [blame] | 81 | #define KVM_VM_CR0_ALWAYS_ON \ |
| 82 | (KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST | X86_CR0_PG | X86_CR0_PE) |
Avi Kivity | 4c38609 | 2009-12-07 12:26:18 +0200 | [diff] [blame] | 83 | #define KVM_CR4_GUEST_OWNED_BITS \ |
| 84 | (X86_CR4_PVI | X86_CR4_DE | X86_CR4_PCE | X86_CR4_OSFXSR \ |
| 85 | | X86_CR4_OSXMMEXCPT) |
| 86 | |
Avi Kivity | cdc0e24 | 2009-12-06 17:21:14 +0200 | [diff] [blame] | 87 | #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE) |
| 88 | #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE) |
| 89 | |
Avi Kivity | 78ac8b4 | 2010-04-08 18:19:35 +0300 | [diff] [blame] | 90 | #define RMODE_GUEST_OWNED_EFLAGS_BITS (~(X86_EFLAGS_IOPL | X86_EFLAGS_VM)) |
| 91 | |
Zhai, Edwin | 4b8d54f | 2009-10-09 18:03:20 +0800 | [diff] [blame] | 92 | /* |
| 93 | * These 2 parameters are used to config the controls for Pause-Loop Exiting: |
| 94 | * ple_gap: upper bound on the amount of time between two successive |
| 95 | * executions of PAUSE in a loop. Also indicate if ple enabled. |
| 96 | * According to test, this time is usually small than 41 cycles. |
| 97 | * ple_window: upper bound on the amount of time a guest is allowed to execute |
| 98 | * in a PAUSE loop. Tests indicate that most spinlocks are held for |
| 99 | * less than 2^12 cycles |
| 100 | * Time is measured based on a counter that runs at the same rate as the TSC, |
| 101 | * refer SDM volume 3b section 21.6.13 & 22.1.3. |
| 102 | */ |
| 103 | #define KVM_VMX_DEFAULT_PLE_GAP 41 |
| 104 | #define KVM_VMX_DEFAULT_PLE_WINDOW 4096 |
| 105 | static int ple_gap = KVM_VMX_DEFAULT_PLE_GAP; |
| 106 | module_param(ple_gap, int, S_IRUGO); |
| 107 | |
| 108 | static int ple_window = KVM_VMX_DEFAULT_PLE_WINDOW; |
| 109 | module_param(ple_window, int, S_IRUGO); |
| 110 | |
Avi Kivity | 61d2ef2 | 2010-04-28 16:40:38 +0300 | [diff] [blame] | 111 | #define NR_AUTOLOAD_MSRS 1 |
| 112 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 113 | struct vmcs { |
| 114 | u32 revision_id; |
| 115 | u32 abort; |
| 116 | char data[0]; |
| 117 | }; |
| 118 | |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 119 | struct shared_msr_entry { |
| 120 | unsigned index; |
| 121 | u64 data; |
Avi Kivity | d569672 | 2009-12-02 12:28:47 +0200 | [diff] [blame] | 122 | u64 mask; |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 123 | }; |
| 124 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 125 | struct vcpu_vmx { |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 126 | struct kvm_vcpu vcpu; |
Avi Kivity | 543e424 | 2008-05-13 16:22:47 +0300 | [diff] [blame] | 127 | struct list_head local_vcpus_link; |
Avi Kivity | 313dbd4 | 2008-07-17 18:04:30 +0300 | [diff] [blame] | 128 | unsigned long host_rsp; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 129 | int launched; |
Avi Kivity | 29bd8a7 | 2007-09-10 17:27:03 +0300 | [diff] [blame] | 130 | u8 fail; |
Avi Kivity | 51aa01d | 2010-07-20 14:31:20 +0300 | [diff] [blame] | 131 | u32 exit_intr_info; |
Avi Kivity | 1155f76 | 2007-11-22 11:30:47 +0200 | [diff] [blame] | 132 | u32 idt_vectoring_info; |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 133 | struct shared_msr_entry *guest_msrs; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 134 | int nmsrs; |
| 135 | int save_nmsrs; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 136 | #ifdef CONFIG_X86_64 |
Avi Kivity | 44ea2b1 | 2009-09-06 15:55:37 +0300 | [diff] [blame] | 137 | u64 msr_host_kernel_gs_base; |
| 138 | u64 msr_guest_kernel_gs_base; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 139 | #endif |
| 140 | struct vmcs *vmcs; |
Avi Kivity | 61d2ef2 | 2010-04-28 16:40:38 +0300 | [diff] [blame] | 141 | struct msr_autoload { |
| 142 | unsigned nr; |
| 143 | struct vmx_msr_entry guest[NR_AUTOLOAD_MSRS]; |
| 144 | struct vmx_msr_entry host[NR_AUTOLOAD_MSRS]; |
| 145 | } msr_autoload; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 146 | struct { |
| 147 | int loaded; |
| 148 | u16 fs_sel, gs_sel, ldt_sel; |
Laurent Vivier | 152d3f2 | 2007-08-23 16:33:11 +0200 | [diff] [blame] | 149 | int gs_ldt_reload_needed; |
| 150 | int fs_reload_needed; |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 151 | } host_state; |
Avi Kivity | 9c8cba3 | 2007-11-22 11:42:59 +0200 | [diff] [blame] | 152 | struct { |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 153 | int vm86_active; |
Avi Kivity | 78ac8b4 | 2010-04-08 18:19:35 +0300 | [diff] [blame] | 154 | ulong save_rflags; |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 155 | struct kvm_save_segment { |
| 156 | u16 selector; |
| 157 | unsigned long base; |
| 158 | u32 limit; |
| 159 | u32 ar; |
| 160 | } tr, es, ds, fs, gs; |
Avi Kivity | 9c8cba3 | 2007-11-22 11:42:59 +0200 | [diff] [blame] | 161 | } rmode; |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 162 | int vpid; |
Mohammed Gamal | 04fa4d3 | 2008-08-17 16:39:48 +0300 | [diff] [blame] | 163 | bool emulation_required; |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 164 | |
| 165 | /* Support for vnmi-less CPUs */ |
| 166 | int soft_vnmi_blocked; |
| 167 | ktime_t entry_time; |
| 168 | s64 vnmi_blocked_time; |
Andi Kleen | a0861c0 | 2009-06-08 17:37:09 +0800 | [diff] [blame] | 169 | u32 exit_reason; |
Sheng Yang | 4e47c7a | 2009-12-18 16:48:47 +0800 | [diff] [blame] | 170 | |
| 171 | bool rdtscp_enabled; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 172 | }; |
| 173 | |
| 174 | static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu) |
| 175 | { |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 176 | return container_of(vcpu, struct vcpu_vmx, vcpu); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 177 | } |
| 178 | |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 179 | static int init_rmode(struct kvm *kvm); |
Sheng Yang | 4e1096d | 2008-07-06 19:16:51 +0800 | [diff] [blame] | 180 | static u64 construct_eptp(unsigned long root_hpa); |
Dongxiao Xu | 4610c9c | 2010-05-11 18:29:48 +0800 | [diff] [blame] | 181 | static void kvm_cpu_vmxon(u64 addr); |
| 182 | static void kvm_cpu_vmxoff(void); |
Avi Kivity | 75880a0 | 2007-06-20 11:20:04 +0300 | [diff] [blame] | 183 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 184 | static DEFINE_PER_CPU(struct vmcs *, vmxarea); |
| 185 | static DEFINE_PER_CPU(struct vmcs *, current_vmcs); |
Avi Kivity | 543e424 | 2008-05-13 16:22:47 +0300 | [diff] [blame] | 186 | static DEFINE_PER_CPU(struct list_head, vcpus_on_cpu); |
Avi Kivity | 3444d7d | 2010-07-26 18:32:38 +0300 | [diff] [blame] | 187 | static DEFINE_PER_CPU(struct desc_ptr, host_gdt); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 188 | |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 189 | static unsigned long *vmx_io_bitmap_a; |
| 190 | static unsigned long *vmx_io_bitmap_b; |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 191 | static unsigned long *vmx_msr_bitmap_legacy; |
| 192 | static unsigned long *vmx_msr_bitmap_longmode; |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 193 | |
Avi Kivity | 110312c | 2010-12-21 12:54:20 +0200 | [diff] [blame^] | 194 | static bool cpu_has_load_ia32_efer; |
| 195 | |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 196 | static DECLARE_BITMAP(vmx_vpid_bitmap, VMX_NR_VPIDS); |
| 197 | static DEFINE_SPINLOCK(vmx_vpid_lock); |
| 198 | |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 199 | static struct vmcs_config { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 200 | int size; |
| 201 | int order; |
| 202 | u32 revision_id; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 203 | u32 pin_based_exec_ctrl; |
| 204 | u32 cpu_based_exec_ctrl; |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 205 | u32 cpu_based_2nd_exec_ctrl; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 206 | u32 vmexit_ctrl; |
| 207 | u32 vmentry_ctrl; |
| 208 | } vmcs_config; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 209 | |
Hannes Eder | efff9e5 | 2008-11-28 17:02:06 +0100 | [diff] [blame] | 210 | static struct vmx_capability { |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 211 | u32 ept; |
| 212 | u32 vpid; |
| 213 | } vmx_capability; |
| 214 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 215 | #define VMX_SEGMENT_FIELD(seg) \ |
| 216 | [VCPU_SREG_##seg] = { \ |
| 217 | .selector = GUEST_##seg##_SELECTOR, \ |
| 218 | .base = GUEST_##seg##_BASE, \ |
| 219 | .limit = GUEST_##seg##_LIMIT, \ |
| 220 | .ar_bytes = GUEST_##seg##_AR_BYTES, \ |
| 221 | } |
| 222 | |
| 223 | static struct kvm_vmx_segment_field { |
| 224 | unsigned selector; |
| 225 | unsigned base; |
| 226 | unsigned limit; |
| 227 | unsigned ar_bytes; |
| 228 | } kvm_vmx_segment_fields[] = { |
| 229 | VMX_SEGMENT_FIELD(CS), |
| 230 | VMX_SEGMENT_FIELD(DS), |
| 231 | VMX_SEGMENT_FIELD(ES), |
| 232 | VMX_SEGMENT_FIELD(FS), |
| 233 | VMX_SEGMENT_FIELD(GS), |
| 234 | VMX_SEGMENT_FIELD(SS), |
| 235 | VMX_SEGMENT_FIELD(TR), |
| 236 | VMX_SEGMENT_FIELD(LDTR), |
| 237 | }; |
| 238 | |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 239 | static u64 host_efer; |
| 240 | |
Avi Kivity | 6de4f3a | 2009-05-31 22:58:47 +0300 | [diff] [blame] | 241 | static void ept_save_pdptrs(struct kvm_vcpu *vcpu); |
| 242 | |
Avi Kivity | 4d56c8a | 2007-04-19 14:28:44 +0300 | [diff] [blame] | 243 | /* |
Brian Gerst | 8c06585 | 2010-07-17 09:03:26 -0400 | [diff] [blame] | 244 | * Keep MSR_STAR at the end, as setup_msrs() will try to optimize it |
Avi Kivity | 4d56c8a | 2007-04-19 14:28:44 +0300 | [diff] [blame] | 245 | * away by decrementing the array size. |
| 246 | */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 247 | static const u32 vmx_msr_index[] = { |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 248 | #ifdef CONFIG_X86_64 |
Avi Kivity | 44ea2b1 | 2009-09-06 15:55:37 +0300 | [diff] [blame] | 249 | MSR_SYSCALL_MASK, MSR_LSTAR, MSR_CSTAR, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 250 | #endif |
Brian Gerst | 8c06585 | 2010-07-17 09:03:26 -0400 | [diff] [blame] | 251 | MSR_EFER, MSR_TSC_AUX, MSR_STAR, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 252 | }; |
Ahmed S. Darwish | 9d8f549 | 2007-02-19 14:37:46 +0200 | [diff] [blame] | 253 | #define NR_VMX_MSR ARRAY_SIZE(vmx_msr_index) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 254 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 255 | static inline bool is_page_fault(u32 intr_info) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 256 | { |
| 257 | return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK | |
| 258 | INTR_INFO_VALID_MASK)) == |
Jan Kiszka | 8ab2d2e | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 259 | (INTR_TYPE_HARD_EXCEPTION | PF_VECTOR | INTR_INFO_VALID_MASK); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 260 | } |
| 261 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 262 | static inline bool is_no_device(u32 intr_info) |
Anthony Liguori | 2ab455c | 2007-04-27 09:29:49 +0300 | [diff] [blame] | 263 | { |
| 264 | return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK | |
| 265 | INTR_INFO_VALID_MASK)) == |
Jan Kiszka | 8ab2d2e | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 266 | (INTR_TYPE_HARD_EXCEPTION | NM_VECTOR | INTR_INFO_VALID_MASK); |
Anthony Liguori | 2ab455c | 2007-04-27 09:29:49 +0300 | [diff] [blame] | 267 | } |
| 268 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 269 | static inline bool is_invalid_opcode(u32 intr_info) |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 270 | { |
| 271 | return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK | |
| 272 | INTR_INFO_VALID_MASK)) == |
Jan Kiszka | 8ab2d2e | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 273 | (INTR_TYPE_HARD_EXCEPTION | UD_VECTOR | INTR_INFO_VALID_MASK); |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 274 | } |
| 275 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 276 | static inline bool is_external_interrupt(u32 intr_info) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 277 | { |
| 278 | return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VALID_MASK)) |
| 279 | == (INTR_TYPE_EXT_INTR | INTR_INFO_VALID_MASK); |
| 280 | } |
| 281 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 282 | static inline bool is_machine_check(u32 intr_info) |
Andi Kleen | a0861c0 | 2009-06-08 17:37:09 +0800 | [diff] [blame] | 283 | { |
| 284 | return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK | |
| 285 | INTR_INFO_VALID_MASK)) == |
| 286 | (INTR_TYPE_HARD_EXCEPTION | MC_VECTOR | INTR_INFO_VALID_MASK); |
| 287 | } |
| 288 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 289 | static inline bool cpu_has_vmx_msr_bitmap(void) |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 290 | { |
Sheng Yang | 0454715 | 2009-04-01 15:52:31 +0800 | [diff] [blame] | 291 | return vmcs_config.cpu_based_exec_ctrl & CPU_BASED_USE_MSR_BITMAPS; |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 292 | } |
| 293 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 294 | static inline bool cpu_has_vmx_tpr_shadow(void) |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 295 | { |
Sheng Yang | 0454715 | 2009-04-01 15:52:31 +0800 | [diff] [blame] | 296 | return vmcs_config.cpu_based_exec_ctrl & CPU_BASED_TPR_SHADOW; |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 297 | } |
| 298 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 299 | static inline bool vm_need_tpr_shadow(struct kvm *kvm) |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 300 | { |
Sheng Yang | 0454715 | 2009-04-01 15:52:31 +0800 | [diff] [blame] | 301 | return (cpu_has_vmx_tpr_shadow()) && (irqchip_in_kernel(kvm)); |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 302 | } |
| 303 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 304 | static inline bool cpu_has_secondary_exec_ctrls(void) |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 305 | { |
Sheng Yang | 0454715 | 2009-04-01 15:52:31 +0800 | [diff] [blame] | 306 | return vmcs_config.cpu_based_exec_ctrl & |
| 307 | CPU_BASED_ACTIVATE_SECONDARY_CONTROLS; |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 308 | } |
| 309 | |
Avi Kivity | 774ead3 | 2007-12-26 13:57:04 +0200 | [diff] [blame] | 310 | static inline bool cpu_has_vmx_virtualize_apic_accesses(void) |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 311 | { |
Sheng Yang | 0454715 | 2009-04-01 15:52:31 +0800 | [diff] [blame] | 312 | return vmcs_config.cpu_based_2nd_exec_ctrl & |
| 313 | SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES; |
| 314 | } |
| 315 | |
| 316 | static inline bool cpu_has_vmx_flexpriority(void) |
| 317 | { |
| 318 | return cpu_has_vmx_tpr_shadow() && |
| 319 | cpu_has_vmx_virtualize_apic_accesses(); |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 320 | } |
| 321 | |
Marcelo Tosatti | e799794 | 2009-06-11 12:07:40 -0300 | [diff] [blame] | 322 | static inline bool cpu_has_vmx_ept_execute_only(void) |
| 323 | { |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 324 | return vmx_capability.ept & VMX_EPT_EXECUTE_ONLY_BIT; |
Marcelo Tosatti | e799794 | 2009-06-11 12:07:40 -0300 | [diff] [blame] | 325 | } |
| 326 | |
| 327 | static inline bool cpu_has_vmx_eptp_uncacheable(void) |
| 328 | { |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 329 | return vmx_capability.ept & VMX_EPTP_UC_BIT; |
Marcelo Tosatti | e799794 | 2009-06-11 12:07:40 -0300 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | static inline bool cpu_has_vmx_eptp_writeback(void) |
| 333 | { |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 334 | return vmx_capability.ept & VMX_EPTP_WB_BIT; |
Marcelo Tosatti | e799794 | 2009-06-11 12:07:40 -0300 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | static inline bool cpu_has_vmx_ept_2m_page(void) |
| 338 | { |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 339 | return vmx_capability.ept & VMX_EPT_2MB_PAGE_BIT; |
Marcelo Tosatti | e799794 | 2009-06-11 12:07:40 -0300 | [diff] [blame] | 340 | } |
| 341 | |
Sheng Yang | 878403b | 2010-01-05 19:02:29 +0800 | [diff] [blame] | 342 | static inline bool cpu_has_vmx_ept_1g_page(void) |
| 343 | { |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 344 | return vmx_capability.ept & VMX_EPT_1GB_PAGE_BIT; |
Sheng Yang | 878403b | 2010-01-05 19:02:29 +0800 | [diff] [blame] | 345 | } |
| 346 | |
Sheng Yang | 4bc9b98 | 2010-06-02 14:05:24 +0800 | [diff] [blame] | 347 | static inline bool cpu_has_vmx_ept_4levels(void) |
| 348 | { |
| 349 | return vmx_capability.ept & VMX_EPT_PAGE_WALK_4_BIT; |
| 350 | } |
| 351 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 352 | static inline bool cpu_has_vmx_invept_individual_addr(void) |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 353 | { |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 354 | return vmx_capability.ept & VMX_EPT_EXTENT_INDIVIDUAL_BIT; |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 355 | } |
| 356 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 357 | static inline bool cpu_has_vmx_invept_context(void) |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 358 | { |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 359 | return vmx_capability.ept & VMX_EPT_EXTENT_CONTEXT_BIT; |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 360 | } |
| 361 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 362 | static inline bool cpu_has_vmx_invept_global(void) |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 363 | { |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 364 | return vmx_capability.ept & VMX_EPT_EXTENT_GLOBAL_BIT; |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 365 | } |
| 366 | |
Gui Jianfeng | 518c8ae | 2010-06-04 08:51:39 +0800 | [diff] [blame] | 367 | static inline bool cpu_has_vmx_invvpid_single(void) |
| 368 | { |
| 369 | return vmx_capability.vpid & VMX_VPID_EXTENT_SINGLE_CONTEXT_BIT; |
| 370 | } |
| 371 | |
Gui Jianfeng | b9d762f | 2010-06-07 10:32:29 +0800 | [diff] [blame] | 372 | static inline bool cpu_has_vmx_invvpid_global(void) |
| 373 | { |
| 374 | return vmx_capability.vpid & VMX_VPID_EXTENT_GLOBAL_CONTEXT_BIT; |
| 375 | } |
| 376 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 377 | static inline bool cpu_has_vmx_ept(void) |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 378 | { |
Sheng Yang | 0454715 | 2009-04-01 15:52:31 +0800 | [diff] [blame] | 379 | return vmcs_config.cpu_based_2nd_exec_ctrl & |
| 380 | SECONDARY_EXEC_ENABLE_EPT; |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 381 | } |
| 382 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 383 | static inline bool cpu_has_vmx_unrestricted_guest(void) |
Nitin A Kamble | 3a624e2 | 2009-06-08 11:34:16 -0700 | [diff] [blame] | 384 | { |
| 385 | return vmcs_config.cpu_based_2nd_exec_ctrl & |
| 386 | SECONDARY_EXEC_UNRESTRICTED_GUEST; |
| 387 | } |
| 388 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 389 | static inline bool cpu_has_vmx_ple(void) |
Zhai, Edwin | 4b8d54f | 2009-10-09 18:03:20 +0800 | [diff] [blame] | 390 | { |
| 391 | return vmcs_config.cpu_based_2nd_exec_ctrl & |
| 392 | SECONDARY_EXEC_PAUSE_LOOP_EXITING; |
| 393 | } |
| 394 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 395 | static inline bool vm_need_virtualize_apic_accesses(struct kvm *kvm) |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 396 | { |
Gui Jianfeng | 6d3e435 | 2010-01-29 15:36:59 +0800 | [diff] [blame] | 397 | return flexpriority_enabled && irqchip_in_kernel(kvm); |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 398 | } |
| 399 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 400 | static inline bool cpu_has_vmx_vpid(void) |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 401 | { |
Sheng Yang | 0454715 | 2009-04-01 15:52:31 +0800 | [diff] [blame] | 402 | return vmcs_config.cpu_based_2nd_exec_ctrl & |
| 403 | SECONDARY_EXEC_ENABLE_VPID; |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 404 | } |
| 405 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 406 | static inline bool cpu_has_vmx_rdtscp(void) |
Sheng Yang | 4e47c7a | 2009-12-18 16:48:47 +0800 | [diff] [blame] | 407 | { |
| 408 | return vmcs_config.cpu_based_2nd_exec_ctrl & |
| 409 | SECONDARY_EXEC_RDTSCP; |
| 410 | } |
| 411 | |
Gui Jianfeng | 3129994 | 2010-03-15 17:29:09 +0800 | [diff] [blame] | 412 | static inline bool cpu_has_virtual_nmis(void) |
Sheng Yang | f08864b | 2008-05-15 18:23:25 +0800 | [diff] [blame] | 413 | { |
| 414 | return vmcs_config.pin_based_exec_ctrl & PIN_BASED_VIRTUAL_NMIS; |
| 415 | } |
| 416 | |
Sheng Yang | f5f48ee | 2010-06-30 12:25:15 +0800 | [diff] [blame] | 417 | static inline bool cpu_has_vmx_wbinvd_exit(void) |
| 418 | { |
| 419 | return vmcs_config.cpu_based_2nd_exec_ctrl & |
| 420 | SECONDARY_EXEC_WBINVD_EXITING; |
| 421 | } |
| 422 | |
Sheng Yang | 0454715 | 2009-04-01 15:52:31 +0800 | [diff] [blame] | 423 | static inline bool report_flexpriority(void) |
| 424 | { |
| 425 | return flexpriority_enabled; |
| 426 | } |
| 427 | |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 428 | static int __find_msr_index(struct vcpu_vmx *vmx, u32 msr) |
Avi Kivity | 7725f0b | 2006-12-13 00:34:01 -0800 | [diff] [blame] | 429 | { |
| 430 | int i; |
| 431 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 432 | for (i = 0; i < vmx->nmsrs; ++i) |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 433 | if (vmx_msr_index[vmx->guest_msrs[i].index] == msr) |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 434 | return i; |
| 435 | return -1; |
| 436 | } |
| 437 | |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 438 | static inline void __invvpid(int ext, u16 vpid, gva_t gva) |
| 439 | { |
| 440 | struct { |
| 441 | u64 vpid : 16; |
| 442 | u64 rsvd : 48; |
| 443 | u64 gva; |
| 444 | } operand = { vpid, 0, gva }; |
| 445 | |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 446 | asm volatile (__ex(ASM_VMX_INVVPID) |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 447 | /* CF==1 or ZF==1 --> rc = -1 */ |
| 448 | "; ja 1f ; ud2 ; 1:" |
| 449 | : : "a"(&operand), "c"(ext) : "cc", "memory"); |
| 450 | } |
| 451 | |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 452 | static inline void __invept(int ext, u64 eptp, gpa_t gpa) |
| 453 | { |
| 454 | struct { |
| 455 | u64 eptp, gpa; |
| 456 | } operand = {eptp, gpa}; |
| 457 | |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 458 | asm volatile (__ex(ASM_VMX_INVEPT) |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 459 | /* CF==1 or ZF==1 --> rc = -1 */ |
| 460 | "; ja 1f ; ud2 ; 1:\n" |
| 461 | : : "a" (&operand), "c" (ext) : "cc", "memory"); |
| 462 | } |
| 463 | |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 464 | static struct shared_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr) |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 465 | { |
| 466 | int i; |
| 467 | |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 468 | i = __find_msr_index(vmx, msr); |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 469 | if (i >= 0) |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 470 | return &vmx->guest_msrs[i]; |
Al Viro | 8b6d44c | 2007-02-09 16:38:40 +0000 | [diff] [blame] | 471 | return NULL; |
Avi Kivity | 7725f0b | 2006-12-13 00:34:01 -0800 | [diff] [blame] | 472 | } |
| 473 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 474 | static void vmcs_clear(struct vmcs *vmcs) |
| 475 | { |
| 476 | u64 phys_addr = __pa(vmcs); |
| 477 | u8 error; |
| 478 | |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 479 | asm volatile (__ex(ASM_VMX_VMCLEAR_RAX) "; setna %0" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 480 | : "=g"(error) : "a"(&phys_addr), "m"(phys_addr) |
| 481 | : "cc", "memory"); |
| 482 | if (error) |
| 483 | printk(KERN_ERR "kvm: vmclear fail: %p/%llx\n", |
| 484 | vmcs, phys_addr); |
| 485 | } |
| 486 | |
Dongxiao Xu | 7725b89 | 2010-05-11 18:29:38 +0800 | [diff] [blame] | 487 | static void vmcs_load(struct vmcs *vmcs) |
| 488 | { |
| 489 | u64 phys_addr = __pa(vmcs); |
| 490 | u8 error; |
| 491 | |
| 492 | asm volatile (__ex(ASM_VMX_VMPTRLD_RAX) "; setna %0" |
| 493 | : "=g"(error) : "a"(&phys_addr), "m"(phys_addr) |
| 494 | : "cc", "memory"); |
| 495 | if (error) |
| 496 | printk(KERN_ERR "kvm: vmptrld %p/%llx fail\n", |
| 497 | vmcs, phys_addr); |
| 498 | } |
| 499 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 500 | static void __vcpu_clear(void *arg) |
| 501 | { |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 502 | struct vcpu_vmx *vmx = arg; |
Ingo Molnar | d3b2c33 | 2007-01-05 16:36:23 -0800 | [diff] [blame] | 503 | int cpu = raw_smp_processor_id(); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 504 | |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 505 | if (vmx->vcpu.cpu == cpu) |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 506 | vmcs_clear(vmx->vmcs); |
| 507 | if (per_cpu(current_vmcs, cpu) == vmx->vmcs) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 508 | per_cpu(current_vmcs, cpu) = NULL; |
Avi Kivity | 543e424 | 2008-05-13 16:22:47 +0300 | [diff] [blame] | 509 | list_del(&vmx->local_vcpus_link); |
| 510 | vmx->vcpu.cpu = -1; |
| 511 | vmx->launched = 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 512 | } |
| 513 | |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 514 | static void vcpu_clear(struct vcpu_vmx *vmx) |
Avi Kivity | 8d0be2b | 2007-02-12 00:54:46 -0800 | [diff] [blame] | 515 | { |
Avi Kivity | eae5ecb | 2007-09-30 10:50:12 +0200 | [diff] [blame] | 516 | if (vmx->vcpu.cpu == -1) |
| 517 | return; |
Jens Axboe | 8691e5a | 2008-06-06 11:18:06 +0200 | [diff] [blame] | 518 | smp_call_function_single(vmx->vcpu.cpu, __vcpu_clear, vmx, 1); |
Avi Kivity | 8d0be2b | 2007-02-12 00:54:46 -0800 | [diff] [blame] | 519 | } |
| 520 | |
Gui Jianfeng | 1760dd4 | 2010-06-07 10:33:27 +0800 | [diff] [blame] | 521 | static inline void vpid_sync_vcpu_single(struct vcpu_vmx *vmx) |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 522 | { |
| 523 | if (vmx->vpid == 0) |
| 524 | return; |
| 525 | |
Gui Jianfeng | 518c8ae | 2010-06-04 08:51:39 +0800 | [diff] [blame] | 526 | if (cpu_has_vmx_invvpid_single()) |
| 527 | __invvpid(VMX_VPID_EXTENT_SINGLE_CONTEXT, vmx->vpid, 0); |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 528 | } |
| 529 | |
Gui Jianfeng | b9d762f | 2010-06-07 10:32:29 +0800 | [diff] [blame] | 530 | static inline void vpid_sync_vcpu_global(void) |
| 531 | { |
| 532 | if (cpu_has_vmx_invvpid_global()) |
| 533 | __invvpid(VMX_VPID_EXTENT_ALL_CONTEXT, 0, 0); |
| 534 | } |
| 535 | |
| 536 | static inline void vpid_sync_context(struct vcpu_vmx *vmx) |
| 537 | { |
| 538 | if (cpu_has_vmx_invvpid_single()) |
Gui Jianfeng | 1760dd4 | 2010-06-07 10:33:27 +0800 | [diff] [blame] | 539 | vpid_sync_vcpu_single(vmx); |
Gui Jianfeng | b9d762f | 2010-06-07 10:32:29 +0800 | [diff] [blame] | 540 | else |
| 541 | vpid_sync_vcpu_global(); |
| 542 | } |
| 543 | |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 544 | static inline void ept_sync_global(void) |
| 545 | { |
| 546 | if (cpu_has_vmx_invept_global()) |
| 547 | __invept(VMX_EPT_EXTENT_GLOBAL, 0, 0); |
| 548 | } |
| 549 | |
| 550 | static inline void ept_sync_context(u64 eptp) |
| 551 | { |
Avi Kivity | 089d034 | 2009-03-23 18:26:32 +0200 | [diff] [blame] | 552 | if (enable_ept) { |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 553 | if (cpu_has_vmx_invept_context()) |
| 554 | __invept(VMX_EPT_EXTENT_CONTEXT, eptp, 0); |
| 555 | else |
| 556 | ept_sync_global(); |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | static inline void ept_sync_individual_addr(u64 eptp, gpa_t gpa) |
| 561 | { |
Avi Kivity | 089d034 | 2009-03-23 18:26:32 +0200 | [diff] [blame] | 562 | if (enable_ept) { |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 563 | if (cpu_has_vmx_invept_individual_addr()) |
| 564 | __invept(VMX_EPT_EXTENT_INDIVIDUAL_ADDR, |
| 565 | eptp, gpa); |
| 566 | else |
| 567 | ept_sync_context(eptp); |
| 568 | } |
| 569 | } |
| 570 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 571 | static unsigned long vmcs_readl(unsigned long field) |
| 572 | { |
Avi Kivity | a295673 | 2010-12-02 17:55:23 +0200 | [diff] [blame] | 573 | unsigned long value = 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 574 | |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 575 | asm volatile (__ex(ASM_VMX_VMREAD_RDX_RAX) |
Avi Kivity | a295673 | 2010-12-02 17:55:23 +0200 | [diff] [blame] | 576 | : "+a"(value) : "d"(field) : "cc"); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 577 | return value; |
| 578 | } |
| 579 | |
| 580 | static u16 vmcs_read16(unsigned long field) |
| 581 | { |
| 582 | return vmcs_readl(field); |
| 583 | } |
| 584 | |
| 585 | static u32 vmcs_read32(unsigned long field) |
| 586 | { |
| 587 | return vmcs_readl(field); |
| 588 | } |
| 589 | |
| 590 | static u64 vmcs_read64(unsigned long field) |
| 591 | { |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 592 | #ifdef CONFIG_X86_64 |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 593 | return vmcs_readl(field); |
| 594 | #else |
| 595 | return vmcs_readl(field) | ((u64)vmcs_readl(field+1) << 32); |
| 596 | #endif |
| 597 | } |
| 598 | |
Avi Kivity | e52de1b | 2007-01-05 16:36:56 -0800 | [diff] [blame] | 599 | static noinline void vmwrite_error(unsigned long field, unsigned long value) |
| 600 | { |
| 601 | printk(KERN_ERR "vmwrite error: reg %lx value %lx (err %d)\n", |
| 602 | field, value, vmcs_read32(VM_INSTRUCTION_ERROR)); |
| 603 | dump_stack(); |
| 604 | } |
| 605 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 606 | static void vmcs_writel(unsigned long field, unsigned long value) |
| 607 | { |
| 608 | u8 error; |
| 609 | |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 610 | asm volatile (__ex(ASM_VMX_VMWRITE_RAX_RDX) "; setna %0" |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 611 | : "=q"(error) : "a"(value), "d"(field) : "cc"); |
Avi Kivity | e52de1b | 2007-01-05 16:36:56 -0800 | [diff] [blame] | 612 | if (unlikely(error)) |
| 613 | vmwrite_error(field, value); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 614 | } |
| 615 | |
| 616 | static void vmcs_write16(unsigned long field, u16 value) |
| 617 | { |
| 618 | vmcs_writel(field, value); |
| 619 | } |
| 620 | |
| 621 | static void vmcs_write32(unsigned long field, u32 value) |
| 622 | { |
| 623 | vmcs_writel(field, value); |
| 624 | } |
| 625 | |
| 626 | static void vmcs_write64(unsigned long field, u64 value) |
| 627 | { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 628 | vmcs_writel(field, value); |
Avi Kivity | 7682f2d | 2008-05-12 19:25:43 +0300 | [diff] [blame] | 629 | #ifndef CONFIG_X86_64 |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 630 | asm volatile (""); |
| 631 | vmcs_writel(field+1, value >> 32); |
| 632 | #endif |
| 633 | } |
| 634 | |
Anthony Liguori | 2ab455c | 2007-04-27 09:29:49 +0300 | [diff] [blame] | 635 | static void vmcs_clear_bits(unsigned long field, u32 mask) |
| 636 | { |
| 637 | vmcs_writel(field, vmcs_readl(field) & ~mask); |
| 638 | } |
| 639 | |
| 640 | static void vmcs_set_bits(unsigned long field, u32 mask) |
| 641 | { |
| 642 | vmcs_writel(field, vmcs_readl(field) | mask); |
| 643 | } |
| 644 | |
Avi Kivity | abd3f2d | 2007-05-02 17:57:40 +0300 | [diff] [blame] | 645 | static void update_exception_bitmap(struct kvm_vcpu *vcpu) |
| 646 | { |
| 647 | u32 eb; |
| 648 | |
Jan Kiszka | fd7373c | 2010-01-20 18:20:20 +0100 | [diff] [blame] | 649 | eb = (1u << PF_VECTOR) | (1u << UD_VECTOR) | (1u << MC_VECTOR) | |
| 650 | (1u << NM_VECTOR) | (1u << DB_VECTOR); |
| 651 | if ((vcpu->guest_debug & |
| 652 | (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP)) == |
| 653 | (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP)) |
| 654 | eb |= 1u << BP_VECTOR; |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 655 | if (to_vmx(vcpu)->rmode.vm86_active) |
Avi Kivity | abd3f2d | 2007-05-02 17:57:40 +0300 | [diff] [blame] | 656 | eb = ~0; |
Avi Kivity | 089d034 | 2009-03-23 18:26:32 +0200 | [diff] [blame] | 657 | if (enable_ept) |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 658 | eb &= ~(1u << PF_VECTOR); /* bypass_guest_pf = 0 */ |
Avi Kivity | 02daab2 | 2009-12-30 12:40:26 +0200 | [diff] [blame] | 659 | if (vcpu->fpu_active) |
| 660 | eb &= ~(1u << NM_VECTOR); |
Avi Kivity | abd3f2d | 2007-05-02 17:57:40 +0300 | [diff] [blame] | 661 | vmcs_write32(EXCEPTION_BITMAP, eb); |
| 662 | } |
| 663 | |
Avi Kivity | 61d2ef2 | 2010-04-28 16:40:38 +0300 | [diff] [blame] | 664 | static void clear_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr) |
| 665 | { |
| 666 | unsigned i; |
| 667 | struct msr_autoload *m = &vmx->msr_autoload; |
| 668 | |
Avi Kivity | 110312c | 2010-12-21 12:54:20 +0200 | [diff] [blame^] | 669 | if (msr == MSR_EFER && cpu_has_load_ia32_efer) { |
| 670 | vmcs_clear_bits(VM_ENTRY_CONTROLS, VM_ENTRY_LOAD_IA32_EFER); |
| 671 | vmcs_clear_bits(VM_EXIT_CONTROLS, VM_EXIT_LOAD_IA32_EFER); |
| 672 | return; |
| 673 | } |
| 674 | |
Avi Kivity | 61d2ef2 | 2010-04-28 16:40:38 +0300 | [diff] [blame] | 675 | for (i = 0; i < m->nr; ++i) |
| 676 | if (m->guest[i].index == msr) |
| 677 | break; |
| 678 | |
| 679 | if (i == m->nr) |
| 680 | return; |
| 681 | --m->nr; |
| 682 | m->guest[i] = m->guest[m->nr]; |
| 683 | m->host[i] = m->host[m->nr]; |
| 684 | vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->nr); |
| 685 | vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->nr); |
| 686 | } |
| 687 | |
| 688 | static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr, |
| 689 | u64 guest_val, u64 host_val) |
| 690 | { |
| 691 | unsigned i; |
| 692 | struct msr_autoload *m = &vmx->msr_autoload; |
| 693 | |
Avi Kivity | 110312c | 2010-12-21 12:54:20 +0200 | [diff] [blame^] | 694 | if (msr == MSR_EFER && cpu_has_load_ia32_efer) { |
| 695 | vmcs_write64(GUEST_IA32_EFER, guest_val); |
| 696 | vmcs_write64(HOST_IA32_EFER, host_val); |
| 697 | vmcs_set_bits(VM_ENTRY_CONTROLS, VM_ENTRY_LOAD_IA32_EFER); |
| 698 | vmcs_set_bits(VM_EXIT_CONTROLS, VM_EXIT_LOAD_IA32_EFER); |
| 699 | return; |
| 700 | } |
| 701 | |
Avi Kivity | 61d2ef2 | 2010-04-28 16:40:38 +0300 | [diff] [blame] | 702 | for (i = 0; i < m->nr; ++i) |
| 703 | if (m->guest[i].index == msr) |
| 704 | break; |
| 705 | |
| 706 | if (i == m->nr) { |
| 707 | ++m->nr; |
| 708 | vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->nr); |
| 709 | vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->nr); |
| 710 | } |
| 711 | |
| 712 | m->guest[i].index = msr; |
| 713 | m->guest[i].value = guest_val; |
| 714 | m->host[i].index = msr; |
| 715 | m->host[i].value = host_val; |
| 716 | } |
| 717 | |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 718 | static void reload_tss(void) |
| 719 | { |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 720 | /* |
| 721 | * VT restores TR but not its size. Useless. |
| 722 | */ |
Avi Kivity | d359192 | 2010-07-26 18:32:39 +0300 | [diff] [blame] | 723 | struct desc_ptr *gdt = &__get_cpu_var(host_gdt); |
Avi Kivity | a5f6130 | 2008-02-20 17:57:21 +0200 | [diff] [blame] | 724 | struct desc_struct *descs; |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 725 | |
Avi Kivity | d359192 | 2010-07-26 18:32:39 +0300 | [diff] [blame] | 726 | descs = (void *)gdt->address; |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 727 | descs[GDT_ENTRY_TSS].type = 9; /* available TSS */ |
| 728 | load_TR_desc(); |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 729 | } |
| 730 | |
Avi Kivity | 92c0d90 | 2009-10-29 11:00:16 +0200 | [diff] [blame] | 731 | static bool update_transition_efer(struct vcpu_vmx *vmx, int efer_offset) |
Eddie Dong | 2cc5156 | 2007-05-21 07:28:09 +0300 | [diff] [blame] | 732 | { |
Roel Kluin | 3a34a88 | 2009-08-04 02:08:45 -0700 | [diff] [blame] | 733 | u64 guest_efer; |
Avi Kivity | 51c6cf6 | 2007-08-29 03:48:05 +0300 | [diff] [blame] | 734 | u64 ignore_bits; |
Eddie Dong | 2cc5156 | 2007-05-21 07:28:09 +0300 | [diff] [blame] | 735 | |
Avi Kivity | f6801df | 2010-01-21 15:31:50 +0200 | [diff] [blame] | 736 | guest_efer = vmx->vcpu.arch.efer; |
Roel Kluin | 3a34a88 | 2009-08-04 02:08:45 -0700 | [diff] [blame] | 737 | |
Avi Kivity | 51c6cf6 | 2007-08-29 03:48:05 +0300 | [diff] [blame] | 738 | /* |
| 739 | * NX is emulated; LMA and LME handled by hardware; SCE meaninless |
| 740 | * outside long mode |
| 741 | */ |
| 742 | ignore_bits = EFER_NX | EFER_SCE; |
| 743 | #ifdef CONFIG_X86_64 |
| 744 | ignore_bits |= EFER_LMA | EFER_LME; |
| 745 | /* SCE is meaningful only in long mode on Intel */ |
| 746 | if (guest_efer & EFER_LMA) |
| 747 | ignore_bits &= ~(u64)EFER_SCE; |
| 748 | #endif |
Avi Kivity | 51c6cf6 | 2007-08-29 03:48:05 +0300 | [diff] [blame] | 749 | guest_efer &= ~ignore_bits; |
| 750 | guest_efer |= host_efer & ignore_bits; |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 751 | vmx->guest_msrs[efer_offset].data = guest_efer; |
Avi Kivity | d569672 | 2009-12-02 12:28:47 +0200 | [diff] [blame] | 752 | vmx->guest_msrs[efer_offset].mask = ~ignore_bits; |
Avi Kivity | 84ad33e | 2010-04-28 16:42:29 +0300 | [diff] [blame] | 753 | |
| 754 | clear_atomic_switch_msr(vmx, MSR_EFER); |
| 755 | /* On ept, can't emulate nx, and must switch nx atomically */ |
| 756 | if (enable_ept && ((vmx->vcpu.arch.efer ^ host_efer) & EFER_NX)) { |
| 757 | guest_efer = vmx->vcpu.arch.efer; |
| 758 | if (!(guest_efer & EFER_LMA)) |
| 759 | guest_efer &= ~EFER_LME; |
| 760 | add_atomic_switch_msr(vmx, MSR_EFER, guest_efer, host_efer); |
| 761 | return false; |
| 762 | } |
| 763 | |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 764 | return true; |
Avi Kivity | 51c6cf6 | 2007-08-29 03:48:05 +0300 | [diff] [blame] | 765 | } |
| 766 | |
Gleb Natapov | 2d49ec7 | 2010-02-25 12:43:09 +0200 | [diff] [blame] | 767 | static unsigned long segment_base(u16 selector) |
| 768 | { |
Avi Kivity | d359192 | 2010-07-26 18:32:39 +0300 | [diff] [blame] | 769 | struct desc_ptr *gdt = &__get_cpu_var(host_gdt); |
Gleb Natapov | 2d49ec7 | 2010-02-25 12:43:09 +0200 | [diff] [blame] | 770 | struct desc_struct *d; |
| 771 | unsigned long table_base; |
| 772 | unsigned long v; |
| 773 | |
| 774 | if (!(selector & ~3)) |
| 775 | return 0; |
| 776 | |
Avi Kivity | d359192 | 2010-07-26 18:32:39 +0300 | [diff] [blame] | 777 | table_base = gdt->address; |
Gleb Natapov | 2d49ec7 | 2010-02-25 12:43:09 +0200 | [diff] [blame] | 778 | |
| 779 | if (selector & 4) { /* from ldt */ |
| 780 | u16 ldt_selector = kvm_read_ldt(); |
| 781 | |
| 782 | if (!(ldt_selector & ~3)) |
| 783 | return 0; |
| 784 | |
| 785 | table_base = segment_base(ldt_selector); |
| 786 | } |
| 787 | d = (struct desc_struct *)(table_base + (selector & ~7)); |
| 788 | v = get_desc_base(d); |
| 789 | #ifdef CONFIG_X86_64 |
| 790 | if (d->s == 0 && (d->type == 2 || d->type == 9 || d->type == 11)) |
| 791 | v |= ((unsigned long)((struct ldttss_desc64 *)d)->base3) << 32; |
| 792 | #endif |
| 793 | return v; |
| 794 | } |
| 795 | |
| 796 | static inline unsigned long kvm_read_tr_base(void) |
| 797 | { |
| 798 | u16 tr; |
| 799 | asm("str %0" : "=g"(tr)); |
| 800 | return segment_base(tr); |
| 801 | } |
| 802 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 803 | static void vmx_save_host_state(struct kvm_vcpu *vcpu) |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 804 | { |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 805 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 806 | int i; |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 807 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 808 | if (vmx->host_state.loaded) |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 809 | return; |
| 810 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 811 | vmx->host_state.loaded = 1; |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 812 | /* |
| 813 | * Set host fs and gs selectors. Unfortunately, 22.2.3 does not |
| 814 | * allow segment selectors with cpl > 0 or ti == 1. |
| 815 | */ |
Avi Kivity | d6e88ae | 2008-07-10 16:53:33 +0300 | [diff] [blame] | 816 | vmx->host_state.ldt_sel = kvm_read_ldt(); |
Laurent Vivier | 152d3f2 | 2007-08-23 16:33:11 +0200 | [diff] [blame] | 817 | vmx->host_state.gs_ldt_reload_needed = vmx->host_state.ldt_sel; |
Avi Kivity | 9581d44 | 2010-10-19 16:46:55 +0200 | [diff] [blame] | 818 | savesegment(fs, vmx->host_state.fs_sel); |
Laurent Vivier | 152d3f2 | 2007-08-23 16:33:11 +0200 | [diff] [blame] | 819 | if (!(vmx->host_state.fs_sel & 7)) { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 820 | vmcs_write16(HOST_FS_SELECTOR, vmx->host_state.fs_sel); |
Laurent Vivier | 152d3f2 | 2007-08-23 16:33:11 +0200 | [diff] [blame] | 821 | vmx->host_state.fs_reload_needed = 0; |
| 822 | } else { |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 823 | vmcs_write16(HOST_FS_SELECTOR, 0); |
Laurent Vivier | 152d3f2 | 2007-08-23 16:33:11 +0200 | [diff] [blame] | 824 | vmx->host_state.fs_reload_needed = 1; |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 825 | } |
Avi Kivity | 9581d44 | 2010-10-19 16:46:55 +0200 | [diff] [blame] | 826 | savesegment(gs, vmx->host_state.gs_sel); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 827 | if (!(vmx->host_state.gs_sel & 7)) |
| 828 | vmcs_write16(HOST_GS_SELECTOR, vmx->host_state.gs_sel); |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 829 | else { |
| 830 | vmcs_write16(HOST_GS_SELECTOR, 0); |
Laurent Vivier | 152d3f2 | 2007-08-23 16:33:11 +0200 | [diff] [blame] | 831 | vmx->host_state.gs_ldt_reload_needed = 1; |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 832 | } |
| 833 | |
| 834 | #ifdef CONFIG_X86_64 |
| 835 | vmcs_writel(HOST_FS_BASE, read_msr(MSR_FS_BASE)); |
| 836 | vmcs_writel(HOST_GS_BASE, read_msr(MSR_GS_BASE)); |
| 837 | #else |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 838 | vmcs_writel(HOST_FS_BASE, segment_base(vmx->host_state.fs_sel)); |
| 839 | vmcs_writel(HOST_GS_BASE, segment_base(vmx->host_state.gs_sel)); |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 840 | #endif |
Avi Kivity | 707c087 | 2007-05-02 17:33:43 +0300 | [diff] [blame] | 841 | |
| 842 | #ifdef CONFIG_X86_64 |
Avi Kivity | c8770e7 | 2010-11-11 12:37:26 +0200 | [diff] [blame] | 843 | rdmsrl(MSR_KERNEL_GS_BASE, vmx->msr_host_kernel_gs_base); |
| 844 | if (is_long_mode(&vmx->vcpu)) |
Avi Kivity | 44ea2b1 | 2009-09-06 15:55:37 +0300 | [diff] [blame] | 845 | wrmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base); |
Avi Kivity | 707c087 | 2007-05-02 17:33:43 +0300 | [diff] [blame] | 846 | #endif |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 847 | for (i = 0; i < vmx->save_nmsrs; ++i) |
| 848 | kvm_set_shared_msr(vmx->guest_msrs[i].index, |
Avi Kivity | d569672 | 2009-12-02 12:28:47 +0200 | [diff] [blame] | 849 | vmx->guest_msrs[i].data, |
| 850 | vmx->guest_msrs[i].mask); |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 851 | } |
| 852 | |
Avi Kivity | a9b21b6 | 2008-06-24 11:48:49 +0300 | [diff] [blame] | 853 | static void __vmx_load_host_state(struct vcpu_vmx *vmx) |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 854 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 855 | if (!vmx->host_state.loaded) |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 856 | return; |
| 857 | |
Avi Kivity | e1beb1d | 2007-11-18 13:50:24 +0200 | [diff] [blame] | 858 | ++vmx->vcpu.stat.host_state_reload; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 859 | vmx->host_state.loaded = 0; |
Avi Kivity | c8770e7 | 2010-11-11 12:37:26 +0200 | [diff] [blame] | 860 | #ifdef CONFIG_X86_64 |
| 861 | if (is_long_mode(&vmx->vcpu)) |
| 862 | rdmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base); |
| 863 | #endif |
Laurent Vivier | 152d3f2 | 2007-08-23 16:33:11 +0200 | [diff] [blame] | 864 | if (vmx->host_state.gs_ldt_reload_needed) { |
Avi Kivity | d6e88ae | 2008-07-10 16:53:33 +0300 | [diff] [blame] | 865 | kvm_load_ldt(vmx->host_state.ldt_sel); |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 866 | #ifdef CONFIG_X86_64 |
Avi Kivity | 9581d44 | 2010-10-19 16:46:55 +0200 | [diff] [blame] | 867 | load_gs_index(vmx->host_state.gs_sel); |
Avi Kivity | 9581d44 | 2010-10-19 16:46:55 +0200 | [diff] [blame] | 868 | #else |
| 869 | loadsegment(gs, vmx->host_state.gs_sel); |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 870 | #endif |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 871 | } |
Avi Kivity | 0a77fe4 | 2010-10-19 18:48:35 +0200 | [diff] [blame] | 872 | if (vmx->host_state.fs_reload_needed) |
| 873 | loadsegment(fs, vmx->host_state.fs_sel); |
Laurent Vivier | 152d3f2 | 2007-08-23 16:33:11 +0200 | [diff] [blame] | 874 | reload_tss(); |
Avi Kivity | 44ea2b1 | 2009-09-06 15:55:37 +0300 | [diff] [blame] | 875 | #ifdef CONFIG_X86_64 |
Avi Kivity | c8770e7 | 2010-11-11 12:37:26 +0200 | [diff] [blame] | 876 | wrmsrl(MSR_KERNEL_GS_BASE, vmx->msr_host_kernel_gs_base); |
Avi Kivity | 44ea2b1 | 2009-09-06 15:55:37 +0300 | [diff] [blame] | 877 | #endif |
Avi Kivity | 1c11e71 | 2010-05-03 16:05:44 +0300 | [diff] [blame] | 878 | if (current_thread_info()->status & TS_USEDFPU) |
| 879 | clts(); |
Avi Kivity | 3444d7d | 2010-07-26 18:32:38 +0300 | [diff] [blame] | 880 | load_gdt(&__get_cpu_var(host_gdt)); |
Avi Kivity | 33ed632 | 2007-05-02 16:54:03 +0300 | [diff] [blame] | 881 | } |
| 882 | |
Avi Kivity | a9b21b6 | 2008-06-24 11:48:49 +0300 | [diff] [blame] | 883 | static void vmx_load_host_state(struct vcpu_vmx *vmx) |
| 884 | { |
| 885 | preempt_disable(); |
| 886 | __vmx_load_host_state(vmx); |
| 887 | preempt_enable(); |
| 888 | } |
| 889 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 890 | /* |
| 891 | * Switches to specified vcpu, until a matching vcpu_put(), but assumes |
| 892 | * vcpu mutex is already taken. |
| 893 | */ |
Avi Kivity | 15ad714 | 2007-07-11 18:17:21 +0300 | [diff] [blame] | 894 | static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 895 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 896 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Dongxiao Xu | 4610c9c | 2010-05-11 18:29:48 +0800 | [diff] [blame] | 897 | u64 phys_addr = __pa(per_cpu(vmxarea, cpu)); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 898 | |
Dongxiao Xu | 4610c9c | 2010-05-11 18:29:48 +0800 | [diff] [blame] | 899 | if (!vmm_exclusive) |
| 900 | kvm_cpu_vmxon(phys_addr); |
| 901 | else if (vcpu->cpu != cpu) |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 902 | vcpu_clear(vmx); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 903 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 904 | if (per_cpu(current_vmcs, cpu) != vmx->vmcs) { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 905 | per_cpu(current_vmcs, cpu) = vmx->vmcs; |
Dongxiao Xu | 7725b89 | 2010-05-11 18:29:38 +0800 | [diff] [blame] | 906 | vmcs_load(vmx->vmcs); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 907 | } |
| 908 | |
| 909 | if (vcpu->cpu != cpu) { |
Avi Kivity | d359192 | 2010-07-26 18:32:39 +0300 | [diff] [blame] | 910 | struct desc_ptr *gdt = &__get_cpu_var(host_gdt); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 911 | unsigned long sysenter_esp; |
| 912 | |
Avi Kivity | a8eeb04 | 2010-05-10 12:34:53 +0300 | [diff] [blame] | 913 | kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); |
Dongxiao Xu | 92fe13b | 2010-05-11 18:29:42 +0800 | [diff] [blame] | 914 | local_irq_disable(); |
| 915 | list_add(&vmx->local_vcpus_link, |
| 916 | &per_cpu(vcpus_on_cpu, cpu)); |
| 917 | local_irq_enable(); |
| 918 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 919 | /* |
| 920 | * Linux uses per-cpu TSS and GDT, so set these when switching |
| 921 | * processors. |
| 922 | */ |
Avi Kivity | d6e88ae | 2008-07-10 16:53:33 +0300 | [diff] [blame] | 923 | vmcs_writel(HOST_TR_BASE, kvm_read_tr_base()); /* 22.2.4 */ |
Avi Kivity | d359192 | 2010-07-26 18:32:39 +0300 | [diff] [blame] | 924 | vmcs_writel(HOST_GDTR_BASE, gdt->address); /* 22.2.4 */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 925 | |
| 926 | rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp); |
| 927 | vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */ |
| 928 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 929 | } |
| 930 | |
| 931 | static void vmx_vcpu_put(struct kvm_vcpu *vcpu) |
| 932 | { |
Avi Kivity | a9b21b6 | 2008-06-24 11:48:49 +0300 | [diff] [blame] | 933 | __vmx_load_host_state(to_vmx(vcpu)); |
Dongxiao Xu | 4610c9c | 2010-05-11 18:29:48 +0800 | [diff] [blame] | 934 | if (!vmm_exclusive) { |
Dongxiao Xu | b923e62 | 2010-05-11 18:29:45 +0800 | [diff] [blame] | 935 | __vcpu_clear(to_vmx(vcpu)); |
Dongxiao Xu | 4610c9c | 2010-05-11 18:29:48 +0800 | [diff] [blame] | 936 | kvm_cpu_vmxoff(); |
| 937 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 938 | } |
| 939 | |
Avi Kivity | 5fd86fc | 2007-05-02 20:40:00 +0300 | [diff] [blame] | 940 | static void vmx_fpu_activate(struct kvm_vcpu *vcpu) |
| 941 | { |
Avi Kivity | 81231c6 | 2010-01-24 16:26:40 +0200 | [diff] [blame] | 942 | ulong cr0; |
| 943 | |
Avi Kivity | 5fd86fc | 2007-05-02 20:40:00 +0300 | [diff] [blame] | 944 | if (vcpu->fpu_active) |
| 945 | return; |
| 946 | vcpu->fpu_active = 1; |
Avi Kivity | 81231c6 | 2010-01-24 16:26:40 +0200 | [diff] [blame] | 947 | cr0 = vmcs_readl(GUEST_CR0); |
| 948 | cr0 &= ~(X86_CR0_TS | X86_CR0_MP); |
| 949 | cr0 |= kvm_read_cr0_bits(vcpu, X86_CR0_TS | X86_CR0_MP); |
| 950 | vmcs_writel(GUEST_CR0, cr0); |
Avi Kivity | 5fd86fc | 2007-05-02 20:40:00 +0300 | [diff] [blame] | 951 | update_exception_bitmap(vcpu); |
Avi Kivity | edcafe3 | 2009-12-30 18:07:40 +0200 | [diff] [blame] | 952 | vcpu->arch.cr0_guest_owned_bits = X86_CR0_TS; |
| 953 | vmcs_writel(CR0_GUEST_HOST_MASK, ~vcpu->arch.cr0_guest_owned_bits); |
Avi Kivity | 5fd86fc | 2007-05-02 20:40:00 +0300 | [diff] [blame] | 954 | } |
| 955 | |
Avi Kivity | edcafe3 | 2009-12-30 18:07:40 +0200 | [diff] [blame] | 956 | static void vmx_decache_cr0_guest_bits(struct kvm_vcpu *vcpu); |
| 957 | |
Avi Kivity | 5fd86fc | 2007-05-02 20:40:00 +0300 | [diff] [blame] | 958 | static void vmx_fpu_deactivate(struct kvm_vcpu *vcpu) |
| 959 | { |
Avi Kivity | edcafe3 | 2009-12-30 18:07:40 +0200 | [diff] [blame] | 960 | vmx_decache_cr0_guest_bits(vcpu); |
Avi Kivity | 81231c6 | 2010-01-24 16:26:40 +0200 | [diff] [blame] | 961 | vmcs_set_bits(GUEST_CR0, X86_CR0_TS | X86_CR0_MP); |
Avi Kivity | 5fd86fc | 2007-05-02 20:40:00 +0300 | [diff] [blame] | 962 | update_exception_bitmap(vcpu); |
Avi Kivity | edcafe3 | 2009-12-30 18:07:40 +0200 | [diff] [blame] | 963 | vcpu->arch.cr0_guest_owned_bits = 0; |
| 964 | vmcs_writel(CR0_GUEST_HOST_MASK, ~vcpu->arch.cr0_guest_owned_bits); |
| 965 | vmcs_writel(CR0_READ_SHADOW, vcpu->arch.cr0); |
Avi Kivity | 5fd86fc | 2007-05-02 20:40:00 +0300 | [diff] [blame] | 966 | } |
| 967 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 968 | static unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu) |
| 969 | { |
Avi Kivity | 78ac8b4 | 2010-04-08 18:19:35 +0300 | [diff] [blame] | 970 | unsigned long rflags, save_rflags; |
Avi Kivity | 345dcaa | 2009-08-12 15:29:37 +0300 | [diff] [blame] | 971 | |
| 972 | rflags = vmcs_readl(GUEST_RFLAGS); |
Avi Kivity | 78ac8b4 | 2010-04-08 18:19:35 +0300 | [diff] [blame] | 973 | if (to_vmx(vcpu)->rmode.vm86_active) { |
| 974 | rflags &= RMODE_GUEST_OWNED_EFLAGS_BITS; |
| 975 | save_rflags = to_vmx(vcpu)->rmode.save_rflags; |
| 976 | rflags |= save_rflags & ~RMODE_GUEST_OWNED_EFLAGS_BITS; |
| 977 | } |
Avi Kivity | 345dcaa | 2009-08-12 15:29:37 +0300 | [diff] [blame] | 978 | return rflags; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 979 | } |
| 980 | |
| 981 | static void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags) |
| 982 | { |
Avi Kivity | 78ac8b4 | 2010-04-08 18:19:35 +0300 | [diff] [blame] | 983 | if (to_vmx(vcpu)->rmode.vm86_active) { |
| 984 | to_vmx(vcpu)->rmode.save_rflags = rflags; |
Glauber de Oliveira Costa | 053de04 | 2008-01-30 13:31:27 +0100 | [diff] [blame] | 985 | rflags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM; |
Avi Kivity | 78ac8b4 | 2010-04-08 18:19:35 +0300 | [diff] [blame] | 986 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 987 | vmcs_writel(GUEST_RFLAGS, rflags); |
| 988 | } |
| 989 | |
Glauber Costa | 2809f5d | 2009-05-12 16:21:05 -0400 | [diff] [blame] | 990 | static u32 vmx_get_interrupt_shadow(struct kvm_vcpu *vcpu, int mask) |
| 991 | { |
| 992 | u32 interruptibility = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO); |
| 993 | int ret = 0; |
| 994 | |
| 995 | if (interruptibility & GUEST_INTR_STATE_STI) |
Jan Kiszka | 48005f6 | 2010-02-19 19:38:07 +0100 | [diff] [blame] | 996 | ret |= KVM_X86_SHADOW_INT_STI; |
Glauber Costa | 2809f5d | 2009-05-12 16:21:05 -0400 | [diff] [blame] | 997 | if (interruptibility & GUEST_INTR_STATE_MOV_SS) |
Jan Kiszka | 48005f6 | 2010-02-19 19:38:07 +0100 | [diff] [blame] | 998 | ret |= KVM_X86_SHADOW_INT_MOV_SS; |
Glauber Costa | 2809f5d | 2009-05-12 16:21:05 -0400 | [diff] [blame] | 999 | |
| 1000 | return ret & mask; |
| 1001 | } |
| 1002 | |
| 1003 | static void vmx_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask) |
| 1004 | { |
| 1005 | u32 interruptibility_old = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO); |
| 1006 | u32 interruptibility = interruptibility_old; |
| 1007 | |
| 1008 | interruptibility &= ~(GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS); |
| 1009 | |
Jan Kiszka | 48005f6 | 2010-02-19 19:38:07 +0100 | [diff] [blame] | 1010 | if (mask & KVM_X86_SHADOW_INT_MOV_SS) |
Glauber Costa | 2809f5d | 2009-05-12 16:21:05 -0400 | [diff] [blame] | 1011 | interruptibility |= GUEST_INTR_STATE_MOV_SS; |
Jan Kiszka | 48005f6 | 2010-02-19 19:38:07 +0100 | [diff] [blame] | 1012 | else if (mask & KVM_X86_SHADOW_INT_STI) |
Glauber Costa | 2809f5d | 2009-05-12 16:21:05 -0400 | [diff] [blame] | 1013 | interruptibility |= GUEST_INTR_STATE_STI; |
| 1014 | |
| 1015 | if ((interruptibility != interruptibility_old)) |
| 1016 | vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, interruptibility); |
| 1017 | } |
| 1018 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1019 | static void skip_emulated_instruction(struct kvm_vcpu *vcpu) |
| 1020 | { |
| 1021 | unsigned long rip; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1022 | |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 1023 | rip = kvm_rip_read(vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1024 | rip += vmcs_read32(VM_EXIT_INSTRUCTION_LEN); |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 1025 | kvm_rip_write(vcpu, rip); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1026 | |
Glauber Costa | 2809f5d | 2009-05-12 16:21:05 -0400 | [diff] [blame] | 1027 | /* skipping an emulated instruction also counts */ |
| 1028 | vmx_set_interrupt_shadow(vcpu, 0); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1029 | } |
| 1030 | |
Anthony Liguori | 443381a | 2010-12-06 10:53:38 -0600 | [diff] [blame] | 1031 | static void vmx_clear_hlt(struct kvm_vcpu *vcpu) |
| 1032 | { |
| 1033 | /* Ensure that we clear the HLT state in the VMCS. We don't need to |
| 1034 | * explicitly skip the instruction because if the HLT state is set, then |
| 1035 | * the instruction is already executing and RIP has already been |
| 1036 | * advanced. */ |
| 1037 | if (!yield_on_hlt && |
| 1038 | vmcs_read32(GUEST_ACTIVITY_STATE) == GUEST_ACTIVITY_HLT) |
| 1039 | vmcs_write32(GUEST_ACTIVITY_STATE, GUEST_ACTIVITY_ACTIVE); |
| 1040 | } |
| 1041 | |
Avi Kivity | 298101d | 2007-11-25 13:41:11 +0200 | [diff] [blame] | 1042 | static void vmx_queue_exception(struct kvm_vcpu *vcpu, unsigned nr, |
Joerg Roedel | ce7ddec | 2010-04-22 12:33:13 +0200 | [diff] [blame] | 1043 | bool has_error_code, u32 error_code, |
| 1044 | bool reinject) |
Avi Kivity | 298101d | 2007-11-25 13:41:11 +0200 | [diff] [blame] | 1045 | { |
Jan Kiszka | 77ab6db | 2008-07-14 12:28:51 +0200 | [diff] [blame] | 1046 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Jan Kiszka | 8ab2d2e | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 1047 | u32 intr_info = nr | INTR_INFO_VALID_MASK; |
Jan Kiszka | 77ab6db | 2008-07-14 12:28:51 +0200 | [diff] [blame] | 1048 | |
Jan Kiszka | 8ab2d2e | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 1049 | if (has_error_code) { |
Jan Kiszka | 77ab6db | 2008-07-14 12:28:51 +0200 | [diff] [blame] | 1050 | vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, error_code); |
Jan Kiszka | 8ab2d2e | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 1051 | intr_info |= INTR_INFO_DELIVER_CODE_MASK; |
| 1052 | } |
Jan Kiszka | 77ab6db | 2008-07-14 12:28:51 +0200 | [diff] [blame] | 1053 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1054 | if (vmx->rmode.vm86_active) { |
Mohammed Gamal | a92601b | 2010-09-19 14:34:07 +0200 | [diff] [blame] | 1055 | if (kvm_inject_realmode_interrupt(vcpu, nr) != EMULATE_DONE) |
| 1056 | kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu); |
Jan Kiszka | 77ab6db | 2008-07-14 12:28:51 +0200 | [diff] [blame] | 1057 | return; |
| 1058 | } |
| 1059 | |
Gleb Natapov | 66fd3f7 | 2009-05-11 13:35:50 +0300 | [diff] [blame] | 1060 | if (kvm_exception_is_soft(nr)) { |
| 1061 | vmcs_write32(VM_ENTRY_INSTRUCTION_LEN, |
| 1062 | vmx->vcpu.arch.event_exit_inst_len); |
Jan Kiszka | 8ab2d2e | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 1063 | intr_info |= INTR_TYPE_SOFT_EXCEPTION; |
| 1064 | } else |
| 1065 | intr_info |= INTR_TYPE_HARD_EXCEPTION; |
| 1066 | |
| 1067 | vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr_info); |
Anthony Liguori | 443381a | 2010-12-06 10:53:38 -0600 | [diff] [blame] | 1068 | vmx_clear_hlt(vcpu); |
Avi Kivity | 298101d | 2007-11-25 13:41:11 +0200 | [diff] [blame] | 1069 | } |
| 1070 | |
Sheng Yang | 4e47c7a | 2009-12-18 16:48:47 +0800 | [diff] [blame] | 1071 | static bool vmx_rdtscp_supported(void) |
| 1072 | { |
| 1073 | return cpu_has_vmx_rdtscp(); |
| 1074 | } |
| 1075 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1076 | /* |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 1077 | * Swap MSR entry in host/guest MSR entry array. |
| 1078 | */ |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 1079 | static void move_msr_up(struct vcpu_vmx *vmx, int from, int to) |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 1080 | { |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 1081 | struct shared_msr_entry tmp; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1082 | |
| 1083 | tmp = vmx->guest_msrs[to]; |
| 1084 | vmx->guest_msrs[to] = vmx->guest_msrs[from]; |
| 1085 | vmx->guest_msrs[from] = tmp; |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 1086 | } |
| 1087 | |
| 1088 | /* |
Avi Kivity | e38aea3 | 2007-04-19 13:22:48 +0300 | [diff] [blame] | 1089 | * Set up the vmcs to automatically save and restore system |
| 1090 | * msrs. Don't touch the 64-bit msrs if the guest is in legacy |
| 1091 | * mode, as fiddling with msrs is very expensive. |
| 1092 | */ |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 1093 | static void setup_msrs(struct vcpu_vmx *vmx) |
Avi Kivity | e38aea3 | 2007-04-19 13:22:48 +0300 | [diff] [blame] | 1094 | { |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 1095 | int save_nmsrs, index; |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 1096 | unsigned long *msr_bitmap; |
Avi Kivity | e38aea3 | 2007-04-19 13:22:48 +0300 | [diff] [blame] | 1097 | |
Avi Kivity | 33f9c50 | 2008-02-27 16:06:57 +0200 | [diff] [blame] | 1098 | vmx_load_host_state(vmx); |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 1099 | save_nmsrs = 0; |
Avi Kivity | 4d56c8a | 2007-04-19 14:28:44 +0300 | [diff] [blame] | 1100 | #ifdef CONFIG_X86_64 |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 1101 | if (is_long_mode(&vmx->vcpu)) { |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 1102 | index = __find_msr_index(vmx, MSR_SYSCALL_MASK); |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 1103 | if (index >= 0) |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 1104 | move_msr_up(vmx, index, save_nmsrs++); |
| 1105 | index = __find_msr_index(vmx, MSR_LSTAR); |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 1106 | if (index >= 0) |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 1107 | move_msr_up(vmx, index, save_nmsrs++); |
| 1108 | index = __find_msr_index(vmx, MSR_CSTAR); |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 1109 | if (index >= 0) |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 1110 | move_msr_up(vmx, index, save_nmsrs++); |
Sheng Yang | 4e47c7a | 2009-12-18 16:48:47 +0800 | [diff] [blame] | 1111 | index = __find_msr_index(vmx, MSR_TSC_AUX); |
| 1112 | if (index >= 0 && vmx->rdtscp_enabled) |
| 1113 | move_msr_up(vmx, index, save_nmsrs++); |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 1114 | /* |
Brian Gerst | 8c06585 | 2010-07-17 09:03:26 -0400 | [diff] [blame] | 1115 | * MSR_STAR is only needed on long mode guests, and only |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 1116 | * if efer.sce is enabled. |
| 1117 | */ |
Brian Gerst | 8c06585 | 2010-07-17 09:03:26 -0400 | [diff] [blame] | 1118 | index = __find_msr_index(vmx, MSR_STAR); |
Avi Kivity | f6801df | 2010-01-21 15:31:50 +0200 | [diff] [blame] | 1119 | if ((index >= 0) && (vmx->vcpu.arch.efer & EFER_SCE)) |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 1120 | move_msr_up(vmx, index, save_nmsrs++); |
Avi Kivity | 4d56c8a | 2007-04-19 14:28:44 +0300 | [diff] [blame] | 1121 | } |
Eddie Dong | a75beee | 2007-05-17 18:55:15 +0300 | [diff] [blame] | 1122 | #endif |
Avi Kivity | 92c0d90 | 2009-10-29 11:00:16 +0200 | [diff] [blame] | 1123 | index = __find_msr_index(vmx, MSR_EFER); |
| 1124 | if (index >= 0 && update_transition_efer(vmx, index)) |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 1125 | move_msr_up(vmx, index, save_nmsrs++); |
Avi Kivity | 4d56c8a | 2007-04-19 14:28:44 +0300 | [diff] [blame] | 1126 | |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 1127 | vmx->save_nmsrs = save_nmsrs; |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 1128 | |
| 1129 | if (cpu_has_vmx_msr_bitmap()) { |
| 1130 | if (is_long_mode(&vmx->vcpu)) |
| 1131 | msr_bitmap = vmx_msr_bitmap_longmode; |
| 1132 | else |
| 1133 | msr_bitmap = vmx_msr_bitmap_legacy; |
| 1134 | |
| 1135 | vmcs_write64(MSR_BITMAP, __pa(msr_bitmap)); |
| 1136 | } |
Avi Kivity | e38aea3 | 2007-04-19 13:22:48 +0300 | [diff] [blame] | 1137 | } |
| 1138 | |
| 1139 | /* |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1140 | * reads and returns guest's timestamp counter "register" |
| 1141 | * guest_tsc = host_tsc + tsc_offset -- 21.3 |
| 1142 | */ |
| 1143 | static u64 guest_read_tsc(void) |
| 1144 | { |
| 1145 | u64 host_tsc, tsc_offset; |
| 1146 | |
| 1147 | rdtscll(host_tsc); |
| 1148 | tsc_offset = vmcs_read64(TSC_OFFSET); |
| 1149 | return host_tsc + tsc_offset; |
| 1150 | } |
| 1151 | |
| 1152 | /* |
Zachary Amsden | 99e3e30 | 2010-08-19 22:07:17 -1000 | [diff] [blame] | 1153 | * writes 'offset' into guest's timestamp counter offset register |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1154 | */ |
Zachary Amsden | 99e3e30 | 2010-08-19 22:07:17 -1000 | [diff] [blame] | 1155 | static void vmx_write_tsc_offset(struct kvm_vcpu *vcpu, u64 offset) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1156 | { |
Zachary Amsden | f4e1b3c | 2010-08-19 22:07:16 -1000 | [diff] [blame] | 1157 | vmcs_write64(TSC_OFFSET, offset); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1158 | } |
| 1159 | |
Zachary Amsden | e48672f | 2010-08-19 22:07:23 -1000 | [diff] [blame] | 1160 | static void vmx_adjust_tsc_offset(struct kvm_vcpu *vcpu, s64 adjustment) |
| 1161 | { |
| 1162 | u64 offset = vmcs_read64(TSC_OFFSET); |
| 1163 | vmcs_write64(TSC_OFFSET, offset + adjustment); |
| 1164 | } |
| 1165 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1166 | /* |
| 1167 | * Reads an msr value (of 'msr_index') into 'pdata'. |
| 1168 | * Returns 0 on success, non-0 otherwise. |
| 1169 | * Assumes vcpu_load() was already called. |
| 1170 | */ |
| 1171 | static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata) |
| 1172 | { |
| 1173 | u64 data; |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 1174 | struct shared_msr_entry *msr; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1175 | |
| 1176 | if (!pdata) { |
| 1177 | printk(KERN_ERR "BUG: get_msr called with NULL pdata\n"); |
| 1178 | return -EINVAL; |
| 1179 | } |
| 1180 | |
| 1181 | switch (msr_index) { |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 1182 | #ifdef CONFIG_X86_64 |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1183 | case MSR_FS_BASE: |
| 1184 | data = vmcs_readl(GUEST_FS_BASE); |
| 1185 | break; |
| 1186 | case MSR_GS_BASE: |
| 1187 | data = vmcs_readl(GUEST_GS_BASE); |
| 1188 | break; |
Avi Kivity | 44ea2b1 | 2009-09-06 15:55:37 +0300 | [diff] [blame] | 1189 | case MSR_KERNEL_GS_BASE: |
| 1190 | vmx_load_host_state(to_vmx(vcpu)); |
| 1191 | data = to_vmx(vcpu)->msr_guest_kernel_gs_base; |
| 1192 | break; |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 1193 | #endif |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1194 | case MSR_EFER: |
Avi Kivity | 3bab1f5 | 2006-12-29 16:49:48 -0800 | [diff] [blame] | 1195 | return kvm_get_msr_common(vcpu, msr_index, pdata); |
Jaswinder Singh Rajput | af24a4e | 2009-05-15 18:42:05 +0530 | [diff] [blame] | 1196 | case MSR_IA32_TSC: |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1197 | data = guest_read_tsc(); |
| 1198 | break; |
| 1199 | case MSR_IA32_SYSENTER_CS: |
| 1200 | data = vmcs_read32(GUEST_SYSENTER_CS); |
| 1201 | break; |
| 1202 | case MSR_IA32_SYSENTER_EIP: |
Avi Kivity | f5b42c3 | 2007-03-06 12:05:53 +0200 | [diff] [blame] | 1203 | data = vmcs_readl(GUEST_SYSENTER_EIP); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1204 | break; |
| 1205 | case MSR_IA32_SYSENTER_ESP: |
Avi Kivity | f5b42c3 | 2007-03-06 12:05:53 +0200 | [diff] [blame] | 1206 | data = vmcs_readl(GUEST_SYSENTER_ESP); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1207 | break; |
Sheng Yang | 4e47c7a | 2009-12-18 16:48:47 +0800 | [diff] [blame] | 1208 | case MSR_TSC_AUX: |
| 1209 | if (!to_vmx(vcpu)->rdtscp_enabled) |
| 1210 | return 1; |
| 1211 | /* Otherwise falls through */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1212 | default: |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 1213 | vmx_load_host_state(to_vmx(vcpu)); |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 1214 | msr = find_msr_entry(to_vmx(vcpu), msr_index); |
Avi Kivity | 3bab1f5 | 2006-12-29 16:49:48 -0800 | [diff] [blame] | 1215 | if (msr) { |
Gleb Natapov | 542423b | 2009-08-27 15:07:30 +0300 | [diff] [blame] | 1216 | vmx_load_host_state(to_vmx(vcpu)); |
Avi Kivity | 3bab1f5 | 2006-12-29 16:49:48 -0800 | [diff] [blame] | 1217 | data = msr->data; |
| 1218 | break; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1219 | } |
Avi Kivity | 3bab1f5 | 2006-12-29 16:49:48 -0800 | [diff] [blame] | 1220 | return kvm_get_msr_common(vcpu, msr_index, pdata); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1221 | } |
| 1222 | |
| 1223 | *pdata = data; |
| 1224 | return 0; |
| 1225 | } |
| 1226 | |
| 1227 | /* |
| 1228 | * Writes msr value into into the appropriate "register". |
| 1229 | * Returns 0 on success, non-0 otherwise. |
| 1230 | * Assumes vcpu_load() was already called. |
| 1231 | */ |
| 1232 | static int vmx_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data) |
| 1233 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1234 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 1235 | struct shared_msr_entry *msr; |
Eddie Dong | 2cc5156 | 2007-05-21 07:28:09 +0300 | [diff] [blame] | 1236 | int ret = 0; |
| 1237 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1238 | switch (msr_index) { |
Avi Kivity | 3bab1f5 | 2006-12-29 16:49:48 -0800 | [diff] [blame] | 1239 | case MSR_EFER: |
Avi Kivity | a9b21b6 | 2008-06-24 11:48:49 +0300 | [diff] [blame] | 1240 | vmx_load_host_state(vmx); |
Eddie Dong | 2cc5156 | 2007-05-21 07:28:09 +0300 | [diff] [blame] | 1241 | ret = kvm_set_msr_common(vcpu, msr_index, data); |
Eddie Dong | 2cc5156 | 2007-05-21 07:28:09 +0300 | [diff] [blame] | 1242 | break; |
Avi Kivity | 16175a7 | 2009-03-23 22:13:44 +0200 | [diff] [blame] | 1243 | #ifdef CONFIG_X86_64 |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1244 | case MSR_FS_BASE: |
| 1245 | vmcs_writel(GUEST_FS_BASE, data); |
| 1246 | break; |
| 1247 | case MSR_GS_BASE: |
| 1248 | vmcs_writel(GUEST_GS_BASE, data); |
| 1249 | break; |
Avi Kivity | 44ea2b1 | 2009-09-06 15:55:37 +0300 | [diff] [blame] | 1250 | case MSR_KERNEL_GS_BASE: |
| 1251 | vmx_load_host_state(vmx); |
| 1252 | vmx->msr_guest_kernel_gs_base = data; |
| 1253 | break; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1254 | #endif |
| 1255 | case MSR_IA32_SYSENTER_CS: |
| 1256 | vmcs_write32(GUEST_SYSENTER_CS, data); |
| 1257 | break; |
| 1258 | case MSR_IA32_SYSENTER_EIP: |
Avi Kivity | f5b42c3 | 2007-03-06 12:05:53 +0200 | [diff] [blame] | 1259 | vmcs_writel(GUEST_SYSENTER_EIP, data); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1260 | break; |
| 1261 | case MSR_IA32_SYSENTER_ESP: |
Avi Kivity | f5b42c3 | 2007-03-06 12:05:53 +0200 | [diff] [blame] | 1262 | vmcs_writel(GUEST_SYSENTER_ESP, data); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1263 | break; |
Jaswinder Singh Rajput | af24a4e | 2009-05-15 18:42:05 +0530 | [diff] [blame] | 1264 | case MSR_IA32_TSC: |
Zachary Amsden | 99e3e30 | 2010-08-19 22:07:17 -1000 | [diff] [blame] | 1265 | kvm_write_tsc(vcpu, data); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1266 | break; |
Sheng Yang | 468d472 | 2008-10-09 16:01:55 +0800 | [diff] [blame] | 1267 | case MSR_IA32_CR_PAT: |
| 1268 | if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT) { |
| 1269 | vmcs_write64(GUEST_IA32_PAT, data); |
| 1270 | vcpu->arch.pat = data; |
| 1271 | break; |
| 1272 | } |
Sheng Yang | 4e47c7a | 2009-12-18 16:48:47 +0800 | [diff] [blame] | 1273 | ret = kvm_set_msr_common(vcpu, msr_index, data); |
| 1274 | break; |
| 1275 | case MSR_TSC_AUX: |
| 1276 | if (!vmx->rdtscp_enabled) |
| 1277 | return 1; |
| 1278 | /* Check reserved bit, higher 32 bits should be zero */ |
| 1279 | if ((data >> 32) != 0) |
| 1280 | return 1; |
| 1281 | /* Otherwise falls through */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1282 | default: |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 1283 | msr = find_msr_entry(vmx, msr_index); |
Avi Kivity | 3bab1f5 | 2006-12-29 16:49:48 -0800 | [diff] [blame] | 1284 | if (msr) { |
Gleb Natapov | 542423b | 2009-08-27 15:07:30 +0300 | [diff] [blame] | 1285 | vmx_load_host_state(vmx); |
Avi Kivity | 3bab1f5 | 2006-12-29 16:49:48 -0800 | [diff] [blame] | 1286 | msr->data = data; |
| 1287 | break; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1288 | } |
Eddie Dong | 2cc5156 | 2007-05-21 07:28:09 +0300 | [diff] [blame] | 1289 | ret = kvm_set_msr_common(vcpu, msr_index, data); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1290 | } |
| 1291 | |
Eddie Dong | 2cc5156 | 2007-05-21 07:28:09 +0300 | [diff] [blame] | 1292 | return ret; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1293 | } |
| 1294 | |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 1295 | static void vmx_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1296 | { |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 1297 | __set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail); |
| 1298 | switch (reg) { |
| 1299 | case VCPU_REGS_RSP: |
| 1300 | vcpu->arch.regs[VCPU_REGS_RSP] = vmcs_readl(GUEST_RSP); |
| 1301 | break; |
| 1302 | case VCPU_REGS_RIP: |
| 1303 | vcpu->arch.regs[VCPU_REGS_RIP] = vmcs_readl(GUEST_RIP); |
| 1304 | break; |
Avi Kivity | 6de4f3a | 2009-05-31 22:58:47 +0300 | [diff] [blame] | 1305 | case VCPU_EXREG_PDPTR: |
| 1306 | if (enable_ept) |
| 1307 | ept_save_pdptrs(vcpu); |
| 1308 | break; |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 1309 | default: |
| 1310 | break; |
| 1311 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1312 | } |
| 1313 | |
Jan Kiszka | 355be0b | 2009-10-03 00:31:21 +0200 | [diff] [blame] | 1314 | static void set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1315 | { |
Jan Kiszka | ae675ef | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 1316 | if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) |
| 1317 | vmcs_writel(GUEST_DR7, dbg->arch.debugreg[7]); |
| 1318 | else |
| 1319 | vmcs_writel(GUEST_DR7, vcpu->arch.dr7); |
| 1320 | |
Avi Kivity | abd3f2d | 2007-05-02 17:57:40 +0300 | [diff] [blame] | 1321 | update_exception_bitmap(vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1322 | } |
| 1323 | |
| 1324 | static __init int cpu_has_kvm_support(void) |
| 1325 | { |
Eduardo Habkost | 6210e37 | 2008-11-17 19:03:16 -0200 | [diff] [blame] | 1326 | return cpu_has_vmx(); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1327 | } |
| 1328 | |
| 1329 | static __init int vmx_disabled_by_bios(void) |
| 1330 | { |
| 1331 | u64 msr; |
| 1332 | |
| 1333 | rdmsrl(MSR_IA32_FEATURE_CONTROL, msr); |
Shane Wang | cafd665 | 2010-04-29 12:09:01 -0400 | [diff] [blame] | 1334 | if (msr & FEATURE_CONTROL_LOCKED) { |
| 1335 | if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX) |
| 1336 | && tboot_enabled()) |
| 1337 | return 1; |
| 1338 | if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX) |
Shane Wang | f9335af | 2010-11-17 11:40:17 +0800 | [diff] [blame] | 1339 | && !tboot_enabled()) { |
| 1340 | printk(KERN_WARNING "kvm: disable TXT in the BIOS or " |
| 1341 | " activate TXT before enabling KVM\n"); |
Shane Wang | cafd665 | 2010-04-29 12:09:01 -0400 | [diff] [blame] | 1342 | return 1; |
Shane Wang | f9335af | 2010-11-17 11:40:17 +0800 | [diff] [blame] | 1343 | } |
Shane Wang | cafd665 | 2010-04-29 12:09:01 -0400 | [diff] [blame] | 1344 | } |
| 1345 | |
| 1346 | return 0; |
Yang, Sheng | 62b3ffb | 2007-07-25 12:17:06 +0300 | [diff] [blame] | 1347 | /* locked but not enabled */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1348 | } |
| 1349 | |
Dongxiao Xu | 7725b89 | 2010-05-11 18:29:38 +0800 | [diff] [blame] | 1350 | static void kvm_cpu_vmxon(u64 addr) |
| 1351 | { |
| 1352 | asm volatile (ASM_VMX_VMXON_RAX |
| 1353 | : : "a"(&addr), "m"(addr) |
| 1354 | : "memory", "cc"); |
| 1355 | } |
| 1356 | |
Alexander Graf | 10474ae | 2009-09-15 11:37:46 +0200 | [diff] [blame] | 1357 | static int hardware_enable(void *garbage) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1358 | { |
| 1359 | int cpu = raw_smp_processor_id(); |
| 1360 | u64 phys_addr = __pa(per_cpu(vmxarea, cpu)); |
Shane Wang | cafd665 | 2010-04-29 12:09:01 -0400 | [diff] [blame] | 1361 | u64 old, test_bits; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1362 | |
Alexander Graf | 10474ae | 2009-09-15 11:37:46 +0200 | [diff] [blame] | 1363 | if (read_cr4() & X86_CR4_VMXE) |
| 1364 | return -EBUSY; |
| 1365 | |
Avi Kivity | 543e424 | 2008-05-13 16:22:47 +0300 | [diff] [blame] | 1366 | INIT_LIST_HEAD(&per_cpu(vcpus_on_cpu, cpu)); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1367 | rdmsrl(MSR_IA32_FEATURE_CONTROL, old); |
Shane Wang | cafd665 | 2010-04-29 12:09:01 -0400 | [diff] [blame] | 1368 | |
| 1369 | test_bits = FEATURE_CONTROL_LOCKED; |
| 1370 | test_bits |= FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX; |
| 1371 | if (tboot_enabled()) |
| 1372 | test_bits |= FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX; |
| 1373 | |
| 1374 | if ((old & test_bits) != test_bits) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1375 | /* enable and lock */ |
Shane Wang | cafd665 | 2010-04-29 12:09:01 -0400 | [diff] [blame] | 1376 | wrmsrl(MSR_IA32_FEATURE_CONTROL, old | test_bits); |
| 1377 | } |
Rusty Russell | 66aee91 | 2007-07-17 23:34:16 +1000 | [diff] [blame] | 1378 | write_cr4(read_cr4() | X86_CR4_VMXE); /* FIXME: not cpu hotplug safe */ |
Alexander Graf | 10474ae | 2009-09-15 11:37:46 +0200 | [diff] [blame] | 1379 | |
Dongxiao Xu | 4610c9c | 2010-05-11 18:29:48 +0800 | [diff] [blame] | 1380 | if (vmm_exclusive) { |
| 1381 | kvm_cpu_vmxon(phys_addr); |
| 1382 | ept_sync_global(); |
| 1383 | } |
Alexander Graf | 10474ae | 2009-09-15 11:37:46 +0200 | [diff] [blame] | 1384 | |
Avi Kivity | 3444d7d | 2010-07-26 18:32:38 +0300 | [diff] [blame] | 1385 | store_gdt(&__get_cpu_var(host_gdt)); |
| 1386 | |
Alexander Graf | 10474ae | 2009-09-15 11:37:46 +0200 | [diff] [blame] | 1387 | return 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1388 | } |
| 1389 | |
Avi Kivity | 543e424 | 2008-05-13 16:22:47 +0300 | [diff] [blame] | 1390 | static void vmclear_local_vcpus(void) |
| 1391 | { |
| 1392 | int cpu = raw_smp_processor_id(); |
| 1393 | struct vcpu_vmx *vmx, *n; |
| 1394 | |
| 1395 | list_for_each_entry_safe(vmx, n, &per_cpu(vcpus_on_cpu, cpu), |
| 1396 | local_vcpus_link) |
| 1397 | __vcpu_clear(vmx); |
| 1398 | } |
| 1399 | |
Eduardo Habkost | 710ff4a | 2008-11-17 19:03:18 -0200 | [diff] [blame] | 1400 | |
| 1401 | /* Just like cpu_vmxoff(), but with the __kvm_handle_fault_on_reboot() |
| 1402 | * tricks. |
| 1403 | */ |
| 1404 | static void kvm_cpu_vmxoff(void) |
| 1405 | { |
| 1406 | asm volatile (__ex(ASM_VMX_VMXOFF) : : : "cc"); |
Eduardo Habkost | 710ff4a | 2008-11-17 19:03:18 -0200 | [diff] [blame] | 1407 | } |
| 1408 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1409 | static void hardware_disable(void *garbage) |
| 1410 | { |
Dongxiao Xu | 4610c9c | 2010-05-11 18:29:48 +0800 | [diff] [blame] | 1411 | if (vmm_exclusive) { |
| 1412 | vmclear_local_vcpus(); |
| 1413 | kvm_cpu_vmxoff(); |
| 1414 | } |
Dongxiao Xu | 7725b89 | 2010-05-11 18:29:38 +0800 | [diff] [blame] | 1415 | write_cr4(read_cr4() & ~X86_CR4_VMXE); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1416 | } |
| 1417 | |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1418 | static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt, |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 1419 | u32 msr, u32 *result) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1420 | { |
| 1421 | u32 vmx_msr_low, vmx_msr_high; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1422 | u32 ctl = ctl_min | ctl_opt; |
| 1423 | |
| 1424 | rdmsr(msr, vmx_msr_low, vmx_msr_high); |
| 1425 | |
| 1426 | ctl &= vmx_msr_high; /* bit == 0 in high word ==> must be zero */ |
| 1427 | ctl |= vmx_msr_low; /* bit == 1 in low word ==> must be one */ |
| 1428 | |
| 1429 | /* Ensure minimum (required) set of control bits are supported. */ |
| 1430 | if (ctl_min & ~ctl) |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1431 | return -EIO; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1432 | |
| 1433 | *result = ctl; |
| 1434 | return 0; |
| 1435 | } |
| 1436 | |
Avi Kivity | 110312c | 2010-12-21 12:54:20 +0200 | [diff] [blame^] | 1437 | static __init bool allow_1_setting(u32 msr, u32 ctl) |
| 1438 | { |
| 1439 | u32 vmx_msr_low, vmx_msr_high; |
| 1440 | |
| 1441 | rdmsr(msr, vmx_msr_low, vmx_msr_high); |
| 1442 | return vmx_msr_high & ctl; |
| 1443 | } |
| 1444 | |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1445 | static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf) |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1446 | { |
| 1447 | u32 vmx_msr_low, vmx_msr_high; |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 1448 | u32 min, opt, min2, opt2; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1449 | u32 _pin_based_exec_control = 0; |
| 1450 | u32 _cpu_based_exec_control = 0; |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 1451 | u32 _cpu_based_2nd_exec_control = 0; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1452 | u32 _vmexit_control = 0; |
| 1453 | u32 _vmentry_control = 0; |
| 1454 | |
| 1455 | min = PIN_BASED_EXT_INTR_MASK | PIN_BASED_NMI_EXITING; |
Sheng Yang | f08864b | 2008-05-15 18:23:25 +0800 | [diff] [blame] | 1456 | opt = PIN_BASED_VIRTUAL_NMIS; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1457 | if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PINBASED_CTLS, |
| 1458 | &_pin_based_exec_control) < 0) |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1459 | return -EIO; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1460 | |
Anthony Liguori | 443381a | 2010-12-06 10:53:38 -0600 | [diff] [blame] | 1461 | min = |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1462 | #ifdef CONFIG_X86_64 |
| 1463 | CPU_BASED_CR8_LOAD_EXITING | |
| 1464 | CPU_BASED_CR8_STORE_EXITING | |
| 1465 | #endif |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 1466 | CPU_BASED_CR3_LOAD_EXITING | |
| 1467 | CPU_BASED_CR3_STORE_EXITING | |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1468 | CPU_BASED_USE_IO_BITMAPS | |
| 1469 | CPU_BASED_MOV_DR_EXITING | |
Marcelo Tosatti | a705289 | 2008-09-23 13:18:35 -0300 | [diff] [blame] | 1470 | CPU_BASED_USE_TSC_OFFSETING | |
Sheng Yang | 5970867 | 2009-12-15 13:29:54 +0800 | [diff] [blame] | 1471 | CPU_BASED_MWAIT_EXITING | |
| 1472 | CPU_BASED_MONITOR_EXITING | |
Marcelo Tosatti | a705289 | 2008-09-23 13:18:35 -0300 | [diff] [blame] | 1473 | CPU_BASED_INVLPG_EXITING; |
Anthony Liguori | 443381a | 2010-12-06 10:53:38 -0600 | [diff] [blame] | 1474 | |
| 1475 | if (yield_on_hlt) |
| 1476 | min |= CPU_BASED_HLT_EXITING; |
| 1477 | |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 1478 | opt = CPU_BASED_TPR_SHADOW | |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 1479 | CPU_BASED_USE_MSR_BITMAPS | |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 1480 | CPU_BASED_ACTIVATE_SECONDARY_CONTROLS; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1481 | if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PROCBASED_CTLS, |
| 1482 | &_cpu_based_exec_control) < 0) |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1483 | return -EIO; |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 1484 | #ifdef CONFIG_X86_64 |
| 1485 | if ((_cpu_based_exec_control & CPU_BASED_TPR_SHADOW)) |
| 1486 | _cpu_based_exec_control &= ~CPU_BASED_CR8_LOAD_EXITING & |
| 1487 | ~CPU_BASED_CR8_STORE_EXITING; |
| 1488 | #endif |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 1489 | if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) { |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 1490 | min2 = 0; |
| 1491 | opt2 = SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES | |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 1492 | SECONDARY_EXEC_WBINVD_EXITING | |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 1493 | SECONDARY_EXEC_ENABLE_VPID | |
Nitin A Kamble | 3a624e2 | 2009-06-08 11:34:16 -0700 | [diff] [blame] | 1494 | SECONDARY_EXEC_ENABLE_EPT | |
Zhai, Edwin | 4b8d54f | 2009-10-09 18:03:20 +0800 | [diff] [blame] | 1495 | SECONDARY_EXEC_UNRESTRICTED_GUEST | |
Sheng Yang | 4e47c7a | 2009-12-18 16:48:47 +0800 | [diff] [blame] | 1496 | SECONDARY_EXEC_PAUSE_LOOP_EXITING | |
| 1497 | SECONDARY_EXEC_RDTSCP; |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 1498 | if (adjust_vmx_controls(min2, opt2, |
| 1499 | MSR_IA32_VMX_PROCBASED_CTLS2, |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 1500 | &_cpu_based_2nd_exec_control) < 0) |
| 1501 | return -EIO; |
| 1502 | } |
| 1503 | #ifndef CONFIG_X86_64 |
| 1504 | if (!(_cpu_based_2nd_exec_control & |
| 1505 | SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)) |
| 1506 | _cpu_based_exec_control &= ~CPU_BASED_TPR_SHADOW; |
| 1507 | #endif |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 1508 | if (_cpu_based_2nd_exec_control & SECONDARY_EXEC_ENABLE_EPT) { |
Marcelo Tosatti | a705289 | 2008-09-23 13:18:35 -0300 | [diff] [blame] | 1509 | /* CR3 accesses and invlpg don't need to cause VM Exits when EPT |
| 1510 | enabled */ |
Gleb Natapov | 5fff7d2 | 2009-08-27 18:41:30 +0300 | [diff] [blame] | 1511 | _cpu_based_exec_control &= ~(CPU_BASED_CR3_LOAD_EXITING | |
| 1512 | CPU_BASED_CR3_STORE_EXITING | |
| 1513 | CPU_BASED_INVLPG_EXITING); |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 1514 | rdmsr(MSR_IA32_VMX_EPT_VPID_CAP, |
| 1515 | vmx_capability.ept, vmx_capability.vpid); |
| 1516 | } |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1517 | |
| 1518 | min = 0; |
| 1519 | #ifdef CONFIG_X86_64 |
| 1520 | min |= VM_EXIT_HOST_ADDR_SPACE_SIZE; |
| 1521 | #endif |
Sheng Yang | 468d472 | 2008-10-09 16:01:55 +0800 | [diff] [blame] | 1522 | opt = VM_EXIT_SAVE_IA32_PAT | VM_EXIT_LOAD_IA32_PAT; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1523 | if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_EXIT_CTLS, |
| 1524 | &_vmexit_control) < 0) |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1525 | return -EIO; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1526 | |
Sheng Yang | 468d472 | 2008-10-09 16:01:55 +0800 | [diff] [blame] | 1527 | min = 0; |
| 1528 | opt = VM_ENTRY_LOAD_IA32_PAT; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1529 | if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_ENTRY_CTLS, |
| 1530 | &_vmentry_control) < 0) |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1531 | return -EIO; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1532 | |
Nguyen Anh Quynh | c68876f | 2006-12-29 16:49:54 -0800 | [diff] [blame] | 1533 | rdmsr(MSR_IA32_VMX_BASIC, vmx_msr_low, vmx_msr_high); |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1534 | |
| 1535 | /* IA-32 SDM Vol 3B: VMCS size is never greater than 4kB. */ |
| 1536 | if ((vmx_msr_high & 0x1fff) > PAGE_SIZE) |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1537 | return -EIO; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1538 | |
| 1539 | #ifdef CONFIG_X86_64 |
| 1540 | /* IA-32 SDM Vol 3B: 64-bit CPUs always have VMX_BASIC_MSR[48]==0. */ |
| 1541 | if (vmx_msr_high & (1u<<16)) |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1542 | return -EIO; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1543 | #endif |
| 1544 | |
| 1545 | /* Require Write-Back (WB) memory type for VMCS accesses. */ |
| 1546 | if (((vmx_msr_high >> 18) & 15) != 6) |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1547 | return -EIO; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1548 | |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1549 | vmcs_conf->size = vmx_msr_high & 0x1fff; |
| 1550 | vmcs_conf->order = get_order(vmcs_config.size); |
| 1551 | vmcs_conf->revision_id = vmx_msr_low; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1552 | |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1553 | vmcs_conf->pin_based_exec_ctrl = _pin_based_exec_control; |
| 1554 | vmcs_conf->cpu_based_exec_ctrl = _cpu_based_exec_control; |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 1555 | vmcs_conf->cpu_based_2nd_exec_ctrl = _cpu_based_2nd_exec_control; |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1556 | vmcs_conf->vmexit_ctrl = _vmexit_control; |
| 1557 | vmcs_conf->vmentry_ctrl = _vmentry_control; |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1558 | |
Avi Kivity | 110312c | 2010-12-21 12:54:20 +0200 | [diff] [blame^] | 1559 | cpu_has_load_ia32_efer = |
| 1560 | allow_1_setting(MSR_IA32_VMX_ENTRY_CTLS, |
| 1561 | VM_ENTRY_LOAD_IA32_EFER) |
| 1562 | && allow_1_setting(MSR_IA32_VMX_EXIT_CTLS, |
| 1563 | VM_EXIT_LOAD_IA32_EFER); |
| 1564 | |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1565 | return 0; |
Nguyen Anh Quynh | c68876f | 2006-12-29 16:49:54 -0800 | [diff] [blame] | 1566 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1567 | |
| 1568 | static struct vmcs *alloc_vmcs_cpu(int cpu) |
| 1569 | { |
| 1570 | int node = cpu_to_node(cpu); |
| 1571 | struct page *pages; |
| 1572 | struct vmcs *vmcs; |
| 1573 | |
Mel Gorman | 6484eb3 | 2009-06-16 15:31:54 -0700 | [diff] [blame] | 1574 | pages = alloc_pages_exact_node(node, GFP_KERNEL, vmcs_config.order); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1575 | if (!pages) |
| 1576 | return NULL; |
| 1577 | vmcs = page_address(pages); |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1578 | memset(vmcs, 0, vmcs_config.size); |
| 1579 | vmcs->revision_id = vmcs_config.revision_id; /* vmcs revision id */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1580 | return vmcs; |
| 1581 | } |
| 1582 | |
| 1583 | static struct vmcs *alloc_vmcs(void) |
| 1584 | { |
Ingo Molnar | d3b2c33 | 2007-01-05 16:36:23 -0800 | [diff] [blame] | 1585 | return alloc_vmcs_cpu(raw_smp_processor_id()); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1586 | } |
| 1587 | |
| 1588 | static void free_vmcs(struct vmcs *vmcs) |
| 1589 | { |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 1590 | free_pages((unsigned long)vmcs, vmcs_config.order); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1591 | } |
| 1592 | |
Sam Ravnborg | 3995958 | 2007-06-01 00:47:13 -0700 | [diff] [blame] | 1593 | static void free_kvm_area(void) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1594 | { |
| 1595 | int cpu; |
| 1596 | |
Zachary Amsden | 3230bb4 | 2009-09-29 11:38:37 -1000 | [diff] [blame] | 1597 | for_each_possible_cpu(cpu) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1598 | free_vmcs(per_cpu(vmxarea, cpu)); |
Zachary Amsden | 3230bb4 | 2009-09-29 11:38:37 -1000 | [diff] [blame] | 1599 | per_cpu(vmxarea, cpu) = NULL; |
| 1600 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1601 | } |
| 1602 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1603 | static __init int alloc_kvm_area(void) |
| 1604 | { |
| 1605 | int cpu; |
| 1606 | |
Zachary Amsden | 3230bb4 | 2009-09-29 11:38:37 -1000 | [diff] [blame] | 1607 | for_each_possible_cpu(cpu) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1608 | struct vmcs *vmcs; |
| 1609 | |
| 1610 | vmcs = alloc_vmcs_cpu(cpu); |
| 1611 | if (!vmcs) { |
| 1612 | free_kvm_area(); |
| 1613 | return -ENOMEM; |
| 1614 | } |
| 1615 | |
| 1616 | per_cpu(vmxarea, cpu) = vmcs; |
| 1617 | } |
| 1618 | return 0; |
| 1619 | } |
| 1620 | |
| 1621 | static __init int hardware_setup(void) |
| 1622 | { |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1623 | if (setup_vmcs_config(&vmcs_config) < 0) |
| 1624 | return -EIO; |
Joerg Roedel | 50a37eb | 2008-01-31 14:57:38 +0100 | [diff] [blame] | 1625 | |
| 1626 | if (boot_cpu_has(X86_FEATURE_NX)) |
| 1627 | kvm_enable_efer_bits(EFER_NX); |
| 1628 | |
Sheng Yang | 93ba03c | 2009-04-01 15:52:32 +0800 | [diff] [blame] | 1629 | if (!cpu_has_vmx_vpid()) |
| 1630 | enable_vpid = 0; |
| 1631 | |
Sheng Yang | 4bc9b98 | 2010-06-02 14:05:24 +0800 | [diff] [blame] | 1632 | if (!cpu_has_vmx_ept() || |
| 1633 | !cpu_has_vmx_ept_4levels()) { |
Sheng Yang | 93ba03c | 2009-04-01 15:52:32 +0800 | [diff] [blame] | 1634 | enable_ept = 0; |
Nitin A Kamble | 3a624e2 | 2009-06-08 11:34:16 -0700 | [diff] [blame] | 1635 | enable_unrestricted_guest = 0; |
| 1636 | } |
| 1637 | |
| 1638 | if (!cpu_has_vmx_unrestricted_guest()) |
| 1639 | enable_unrestricted_guest = 0; |
Sheng Yang | 93ba03c | 2009-04-01 15:52:32 +0800 | [diff] [blame] | 1640 | |
| 1641 | if (!cpu_has_vmx_flexpriority()) |
| 1642 | flexpriority_enabled = 0; |
| 1643 | |
Gleb Natapov | 95ba827313 | 2009-04-21 17:45:08 +0300 | [diff] [blame] | 1644 | if (!cpu_has_vmx_tpr_shadow()) |
| 1645 | kvm_x86_ops->update_cr8_intercept = NULL; |
| 1646 | |
Marcelo Tosatti | 54dee99 | 2009-06-11 12:07:44 -0300 | [diff] [blame] | 1647 | if (enable_ept && !cpu_has_vmx_ept_2m_page()) |
| 1648 | kvm_disable_largepages(); |
| 1649 | |
Zhai, Edwin | 4b8d54f | 2009-10-09 18:03:20 +0800 | [diff] [blame] | 1650 | if (!cpu_has_vmx_ple()) |
| 1651 | ple_gap = 0; |
| 1652 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1653 | return alloc_kvm_area(); |
| 1654 | } |
| 1655 | |
| 1656 | static __exit void hardware_unsetup(void) |
| 1657 | { |
| 1658 | free_kvm_area(); |
| 1659 | } |
| 1660 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1661 | static void fix_pmode_dataseg(int seg, struct kvm_save_segment *save) |
| 1662 | { |
| 1663 | struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg]; |
| 1664 | |
Avi Kivity | 6af11b9 | 2007-03-19 13:18:10 +0200 | [diff] [blame] | 1665 | if (vmcs_readl(sf->base) == save->base && (save->base & AR_S_MASK)) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1666 | vmcs_write16(sf->selector, save->selector); |
| 1667 | vmcs_writel(sf->base, save->base); |
| 1668 | vmcs_write32(sf->limit, save->limit); |
| 1669 | vmcs_write32(sf->ar_bytes, save->ar); |
| 1670 | } else { |
| 1671 | u32 dpl = (vmcs_read16(sf->selector) & SELECTOR_RPL_MASK) |
| 1672 | << AR_DPL_SHIFT; |
| 1673 | vmcs_write32(sf->ar_bytes, 0x93 | dpl); |
| 1674 | } |
| 1675 | } |
| 1676 | |
| 1677 | static void enter_pmode(struct kvm_vcpu *vcpu) |
| 1678 | { |
| 1679 | unsigned long flags; |
Mohammed Gamal | a89a8fb | 2008-08-17 16:42:16 +0300 | [diff] [blame] | 1680 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1681 | |
Mohammed Gamal | a89a8fb | 2008-08-17 16:42:16 +0300 | [diff] [blame] | 1682 | vmx->emulation_required = 1; |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1683 | vmx->rmode.vm86_active = 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1684 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1685 | vmcs_writel(GUEST_TR_BASE, vmx->rmode.tr.base); |
| 1686 | vmcs_write32(GUEST_TR_LIMIT, vmx->rmode.tr.limit); |
| 1687 | vmcs_write32(GUEST_TR_AR_BYTES, vmx->rmode.tr.ar); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1688 | |
| 1689 | flags = vmcs_readl(GUEST_RFLAGS); |
Avi Kivity | 78ac8b4 | 2010-04-08 18:19:35 +0300 | [diff] [blame] | 1690 | flags &= RMODE_GUEST_OWNED_EFLAGS_BITS; |
| 1691 | flags |= vmx->rmode.save_rflags & ~RMODE_GUEST_OWNED_EFLAGS_BITS; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1692 | vmcs_writel(GUEST_RFLAGS, flags); |
| 1693 | |
Rusty Russell | 66aee91 | 2007-07-17 23:34:16 +1000 | [diff] [blame] | 1694 | vmcs_writel(GUEST_CR4, (vmcs_readl(GUEST_CR4) & ~X86_CR4_VME) | |
| 1695 | (vmcs_readl(CR4_READ_SHADOW) & X86_CR4_VME)); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1696 | |
| 1697 | update_exception_bitmap(vcpu); |
| 1698 | |
Mohammed Gamal | a89a8fb | 2008-08-17 16:42:16 +0300 | [diff] [blame] | 1699 | if (emulate_invalid_guest_state) |
| 1700 | return; |
| 1701 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1702 | fix_pmode_dataseg(VCPU_SREG_ES, &vmx->rmode.es); |
| 1703 | fix_pmode_dataseg(VCPU_SREG_DS, &vmx->rmode.ds); |
| 1704 | fix_pmode_dataseg(VCPU_SREG_GS, &vmx->rmode.gs); |
| 1705 | fix_pmode_dataseg(VCPU_SREG_FS, &vmx->rmode.fs); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1706 | |
| 1707 | vmcs_write16(GUEST_SS_SELECTOR, 0); |
| 1708 | vmcs_write32(GUEST_SS_AR_BYTES, 0x93); |
| 1709 | |
| 1710 | vmcs_write16(GUEST_CS_SELECTOR, |
| 1711 | vmcs_read16(GUEST_CS_SELECTOR) & ~SELECTOR_RPL_MASK); |
| 1712 | vmcs_write32(GUEST_CS_AR_BYTES, 0x9b); |
| 1713 | } |
| 1714 | |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 1715 | static gva_t rmode_tss_base(struct kvm *kvm) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1716 | { |
Zhang Xiantao | bfc6d22 | 2007-12-14 10:20:16 +0800 | [diff] [blame] | 1717 | if (!kvm->arch.tss_addr) { |
Marcelo Tosatti | bc6678a | 2009-12-23 14:35:21 -0200 | [diff] [blame] | 1718 | struct kvm_memslots *slots; |
| 1719 | gfn_t base_gfn; |
| 1720 | |
Lai Jiangshan | 90d83dc | 2010-04-19 17:41:23 +0800 | [diff] [blame] | 1721 | slots = kvm_memslots(kvm); |
Avi Kivity | f495c6e | 2010-06-10 17:21:29 +0300 | [diff] [blame] | 1722 | base_gfn = slots->memslots[0].base_gfn + |
Marcelo Tosatti | 46a26bf | 2009-12-23 14:35:16 -0200 | [diff] [blame] | 1723 | kvm->memslots->memslots[0].npages - 3; |
Izik Eidus | cbc9402 | 2007-10-25 00:29:55 +0200 | [diff] [blame] | 1724 | return base_gfn << PAGE_SHIFT; |
| 1725 | } |
Zhang Xiantao | bfc6d22 | 2007-12-14 10:20:16 +0800 | [diff] [blame] | 1726 | return kvm->arch.tss_addr; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1727 | } |
| 1728 | |
| 1729 | static void fix_rmode_seg(int seg, struct kvm_save_segment *save) |
| 1730 | { |
| 1731 | struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg]; |
| 1732 | |
| 1733 | save->selector = vmcs_read16(sf->selector); |
| 1734 | save->base = vmcs_readl(sf->base); |
| 1735 | save->limit = vmcs_read32(sf->limit); |
| 1736 | save->ar = vmcs_read32(sf->ar_bytes); |
Jan Kiszka | 15b00f3 | 2007-11-19 10:21:45 +0100 | [diff] [blame] | 1737 | vmcs_write16(sf->selector, save->base >> 4); |
| 1738 | vmcs_write32(sf->base, save->base & 0xfffff); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1739 | vmcs_write32(sf->limit, 0xffff); |
| 1740 | vmcs_write32(sf->ar_bytes, 0xf3); |
| 1741 | } |
| 1742 | |
| 1743 | static void enter_rmode(struct kvm_vcpu *vcpu) |
| 1744 | { |
| 1745 | unsigned long flags; |
Mohammed Gamal | a89a8fb | 2008-08-17 16:42:16 +0300 | [diff] [blame] | 1746 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1747 | |
Nitin A Kamble | 3a624e2 | 2009-06-08 11:34:16 -0700 | [diff] [blame] | 1748 | if (enable_unrestricted_guest) |
| 1749 | return; |
| 1750 | |
Mohammed Gamal | a89a8fb | 2008-08-17 16:42:16 +0300 | [diff] [blame] | 1751 | vmx->emulation_required = 1; |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1752 | vmx->rmode.vm86_active = 1; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1753 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1754 | vmx->rmode.tr.base = vmcs_readl(GUEST_TR_BASE); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1755 | vmcs_writel(GUEST_TR_BASE, rmode_tss_base(vcpu->kvm)); |
| 1756 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1757 | vmx->rmode.tr.limit = vmcs_read32(GUEST_TR_LIMIT); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1758 | vmcs_write32(GUEST_TR_LIMIT, RMODE_TSS_SIZE - 1); |
| 1759 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1760 | vmx->rmode.tr.ar = vmcs_read32(GUEST_TR_AR_BYTES); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1761 | vmcs_write32(GUEST_TR_AR_BYTES, 0x008b); |
| 1762 | |
| 1763 | flags = vmcs_readl(GUEST_RFLAGS); |
Avi Kivity | 78ac8b4 | 2010-04-08 18:19:35 +0300 | [diff] [blame] | 1764 | vmx->rmode.save_rflags = flags; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1765 | |
Glauber de Oliveira Costa | 053de04 | 2008-01-30 13:31:27 +0100 | [diff] [blame] | 1766 | flags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1767 | |
| 1768 | vmcs_writel(GUEST_RFLAGS, flags); |
Rusty Russell | 66aee91 | 2007-07-17 23:34:16 +1000 | [diff] [blame] | 1769 | vmcs_writel(GUEST_CR4, vmcs_readl(GUEST_CR4) | X86_CR4_VME); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1770 | update_exception_bitmap(vcpu); |
| 1771 | |
Mohammed Gamal | a89a8fb | 2008-08-17 16:42:16 +0300 | [diff] [blame] | 1772 | if (emulate_invalid_guest_state) |
| 1773 | goto continue_rmode; |
| 1774 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1775 | vmcs_write16(GUEST_SS_SELECTOR, vmcs_readl(GUEST_SS_BASE) >> 4); |
| 1776 | vmcs_write32(GUEST_SS_LIMIT, 0xffff); |
| 1777 | vmcs_write32(GUEST_SS_AR_BYTES, 0xf3); |
| 1778 | |
| 1779 | vmcs_write32(GUEST_CS_AR_BYTES, 0xf3); |
Michael Riepe | abacf8d | 2006-12-22 01:05:45 -0800 | [diff] [blame] | 1780 | vmcs_write32(GUEST_CS_LIMIT, 0xffff); |
Avi Kivity | 8cb5b03 | 2007-03-20 18:40:40 +0200 | [diff] [blame] | 1781 | if (vmcs_readl(GUEST_CS_BASE) == 0xffff0000) |
| 1782 | vmcs_writel(GUEST_CS_BASE, 0xf0000); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1783 | vmcs_write16(GUEST_CS_SELECTOR, vmcs_readl(GUEST_CS_BASE) >> 4); |
| 1784 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1785 | fix_rmode_seg(VCPU_SREG_ES, &vmx->rmode.es); |
| 1786 | fix_rmode_seg(VCPU_SREG_DS, &vmx->rmode.ds); |
| 1787 | fix_rmode_seg(VCPU_SREG_GS, &vmx->rmode.gs); |
| 1788 | fix_rmode_seg(VCPU_SREG_FS, &vmx->rmode.fs); |
Avi Kivity | 75880a0 | 2007-06-20 11:20:04 +0300 | [diff] [blame] | 1789 | |
Mohammed Gamal | a89a8fb | 2008-08-17 16:42:16 +0300 | [diff] [blame] | 1790 | continue_rmode: |
Eddie Dong | 8668a3c | 2007-10-10 14:26:45 +0800 | [diff] [blame] | 1791 | kvm_mmu_reset_context(vcpu); |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 1792 | init_rmode(vcpu->kvm); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1793 | } |
| 1794 | |
Amit Shah | 401d10d | 2009-02-20 22:53:37 +0530 | [diff] [blame] | 1795 | static void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer) |
| 1796 | { |
| 1797 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 1798 | struct shared_msr_entry *msr = find_msr_entry(vmx, MSR_EFER); |
| 1799 | |
| 1800 | if (!msr) |
| 1801 | return; |
Amit Shah | 401d10d | 2009-02-20 22:53:37 +0530 | [diff] [blame] | 1802 | |
Avi Kivity | 44ea2b1 | 2009-09-06 15:55:37 +0300 | [diff] [blame] | 1803 | /* |
| 1804 | * Force kernel_gs_base reloading before EFER changes, as control |
| 1805 | * of this msr depends on is_long_mode(). |
| 1806 | */ |
| 1807 | vmx_load_host_state(to_vmx(vcpu)); |
Avi Kivity | f6801df | 2010-01-21 15:31:50 +0200 | [diff] [blame] | 1808 | vcpu->arch.efer = efer; |
Amit Shah | 401d10d | 2009-02-20 22:53:37 +0530 | [diff] [blame] | 1809 | if (efer & EFER_LMA) { |
| 1810 | vmcs_write32(VM_ENTRY_CONTROLS, |
| 1811 | vmcs_read32(VM_ENTRY_CONTROLS) | |
| 1812 | VM_ENTRY_IA32E_MODE); |
| 1813 | msr->data = efer; |
| 1814 | } else { |
| 1815 | vmcs_write32(VM_ENTRY_CONTROLS, |
| 1816 | vmcs_read32(VM_ENTRY_CONTROLS) & |
| 1817 | ~VM_ENTRY_IA32E_MODE); |
| 1818 | |
| 1819 | msr->data = efer & ~EFER_LME; |
| 1820 | } |
| 1821 | setup_msrs(vmx); |
| 1822 | } |
| 1823 | |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 1824 | #ifdef CONFIG_X86_64 |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1825 | |
| 1826 | static void enter_lmode(struct kvm_vcpu *vcpu) |
| 1827 | { |
| 1828 | u32 guest_tr_ar; |
| 1829 | |
| 1830 | guest_tr_ar = vmcs_read32(GUEST_TR_AR_BYTES); |
| 1831 | if ((guest_tr_ar & AR_TYPE_MASK) != AR_TYPE_BUSY_64_TSS) { |
| 1832 | printk(KERN_DEBUG "%s: tss fixup for long mode. \n", |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame] | 1833 | __func__); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1834 | vmcs_write32(GUEST_TR_AR_BYTES, |
| 1835 | (guest_tr_ar & ~AR_TYPE_MASK) |
| 1836 | | AR_TYPE_BUSY_64_TSS); |
| 1837 | } |
Avi Kivity | da38f43 | 2010-07-06 11:30:49 +0300 | [diff] [blame] | 1838 | vmx_set_efer(vcpu, vcpu->arch.efer | EFER_LMA); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1839 | } |
| 1840 | |
| 1841 | static void exit_lmode(struct kvm_vcpu *vcpu) |
| 1842 | { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1843 | vmcs_write32(VM_ENTRY_CONTROLS, |
| 1844 | vmcs_read32(VM_ENTRY_CONTROLS) |
Li, Xin B | 1e4e6e0 | 2007-08-01 21:49:10 +0300 | [diff] [blame] | 1845 | & ~VM_ENTRY_IA32E_MODE); |
Avi Kivity | da38f43 | 2010-07-06 11:30:49 +0300 | [diff] [blame] | 1846 | vmx_set_efer(vcpu, vcpu->arch.efer & ~EFER_LMA); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1847 | } |
| 1848 | |
| 1849 | #endif |
| 1850 | |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 1851 | static void vmx_flush_tlb(struct kvm_vcpu *vcpu) |
| 1852 | { |
Gui Jianfeng | b9d762f | 2010-06-07 10:32:29 +0800 | [diff] [blame] | 1853 | vpid_sync_context(to_vmx(vcpu)); |
Xiao Guangrong | dd180b3 | 2010-07-03 16:02:42 +0800 | [diff] [blame] | 1854 | if (enable_ept) { |
| 1855 | if (!VALID_PAGE(vcpu->arch.mmu.root_hpa)) |
| 1856 | return; |
Sheng Yang | 4e1096d | 2008-07-06 19:16:51 +0800 | [diff] [blame] | 1857 | ept_sync_context(construct_eptp(vcpu->arch.mmu.root_hpa)); |
Xiao Guangrong | dd180b3 | 2010-07-03 16:02:42 +0800 | [diff] [blame] | 1858 | } |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 1859 | } |
| 1860 | |
Avi Kivity | e8467fd | 2009-12-29 18:43:06 +0200 | [diff] [blame] | 1861 | static void vmx_decache_cr0_guest_bits(struct kvm_vcpu *vcpu) |
| 1862 | { |
| 1863 | ulong cr0_guest_owned_bits = vcpu->arch.cr0_guest_owned_bits; |
| 1864 | |
| 1865 | vcpu->arch.cr0 &= ~cr0_guest_owned_bits; |
| 1866 | vcpu->arch.cr0 |= vmcs_readl(GUEST_CR0) & cr0_guest_owned_bits; |
| 1867 | } |
| 1868 | |
Anthony Liguori | 25c4c27 | 2007-04-27 09:29:21 +0300 | [diff] [blame] | 1869 | static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu) |
Avi Kivity | 399badf | 2007-01-05 16:36:38 -0800 | [diff] [blame] | 1870 | { |
Avi Kivity | fc78f51 | 2009-12-07 12:16:48 +0200 | [diff] [blame] | 1871 | ulong cr4_guest_owned_bits = vcpu->arch.cr4_guest_owned_bits; |
| 1872 | |
| 1873 | vcpu->arch.cr4 &= ~cr4_guest_owned_bits; |
| 1874 | vcpu->arch.cr4 |= vmcs_readl(GUEST_CR4) & cr4_guest_owned_bits; |
Avi Kivity | 399badf | 2007-01-05 16:36:38 -0800 | [diff] [blame] | 1875 | } |
| 1876 | |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1877 | static void ept_load_pdptrs(struct kvm_vcpu *vcpu) |
| 1878 | { |
Avi Kivity | 6de4f3a | 2009-05-31 22:58:47 +0300 | [diff] [blame] | 1879 | if (!test_bit(VCPU_EXREG_PDPTR, |
| 1880 | (unsigned long *)&vcpu->arch.regs_dirty)) |
| 1881 | return; |
| 1882 | |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1883 | if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) { |
Joerg Roedel | ff03a07 | 2010-09-10 17:30:57 +0200 | [diff] [blame] | 1884 | vmcs_write64(GUEST_PDPTR0, vcpu->arch.mmu.pdptrs[0]); |
| 1885 | vmcs_write64(GUEST_PDPTR1, vcpu->arch.mmu.pdptrs[1]); |
| 1886 | vmcs_write64(GUEST_PDPTR2, vcpu->arch.mmu.pdptrs[2]); |
| 1887 | vmcs_write64(GUEST_PDPTR3, vcpu->arch.mmu.pdptrs[3]); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1888 | } |
| 1889 | } |
| 1890 | |
Avi Kivity | 8f5d549 | 2009-05-31 18:41:29 +0300 | [diff] [blame] | 1891 | static void ept_save_pdptrs(struct kvm_vcpu *vcpu) |
| 1892 | { |
| 1893 | if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) { |
Joerg Roedel | ff03a07 | 2010-09-10 17:30:57 +0200 | [diff] [blame] | 1894 | vcpu->arch.mmu.pdptrs[0] = vmcs_read64(GUEST_PDPTR0); |
| 1895 | vcpu->arch.mmu.pdptrs[1] = vmcs_read64(GUEST_PDPTR1); |
| 1896 | vcpu->arch.mmu.pdptrs[2] = vmcs_read64(GUEST_PDPTR2); |
| 1897 | vcpu->arch.mmu.pdptrs[3] = vmcs_read64(GUEST_PDPTR3); |
Avi Kivity | 8f5d549 | 2009-05-31 18:41:29 +0300 | [diff] [blame] | 1898 | } |
Avi Kivity | 6de4f3a | 2009-05-31 22:58:47 +0300 | [diff] [blame] | 1899 | |
| 1900 | __set_bit(VCPU_EXREG_PDPTR, |
| 1901 | (unsigned long *)&vcpu->arch.regs_avail); |
| 1902 | __set_bit(VCPU_EXREG_PDPTR, |
| 1903 | (unsigned long *)&vcpu->arch.regs_dirty); |
Avi Kivity | 8f5d549 | 2009-05-31 18:41:29 +0300 | [diff] [blame] | 1904 | } |
| 1905 | |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1906 | static void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); |
| 1907 | |
| 1908 | static void ept_update_paging_mode_cr0(unsigned long *hw_cr0, |
| 1909 | unsigned long cr0, |
| 1910 | struct kvm_vcpu *vcpu) |
| 1911 | { |
| 1912 | if (!(cr0 & X86_CR0_PG)) { |
| 1913 | /* From paging/starting to nonpaging */ |
| 1914 | vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, |
Sheng Yang | 65267ea | 2008-06-18 14:43:38 +0800 | [diff] [blame] | 1915 | vmcs_read32(CPU_BASED_VM_EXEC_CONTROL) | |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1916 | (CPU_BASED_CR3_LOAD_EXITING | |
| 1917 | CPU_BASED_CR3_STORE_EXITING)); |
| 1918 | vcpu->arch.cr0 = cr0; |
Avi Kivity | fc78f51 | 2009-12-07 12:16:48 +0200 | [diff] [blame] | 1919 | vmx_set_cr4(vcpu, kvm_read_cr4(vcpu)); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1920 | } else if (!is_paging(vcpu)) { |
| 1921 | /* From nonpaging to paging */ |
| 1922 | vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, |
Sheng Yang | 65267ea | 2008-06-18 14:43:38 +0800 | [diff] [blame] | 1923 | vmcs_read32(CPU_BASED_VM_EXEC_CONTROL) & |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1924 | ~(CPU_BASED_CR3_LOAD_EXITING | |
| 1925 | CPU_BASED_CR3_STORE_EXITING)); |
| 1926 | vcpu->arch.cr0 = cr0; |
Avi Kivity | fc78f51 | 2009-12-07 12:16:48 +0200 | [diff] [blame] | 1927 | vmx_set_cr4(vcpu, kvm_read_cr4(vcpu)); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1928 | } |
Sheng Yang | 95eb84a | 2009-08-19 09:52:18 +0800 | [diff] [blame] | 1929 | |
| 1930 | if (!(cr0 & X86_CR0_WP)) |
| 1931 | *hw_cr0 &= ~X86_CR0_WP; |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1932 | } |
| 1933 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1934 | static void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0) |
| 1935 | { |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1936 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Nitin A Kamble | 3a624e2 | 2009-06-08 11:34:16 -0700 | [diff] [blame] | 1937 | unsigned long hw_cr0; |
| 1938 | |
| 1939 | if (enable_unrestricted_guest) |
| 1940 | hw_cr0 = (cr0 & ~KVM_GUEST_CR0_MASK_UNRESTRICTED_GUEST) |
| 1941 | | KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST; |
| 1942 | else |
| 1943 | hw_cr0 = (cr0 & ~KVM_GUEST_CR0_MASK) | KVM_VM_CR0_ALWAYS_ON; |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1944 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1945 | if (vmx->rmode.vm86_active && (cr0 & X86_CR0_PE)) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1946 | enter_pmode(vcpu); |
| 1947 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 1948 | if (!vmx->rmode.vm86_active && !(cr0 & X86_CR0_PE)) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1949 | enter_rmode(vcpu); |
| 1950 | |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 1951 | #ifdef CONFIG_X86_64 |
Avi Kivity | f6801df | 2010-01-21 15:31:50 +0200 | [diff] [blame] | 1952 | if (vcpu->arch.efer & EFER_LME) { |
Rusty Russell | 707d92f | 2007-07-17 23:19:08 +1000 | [diff] [blame] | 1953 | if (!is_paging(vcpu) && (cr0 & X86_CR0_PG)) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1954 | enter_lmode(vcpu); |
Rusty Russell | 707d92f | 2007-07-17 23:19:08 +1000 | [diff] [blame] | 1955 | if (is_paging(vcpu) && !(cr0 & X86_CR0_PG)) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1956 | exit_lmode(vcpu); |
| 1957 | } |
| 1958 | #endif |
| 1959 | |
Avi Kivity | 089d034 | 2009-03-23 18:26:32 +0200 | [diff] [blame] | 1960 | if (enable_ept) |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1961 | ept_update_paging_mode_cr0(&hw_cr0, cr0, vcpu); |
| 1962 | |
Avi Kivity | 02daab2 | 2009-12-30 12:40:26 +0200 | [diff] [blame] | 1963 | if (!vcpu->fpu_active) |
Avi Kivity | 81231c6 | 2010-01-24 16:26:40 +0200 | [diff] [blame] | 1964 | hw_cr0 |= X86_CR0_TS | X86_CR0_MP; |
Avi Kivity | 02daab2 | 2009-12-30 12:40:26 +0200 | [diff] [blame] | 1965 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1966 | vmcs_writel(CR0_READ_SHADOW, cr0); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1967 | vmcs_writel(GUEST_CR0, hw_cr0); |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1968 | vcpu->arch.cr0 = cr0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1969 | } |
| 1970 | |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1971 | static u64 construct_eptp(unsigned long root_hpa) |
| 1972 | { |
| 1973 | u64 eptp; |
| 1974 | |
| 1975 | /* TODO write the value reading from MSR */ |
| 1976 | eptp = VMX_EPT_DEFAULT_MT | |
| 1977 | VMX_EPT_DEFAULT_GAW << VMX_EPT_GAW_EPTP_SHIFT; |
| 1978 | eptp |= (root_hpa & PAGE_MASK); |
| 1979 | |
| 1980 | return eptp; |
| 1981 | } |
| 1982 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1983 | static void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3) |
| 1984 | { |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1985 | unsigned long guest_cr3; |
| 1986 | u64 eptp; |
| 1987 | |
| 1988 | guest_cr3 = cr3; |
Avi Kivity | 089d034 | 2009-03-23 18:26:32 +0200 | [diff] [blame] | 1989 | if (enable_ept) { |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1990 | eptp = construct_eptp(cr3); |
| 1991 | vmcs_write64(EPT_POINTER, eptp); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1992 | guest_cr3 = is_paging(vcpu) ? vcpu->arch.cr3 : |
Sheng Yang | b927a3c | 2009-07-21 10:42:48 +0800 | [diff] [blame] | 1993 | vcpu->kvm->arch.ept_identity_map_addr; |
Marcelo Tosatti | 7c93be4 | 2009-10-26 16:48:33 -0200 | [diff] [blame] | 1994 | ept_load_pdptrs(vcpu); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1995 | } |
| 1996 | |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 1997 | vmx_flush_tlb(vcpu); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 1998 | vmcs_writel(GUEST_CR3, guest_cr3); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1999 | } |
| 2000 | |
| 2001 | static void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4) |
| 2002 | { |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 2003 | unsigned long hw_cr4 = cr4 | (to_vmx(vcpu)->rmode.vm86_active ? |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 2004 | KVM_RMODE_VM_CR4_ALWAYS_ON : KVM_PMODE_VM_CR4_ALWAYS_ON); |
| 2005 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 2006 | vcpu->arch.cr4 = cr4; |
Avi Kivity | bc23008 | 2009-12-08 12:14:42 +0200 | [diff] [blame] | 2007 | if (enable_ept) { |
| 2008 | if (!is_paging(vcpu)) { |
| 2009 | hw_cr4 &= ~X86_CR4_PAE; |
| 2010 | hw_cr4 |= X86_CR4_PSE; |
| 2011 | } else if (!(cr4 & X86_CR4_PAE)) { |
| 2012 | hw_cr4 &= ~X86_CR4_PAE; |
| 2013 | } |
| 2014 | } |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 2015 | |
| 2016 | vmcs_writel(CR4_READ_SHADOW, cr4); |
| 2017 | vmcs_writel(GUEST_CR4, hw_cr4); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2018 | } |
| 2019 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2020 | static u64 vmx_get_segment_base(struct kvm_vcpu *vcpu, int seg) |
| 2021 | { |
| 2022 | struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg]; |
| 2023 | |
| 2024 | return vmcs_readl(sf->base); |
| 2025 | } |
| 2026 | |
| 2027 | static void vmx_get_segment(struct kvm_vcpu *vcpu, |
| 2028 | struct kvm_segment *var, int seg) |
| 2029 | { |
| 2030 | struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg]; |
| 2031 | u32 ar; |
| 2032 | |
| 2033 | var->base = vmcs_readl(sf->base); |
| 2034 | var->limit = vmcs_read32(sf->limit); |
| 2035 | var->selector = vmcs_read16(sf->selector); |
| 2036 | ar = vmcs_read32(sf->ar_bytes); |
Avi Kivity | 9fd4a3b | 2009-01-04 23:43:42 +0200 | [diff] [blame] | 2037 | if ((ar & AR_UNUSABLE_MASK) && !emulate_invalid_guest_state) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2038 | ar = 0; |
| 2039 | var->type = ar & 15; |
| 2040 | var->s = (ar >> 4) & 1; |
| 2041 | var->dpl = (ar >> 5) & 3; |
| 2042 | var->present = (ar >> 7) & 1; |
| 2043 | var->avl = (ar >> 12) & 1; |
| 2044 | var->l = (ar >> 13) & 1; |
| 2045 | var->db = (ar >> 14) & 1; |
| 2046 | var->g = (ar >> 15) & 1; |
| 2047 | var->unusable = (ar >> 16) & 1; |
| 2048 | } |
| 2049 | |
Izik Eidus | 2e4d265 | 2008-03-24 19:38:34 +0200 | [diff] [blame] | 2050 | static int vmx_get_cpl(struct kvm_vcpu *vcpu) |
| 2051 | { |
Avi Kivity | 3eeb328 | 2010-01-21 15:31:48 +0200 | [diff] [blame] | 2052 | if (!is_protmode(vcpu)) |
Izik Eidus | 2e4d265 | 2008-03-24 19:38:34 +0200 | [diff] [blame] | 2053 | return 0; |
| 2054 | |
| 2055 | if (vmx_get_rflags(vcpu) & X86_EFLAGS_VM) /* if virtual 8086 */ |
| 2056 | return 3; |
| 2057 | |
Avi Kivity | eab4b8a | 2009-08-04 15:02:54 +0300 | [diff] [blame] | 2058 | return vmcs_read16(GUEST_CS_SELECTOR) & 3; |
Izik Eidus | 2e4d265 | 2008-03-24 19:38:34 +0200 | [diff] [blame] | 2059 | } |
| 2060 | |
Avi Kivity | 653e310 | 2007-05-07 10:55:37 +0300 | [diff] [blame] | 2061 | static u32 vmx_segment_access_rights(struct kvm_segment *var) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2062 | { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2063 | u32 ar; |
| 2064 | |
Avi Kivity | 653e310 | 2007-05-07 10:55:37 +0300 | [diff] [blame] | 2065 | if (var->unusable) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2066 | ar = 1 << 16; |
| 2067 | else { |
| 2068 | ar = var->type & 15; |
| 2069 | ar |= (var->s & 1) << 4; |
| 2070 | ar |= (var->dpl & 3) << 5; |
| 2071 | ar |= (var->present & 1) << 7; |
| 2072 | ar |= (var->avl & 1) << 12; |
| 2073 | ar |= (var->l & 1) << 13; |
| 2074 | ar |= (var->db & 1) << 14; |
| 2075 | ar |= (var->g & 1) << 15; |
| 2076 | } |
Uri Lublin | f7fbf1f | 2006-12-13 00:34:00 -0800 | [diff] [blame] | 2077 | if (ar == 0) /* a 0 value means unusable */ |
| 2078 | ar = AR_UNUSABLE_MASK; |
Avi Kivity | 653e310 | 2007-05-07 10:55:37 +0300 | [diff] [blame] | 2079 | |
| 2080 | return ar; |
| 2081 | } |
| 2082 | |
| 2083 | static void vmx_set_segment(struct kvm_vcpu *vcpu, |
| 2084 | struct kvm_segment *var, int seg) |
| 2085 | { |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 2086 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Avi Kivity | 653e310 | 2007-05-07 10:55:37 +0300 | [diff] [blame] | 2087 | struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg]; |
| 2088 | u32 ar; |
| 2089 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 2090 | if (vmx->rmode.vm86_active && seg == VCPU_SREG_TR) { |
| 2091 | vmx->rmode.tr.selector = var->selector; |
| 2092 | vmx->rmode.tr.base = var->base; |
| 2093 | vmx->rmode.tr.limit = var->limit; |
| 2094 | vmx->rmode.tr.ar = vmx_segment_access_rights(var); |
Avi Kivity | 653e310 | 2007-05-07 10:55:37 +0300 | [diff] [blame] | 2095 | return; |
| 2096 | } |
| 2097 | vmcs_writel(sf->base, var->base); |
| 2098 | vmcs_write32(sf->limit, var->limit); |
| 2099 | vmcs_write16(sf->selector, var->selector); |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 2100 | if (vmx->rmode.vm86_active && var->s) { |
Avi Kivity | 653e310 | 2007-05-07 10:55:37 +0300 | [diff] [blame] | 2101 | /* |
| 2102 | * Hack real-mode segments into vm86 compatibility. |
| 2103 | */ |
| 2104 | if (var->base == 0xffff0000 && var->selector == 0xf000) |
| 2105 | vmcs_writel(sf->base, 0xf0000); |
| 2106 | ar = 0xf3; |
| 2107 | } else |
| 2108 | ar = vmx_segment_access_rights(var); |
Nitin A Kamble | 3a624e2 | 2009-06-08 11:34:16 -0700 | [diff] [blame] | 2109 | |
| 2110 | /* |
| 2111 | * Fix the "Accessed" bit in AR field of segment registers for older |
| 2112 | * qemu binaries. |
| 2113 | * IA32 arch specifies that at the time of processor reset the |
| 2114 | * "Accessed" bit in the AR field of segment registers is 1. And qemu |
| 2115 | * is setting it to 0 in the usedland code. This causes invalid guest |
| 2116 | * state vmexit when "unrestricted guest" mode is turned on. |
| 2117 | * Fix for this setup issue in cpu_reset is being pushed in the qemu |
| 2118 | * tree. Newer qemu binaries with that qemu fix would not need this |
| 2119 | * kvm hack. |
| 2120 | */ |
| 2121 | if (enable_unrestricted_guest && (seg != VCPU_SREG_LDTR)) |
| 2122 | ar |= 0x1; /* Accessed */ |
| 2123 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2124 | vmcs_write32(sf->ar_bytes, ar); |
| 2125 | } |
| 2126 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2127 | static void vmx_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l) |
| 2128 | { |
| 2129 | u32 ar = vmcs_read32(GUEST_CS_AR_BYTES); |
| 2130 | |
| 2131 | *db = (ar >> 14) & 1; |
| 2132 | *l = (ar >> 13) & 1; |
| 2133 | } |
| 2134 | |
Gleb Natapov | 89a27f4 | 2010-02-16 10:51:48 +0200 | [diff] [blame] | 2135 | static void vmx_get_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2136 | { |
Gleb Natapov | 89a27f4 | 2010-02-16 10:51:48 +0200 | [diff] [blame] | 2137 | dt->size = vmcs_read32(GUEST_IDTR_LIMIT); |
| 2138 | dt->address = vmcs_readl(GUEST_IDTR_BASE); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2139 | } |
| 2140 | |
Gleb Natapov | 89a27f4 | 2010-02-16 10:51:48 +0200 | [diff] [blame] | 2141 | static void vmx_set_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2142 | { |
Gleb Natapov | 89a27f4 | 2010-02-16 10:51:48 +0200 | [diff] [blame] | 2143 | vmcs_write32(GUEST_IDTR_LIMIT, dt->size); |
| 2144 | vmcs_writel(GUEST_IDTR_BASE, dt->address); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2145 | } |
| 2146 | |
Gleb Natapov | 89a27f4 | 2010-02-16 10:51:48 +0200 | [diff] [blame] | 2147 | static void vmx_get_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2148 | { |
Gleb Natapov | 89a27f4 | 2010-02-16 10:51:48 +0200 | [diff] [blame] | 2149 | dt->size = vmcs_read32(GUEST_GDTR_LIMIT); |
| 2150 | dt->address = vmcs_readl(GUEST_GDTR_BASE); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2151 | } |
| 2152 | |
Gleb Natapov | 89a27f4 | 2010-02-16 10:51:48 +0200 | [diff] [blame] | 2153 | static void vmx_set_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2154 | { |
Gleb Natapov | 89a27f4 | 2010-02-16 10:51:48 +0200 | [diff] [blame] | 2155 | vmcs_write32(GUEST_GDTR_LIMIT, dt->size); |
| 2156 | vmcs_writel(GUEST_GDTR_BASE, dt->address); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2157 | } |
| 2158 | |
Mohammed Gamal | 648dfaa | 2008-08-17 16:38:32 +0300 | [diff] [blame] | 2159 | static bool rmode_segment_valid(struct kvm_vcpu *vcpu, int seg) |
| 2160 | { |
| 2161 | struct kvm_segment var; |
| 2162 | u32 ar; |
| 2163 | |
| 2164 | vmx_get_segment(vcpu, &var, seg); |
| 2165 | ar = vmx_segment_access_rights(&var); |
| 2166 | |
| 2167 | if (var.base != (var.selector << 4)) |
| 2168 | return false; |
| 2169 | if (var.limit != 0xffff) |
| 2170 | return false; |
| 2171 | if (ar != 0xf3) |
| 2172 | return false; |
| 2173 | |
| 2174 | return true; |
| 2175 | } |
| 2176 | |
| 2177 | static bool code_segment_valid(struct kvm_vcpu *vcpu) |
| 2178 | { |
| 2179 | struct kvm_segment cs; |
| 2180 | unsigned int cs_rpl; |
| 2181 | |
| 2182 | vmx_get_segment(vcpu, &cs, VCPU_SREG_CS); |
| 2183 | cs_rpl = cs.selector & SELECTOR_RPL_MASK; |
| 2184 | |
Avi Kivity | 1872a3f | 2009-01-04 23:26:52 +0200 | [diff] [blame] | 2185 | if (cs.unusable) |
| 2186 | return false; |
Mohammed Gamal | 648dfaa | 2008-08-17 16:38:32 +0300 | [diff] [blame] | 2187 | if (~cs.type & (AR_TYPE_CODE_MASK|AR_TYPE_ACCESSES_MASK)) |
| 2188 | return false; |
| 2189 | if (!cs.s) |
| 2190 | return false; |
Avi Kivity | 1872a3f | 2009-01-04 23:26:52 +0200 | [diff] [blame] | 2191 | if (cs.type & AR_TYPE_WRITEABLE_MASK) { |
Mohammed Gamal | 648dfaa | 2008-08-17 16:38:32 +0300 | [diff] [blame] | 2192 | if (cs.dpl > cs_rpl) |
| 2193 | return false; |
Avi Kivity | 1872a3f | 2009-01-04 23:26:52 +0200 | [diff] [blame] | 2194 | } else { |
Mohammed Gamal | 648dfaa | 2008-08-17 16:38:32 +0300 | [diff] [blame] | 2195 | if (cs.dpl != cs_rpl) |
| 2196 | return false; |
| 2197 | } |
| 2198 | if (!cs.present) |
| 2199 | return false; |
| 2200 | |
| 2201 | /* TODO: Add Reserved field check, this'll require a new member in the kvm_segment_field structure */ |
| 2202 | return true; |
| 2203 | } |
| 2204 | |
| 2205 | static bool stack_segment_valid(struct kvm_vcpu *vcpu) |
| 2206 | { |
| 2207 | struct kvm_segment ss; |
| 2208 | unsigned int ss_rpl; |
| 2209 | |
| 2210 | vmx_get_segment(vcpu, &ss, VCPU_SREG_SS); |
| 2211 | ss_rpl = ss.selector & SELECTOR_RPL_MASK; |
| 2212 | |
Avi Kivity | 1872a3f | 2009-01-04 23:26:52 +0200 | [diff] [blame] | 2213 | if (ss.unusable) |
| 2214 | return true; |
| 2215 | if (ss.type != 3 && ss.type != 7) |
Mohammed Gamal | 648dfaa | 2008-08-17 16:38:32 +0300 | [diff] [blame] | 2216 | return false; |
| 2217 | if (!ss.s) |
| 2218 | return false; |
| 2219 | if (ss.dpl != ss_rpl) /* DPL != RPL */ |
| 2220 | return false; |
| 2221 | if (!ss.present) |
| 2222 | return false; |
| 2223 | |
| 2224 | return true; |
| 2225 | } |
| 2226 | |
| 2227 | static bool data_segment_valid(struct kvm_vcpu *vcpu, int seg) |
| 2228 | { |
| 2229 | struct kvm_segment var; |
| 2230 | unsigned int rpl; |
| 2231 | |
| 2232 | vmx_get_segment(vcpu, &var, seg); |
| 2233 | rpl = var.selector & SELECTOR_RPL_MASK; |
| 2234 | |
Avi Kivity | 1872a3f | 2009-01-04 23:26:52 +0200 | [diff] [blame] | 2235 | if (var.unusable) |
| 2236 | return true; |
Mohammed Gamal | 648dfaa | 2008-08-17 16:38:32 +0300 | [diff] [blame] | 2237 | if (!var.s) |
| 2238 | return false; |
| 2239 | if (!var.present) |
| 2240 | return false; |
| 2241 | if (~var.type & (AR_TYPE_CODE_MASK|AR_TYPE_WRITEABLE_MASK)) { |
| 2242 | if (var.dpl < rpl) /* DPL < RPL */ |
| 2243 | return false; |
| 2244 | } |
| 2245 | |
| 2246 | /* TODO: Add other members to kvm_segment_field to allow checking for other access |
| 2247 | * rights flags |
| 2248 | */ |
| 2249 | return true; |
| 2250 | } |
| 2251 | |
| 2252 | static bool tr_valid(struct kvm_vcpu *vcpu) |
| 2253 | { |
| 2254 | struct kvm_segment tr; |
| 2255 | |
| 2256 | vmx_get_segment(vcpu, &tr, VCPU_SREG_TR); |
| 2257 | |
Avi Kivity | 1872a3f | 2009-01-04 23:26:52 +0200 | [diff] [blame] | 2258 | if (tr.unusable) |
| 2259 | return false; |
Mohammed Gamal | 648dfaa | 2008-08-17 16:38:32 +0300 | [diff] [blame] | 2260 | if (tr.selector & SELECTOR_TI_MASK) /* TI = 1 */ |
| 2261 | return false; |
Avi Kivity | 1872a3f | 2009-01-04 23:26:52 +0200 | [diff] [blame] | 2262 | if (tr.type != 3 && tr.type != 11) /* TODO: Check if guest is in IA32e mode */ |
Mohammed Gamal | 648dfaa | 2008-08-17 16:38:32 +0300 | [diff] [blame] | 2263 | return false; |
| 2264 | if (!tr.present) |
| 2265 | return false; |
| 2266 | |
| 2267 | return true; |
| 2268 | } |
| 2269 | |
| 2270 | static bool ldtr_valid(struct kvm_vcpu *vcpu) |
| 2271 | { |
| 2272 | struct kvm_segment ldtr; |
| 2273 | |
| 2274 | vmx_get_segment(vcpu, &ldtr, VCPU_SREG_LDTR); |
| 2275 | |
Avi Kivity | 1872a3f | 2009-01-04 23:26:52 +0200 | [diff] [blame] | 2276 | if (ldtr.unusable) |
| 2277 | return true; |
Mohammed Gamal | 648dfaa | 2008-08-17 16:38:32 +0300 | [diff] [blame] | 2278 | if (ldtr.selector & SELECTOR_TI_MASK) /* TI = 1 */ |
| 2279 | return false; |
| 2280 | if (ldtr.type != 2) |
| 2281 | return false; |
| 2282 | if (!ldtr.present) |
| 2283 | return false; |
| 2284 | |
| 2285 | return true; |
| 2286 | } |
| 2287 | |
| 2288 | static bool cs_ss_rpl_check(struct kvm_vcpu *vcpu) |
| 2289 | { |
| 2290 | struct kvm_segment cs, ss; |
| 2291 | |
| 2292 | vmx_get_segment(vcpu, &cs, VCPU_SREG_CS); |
| 2293 | vmx_get_segment(vcpu, &ss, VCPU_SREG_SS); |
| 2294 | |
| 2295 | return ((cs.selector & SELECTOR_RPL_MASK) == |
| 2296 | (ss.selector & SELECTOR_RPL_MASK)); |
| 2297 | } |
| 2298 | |
| 2299 | /* |
| 2300 | * Check if guest state is valid. Returns true if valid, false if |
| 2301 | * not. |
| 2302 | * We assume that registers are always usable |
| 2303 | */ |
| 2304 | static bool guest_state_valid(struct kvm_vcpu *vcpu) |
| 2305 | { |
| 2306 | /* real mode guest state checks */ |
Avi Kivity | 3eeb328 | 2010-01-21 15:31:48 +0200 | [diff] [blame] | 2307 | if (!is_protmode(vcpu)) { |
Mohammed Gamal | 648dfaa | 2008-08-17 16:38:32 +0300 | [diff] [blame] | 2308 | if (!rmode_segment_valid(vcpu, VCPU_SREG_CS)) |
| 2309 | return false; |
| 2310 | if (!rmode_segment_valid(vcpu, VCPU_SREG_SS)) |
| 2311 | return false; |
| 2312 | if (!rmode_segment_valid(vcpu, VCPU_SREG_DS)) |
| 2313 | return false; |
| 2314 | if (!rmode_segment_valid(vcpu, VCPU_SREG_ES)) |
| 2315 | return false; |
| 2316 | if (!rmode_segment_valid(vcpu, VCPU_SREG_FS)) |
| 2317 | return false; |
| 2318 | if (!rmode_segment_valid(vcpu, VCPU_SREG_GS)) |
| 2319 | return false; |
| 2320 | } else { |
| 2321 | /* protected mode guest state checks */ |
| 2322 | if (!cs_ss_rpl_check(vcpu)) |
| 2323 | return false; |
| 2324 | if (!code_segment_valid(vcpu)) |
| 2325 | return false; |
| 2326 | if (!stack_segment_valid(vcpu)) |
| 2327 | return false; |
| 2328 | if (!data_segment_valid(vcpu, VCPU_SREG_DS)) |
| 2329 | return false; |
| 2330 | if (!data_segment_valid(vcpu, VCPU_SREG_ES)) |
| 2331 | return false; |
| 2332 | if (!data_segment_valid(vcpu, VCPU_SREG_FS)) |
| 2333 | return false; |
| 2334 | if (!data_segment_valid(vcpu, VCPU_SREG_GS)) |
| 2335 | return false; |
| 2336 | if (!tr_valid(vcpu)) |
| 2337 | return false; |
| 2338 | if (!ldtr_valid(vcpu)) |
| 2339 | return false; |
| 2340 | } |
| 2341 | /* TODO: |
| 2342 | * - Add checks on RIP |
| 2343 | * - Add checks on RFLAGS |
| 2344 | */ |
| 2345 | |
| 2346 | return true; |
| 2347 | } |
| 2348 | |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 2349 | static int init_rmode_tss(struct kvm *kvm) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2350 | { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2351 | gfn_t fn = rmode_tss_base(kvm) >> PAGE_SHIFT; |
Izik Eidus | 195aefd | 2007-10-01 22:14:18 +0200 | [diff] [blame] | 2352 | u16 data = 0; |
Marcelo Tosatti | 10589a4 | 2007-12-20 19:18:22 -0500 | [diff] [blame] | 2353 | int ret = 0; |
Izik Eidus | 195aefd | 2007-10-01 22:14:18 +0200 | [diff] [blame] | 2354 | int r; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2355 | |
Izik Eidus | 195aefd | 2007-10-01 22:14:18 +0200 | [diff] [blame] | 2356 | r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE); |
| 2357 | if (r < 0) |
Marcelo Tosatti | 10589a4 | 2007-12-20 19:18:22 -0500 | [diff] [blame] | 2358 | goto out; |
Izik Eidus | 195aefd | 2007-10-01 22:14:18 +0200 | [diff] [blame] | 2359 | data = TSS_BASE_SIZE + TSS_REDIRECTION_SIZE; |
Sheng Yang | 464d17c | 2008-08-13 14:10:33 +0800 | [diff] [blame] | 2360 | r = kvm_write_guest_page(kvm, fn++, &data, |
| 2361 | TSS_IOPB_BASE_OFFSET, sizeof(u16)); |
Izik Eidus | 195aefd | 2007-10-01 22:14:18 +0200 | [diff] [blame] | 2362 | if (r < 0) |
Marcelo Tosatti | 10589a4 | 2007-12-20 19:18:22 -0500 | [diff] [blame] | 2363 | goto out; |
Izik Eidus | 195aefd | 2007-10-01 22:14:18 +0200 | [diff] [blame] | 2364 | r = kvm_clear_guest_page(kvm, fn++, 0, PAGE_SIZE); |
| 2365 | if (r < 0) |
Marcelo Tosatti | 10589a4 | 2007-12-20 19:18:22 -0500 | [diff] [blame] | 2366 | goto out; |
Izik Eidus | 195aefd | 2007-10-01 22:14:18 +0200 | [diff] [blame] | 2367 | r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE); |
| 2368 | if (r < 0) |
Marcelo Tosatti | 10589a4 | 2007-12-20 19:18:22 -0500 | [diff] [blame] | 2369 | goto out; |
Izik Eidus | 195aefd | 2007-10-01 22:14:18 +0200 | [diff] [blame] | 2370 | data = ~0; |
Marcelo Tosatti | 10589a4 | 2007-12-20 19:18:22 -0500 | [diff] [blame] | 2371 | r = kvm_write_guest_page(kvm, fn, &data, |
| 2372 | RMODE_TSS_SIZE - 2 * PAGE_SIZE - 1, |
| 2373 | sizeof(u8)); |
Izik Eidus | 195aefd | 2007-10-01 22:14:18 +0200 | [diff] [blame] | 2374 | if (r < 0) |
Marcelo Tosatti | 10589a4 | 2007-12-20 19:18:22 -0500 | [diff] [blame] | 2375 | goto out; |
| 2376 | |
| 2377 | ret = 1; |
| 2378 | out: |
Marcelo Tosatti | 10589a4 | 2007-12-20 19:18:22 -0500 | [diff] [blame] | 2379 | return ret; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2380 | } |
| 2381 | |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2382 | static int init_rmode_identity_map(struct kvm *kvm) |
| 2383 | { |
| 2384 | int i, r, ret; |
| 2385 | pfn_t identity_map_pfn; |
| 2386 | u32 tmp; |
| 2387 | |
Avi Kivity | 089d034 | 2009-03-23 18:26:32 +0200 | [diff] [blame] | 2388 | if (!enable_ept) |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2389 | return 1; |
| 2390 | if (unlikely(!kvm->arch.ept_identity_pagetable)) { |
| 2391 | printk(KERN_ERR "EPT: identity-mapping pagetable " |
| 2392 | "haven't been allocated!\n"); |
| 2393 | return 0; |
| 2394 | } |
| 2395 | if (likely(kvm->arch.ept_identity_pagetable_done)) |
| 2396 | return 1; |
| 2397 | ret = 0; |
Sheng Yang | b927a3c | 2009-07-21 10:42:48 +0800 | [diff] [blame] | 2398 | identity_map_pfn = kvm->arch.ept_identity_map_addr >> PAGE_SHIFT; |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2399 | r = kvm_clear_guest_page(kvm, identity_map_pfn, 0, PAGE_SIZE); |
| 2400 | if (r < 0) |
| 2401 | goto out; |
| 2402 | /* Set up identity-mapping pagetable for EPT in real mode */ |
| 2403 | for (i = 0; i < PT32_ENT_PER_PAGE; i++) { |
| 2404 | tmp = (i << 22) + (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | |
| 2405 | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_PSE); |
| 2406 | r = kvm_write_guest_page(kvm, identity_map_pfn, |
| 2407 | &tmp, i * sizeof(tmp), sizeof(tmp)); |
| 2408 | if (r < 0) |
| 2409 | goto out; |
| 2410 | } |
| 2411 | kvm->arch.ept_identity_pagetable_done = true; |
| 2412 | ret = 1; |
| 2413 | out: |
| 2414 | return ret; |
| 2415 | } |
| 2416 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2417 | static void seg_setup(int seg) |
| 2418 | { |
| 2419 | struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg]; |
Nitin A Kamble | 3a624e2 | 2009-06-08 11:34:16 -0700 | [diff] [blame] | 2420 | unsigned int ar; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2421 | |
| 2422 | vmcs_write16(sf->selector, 0); |
| 2423 | vmcs_writel(sf->base, 0); |
| 2424 | vmcs_write32(sf->limit, 0xffff); |
Nitin A Kamble | 3a624e2 | 2009-06-08 11:34:16 -0700 | [diff] [blame] | 2425 | if (enable_unrestricted_guest) { |
| 2426 | ar = 0x93; |
| 2427 | if (seg == VCPU_SREG_CS) |
| 2428 | ar |= 0x08; /* code segment */ |
| 2429 | } else |
| 2430 | ar = 0xf3; |
| 2431 | |
| 2432 | vmcs_write32(sf->ar_bytes, ar); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2433 | } |
| 2434 | |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 2435 | static int alloc_apic_access_page(struct kvm *kvm) |
| 2436 | { |
| 2437 | struct kvm_userspace_memory_region kvm_userspace_mem; |
| 2438 | int r = 0; |
| 2439 | |
Marcelo Tosatti | 79fac95 | 2009-12-23 14:35:26 -0200 | [diff] [blame] | 2440 | mutex_lock(&kvm->slots_lock); |
Zhang Xiantao | bfc6d22 | 2007-12-14 10:20:16 +0800 | [diff] [blame] | 2441 | if (kvm->arch.apic_access_page) |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 2442 | goto out; |
| 2443 | kvm_userspace_mem.slot = APIC_ACCESS_PAGE_PRIVATE_MEMSLOT; |
| 2444 | kvm_userspace_mem.flags = 0; |
| 2445 | kvm_userspace_mem.guest_phys_addr = 0xfee00000ULL; |
| 2446 | kvm_userspace_mem.memory_size = PAGE_SIZE; |
| 2447 | r = __kvm_set_memory_region(kvm, &kvm_userspace_mem, 0); |
| 2448 | if (r) |
| 2449 | goto out; |
Izik Eidus | 72dc67a | 2008-02-10 18:04:15 +0200 | [diff] [blame] | 2450 | |
Zhang Xiantao | bfc6d22 | 2007-12-14 10:20:16 +0800 | [diff] [blame] | 2451 | kvm->arch.apic_access_page = gfn_to_page(kvm, 0xfee00); |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 2452 | out: |
Marcelo Tosatti | 79fac95 | 2009-12-23 14:35:26 -0200 | [diff] [blame] | 2453 | mutex_unlock(&kvm->slots_lock); |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 2454 | return r; |
| 2455 | } |
| 2456 | |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2457 | static int alloc_identity_pagetable(struct kvm *kvm) |
| 2458 | { |
| 2459 | struct kvm_userspace_memory_region kvm_userspace_mem; |
| 2460 | int r = 0; |
| 2461 | |
Marcelo Tosatti | 79fac95 | 2009-12-23 14:35:26 -0200 | [diff] [blame] | 2462 | mutex_lock(&kvm->slots_lock); |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2463 | if (kvm->arch.ept_identity_pagetable) |
| 2464 | goto out; |
| 2465 | kvm_userspace_mem.slot = IDENTITY_PAGETABLE_PRIVATE_MEMSLOT; |
| 2466 | kvm_userspace_mem.flags = 0; |
Sheng Yang | b927a3c | 2009-07-21 10:42:48 +0800 | [diff] [blame] | 2467 | kvm_userspace_mem.guest_phys_addr = |
| 2468 | kvm->arch.ept_identity_map_addr; |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2469 | kvm_userspace_mem.memory_size = PAGE_SIZE; |
| 2470 | r = __kvm_set_memory_region(kvm, &kvm_userspace_mem, 0); |
| 2471 | if (r) |
| 2472 | goto out; |
| 2473 | |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2474 | kvm->arch.ept_identity_pagetable = gfn_to_page(kvm, |
Sheng Yang | b927a3c | 2009-07-21 10:42:48 +0800 | [diff] [blame] | 2475 | kvm->arch.ept_identity_map_addr >> PAGE_SHIFT); |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2476 | out: |
Marcelo Tosatti | 79fac95 | 2009-12-23 14:35:26 -0200 | [diff] [blame] | 2477 | mutex_unlock(&kvm->slots_lock); |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2478 | return r; |
| 2479 | } |
| 2480 | |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 2481 | static void allocate_vpid(struct vcpu_vmx *vmx) |
| 2482 | { |
| 2483 | int vpid; |
| 2484 | |
| 2485 | vmx->vpid = 0; |
Avi Kivity | 919818a | 2009-03-23 18:01:29 +0200 | [diff] [blame] | 2486 | if (!enable_vpid) |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 2487 | return; |
| 2488 | spin_lock(&vmx_vpid_lock); |
| 2489 | vpid = find_first_zero_bit(vmx_vpid_bitmap, VMX_NR_VPIDS); |
| 2490 | if (vpid < VMX_NR_VPIDS) { |
| 2491 | vmx->vpid = vpid; |
| 2492 | __set_bit(vpid, vmx_vpid_bitmap); |
| 2493 | } |
| 2494 | spin_unlock(&vmx_vpid_lock); |
| 2495 | } |
| 2496 | |
Lai Jiangshan | cdbecfc | 2010-04-17 16:41:47 +0800 | [diff] [blame] | 2497 | static void free_vpid(struct vcpu_vmx *vmx) |
| 2498 | { |
| 2499 | if (!enable_vpid) |
| 2500 | return; |
| 2501 | spin_lock(&vmx_vpid_lock); |
| 2502 | if (vmx->vpid != 0) |
| 2503 | __clear_bit(vmx->vpid, vmx_vpid_bitmap); |
| 2504 | spin_unlock(&vmx_vpid_lock); |
| 2505 | } |
| 2506 | |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 2507 | static void __vmx_disable_intercept_for_msr(unsigned long *msr_bitmap, u32 msr) |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 2508 | { |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 2509 | int f = sizeof(unsigned long); |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 2510 | |
| 2511 | if (!cpu_has_vmx_msr_bitmap()) |
| 2512 | return; |
| 2513 | |
| 2514 | /* |
| 2515 | * See Intel PRM Vol. 3, 20.6.9 (MSR-Bitmap Address). Early manuals |
| 2516 | * have the write-low and read-high bitmap offsets the wrong way round. |
| 2517 | * We can control MSRs 0x00000000-0x00001fff and 0xc0000000-0xc0001fff. |
| 2518 | */ |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 2519 | if (msr <= 0x1fff) { |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 2520 | __clear_bit(msr, msr_bitmap + 0x000 / f); /* read-low */ |
| 2521 | __clear_bit(msr, msr_bitmap + 0x800 / f); /* write-low */ |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 2522 | } else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) { |
| 2523 | msr &= 0x1fff; |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 2524 | __clear_bit(msr, msr_bitmap + 0x400 / f); /* read-high */ |
| 2525 | __clear_bit(msr, msr_bitmap + 0xc00 / f); /* write-high */ |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 2526 | } |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 2527 | } |
| 2528 | |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 2529 | static void vmx_disable_intercept_for_msr(u32 msr, bool longmode_only) |
| 2530 | { |
| 2531 | if (!longmode_only) |
| 2532 | __vmx_disable_intercept_for_msr(vmx_msr_bitmap_legacy, msr); |
| 2533 | __vmx_disable_intercept_for_msr(vmx_msr_bitmap_longmode, msr); |
| 2534 | } |
| 2535 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2536 | /* |
| 2537 | * Sets up the vmcs for emulated real mode. |
| 2538 | */ |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 2539 | static int vmx_vcpu_setup(struct vcpu_vmx *vmx) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2540 | { |
Sheng Yang | 468d472 | 2008-10-09 16:01:55 +0800 | [diff] [blame] | 2541 | u32 host_sysenter_cs, msr_low, msr_high; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2542 | u32 junk; |
Zachary Amsden | f4e1b3c | 2010-08-19 22:07:16 -1000 | [diff] [blame] | 2543 | u64 host_pat; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2544 | unsigned long a; |
Gleb Natapov | 89a27f4 | 2010-02-16 10:51:48 +0200 | [diff] [blame] | 2545 | struct desc_ptr dt; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2546 | int i; |
Avi Kivity | cd2276a | 2007-05-14 20:41:13 +0300 | [diff] [blame] | 2547 | unsigned long kvm_vmx_return; |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 2548 | u32 exec_control; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2549 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2550 | /* I/O */ |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 2551 | vmcs_write64(IO_BITMAP_A, __pa(vmx_io_bitmap_a)); |
| 2552 | vmcs_write64(IO_BITMAP_B, __pa(vmx_io_bitmap_b)); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2553 | |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 2554 | if (cpu_has_vmx_msr_bitmap()) |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 2555 | vmcs_write64(MSR_BITMAP, __pa(vmx_msr_bitmap_legacy)); |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 2556 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2557 | vmcs_write64(VMCS_LINK_POINTER, -1ull); /* 22.3.1.5 */ |
| 2558 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2559 | /* Control */ |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 2560 | vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, |
| 2561 | vmcs_config.pin_based_exec_ctrl); |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 2562 | |
| 2563 | exec_control = vmcs_config.cpu_based_exec_ctrl; |
| 2564 | if (!vm_need_tpr_shadow(vmx->vcpu.kvm)) { |
| 2565 | exec_control &= ~CPU_BASED_TPR_SHADOW; |
| 2566 | #ifdef CONFIG_X86_64 |
| 2567 | exec_control |= CPU_BASED_CR8_STORE_EXITING | |
| 2568 | CPU_BASED_CR8_LOAD_EXITING; |
| 2569 | #endif |
| 2570 | } |
Avi Kivity | 089d034 | 2009-03-23 18:26:32 +0200 | [diff] [blame] | 2571 | if (!enable_ept) |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 2572 | exec_control |= CPU_BASED_CR3_STORE_EXITING | |
Marcelo Tosatti | 83dbc83 | 2008-10-07 17:01:27 -0300 | [diff] [blame] | 2573 | CPU_BASED_CR3_LOAD_EXITING | |
| 2574 | CPU_BASED_INVLPG_EXITING; |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 2575 | vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, exec_control); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2576 | |
Sheng Yang | 83ff3b9 | 2007-11-21 14:33:25 +0800 | [diff] [blame] | 2577 | if (cpu_has_secondary_exec_ctrls()) { |
| 2578 | exec_control = vmcs_config.cpu_based_2nd_exec_ctrl; |
| 2579 | if (!vm_need_virtualize_apic_accesses(vmx->vcpu.kvm)) |
| 2580 | exec_control &= |
| 2581 | ~SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES; |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 2582 | if (vmx->vpid == 0) |
| 2583 | exec_control &= ~SECONDARY_EXEC_ENABLE_VPID; |
Sheng Yang | 046d871 | 2009-11-27 16:46:26 +0800 | [diff] [blame] | 2584 | if (!enable_ept) { |
Sheng Yang | d56f546 | 2008-04-25 10:13:16 +0800 | [diff] [blame] | 2585 | exec_control &= ~SECONDARY_EXEC_ENABLE_EPT; |
Sheng Yang | 046d871 | 2009-11-27 16:46:26 +0800 | [diff] [blame] | 2586 | enable_unrestricted_guest = 0; |
| 2587 | } |
Nitin A Kamble | 3a624e2 | 2009-06-08 11:34:16 -0700 | [diff] [blame] | 2588 | if (!enable_unrestricted_guest) |
| 2589 | exec_control &= ~SECONDARY_EXEC_UNRESTRICTED_GUEST; |
Zhai, Edwin | 4b8d54f | 2009-10-09 18:03:20 +0800 | [diff] [blame] | 2590 | if (!ple_gap) |
| 2591 | exec_control &= ~SECONDARY_EXEC_PAUSE_LOOP_EXITING; |
Sheng Yang | 83ff3b9 | 2007-11-21 14:33:25 +0800 | [diff] [blame] | 2592 | vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control); |
| 2593 | } |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 2594 | |
Zhai, Edwin | 4b8d54f | 2009-10-09 18:03:20 +0800 | [diff] [blame] | 2595 | if (ple_gap) { |
| 2596 | vmcs_write32(PLE_GAP, ple_gap); |
| 2597 | vmcs_write32(PLE_WINDOW, ple_window); |
| 2598 | } |
| 2599 | |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 2600 | vmcs_write32(PAGE_FAULT_ERROR_CODE_MASK, !!bypass_guest_pf); |
| 2601 | vmcs_write32(PAGE_FAULT_ERROR_CODE_MATCH, !!bypass_guest_pf); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2602 | vmcs_write32(CR3_TARGET_COUNT, 0); /* 22.2.1 */ |
| 2603 | |
Avi Kivity | 1c11e71 | 2010-05-03 16:05:44 +0300 | [diff] [blame] | 2604 | vmcs_writel(HOST_CR0, read_cr0() | X86_CR0_TS); /* 22.2.3 */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2605 | vmcs_writel(HOST_CR4, read_cr4()); /* 22.2.3, 22.2.5 */ |
| 2606 | vmcs_writel(HOST_CR3, read_cr3()); /* 22.2.3 FIXME: shadow tables */ |
| 2607 | |
| 2608 | vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS); /* 22.2.4 */ |
| 2609 | vmcs_write16(HOST_DS_SELECTOR, __KERNEL_DS); /* 22.2.4 */ |
| 2610 | vmcs_write16(HOST_ES_SELECTOR, __KERNEL_DS); /* 22.2.4 */ |
Avi Kivity | 9581d44 | 2010-10-19 16:46:55 +0200 | [diff] [blame] | 2611 | vmcs_write16(HOST_FS_SELECTOR, 0); /* 22.2.4 */ |
| 2612 | vmcs_write16(HOST_GS_SELECTOR, 0); /* 22.2.4 */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2613 | vmcs_write16(HOST_SS_SELECTOR, __KERNEL_DS); /* 22.2.4 */ |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 2614 | #ifdef CONFIG_X86_64 |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2615 | rdmsrl(MSR_FS_BASE, a); |
| 2616 | vmcs_writel(HOST_FS_BASE, a); /* 22.2.4 */ |
| 2617 | rdmsrl(MSR_GS_BASE, a); |
| 2618 | vmcs_writel(HOST_GS_BASE, a); /* 22.2.4 */ |
| 2619 | #else |
| 2620 | vmcs_writel(HOST_FS_BASE, 0); /* 22.2.4 */ |
| 2621 | vmcs_writel(HOST_GS_BASE, 0); /* 22.2.4 */ |
| 2622 | #endif |
| 2623 | |
| 2624 | vmcs_write16(HOST_TR_SELECTOR, GDT_ENTRY_TSS*8); /* 22.2.4 */ |
| 2625 | |
Wei Yongjun | ec68798 | 2010-03-05 12:11:48 +0800 | [diff] [blame] | 2626 | native_store_idt(&dt); |
Gleb Natapov | 89a27f4 | 2010-02-16 10:51:48 +0200 | [diff] [blame] | 2627 | vmcs_writel(HOST_IDTR_BASE, dt.address); /* 22.2.4 */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2628 | |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 2629 | asm("mov $.Lkvm_vmx_return, %0" : "=r"(kvm_vmx_return)); |
Avi Kivity | cd2276a | 2007-05-14 20:41:13 +0300 | [diff] [blame] | 2630 | vmcs_writel(HOST_RIP, kvm_vmx_return); /* 22.2.5 */ |
Eddie Dong | 2cc5156 | 2007-05-21 07:28:09 +0300 | [diff] [blame] | 2631 | vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0); |
| 2632 | vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, 0); |
Avi Kivity | 61d2ef2 | 2010-04-28 16:40:38 +0300 | [diff] [blame] | 2633 | vmcs_write64(VM_EXIT_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.host)); |
Eddie Dong | 2cc5156 | 2007-05-21 07:28:09 +0300 | [diff] [blame] | 2634 | vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, 0); |
Avi Kivity | 61d2ef2 | 2010-04-28 16:40:38 +0300 | [diff] [blame] | 2635 | vmcs_write64(VM_ENTRY_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.guest)); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2636 | |
| 2637 | rdmsr(MSR_IA32_SYSENTER_CS, host_sysenter_cs, junk); |
| 2638 | vmcs_write32(HOST_IA32_SYSENTER_CS, host_sysenter_cs); |
| 2639 | rdmsrl(MSR_IA32_SYSENTER_ESP, a); |
| 2640 | vmcs_writel(HOST_IA32_SYSENTER_ESP, a); /* 22.2.3 */ |
| 2641 | rdmsrl(MSR_IA32_SYSENTER_EIP, a); |
| 2642 | vmcs_writel(HOST_IA32_SYSENTER_EIP, a); /* 22.2.3 */ |
| 2643 | |
Sheng Yang | 468d472 | 2008-10-09 16:01:55 +0800 | [diff] [blame] | 2644 | if (vmcs_config.vmexit_ctrl & VM_EXIT_LOAD_IA32_PAT) { |
| 2645 | rdmsr(MSR_IA32_CR_PAT, msr_low, msr_high); |
| 2646 | host_pat = msr_low | ((u64) msr_high << 32); |
| 2647 | vmcs_write64(HOST_IA32_PAT, host_pat); |
| 2648 | } |
| 2649 | if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT) { |
| 2650 | rdmsr(MSR_IA32_CR_PAT, msr_low, msr_high); |
| 2651 | host_pat = msr_low | ((u64) msr_high << 32); |
| 2652 | /* Write the default value follow host pat */ |
| 2653 | vmcs_write64(GUEST_IA32_PAT, host_pat); |
| 2654 | /* Keep arch.pat sync with GUEST_IA32_PAT */ |
| 2655 | vmx->vcpu.arch.pat = host_pat; |
| 2656 | } |
| 2657 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2658 | for (i = 0; i < NR_VMX_MSR; ++i) { |
| 2659 | u32 index = vmx_msr_index[i]; |
| 2660 | u32 data_low, data_high; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 2661 | int j = vmx->nmsrs; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2662 | |
| 2663 | if (rdmsr_safe(index, &data_low, &data_high) < 0) |
| 2664 | continue; |
Avi Kivity | 432bd6c | 2007-01-31 23:48:13 -0800 | [diff] [blame] | 2665 | if (wrmsr_safe(index, data_low, data_high) < 0) |
| 2666 | continue; |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 2667 | vmx->guest_msrs[j].index = i; |
| 2668 | vmx->guest_msrs[j].data = 0; |
Avi Kivity | d569672 | 2009-12-02 12:28:47 +0200 | [diff] [blame] | 2669 | vmx->guest_msrs[j].mask = -1ull; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 2670 | ++vmx->nmsrs; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2671 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2672 | |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 2673 | vmcs_write32(VM_EXIT_CONTROLS, vmcs_config.vmexit_ctrl); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2674 | |
| 2675 | /* 22.2.1, 20.8.1 */ |
Yang, Sheng | 1c3d14f | 2007-07-29 11:07:42 +0300 | [diff] [blame] | 2676 | vmcs_write32(VM_ENTRY_CONTROLS, vmcs_config.vmentry_ctrl); |
| 2677 | |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2678 | vmcs_writel(CR0_GUEST_HOST_MASK, ~0UL); |
Avi Kivity | 4c38609 | 2009-12-07 12:26:18 +0200 | [diff] [blame] | 2679 | vmx->vcpu.arch.cr4_guest_owned_bits = KVM_CR4_GUEST_OWNED_BITS; |
Avi Kivity | ce03e4f | 2009-12-07 12:29:14 +0200 | [diff] [blame] | 2680 | if (enable_ept) |
| 2681 | vmx->vcpu.arch.cr4_guest_owned_bits |= X86_CR4_PGE; |
Avi Kivity | 4c38609 | 2009-12-07 12:26:18 +0200 | [diff] [blame] | 2682 | vmcs_writel(CR4_GUEST_HOST_MASK, ~vmx->vcpu.arch.cr4_guest_owned_bits); |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2683 | |
Zachary Amsden | 99e3e30 | 2010-08-19 22:07:17 -1000 | [diff] [blame] | 2684 | kvm_write_tsc(&vmx->vcpu, 0); |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 2685 | |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2686 | return 0; |
| 2687 | } |
| 2688 | |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2689 | static int init_rmode(struct kvm *kvm) |
| 2690 | { |
Xiao Guangrong | 4b9d3a0 | 2010-06-08 10:15:51 +0800 | [diff] [blame] | 2691 | int idx, ret = 0; |
| 2692 | |
| 2693 | idx = srcu_read_lock(&kvm->srcu); |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2694 | if (!init_rmode_tss(kvm)) |
Xiao Guangrong | 4b9d3a0 | 2010-06-08 10:15:51 +0800 | [diff] [blame] | 2695 | goto exit; |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2696 | if (!init_rmode_identity_map(kvm)) |
Xiao Guangrong | 4b9d3a0 | 2010-06-08 10:15:51 +0800 | [diff] [blame] | 2697 | goto exit; |
| 2698 | |
| 2699 | ret = 1; |
| 2700 | exit: |
| 2701 | srcu_read_unlock(&kvm->srcu, idx); |
| 2702 | return ret; |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2703 | } |
| 2704 | |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2705 | static int vmx_vcpu_reset(struct kvm_vcpu *vcpu) |
| 2706 | { |
| 2707 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
| 2708 | u64 msr; |
Xiao Guangrong | 4b9d3a0 | 2010-06-08 10:15:51 +0800 | [diff] [blame] | 2709 | int ret; |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2710 | |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 2711 | vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP)); |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 2712 | if (!init_rmode(vmx->vcpu.kvm)) { |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2713 | ret = -ENOMEM; |
| 2714 | goto out; |
| 2715 | } |
| 2716 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 2717 | vmx->rmode.vm86_active = 0; |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2718 | |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 2719 | vmx->soft_vnmi_blocked = 0; |
| 2720 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 2721 | vmx->vcpu.arch.regs[VCPU_REGS_RDX] = get_rdx_init_val(); |
Avi Kivity | 2d3ad1f | 2008-02-24 11:20:43 +0200 | [diff] [blame] | 2722 | kvm_set_cr8(&vmx->vcpu, 0); |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2723 | msr = 0xfee00000 | MSR_IA32_APICBASE_ENABLE; |
Gleb Natapov | c5af89b | 2009-06-09 15:56:26 +0300 | [diff] [blame] | 2724 | if (kvm_vcpu_is_bsp(&vmx->vcpu)) |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2725 | msr |= MSR_IA32_APICBASE_BSP; |
| 2726 | kvm_set_apic_base(&vmx->vcpu, msr); |
| 2727 | |
Jan Kiszka | 10ab25c | 2010-05-25 16:01:50 +0200 | [diff] [blame] | 2728 | ret = fx_init(&vmx->vcpu); |
| 2729 | if (ret != 0) |
| 2730 | goto out; |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2731 | |
Avi Kivity | 5706be0 | 2008-08-20 15:07:31 +0300 | [diff] [blame] | 2732 | seg_setup(VCPU_SREG_CS); |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2733 | /* |
| 2734 | * GUEST_CS_BASE should really be 0xffff0000, but VT vm86 mode |
| 2735 | * insists on having GUEST_CS_BASE == GUEST_CS_SELECTOR << 4. Sigh. |
| 2736 | */ |
Gleb Natapov | c5af89b | 2009-06-09 15:56:26 +0300 | [diff] [blame] | 2737 | if (kvm_vcpu_is_bsp(&vmx->vcpu)) { |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2738 | vmcs_write16(GUEST_CS_SELECTOR, 0xf000); |
| 2739 | vmcs_writel(GUEST_CS_BASE, 0x000f0000); |
| 2740 | } else { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 2741 | vmcs_write16(GUEST_CS_SELECTOR, vmx->vcpu.arch.sipi_vector << 8); |
| 2742 | vmcs_writel(GUEST_CS_BASE, vmx->vcpu.arch.sipi_vector << 12); |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2743 | } |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2744 | |
| 2745 | seg_setup(VCPU_SREG_DS); |
| 2746 | seg_setup(VCPU_SREG_ES); |
| 2747 | seg_setup(VCPU_SREG_FS); |
| 2748 | seg_setup(VCPU_SREG_GS); |
| 2749 | seg_setup(VCPU_SREG_SS); |
| 2750 | |
| 2751 | vmcs_write16(GUEST_TR_SELECTOR, 0); |
| 2752 | vmcs_writel(GUEST_TR_BASE, 0); |
| 2753 | vmcs_write32(GUEST_TR_LIMIT, 0xffff); |
| 2754 | vmcs_write32(GUEST_TR_AR_BYTES, 0x008b); |
| 2755 | |
| 2756 | vmcs_write16(GUEST_LDTR_SELECTOR, 0); |
| 2757 | vmcs_writel(GUEST_LDTR_BASE, 0); |
| 2758 | vmcs_write32(GUEST_LDTR_LIMIT, 0xffff); |
| 2759 | vmcs_write32(GUEST_LDTR_AR_BYTES, 0x00082); |
| 2760 | |
| 2761 | vmcs_write32(GUEST_SYSENTER_CS, 0); |
| 2762 | vmcs_writel(GUEST_SYSENTER_ESP, 0); |
| 2763 | vmcs_writel(GUEST_SYSENTER_EIP, 0); |
| 2764 | |
| 2765 | vmcs_writel(GUEST_RFLAGS, 0x02); |
Gleb Natapov | c5af89b | 2009-06-09 15:56:26 +0300 | [diff] [blame] | 2766 | if (kvm_vcpu_is_bsp(&vmx->vcpu)) |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 2767 | kvm_rip_write(vcpu, 0xfff0); |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2768 | else |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 2769 | kvm_rip_write(vcpu, 0); |
| 2770 | kvm_register_write(vcpu, VCPU_REGS_RSP, 0); |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2771 | |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2772 | vmcs_writel(GUEST_DR7, 0x400); |
| 2773 | |
| 2774 | vmcs_writel(GUEST_GDTR_BASE, 0); |
| 2775 | vmcs_write32(GUEST_GDTR_LIMIT, 0xffff); |
| 2776 | |
| 2777 | vmcs_writel(GUEST_IDTR_BASE, 0); |
| 2778 | vmcs_write32(GUEST_IDTR_LIMIT, 0xffff); |
| 2779 | |
Anthony Liguori | 443381a | 2010-12-06 10:53:38 -0600 | [diff] [blame] | 2780 | vmcs_write32(GUEST_ACTIVITY_STATE, GUEST_ACTIVITY_ACTIVE); |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2781 | vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, 0); |
| 2782 | vmcs_write32(GUEST_PENDING_DBG_EXCEPTIONS, 0); |
| 2783 | |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 2784 | /* Special registers */ |
| 2785 | vmcs_write64(GUEST_IA32_DEBUGCTL, 0); |
| 2786 | |
| 2787 | setup_msrs(vmx); |
| 2788 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2789 | vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0); /* 22.2.1 */ |
| 2790 | |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 2791 | if (cpu_has_vmx_tpr_shadow()) { |
| 2792 | vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, 0); |
| 2793 | if (vm_need_tpr_shadow(vmx->vcpu.kvm)) |
| 2794 | vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 2795 | page_to_phys(vmx->vcpu.arch.apic->regs_page)); |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 2796 | vmcs_write32(TPR_THRESHOLD, 0); |
| 2797 | } |
| 2798 | |
| 2799 | if (vm_need_virtualize_apic_accesses(vmx->vcpu.kvm)) |
| 2800 | vmcs_write64(APIC_ACCESS_ADDR, |
Zhang Xiantao | bfc6d22 | 2007-12-14 10:20:16 +0800 | [diff] [blame] | 2801 | page_to_phys(vmx->vcpu.kvm->arch.apic_access_page)); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2802 | |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 2803 | if (vmx->vpid != 0) |
| 2804 | vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid); |
| 2805 | |
Eduardo Habkost | fa40052 | 2009-10-24 02:49:58 -0200 | [diff] [blame] | 2806 | vmx->vcpu.arch.cr0 = X86_CR0_NW | X86_CR0_CD | X86_CR0_ET; |
Avi Kivity | 4d4ec08 | 2009-12-29 18:07:30 +0200 | [diff] [blame] | 2807 | vmx_set_cr0(&vmx->vcpu, kvm_read_cr0(vcpu)); /* enter rmode */ |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 2808 | vmx_set_cr4(&vmx->vcpu, 0); |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 2809 | vmx_set_efer(&vmx->vcpu, 0); |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 2810 | vmx_fpu_activate(&vmx->vcpu); |
| 2811 | update_exception_bitmap(&vmx->vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2812 | |
Gui Jianfeng | b9d762f | 2010-06-07 10:32:29 +0800 | [diff] [blame] | 2813 | vpid_sync_context(vmx); |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 2814 | |
Marcelo Tosatti | 3200f40 | 2008-03-29 20:17:59 -0300 | [diff] [blame] | 2815 | ret = 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2816 | |
Mohammed Gamal | a89a8fb | 2008-08-17 16:42:16 +0300 | [diff] [blame] | 2817 | /* HACK: Don't enable emulation on guest boot/reset */ |
| 2818 | vmx->emulation_required = 0; |
| 2819 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2820 | out: |
| 2821 | return ret; |
| 2822 | } |
| 2823 | |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 2824 | static void enable_irq_window(struct kvm_vcpu *vcpu) |
| 2825 | { |
| 2826 | u32 cpu_based_vm_exec_control; |
| 2827 | |
| 2828 | cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL); |
| 2829 | cpu_based_vm_exec_control |= CPU_BASED_VIRTUAL_INTR_PENDING; |
| 2830 | vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control); |
| 2831 | } |
| 2832 | |
| 2833 | static void enable_nmi_window(struct kvm_vcpu *vcpu) |
| 2834 | { |
| 2835 | u32 cpu_based_vm_exec_control; |
| 2836 | |
| 2837 | if (!cpu_has_virtual_nmis()) { |
| 2838 | enable_irq_window(vcpu); |
| 2839 | return; |
| 2840 | } |
| 2841 | |
Avi Kivity | 30bd0c4 | 2010-11-01 23:20:48 +0200 | [diff] [blame] | 2842 | if (vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & GUEST_INTR_STATE_STI) { |
| 2843 | enable_irq_window(vcpu); |
| 2844 | return; |
| 2845 | } |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 2846 | cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL); |
| 2847 | cpu_based_vm_exec_control |= CPU_BASED_VIRTUAL_NMI_PENDING; |
| 2848 | vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control); |
| 2849 | } |
| 2850 | |
Gleb Natapov | 66fd3f7 | 2009-05-11 13:35:50 +0300 | [diff] [blame] | 2851 | static void vmx_inject_irq(struct kvm_vcpu *vcpu) |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 2852 | { |
Avi Kivity | 9c8cba3 | 2007-11-22 11:42:59 +0200 | [diff] [blame] | 2853 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Gleb Natapov | 66fd3f7 | 2009-05-11 13:35:50 +0300 | [diff] [blame] | 2854 | uint32_t intr; |
| 2855 | int irq = vcpu->arch.interrupt.nr; |
Avi Kivity | 9c8cba3 | 2007-11-22 11:42:59 +0200 | [diff] [blame] | 2856 | |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 2857 | trace_kvm_inj_virq(irq); |
Feng (Eric) Liu | 2714d1d | 2008-04-10 15:31:10 -0400 | [diff] [blame] | 2858 | |
Avi Kivity | fa89a81 | 2008-09-01 15:57:51 +0300 | [diff] [blame] | 2859 | ++vcpu->stat.irq_injections; |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 2860 | if (vmx->rmode.vm86_active) { |
Mohammed Gamal | a92601b | 2010-09-19 14:34:07 +0200 | [diff] [blame] | 2861 | if (kvm_inject_realmode_interrupt(vcpu, irq) != EMULATE_DONE) |
| 2862 | kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu); |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 2863 | return; |
| 2864 | } |
Gleb Natapov | 66fd3f7 | 2009-05-11 13:35:50 +0300 | [diff] [blame] | 2865 | intr = irq | INTR_INFO_VALID_MASK; |
| 2866 | if (vcpu->arch.interrupt.soft) { |
| 2867 | intr |= INTR_TYPE_SOFT_INTR; |
| 2868 | vmcs_write32(VM_ENTRY_INSTRUCTION_LEN, |
| 2869 | vmx->vcpu.arch.event_exit_inst_len); |
| 2870 | } else |
| 2871 | intr |= INTR_TYPE_EXT_INTR; |
| 2872 | vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr); |
Anthony Liguori | 443381a | 2010-12-06 10:53:38 -0600 | [diff] [blame] | 2873 | vmx_clear_hlt(vcpu); |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 2874 | } |
| 2875 | |
Sheng Yang | f08864b | 2008-05-15 18:23:25 +0800 | [diff] [blame] | 2876 | static void vmx_inject_nmi(struct kvm_vcpu *vcpu) |
| 2877 | { |
Jan Kiszka | 66a5a34 | 2008-09-26 09:30:51 +0200 | [diff] [blame] | 2878 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
| 2879 | |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 2880 | if (!cpu_has_virtual_nmis()) { |
| 2881 | /* |
| 2882 | * Tracking the NMI-blocked state in software is built upon |
| 2883 | * finding the next open IRQ window. This, in turn, depends on |
| 2884 | * well-behaving guests: They have to keep IRQs disabled at |
| 2885 | * least as long as the NMI handler runs. Otherwise we may |
| 2886 | * cause NMI nesting, maybe breaking the guest. But as this is |
| 2887 | * highly unlikely, we can live with the residual risk. |
| 2888 | */ |
| 2889 | vmx->soft_vnmi_blocked = 1; |
| 2890 | vmx->vnmi_blocked_time = 0; |
| 2891 | } |
| 2892 | |
Jan Kiszka | 487b391 | 2008-09-26 09:30:56 +0200 | [diff] [blame] | 2893 | ++vcpu->stat.nmi_injections; |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 2894 | if (vmx->rmode.vm86_active) { |
Mohammed Gamal | a92601b | 2010-09-19 14:34:07 +0200 | [diff] [blame] | 2895 | if (kvm_inject_realmode_interrupt(vcpu, NMI_VECTOR) != EMULATE_DONE) |
| 2896 | kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu); |
Jan Kiszka | 66a5a34 | 2008-09-26 09:30:51 +0200 | [diff] [blame] | 2897 | return; |
| 2898 | } |
Sheng Yang | f08864b | 2008-05-15 18:23:25 +0800 | [diff] [blame] | 2899 | vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, |
| 2900 | INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK | NMI_VECTOR); |
Anthony Liguori | 443381a | 2010-12-06 10:53:38 -0600 | [diff] [blame] | 2901 | vmx_clear_hlt(vcpu); |
Sheng Yang | f08864b | 2008-05-15 18:23:25 +0800 | [diff] [blame] | 2902 | } |
| 2903 | |
Gleb Natapov | c4282df | 2009-04-21 17:45:07 +0300 | [diff] [blame] | 2904 | static int vmx_nmi_allowed(struct kvm_vcpu *vcpu) |
Jan Kiszka | 33f089c | 2008-09-26 09:30:49 +0200 | [diff] [blame] | 2905 | { |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 2906 | if (!cpu_has_virtual_nmis() && to_vmx(vcpu)->soft_vnmi_blocked) |
Gleb Natapov | c4282df | 2009-04-21 17:45:07 +0300 | [diff] [blame] | 2907 | return 0; |
Jan Kiszka | 33f089c | 2008-09-26 09:30:49 +0200 | [diff] [blame] | 2908 | |
Gleb Natapov | c4282df | 2009-04-21 17:45:07 +0300 | [diff] [blame] | 2909 | return !(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & |
Avi Kivity | 30bd0c4 | 2010-11-01 23:20:48 +0200 | [diff] [blame] | 2910 | (GUEST_INTR_STATE_MOV_SS | GUEST_INTR_STATE_STI |
| 2911 | | GUEST_INTR_STATE_NMI)); |
Jan Kiszka | 33f089c | 2008-09-26 09:30:49 +0200 | [diff] [blame] | 2912 | } |
| 2913 | |
Jan Kiszka | 3cfc309 | 2009-11-12 01:04:25 +0100 | [diff] [blame] | 2914 | static bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu) |
| 2915 | { |
| 2916 | if (!cpu_has_virtual_nmis()) |
| 2917 | return to_vmx(vcpu)->soft_vnmi_blocked; |
Avi Kivity | c332c83 | 2010-05-04 12:24:12 +0300 | [diff] [blame] | 2918 | return vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & GUEST_INTR_STATE_NMI; |
Jan Kiszka | 3cfc309 | 2009-11-12 01:04:25 +0100 | [diff] [blame] | 2919 | } |
| 2920 | |
| 2921 | static void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked) |
| 2922 | { |
| 2923 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
| 2924 | |
| 2925 | if (!cpu_has_virtual_nmis()) { |
| 2926 | if (vmx->soft_vnmi_blocked != masked) { |
| 2927 | vmx->soft_vnmi_blocked = masked; |
| 2928 | vmx->vnmi_blocked_time = 0; |
| 2929 | } |
| 2930 | } else { |
| 2931 | if (masked) |
| 2932 | vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO, |
| 2933 | GUEST_INTR_STATE_NMI); |
| 2934 | else |
| 2935 | vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO, |
| 2936 | GUEST_INTR_STATE_NMI); |
| 2937 | } |
| 2938 | } |
| 2939 | |
Gleb Natapov | 7864612 | 2009-03-23 12:12:11 +0200 | [diff] [blame] | 2940 | static int vmx_interrupt_allowed(struct kvm_vcpu *vcpu) |
| 2941 | { |
Gleb Natapov | c4282df | 2009-04-21 17:45:07 +0300 | [diff] [blame] | 2942 | return (vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) && |
| 2943 | !(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & |
| 2944 | (GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS)); |
Gleb Natapov | 7864612 | 2009-03-23 12:12:11 +0200 | [diff] [blame] | 2945 | } |
| 2946 | |
Izik Eidus | cbc9402 | 2007-10-25 00:29:55 +0200 | [diff] [blame] | 2947 | static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr) |
| 2948 | { |
| 2949 | int ret; |
| 2950 | struct kvm_userspace_memory_region tss_mem = { |
Sheng Yang | 6fe6397 | 2008-10-16 17:30:58 +0800 | [diff] [blame] | 2951 | .slot = TSS_PRIVATE_MEMSLOT, |
Izik Eidus | cbc9402 | 2007-10-25 00:29:55 +0200 | [diff] [blame] | 2952 | .guest_phys_addr = addr, |
| 2953 | .memory_size = PAGE_SIZE * 3, |
| 2954 | .flags = 0, |
| 2955 | }; |
| 2956 | |
| 2957 | ret = kvm_set_memory_region(kvm, &tss_mem, 0); |
| 2958 | if (ret) |
| 2959 | return ret; |
Zhang Xiantao | bfc6d22 | 2007-12-14 10:20:16 +0800 | [diff] [blame] | 2960 | kvm->arch.tss_addr = addr; |
Izik Eidus | cbc9402 | 2007-10-25 00:29:55 +0200 | [diff] [blame] | 2961 | return 0; |
| 2962 | } |
| 2963 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2964 | static int handle_rmode_exception(struct kvm_vcpu *vcpu, |
| 2965 | int vec, u32 err_code) |
| 2966 | { |
Nitin A Kamble | b3f3770 | 2007-05-17 15:50:34 +0300 | [diff] [blame] | 2967 | /* |
| 2968 | * Instruction with address size override prefix opcode 0x67 |
| 2969 | * Cause the #SS fault with 0 error code in VM86 mode. |
| 2970 | */ |
| 2971 | if (((vec == GP_VECTOR) || (vec == SS_VECTOR)) && err_code == 0) |
Andre Przywara | 51d8b66 | 2010-12-21 11:12:02 +0100 | [diff] [blame] | 2972 | if (emulate_instruction(vcpu, 0) == EMULATE_DONE) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 2973 | return 1; |
Jan Kiszka | 77ab6db | 2008-07-14 12:28:51 +0200 | [diff] [blame] | 2974 | /* |
| 2975 | * Forward all other exceptions that are valid in real mode. |
| 2976 | * FIXME: Breaks guest debugging in real mode, needs to be fixed with |
| 2977 | * the required debugging infrastructure rework. |
| 2978 | */ |
| 2979 | switch (vec) { |
Jan Kiszka | 77ab6db | 2008-07-14 12:28:51 +0200 | [diff] [blame] | 2980 | case DB_VECTOR: |
Jan Kiszka | d0bfb94 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 2981 | if (vcpu->guest_debug & |
| 2982 | (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP)) |
| 2983 | return 0; |
| 2984 | kvm_queue_exception(vcpu, vec); |
| 2985 | return 1; |
Jan Kiszka | 77ab6db | 2008-07-14 12:28:51 +0200 | [diff] [blame] | 2986 | case BP_VECTOR: |
Jan Kiszka | c573cd2 | 2010-02-23 17:47:53 +0100 | [diff] [blame] | 2987 | /* |
| 2988 | * Update instruction length as we may reinject the exception |
| 2989 | * from user space while in guest debugging mode. |
| 2990 | */ |
| 2991 | to_vmx(vcpu)->vcpu.arch.event_exit_inst_len = |
| 2992 | vmcs_read32(VM_EXIT_INSTRUCTION_LEN); |
Jan Kiszka | d0bfb94 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 2993 | if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP) |
| 2994 | return 0; |
| 2995 | /* fall through */ |
| 2996 | case DE_VECTOR: |
Jan Kiszka | 77ab6db | 2008-07-14 12:28:51 +0200 | [diff] [blame] | 2997 | case OF_VECTOR: |
| 2998 | case BR_VECTOR: |
| 2999 | case UD_VECTOR: |
| 3000 | case DF_VECTOR: |
| 3001 | case SS_VECTOR: |
| 3002 | case GP_VECTOR: |
| 3003 | case MF_VECTOR: |
| 3004 | kvm_queue_exception(vcpu, vec); |
| 3005 | return 1; |
| 3006 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3007 | return 0; |
| 3008 | } |
| 3009 | |
Andi Kleen | a0861c0 | 2009-06-08 17:37:09 +0800 | [diff] [blame] | 3010 | /* |
| 3011 | * Trigger machine check on the host. We assume all the MSRs are already set up |
| 3012 | * by the CPU and that we still run on the same CPU as the MCE occurred on. |
| 3013 | * We pass a fake environment to the machine check handler because we want |
| 3014 | * the guest to be always treated like user space, no matter what context |
| 3015 | * it used internally. |
| 3016 | */ |
| 3017 | static void kvm_machine_check(void) |
| 3018 | { |
| 3019 | #if defined(CONFIG_X86_MCE) && defined(CONFIG_X86_64) |
| 3020 | struct pt_regs regs = { |
| 3021 | .cs = 3, /* Fake ring 3 no matter what the guest ran on */ |
| 3022 | .flags = X86_EFLAGS_IF, |
| 3023 | }; |
| 3024 | |
| 3025 | do_machine_check(®s, 0); |
| 3026 | #endif |
| 3027 | } |
| 3028 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3029 | static int handle_machine_check(struct kvm_vcpu *vcpu) |
Andi Kleen | a0861c0 | 2009-06-08 17:37:09 +0800 | [diff] [blame] | 3030 | { |
| 3031 | /* already handled by vcpu_run */ |
| 3032 | return 1; |
| 3033 | } |
| 3034 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3035 | static int handle_exception(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3036 | { |
Avi Kivity | 1155f76 | 2007-11-22 11:30:47 +0200 | [diff] [blame] | 3037 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3038 | struct kvm_run *kvm_run = vcpu->run; |
Jan Kiszka | d0bfb94 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3039 | u32 intr_info, ex_no, error_code; |
Jan Kiszka | 42dbaa5 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3040 | unsigned long cr2, rip, dr6; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3041 | u32 vect_info; |
| 3042 | enum emulation_result er; |
| 3043 | |
Avi Kivity | 1155f76 | 2007-11-22 11:30:47 +0200 | [diff] [blame] | 3044 | vect_info = vmx->idt_vectoring_info; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3045 | intr_info = vmcs_read32(VM_EXIT_INTR_INFO); |
| 3046 | |
Andi Kleen | a0861c0 | 2009-06-08 17:37:09 +0800 | [diff] [blame] | 3047 | if (is_machine_check(intr_info)) |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3048 | return handle_machine_check(vcpu); |
Andi Kleen | a0861c0 | 2009-06-08 17:37:09 +0800 | [diff] [blame] | 3049 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3050 | if ((vect_info & VECTORING_INFO_VALID_MASK) && |
Avi Kivity | 65ac726 | 2009-11-04 11:59:01 +0200 | [diff] [blame] | 3051 | !is_page_fault(intr_info)) { |
| 3052 | vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR; |
| 3053 | vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_SIMUL_EX; |
| 3054 | vcpu->run->internal.ndata = 2; |
| 3055 | vcpu->run->internal.data[0] = vect_info; |
| 3056 | vcpu->run->internal.data[1] = intr_info; |
| 3057 | return 0; |
| 3058 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3059 | |
Jan Kiszka | e4a4188 | 2008-09-26 09:30:46 +0200 | [diff] [blame] | 3060 | if ((intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR) |
Avi Kivity | 1b6269d | 2007-10-09 12:12:19 +0200 | [diff] [blame] | 3061 | return 1; /* already handled by vmx_vcpu_run() */ |
Anthony Liguori | 2ab455c | 2007-04-27 09:29:49 +0300 | [diff] [blame] | 3062 | |
| 3063 | if (is_no_device(intr_info)) { |
Avi Kivity | 5fd86fc | 2007-05-02 20:40:00 +0300 | [diff] [blame] | 3064 | vmx_fpu_activate(vcpu); |
Anthony Liguori | 2ab455c | 2007-04-27 09:29:49 +0300 | [diff] [blame] | 3065 | return 1; |
| 3066 | } |
| 3067 | |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 3068 | if (is_invalid_opcode(intr_info)) { |
Andre Przywara | 51d8b66 | 2010-12-21 11:12:02 +0100 | [diff] [blame] | 3069 | er = emulate_instruction(vcpu, EMULTYPE_TRAP_UD); |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 3070 | if (er != EMULATE_DONE) |
Avi Kivity | 7ee5d940 | 2007-11-25 15:22:50 +0200 | [diff] [blame] | 3071 | kvm_queue_exception(vcpu, UD_VECTOR); |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 3072 | return 1; |
| 3073 | } |
| 3074 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3075 | error_code = 0; |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 3076 | rip = kvm_rip_read(vcpu); |
Ryan Harper | 2e11384 | 2008-02-11 10:26:38 -0600 | [diff] [blame] | 3077 | if (intr_info & INTR_INFO_DELIVER_CODE_MASK) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3078 | error_code = vmcs_read32(VM_EXIT_INTR_ERROR_CODE); |
| 3079 | if (is_page_fault(intr_info)) { |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3080 | /* EPT won't cause page fault directly */ |
Avi Kivity | 089d034 | 2009-03-23 18:26:32 +0200 | [diff] [blame] | 3081 | if (enable_ept) |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3082 | BUG(); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3083 | cr2 = vmcs_readl(EXIT_QUALIFICATION); |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 3084 | trace_kvm_page_fault(cr2, error_code); |
| 3085 | |
Gleb Natapov | 3298b75 | 2009-05-11 13:35:46 +0300 | [diff] [blame] | 3086 | if (kvm_event_needs_reinjection(vcpu)) |
Avi Kivity | 577bdc4 | 2008-07-19 08:57:05 +0300 | [diff] [blame] | 3087 | kvm_mmu_unprotect_page_virt(vcpu, cr2); |
Andre Przywara | dc25e89 | 2010-12-21 11:12:07 +0100 | [diff] [blame] | 3088 | return kvm_mmu_page_fault(vcpu, cr2, error_code, NULL, 0); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3089 | } |
| 3090 | |
Avi Kivity | 7ffd92c | 2009-06-09 14:10:45 +0300 | [diff] [blame] | 3091 | if (vmx->rmode.vm86_active && |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3092 | handle_rmode_exception(vcpu, intr_info & INTR_INFO_VECTOR_MASK, |
Avi Kivity | 72d6e5a | 2007-06-05 16:15:51 +0300 | [diff] [blame] | 3093 | error_code)) { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 3094 | if (vcpu->arch.halt_request) { |
| 3095 | vcpu->arch.halt_request = 0; |
Avi Kivity | 72d6e5a | 2007-06-05 16:15:51 +0300 | [diff] [blame] | 3096 | return kvm_emulate_halt(vcpu); |
| 3097 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3098 | return 1; |
Avi Kivity | 72d6e5a | 2007-06-05 16:15:51 +0300 | [diff] [blame] | 3099 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3100 | |
Jan Kiszka | d0bfb94 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3101 | ex_no = intr_info & INTR_INFO_VECTOR_MASK; |
Jan Kiszka | 42dbaa5 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3102 | switch (ex_no) { |
| 3103 | case DB_VECTOR: |
| 3104 | dr6 = vmcs_readl(EXIT_QUALIFICATION); |
| 3105 | if (!(vcpu->guest_debug & |
| 3106 | (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))) { |
| 3107 | vcpu->arch.dr6 = dr6 | DR6_FIXED_1; |
| 3108 | kvm_queue_exception(vcpu, DB_VECTOR); |
| 3109 | return 1; |
| 3110 | } |
| 3111 | kvm_run->debug.arch.dr6 = dr6 | DR6_FIXED_1; |
| 3112 | kvm_run->debug.arch.dr7 = vmcs_readl(GUEST_DR7); |
| 3113 | /* fall through */ |
| 3114 | case BP_VECTOR: |
Jan Kiszka | c573cd2 | 2010-02-23 17:47:53 +0100 | [diff] [blame] | 3115 | /* |
| 3116 | * Update instruction length as we may reinject #BP from |
| 3117 | * user space while in guest debugging mode. Reading it for |
| 3118 | * #DB as well causes no harm, it is not used in that case. |
| 3119 | */ |
| 3120 | vmx->vcpu.arch.event_exit_inst_len = |
| 3121 | vmcs_read32(VM_EXIT_INSTRUCTION_LEN); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3122 | kvm_run->exit_reason = KVM_EXIT_DEBUG; |
Jan Kiszka | d0bfb94 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3123 | kvm_run->debug.arch.pc = vmcs_readl(GUEST_CS_BASE) + rip; |
| 3124 | kvm_run->debug.arch.exception = ex_no; |
Jan Kiszka | 42dbaa5 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3125 | break; |
| 3126 | default: |
Jan Kiszka | d0bfb94 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3127 | kvm_run->exit_reason = KVM_EXIT_EXCEPTION; |
| 3128 | kvm_run->ex.exception = ex_no; |
| 3129 | kvm_run->ex.error_code = error_code; |
Jan Kiszka | 42dbaa5 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3130 | break; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3131 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3132 | return 0; |
| 3133 | } |
| 3134 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3135 | static int handle_external_interrupt(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3136 | { |
Avi Kivity | 1165f5f | 2007-04-19 17:27:43 +0300 | [diff] [blame] | 3137 | ++vcpu->stat.irq_exits; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3138 | return 1; |
| 3139 | } |
| 3140 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3141 | static int handle_triple_fault(struct kvm_vcpu *vcpu) |
Avi Kivity | 988ad74 | 2007-02-12 00:54:36 -0800 | [diff] [blame] | 3142 | { |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3143 | vcpu->run->exit_reason = KVM_EXIT_SHUTDOWN; |
Avi Kivity | 988ad74 | 2007-02-12 00:54:36 -0800 | [diff] [blame] | 3144 | return 0; |
| 3145 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3146 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3147 | static int handle_io(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3148 | { |
He, Qing | bfdaab0 | 2007-09-12 14:18:28 +0800 | [diff] [blame] | 3149 | unsigned long exit_qualification; |
Jan Kiszka | 34c33d1 | 2009-02-08 13:28:15 +0100 | [diff] [blame] | 3150 | int size, in, string; |
Avi Kivity | 039576c | 2007-03-20 12:46:50 +0200 | [diff] [blame] | 3151 | unsigned port; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3152 | |
He, Qing | bfdaab0 | 2007-09-12 14:18:28 +0800 | [diff] [blame] | 3153 | exit_qualification = vmcs_readl(EXIT_QUALIFICATION); |
Avi Kivity | 039576c | 2007-03-20 12:46:50 +0200 | [diff] [blame] | 3154 | string = (exit_qualification & 16) != 0; |
Laurent Vivier | e70669a | 2007-08-05 10:36:40 +0300 | [diff] [blame] | 3155 | in = (exit_qualification & 8) != 0; |
Laurent Vivier | e70669a | 2007-08-05 10:36:40 +0300 | [diff] [blame] | 3156 | |
Gleb Natapov | cf8f70b | 2010-03-18 15:20:23 +0200 | [diff] [blame] | 3157 | ++vcpu->stat.io_exits; |
| 3158 | |
| 3159 | if (string || in) |
Andre Przywara | 51d8b66 | 2010-12-21 11:12:02 +0100 | [diff] [blame] | 3160 | return emulate_instruction(vcpu, 0) == EMULATE_DONE; |
Gleb Natapov | cf8f70b | 2010-03-18 15:20:23 +0200 | [diff] [blame] | 3161 | |
| 3162 | port = exit_qualification >> 16; |
| 3163 | size = (exit_qualification & 7) + 1; |
Guillaume Thouvenin | e93f36b | 2008-10-28 10:51:30 +0100 | [diff] [blame] | 3164 | skip_emulated_instruction(vcpu); |
Gleb Natapov | cf8f70b | 2010-03-18 15:20:23 +0200 | [diff] [blame] | 3165 | |
| 3166 | return kvm_fast_pio_out(vcpu, size, port); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3167 | } |
| 3168 | |
Ingo Molnar | 102d832 | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 3169 | static void |
| 3170 | vmx_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall) |
| 3171 | { |
| 3172 | /* |
| 3173 | * Patch in the VMCALL instruction: |
| 3174 | */ |
| 3175 | hypercall[0] = 0x0f; |
| 3176 | hypercall[1] = 0x01; |
| 3177 | hypercall[2] = 0xc1; |
Ingo Molnar | 102d832 | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 3178 | } |
| 3179 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3180 | static int handle_cr(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3181 | { |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 3182 | unsigned long exit_qualification, val; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3183 | int cr; |
| 3184 | int reg; |
Avi Kivity | 49a9b07 | 2010-06-10 17:02:14 +0300 | [diff] [blame] | 3185 | int err; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3186 | |
He, Qing | bfdaab0 | 2007-09-12 14:18:28 +0800 | [diff] [blame] | 3187 | exit_qualification = vmcs_readl(EXIT_QUALIFICATION); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3188 | cr = exit_qualification & 15; |
| 3189 | reg = (exit_qualification >> 8) & 15; |
| 3190 | switch ((exit_qualification >> 4) & 3) { |
| 3191 | case 0: /* mov to cr */ |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 3192 | val = kvm_register_read(vcpu, reg); |
| 3193 | trace_kvm_cr_write(cr, val); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3194 | switch (cr) { |
| 3195 | case 0: |
Avi Kivity | 49a9b07 | 2010-06-10 17:02:14 +0300 | [diff] [blame] | 3196 | err = kvm_set_cr0(vcpu, val); |
Andre Przywara | db8fcef | 2010-12-21 11:12:01 +0100 | [diff] [blame] | 3197 | kvm_complete_insn_gp(vcpu, err); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3198 | return 1; |
| 3199 | case 3: |
Avi Kivity | 2390218 | 2010-06-10 17:02:16 +0300 | [diff] [blame] | 3200 | err = kvm_set_cr3(vcpu, val); |
Andre Przywara | db8fcef | 2010-12-21 11:12:01 +0100 | [diff] [blame] | 3201 | kvm_complete_insn_gp(vcpu, err); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3202 | return 1; |
| 3203 | case 4: |
Avi Kivity | a83b29c | 2010-06-10 17:02:15 +0300 | [diff] [blame] | 3204 | err = kvm_set_cr4(vcpu, val); |
Andre Przywara | db8fcef | 2010-12-21 11:12:01 +0100 | [diff] [blame] | 3205 | kvm_complete_insn_gp(vcpu, err); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3206 | return 1; |
Gleb Natapov | 0a5fff19 | 2009-04-21 17:45:06 +0300 | [diff] [blame] | 3207 | case 8: { |
| 3208 | u8 cr8_prev = kvm_get_cr8(vcpu); |
| 3209 | u8 cr8 = kvm_register_read(vcpu, reg); |
Andre Przywara | eea1cff | 2010-12-21 11:12:00 +0100 | [diff] [blame] | 3210 | err = kvm_set_cr8(vcpu, cr8); |
Andre Przywara | db8fcef | 2010-12-21 11:12:01 +0100 | [diff] [blame] | 3211 | kvm_complete_insn_gp(vcpu, err); |
Gleb Natapov | 0a5fff19 | 2009-04-21 17:45:06 +0300 | [diff] [blame] | 3212 | if (irqchip_in_kernel(vcpu->kvm)) |
| 3213 | return 1; |
| 3214 | if (cr8_prev <= cr8) |
| 3215 | return 1; |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3216 | vcpu->run->exit_reason = KVM_EXIT_SET_TPR; |
Gleb Natapov | 0a5fff19 | 2009-04-21 17:45:06 +0300 | [diff] [blame] | 3217 | return 0; |
| 3218 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3219 | }; |
| 3220 | break; |
Anthony Liguori | 25c4c27 | 2007-04-27 09:29:21 +0300 | [diff] [blame] | 3221 | case 2: /* clts */ |
Avi Kivity | edcafe3 | 2009-12-30 18:07:40 +0200 | [diff] [blame] | 3222 | vmx_set_cr0(vcpu, kvm_read_cr0_bits(vcpu, ~X86_CR0_TS)); |
Avi Kivity | 4d4ec08 | 2009-12-29 18:07:30 +0200 | [diff] [blame] | 3223 | trace_kvm_cr_write(0, kvm_read_cr0(vcpu)); |
Anthony Liguori | 25c4c27 | 2007-04-27 09:29:21 +0300 | [diff] [blame] | 3224 | skip_emulated_instruction(vcpu); |
Avi Kivity | 6b52d18 | 2010-01-21 15:31:47 +0200 | [diff] [blame] | 3225 | vmx_fpu_activate(vcpu); |
Anthony Liguori | 25c4c27 | 2007-04-27 09:29:21 +0300 | [diff] [blame] | 3226 | return 1; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3227 | case 1: /*mov from cr*/ |
| 3228 | switch (cr) { |
| 3229 | case 3: |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 3230 | kvm_register_write(vcpu, reg, vcpu->arch.cr3); |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 3231 | trace_kvm_cr_read(cr, vcpu->arch.cr3); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3232 | skip_emulated_instruction(vcpu); |
| 3233 | return 1; |
| 3234 | case 8: |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 3235 | val = kvm_get_cr8(vcpu); |
| 3236 | kvm_register_write(vcpu, reg, val); |
| 3237 | trace_kvm_cr_read(cr, val); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3238 | skip_emulated_instruction(vcpu); |
| 3239 | return 1; |
| 3240 | } |
| 3241 | break; |
| 3242 | case 3: /* lmsw */ |
Avi Kivity | a1f83a7 | 2009-12-29 17:33:58 +0200 | [diff] [blame] | 3243 | val = (exit_qualification >> LMSW_SOURCE_DATA_SHIFT) & 0x0f; |
Avi Kivity | 4d4ec08 | 2009-12-29 18:07:30 +0200 | [diff] [blame] | 3244 | trace_kvm_cr_write(0, (kvm_read_cr0(vcpu) & ~0xful) | val); |
Avi Kivity | a1f83a7 | 2009-12-29 17:33:58 +0200 | [diff] [blame] | 3245 | kvm_lmsw(vcpu, val); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3246 | |
| 3247 | skip_emulated_instruction(vcpu); |
| 3248 | return 1; |
| 3249 | default: |
| 3250 | break; |
| 3251 | } |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3252 | vcpu->run->exit_reason = 0; |
Rusty Russell | f024247 | 2007-08-01 10:48:02 +1000 | [diff] [blame] | 3253 | pr_unimpl(vcpu, "unhandled control register: op %d cr %d\n", |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3254 | (int)(exit_qualification >> 4) & 3, cr); |
| 3255 | return 0; |
| 3256 | } |
| 3257 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3258 | static int handle_dr(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3259 | { |
He, Qing | bfdaab0 | 2007-09-12 14:18:28 +0800 | [diff] [blame] | 3260 | unsigned long exit_qualification; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3261 | int dr, reg; |
| 3262 | |
Jan Kiszka | f248341 | 2010-01-20 18:20:20 +0100 | [diff] [blame] | 3263 | /* Do not handle if the CPL > 0, will trigger GP on re-entry */ |
Avi Kivity | 0a79b00 | 2009-09-01 12:03:25 +0300 | [diff] [blame] | 3264 | if (!kvm_require_cpl(vcpu, 0)) |
| 3265 | return 1; |
Jan Kiszka | 42dbaa5 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3266 | dr = vmcs_readl(GUEST_DR7); |
| 3267 | if (dr & DR7_GD) { |
| 3268 | /* |
| 3269 | * As the vm-exit takes precedence over the debug trap, we |
| 3270 | * need to emulate the latter, either for the host or the |
| 3271 | * guest debugging itself. |
| 3272 | */ |
| 3273 | if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) { |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3274 | vcpu->run->debug.arch.dr6 = vcpu->arch.dr6; |
| 3275 | vcpu->run->debug.arch.dr7 = dr; |
| 3276 | vcpu->run->debug.arch.pc = |
Jan Kiszka | 42dbaa5 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3277 | vmcs_readl(GUEST_CS_BASE) + |
| 3278 | vmcs_readl(GUEST_RIP); |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3279 | vcpu->run->debug.arch.exception = DB_VECTOR; |
| 3280 | vcpu->run->exit_reason = KVM_EXIT_DEBUG; |
Jan Kiszka | 42dbaa5 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3281 | return 0; |
| 3282 | } else { |
| 3283 | vcpu->arch.dr7 &= ~DR7_GD; |
| 3284 | vcpu->arch.dr6 |= DR6_BD; |
| 3285 | vmcs_writel(GUEST_DR7, vcpu->arch.dr7); |
| 3286 | kvm_queue_exception(vcpu, DB_VECTOR); |
| 3287 | return 1; |
| 3288 | } |
| 3289 | } |
| 3290 | |
He, Qing | bfdaab0 | 2007-09-12 14:18:28 +0800 | [diff] [blame] | 3291 | exit_qualification = vmcs_readl(EXIT_QUALIFICATION); |
Jan Kiszka | 42dbaa5 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3292 | dr = exit_qualification & DEBUG_REG_ACCESS_NUM; |
| 3293 | reg = DEBUG_REG_ACCESS_REG(exit_qualification); |
| 3294 | if (exit_qualification & TYPE_MOV_FROM_DR) { |
Gleb Natapov | 020df07 | 2010-04-13 10:05:23 +0300 | [diff] [blame] | 3295 | unsigned long val; |
| 3296 | if (!kvm_get_dr(vcpu, dr, &val)) |
| 3297 | kvm_register_write(vcpu, reg, val); |
| 3298 | } else |
| 3299 | kvm_set_dr(vcpu, dr, vcpu->arch.regs[reg]); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3300 | skip_emulated_instruction(vcpu); |
| 3301 | return 1; |
| 3302 | } |
| 3303 | |
Gleb Natapov | 020df07 | 2010-04-13 10:05:23 +0300 | [diff] [blame] | 3304 | static void vmx_set_dr7(struct kvm_vcpu *vcpu, unsigned long val) |
| 3305 | { |
| 3306 | vmcs_writel(GUEST_DR7, val); |
| 3307 | } |
| 3308 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3309 | static int handle_cpuid(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3310 | { |
Avi Kivity | 06465c5 | 2007-02-28 20:46:53 +0200 | [diff] [blame] | 3311 | kvm_emulate_cpuid(vcpu); |
| 3312 | return 1; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3313 | } |
| 3314 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3315 | static int handle_rdmsr(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3316 | { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 3317 | u32 ecx = vcpu->arch.regs[VCPU_REGS_RCX]; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3318 | u64 data; |
| 3319 | |
| 3320 | if (vmx_get_msr(vcpu, ecx, &data)) { |
Avi Kivity | 5920027 | 2010-01-25 19:47:02 +0200 | [diff] [blame] | 3321 | trace_kvm_msr_read_ex(ecx); |
Avi Kivity | c1a5d4f | 2007-11-25 14:12:03 +0200 | [diff] [blame] | 3322 | kvm_inject_gp(vcpu, 0); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3323 | return 1; |
| 3324 | } |
| 3325 | |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 3326 | trace_kvm_msr_read(ecx, data); |
Feng (Eric) Liu | 2714d1d | 2008-04-10 15:31:10 -0400 | [diff] [blame] | 3327 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3328 | /* FIXME: handling of bits 32:63 of rax, rdx */ |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 3329 | vcpu->arch.regs[VCPU_REGS_RAX] = data & -1u; |
| 3330 | vcpu->arch.regs[VCPU_REGS_RDX] = (data >> 32) & -1u; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3331 | skip_emulated_instruction(vcpu); |
| 3332 | return 1; |
| 3333 | } |
| 3334 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3335 | static int handle_wrmsr(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3336 | { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 3337 | u32 ecx = vcpu->arch.regs[VCPU_REGS_RCX]; |
| 3338 | u64 data = (vcpu->arch.regs[VCPU_REGS_RAX] & -1u) |
| 3339 | | ((u64)(vcpu->arch.regs[VCPU_REGS_RDX] & -1u) << 32); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3340 | |
| 3341 | if (vmx_set_msr(vcpu, ecx, data) != 0) { |
Avi Kivity | 5920027 | 2010-01-25 19:47:02 +0200 | [diff] [blame] | 3342 | trace_kvm_msr_write_ex(ecx, data); |
Avi Kivity | c1a5d4f | 2007-11-25 14:12:03 +0200 | [diff] [blame] | 3343 | kvm_inject_gp(vcpu, 0); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3344 | return 1; |
| 3345 | } |
| 3346 | |
Avi Kivity | 5920027 | 2010-01-25 19:47:02 +0200 | [diff] [blame] | 3347 | trace_kvm_msr_write(ecx, data); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3348 | skip_emulated_instruction(vcpu); |
| 3349 | return 1; |
| 3350 | } |
| 3351 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3352 | static int handle_tpr_below_threshold(struct kvm_vcpu *vcpu) |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 3353 | { |
Avi Kivity | 3842d13 | 2010-07-27 12:30:24 +0300 | [diff] [blame] | 3354 | kvm_make_request(KVM_REQ_EVENT, vcpu); |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 3355 | return 1; |
| 3356 | } |
| 3357 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3358 | static int handle_interrupt_window(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3359 | { |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 3360 | u32 cpu_based_vm_exec_control; |
| 3361 | |
| 3362 | /* clear pending irq */ |
| 3363 | cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL); |
| 3364 | cpu_based_vm_exec_control &= ~CPU_BASED_VIRTUAL_INTR_PENDING; |
| 3365 | vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control); |
Feng (Eric) Liu | 2714d1d | 2008-04-10 15:31:10 -0400 | [diff] [blame] | 3366 | |
Avi Kivity | 3842d13 | 2010-07-27 12:30:24 +0300 | [diff] [blame] | 3367 | kvm_make_request(KVM_REQ_EVENT, vcpu); |
| 3368 | |
Jan Kiszka | a26bf12 | 2008-09-26 09:30:45 +0200 | [diff] [blame] | 3369 | ++vcpu->stat.irq_window_exits; |
Feng (Eric) Liu | 2714d1d | 2008-04-10 15:31:10 -0400 | [diff] [blame] | 3370 | |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 3371 | /* |
| 3372 | * If the user space waits to inject interrupts, exit as soon as |
| 3373 | * possible |
| 3374 | */ |
Gleb Natapov | 8061823 | 2009-04-21 17:44:56 +0300 | [diff] [blame] | 3375 | if (!irqchip_in_kernel(vcpu->kvm) && |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3376 | vcpu->run->request_interrupt_window && |
Gleb Natapov | 8061823 | 2009-04-21 17:44:56 +0300 | [diff] [blame] | 3377 | !kvm_cpu_has_interrupt(vcpu)) { |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3378 | vcpu->run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN; |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 3379 | return 0; |
| 3380 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3381 | return 1; |
| 3382 | } |
| 3383 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3384 | static int handle_halt(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3385 | { |
| 3386 | skip_emulated_instruction(vcpu); |
Avi Kivity | d3bef15 | 2007-06-05 15:53:05 +0300 | [diff] [blame] | 3387 | return kvm_emulate_halt(vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3388 | } |
| 3389 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3390 | static int handle_vmcall(struct kvm_vcpu *vcpu) |
Ingo Molnar | c21415e | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 3391 | { |
Dor Laor | 510043d | 2007-02-19 18:25:43 +0200 | [diff] [blame] | 3392 | skip_emulated_instruction(vcpu); |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 3393 | kvm_emulate_hypercall(vcpu); |
| 3394 | return 1; |
Ingo Molnar | c21415e | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 3395 | } |
| 3396 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3397 | static int handle_vmx_insn(struct kvm_vcpu *vcpu) |
Avi Kivity | e3c7cb6 | 2009-06-16 14:19:52 +0300 | [diff] [blame] | 3398 | { |
| 3399 | kvm_queue_exception(vcpu, UD_VECTOR); |
| 3400 | return 1; |
| 3401 | } |
| 3402 | |
Gleb Natapov | ec25d5e | 2010-11-01 15:35:01 +0200 | [diff] [blame] | 3403 | static int handle_invd(struct kvm_vcpu *vcpu) |
| 3404 | { |
Andre Przywara | 51d8b66 | 2010-12-21 11:12:02 +0100 | [diff] [blame] | 3405 | return emulate_instruction(vcpu, 0) == EMULATE_DONE; |
Gleb Natapov | ec25d5e | 2010-11-01 15:35:01 +0200 | [diff] [blame] | 3406 | } |
| 3407 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3408 | static int handle_invlpg(struct kvm_vcpu *vcpu) |
Marcelo Tosatti | a705289 | 2008-09-23 13:18:35 -0300 | [diff] [blame] | 3409 | { |
Sheng Yang | f9c617f | 2009-03-25 10:08:52 +0800 | [diff] [blame] | 3410 | unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION); |
Marcelo Tosatti | a705289 | 2008-09-23 13:18:35 -0300 | [diff] [blame] | 3411 | |
| 3412 | kvm_mmu_invlpg(vcpu, exit_qualification); |
| 3413 | skip_emulated_instruction(vcpu); |
| 3414 | return 1; |
| 3415 | } |
| 3416 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3417 | static int handle_wbinvd(struct kvm_vcpu *vcpu) |
Eddie Dong | e5edaa0 | 2007-11-11 12:28:35 +0200 | [diff] [blame] | 3418 | { |
| 3419 | skip_emulated_instruction(vcpu); |
Sheng Yang | f5f48ee | 2010-06-30 12:25:15 +0800 | [diff] [blame] | 3420 | kvm_emulate_wbinvd(vcpu); |
Eddie Dong | e5edaa0 | 2007-11-11 12:28:35 +0200 | [diff] [blame] | 3421 | return 1; |
| 3422 | } |
| 3423 | |
Dexuan Cui | 2acf923 | 2010-06-10 11:27:12 +0800 | [diff] [blame] | 3424 | static int handle_xsetbv(struct kvm_vcpu *vcpu) |
| 3425 | { |
| 3426 | u64 new_bv = kvm_read_edx_eax(vcpu); |
| 3427 | u32 index = kvm_register_read(vcpu, VCPU_REGS_RCX); |
| 3428 | |
| 3429 | if (kvm_set_xcr(vcpu, index, new_bv) == 0) |
| 3430 | skip_emulated_instruction(vcpu); |
| 3431 | return 1; |
| 3432 | } |
| 3433 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3434 | static int handle_apic_access(struct kvm_vcpu *vcpu) |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 3435 | { |
Andre Przywara | 51d8b66 | 2010-12-21 11:12:02 +0100 | [diff] [blame] | 3436 | return emulate_instruction(vcpu, 0) == EMULATE_DONE; |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 3437 | } |
| 3438 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3439 | static int handle_task_switch(struct kvm_vcpu *vcpu) |
Izik Eidus | 37817f2 | 2008-03-24 23:14:53 +0200 | [diff] [blame] | 3440 | { |
Jan Kiszka | 60637aa | 2008-09-26 09:30:47 +0200 | [diff] [blame] | 3441 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Izik Eidus | 37817f2 | 2008-03-24 23:14:53 +0200 | [diff] [blame] | 3442 | unsigned long exit_qualification; |
Jan Kiszka | e269fb2 | 2010-04-14 15:51:09 +0200 | [diff] [blame] | 3443 | bool has_error_code = false; |
| 3444 | u32 error_code = 0; |
Izik Eidus | 37817f2 | 2008-03-24 23:14:53 +0200 | [diff] [blame] | 3445 | u16 tss_selector; |
Gleb Natapov | 64a7ec0 | 2009-03-30 16:03:29 +0300 | [diff] [blame] | 3446 | int reason, type, idt_v; |
| 3447 | |
| 3448 | idt_v = (vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK); |
| 3449 | type = (vmx->idt_vectoring_info & VECTORING_INFO_TYPE_MASK); |
Izik Eidus | 37817f2 | 2008-03-24 23:14:53 +0200 | [diff] [blame] | 3450 | |
| 3451 | exit_qualification = vmcs_readl(EXIT_QUALIFICATION); |
| 3452 | |
| 3453 | reason = (u32)exit_qualification >> 30; |
Gleb Natapov | 64a7ec0 | 2009-03-30 16:03:29 +0300 | [diff] [blame] | 3454 | if (reason == TASK_SWITCH_GATE && idt_v) { |
| 3455 | switch (type) { |
| 3456 | case INTR_TYPE_NMI_INTR: |
| 3457 | vcpu->arch.nmi_injected = false; |
| 3458 | if (cpu_has_virtual_nmis()) |
| 3459 | vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO, |
| 3460 | GUEST_INTR_STATE_NMI); |
| 3461 | break; |
| 3462 | case INTR_TYPE_EXT_INTR: |
Gleb Natapov | 66fd3f7 | 2009-05-11 13:35:50 +0300 | [diff] [blame] | 3463 | case INTR_TYPE_SOFT_INTR: |
Gleb Natapov | 64a7ec0 | 2009-03-30 16:03:29 +0300 | [diff] [blame] | 3464 | kvm_clear_interrupt_queue(vcpu); |
| 3465 | break; |
| 3466 | case INTR_TYPE_HARD_EXCEPTION: |
Jan Kiszka | e269fb2 | 2010-04-14 15:51:09 +0200 | [diff] [blame] | 3467 | if (vmx->idt_vectoring_info & |
| 3468 | VECTORING_INFO_DELIVER_CODE_MASK) { |
| 3469 | has_error_code = true; |
| 3470 | error_code = |
| 3471 | vmcs_read32(IDT_VECTORING_ERROR_CODE); |
| 3472 | } |
| 3473 | /* fall through */ |
Gleb Natapov | 64a7ec0 | 2009-03-30 16:03:29 +0300 | [diff] [blame] | 3474 | case INTR_TYPE_SOFT_EXCEPTION: |
| 3475 | kvm_clear_exception_queue(vcpu); |
| 3476 | break; |
| 3477 | default: |
| 3478 | break; |
| 3479 | } |
Jan Kiszka | 60637aa | 2008-09-26 09:30:47 +0200 | [diff] [blame] | 3480 | } |
Izik Eidus | 37817f2 | 2008-03-24 23:14:53 +0200 | [diff] [blame] | 3481 | tss_selector = exit_qualification; |
| 3482 | |
Gleb Natapov | 64a7ec0 | 2009-03-30 16:03:29 +0300 | [diff] [blame] | 3483 | if (!idt_v || (type != INTR_TYPE_HARD_EXCEPTION && |
| 3484 | type != INTR_TYPE_EXT_INTR && |
| 3485 | type != INTR_TYPE_NMI_INTR)) |
| 3486 | skip_emulated_instruction(vcpu); |
| 3487 | |
Gleb Natapov | acb5451 | 2010-04-15 21:03:50 +0300 | [diff] [blame] | 3488 | if (kvm_task_switch(vcpu, tss_selector, reason, |
| 3489 | has_error_code, error_code) == EMULATE_FAIL) { |
| 3490 | vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR; |
| 3491 | vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION; |
| 3492 | vcpu->run->internal.ndata = 0; |
Jan Kiszka | 42dbaa5 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3493 | return 0; |
Gleb Natapov | acb5451 | 2010-04-15 21:03:50 +0300 | [diff] [blame] | 3494 | } |
Jan Kiszka | 42dbaa5 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 3495 | |
| 3496 | /* clear all local breakpoint enable flags */ |
| 3497 | vmcs_writel(GUEST_DR7, vmcs_readl(GUEST_DR7) & ~55); |
| 3498 | |
| 3499 | /* |
| 3500 | * TODO: What about debug traps on tss switch? |
| 3501 | * Are we supposed to inject them and update dr6? |
| 3502 | */ |
| 3503 | |
| 3504 | return 1; |
Izik Eidus | 37817f2 | 2008-03-24 23:14:53 +0200 | [diff] [blame] | 3505 | } |
| 3506 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3507 | static int handle_ept_violation(struct kvm_vcpu *vcpu) |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3508 | { |
Sheng Yang | f9c617f | 2009-03-25 10:08:52 +0800 | [diff] [blame] | 3509 | unsigned long exit_qualification; |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3510 | gpa_t gpa; |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3511 | int gla_validity; |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3512 | |
Sheng Yang | f9c617f | 2009-03-25 10:08:52 +0800 | [diff] [blame] | 3513 | exit_qualification = vmcs_readl(EXIT_QUALIFICATION); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3514 | |
| 3515 | if (exit_qualification & (1 << 6)) { |
| 3516 | printk(KERN_ERR "EPT: GPA exceeds GAW!\n"); |
Jan Kiszka | 7f582ab | 2009-07-22 23:53:01 +0200 | [diff] [blame] | 3517 | return -EINVAL; |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3518 | } |
| 3519 | |
| 3520 | gla_validity = (exit_qualification >> 7) & 0x3; |
| 3521 | if (gla_validity != 0x3 && gla_validity != 0x1 && gla_validity != 0) { |
| 3522 | printk(KERN_ERR "EPT: Handling EPT violation failed!\n"); |
| 3523 | printk(KERN_ERR "EPT: GPA: 0x%lx, GVA: 0x%lx\n", |
| 3524 | (long unsigned int)vmcs_read64(GUEST_PHYSICAL_ADDRESS), |
Sheng Yang | f9c617f | 2009-03-25 10:08:52 +0800 | [diff] [blame] | 3525 | vmcs_readl(GUEST_LINEAR_ADDRESS)); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3526 | printk(KERN_ERR "EPT: Exit qualification is 0x%lx\n", |
| 3527 | (long unsigned int)exit_qualification); |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3528 | vcpu->run->exit_reason = KVM_EXIT_UNKNOWN; |
| 3529 | vcpu->run->hw.hardware_exit_reason = EXIT_REASON_EPT_VIOLATION; |
Avi Kivity | 596ae89 | 2009-06-03 14:12:10 +0300 | [diff] [blame] | 3530 | return 0; |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3531 | } |
| 3532 | |
| 3533 | gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 3534 | trace_kvm_page_fault(gpa, exit_qualification); |
Andre Przywara | dc25e89 | 2010-12-21 11:12:07 +0100 | [diff] [blame] | 3535 | return kvm_mmu_page_fault(vcpu, gpa, exit_qualification & 0x3, NULL, 0); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3536 | } |
| 3537 | |
Marcelo Tosatti | 68f8940 | 2009-06-11 12:07:43 -0300 | [diff] [blame] | 3538 | static u64 ept_rsvd_mask(u64 spte, int level) |
| 3539 | { |
| 3540 | int i; |
| 3541 | u64 mask = 0; |
| 3542 | |
| 3543 | for (i = 51; i > boot_cpu_data.x86_phys_bits; i--) |
| 3544 | mask |= (1ULL << i); |
| 3545 | |
| 3546 | if (level > 2) |
| 3547 | /* bits 7:3 reserved */ |
| 3548 | mask |= 0xf8; |
| 3549 | else if (level == 2) { |
| 3550 | if (spte & (1ULL << 7)) |
| 3551 | /* 2MB ref, bits 20:12 reserved */ |
| 3552 | mask |= 0x1ff000; |
| 3553 | else |
| 3554 | /* bits 6:3 reserved */ |
| 3555 | mask |= 0x78; |
| 3556 | } |
| 3557 | |
| 3558 | return mask; |
| 3559 | } |
| 3560 | |
| 3561 | static void ept_misconfig_inspect_spte(struct kvm_vcpu *vcpu, u64 spte, |
| 3562 | int level) |
| 3563 | { |
| 3564 | printk(KERN_ERR "%s: spte 0x%llx level %d\n", __func__, spte, level); |
| 3565 | |
| 3566 | /* 010b (write-only) */ |
| 3567 | WARN_ON((spte & 0x7) == 0x2); |
| 3568 | |
| 3569 | /* 110b (write/execute) */ |
| 3570 | WARN_ON((spte & 0x7) == 0x6); |
| 3571 | |
| 3572 | /* 100b (execute-only) and value not supported by logical processor */ |
| 3573 | if (!cpu_has_vmx_ept_execute_only()) |
| 3574 | WARN_ON((spte & 0x7) == 0x4); |
| 3575 | |
| 3576 | /* not 000b */ |
| 3577 | if ((spte & 0x7)) { |
| 3578 | u64 rsvd_bits = spte & ept_rsvd_mask(spte, level); |
| 3579 | |
| 3580 | if (rsvd_bits != 0) { |
| 3581 | printk(KERN_ERR "%s: rsvd_bits = 0x%llx\n", |
| 3582 | __func__, rsvd_bits); |
| 3583 | WARN_ON(1); |
| 3584 | } |
| 3585 | |
| 3586 | if (level == 1 || (level == 2 && (spte & (1ULL << 7)))) { |
| 3587 | u64 ept_mem_type = (spte & 0x38) >> 3; |
| 3588 | |
| 3589 | if (ept_mem_type == 2 || ept_mem_type == 3 || |
| 3590 | ept_mem_type == 7) { |
| 3591 | printk(KERN_ERR "%s: ept_mem_type=0x%llx\n", |
| 3592 | __func__, ept_mem_type); |
| 3593 | WARN_ON(1); |
| 3594 | } |
| 3595 | } |
| 3596 | } |
| 3597 | } |
| 3598 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3599 | static int handle_ept_misconfig(struct kvm_vcpu *vcpu) |
Marcelo Tosatti | 68f8940 | 2009-06-11 12:07:43 -0300 | [diff] [blame] | 3600 | { |
| 3601 | u64 sptes[4]; |
| 3602 | int nr_sptes, i; |
| 3603 | gpa_t gpa; |
| 3604 | |
| 3605 | gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); |
| 3606 | |
| 3607 | printk(KERN_ERR "EPT: Misconfiguration.\n"); |
| 3608 | printk(KERN_ERR "EPT: GPA: 0x%llx\n", gpa); |
| 3609 | |
| 3610 | nr_sptes = kvm_mmu_get_spte_hierarchy(vcpu, gpa, sptes); |
| 3611 | |
| 3612 | for (i = PT64_ROOT_LEVEL; i > PT64_ROOT_LEVEL - nr_sptes; --i) |
| 3613 | ept_misconfig_inspect_spte(vcpu, sptes[i-1], i); |
| 3614 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3615 | vcpu->run->exit_reason = KVM_EXIT_UNKNOWN; |
| 3616 | vcpu->run->hw.hardware_exit_reason = EXIT_REASON_EPT_MISCONFIG; |
Marcelo Tosatti | 68f8940 | 2009-06-11 12:07:43 -0300 | [diff] [blame] | 3617 | |
| 3618 | return 0; |
| 3619 | } |
| 3620 | |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3621 | static int handle_nmi_window(struct kvm_vcpu *vcpu) |
Sheng Yang | f08864b | 2008-05-15 18:23:25 +0800 | [diff] [blame] | 3622 | { |
| 3623 | u32 cpu_based_vm_exec_control; |
| 3624 | |
| 3625 | /* clear pending NMI */ |
| 3626 | cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL); |
| 3627 | cpu_based_vm_exec_control &= ~CPU_BASED_VIRTUAL_NMI_PENDING; |
| 3628 | vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control); |
| 3629 | ++vcpu->stat.nmi_window_exits; |
Avi Kivity | 3842d13 | 2010-07-27 12:30:24 +0300 | [diff] [blame] | 3630 | kvm_make_request(KVM_REQ_EVENT, vcpu); |
Sheng Yang | f08864b | 2008-05-15 18:23:25 +0800 | [diff] [blame] | 3631 | |
| 3632 | return 1; |
| 3633 | } |
| 3634 | |
Mohammed Gamal | 80ced18 | 2009-09-01 12:48:18 +0200 | [diff] [blame] | 3635 | static int handle_invalid_guest_state(struct kvm_vcpu *vcpu) |
Mohammed Gamal | ea953ef | 2008-08-17 16:47:05 +0300 | [diff] [blame] | 3636 | { |
Avi Kivity | 8b3079a | 2009-01-05 12:10:54 +0200 | [diff] [blame] | 3637 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
| 3638 | enum emulation_result err = EMULATE_DONE; |
Mohammed Gamal | 80ced18 | 2009-09-01 12:48:18 +0200 | [diff] [blame] | 3639 | int ret = 1; |
Avi Kivity | 49e9d55 | 2010-09-19 14:34:08 +0200 | [diff] [blame] | 3640 | u32 cpu_exec_ctrl; |
| 3641 | bool intr_window_requested; |
| 3642 | |
| 3643 | cpu_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL); |
| 3644 | intr_window_requested = cpu_exec_ctrl & CPU_BASED_VIRTUAL_INTR_PENDING; |
Mohammed Gamal | ea953ef | 2008-08-17 16:47:05 +0300 | [diff] [blame] | 3645 | |
| 3646 | while (!guest_state_valid(vcpu)) { |
Avi Kivity | 49e9d55 | 2010-09-19 14:34:08 +0200 | [diff] [blame] | 3647 | if (intr_window_requested |
| 3648 | && (kvm_get_rflags(&vmx->vcpu) & X86_EFLAGS_IF)) |
| 3649 | return handle_interrupt_window(&vmx->vcpu); |
| 3650 | |
Andre Przywara | 51d8b66 | 2010-12-21 11:12:02 +0100 | [diff] [blame] | 3651 | err = emulate_instruction(vcpu, 0); |
Mohammed Gamal | ea953ef | 2008-08-17 16:47:05 +0300 | [diff] [blame] | 3652 | |
Mohammed Gamal | 80ced18 | 2009-09-01 12:48:18 +0200 | [diff] [blame] | 3653 | if (err == EMULATE_DO_MMIO) { |
| 3654 | ret = 0; |
| 3655 | goto out; |
| 3656 | } |
Guillaume Thouvenin | 1d5a4d9 | 2008-10-29 09:39:42 +0100 | [diff] [blame] | 3657 | |
Gleb Natapov | 6d77dbf | 2010-05-10 11:16:56 +0300 | [diff] [blame] | 3658 | if (err != EMULATE_DONE) |
| 3659 | return 0; |
Mohammed Gamal | ea953ef | 2008-08-17 16:47:05 +0300 | [diff] [blame] | 3660 | |
| 3661 | if (signal_pending(current)) |
Mohammed Gamal | 80ced18 | 2009-09-01 12:48:18 +0200 | [diff] [blame] | 3662 | goto out; |
Mohammed Gamal | ea953ef | 2008-08-17 16:47:05 +0300 | [diff] [blame] | 3663 | if (need_resched()) |
| 3664 | schedule(); |
| 3665 | } |
| 3666 | |
Mohammed Gamal | 80ced18 | 2009-09-01 12:48:18 +0200 | [diff] [blame] | 3667 | vmx->emulation_required = 0; |
| 3668 | out: |
| 3669 | return ret; |
Mohammed Gamal | ea953ef | 2008-08-17 16:47:05 +0300 | [diff] [blame] | 3670 | } |
| 3671 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3672 | /* |
Zhai, Edwin | 4b8d54f | 2009-10-09 18:03:20 +0800 | [diff] [blame] | 3673 | * Indicate a busy-waiting vcpu in spinlock. We do not enable the PAUSE |
| 3674 | * exiting, so only get here on cpu with PAUSE-Loop-Exiting. |
| 3675 | */ |
Marcelo Tosatti | 9fb41ba | 2009-10-12 19:37:31 -0300 | [diff] [blame] | 3676 | static int handle_pause(struct kvm_vcpu *vcpu) |
Zhai, Edwin | 4b8d54f | 2009-10-09 18:03:20 +0800 | [diff] [blame] | 3677 | { |
| 3678 | skip_emulated_instruction(vcpu); |
| 3679 | kvm_vcpu_on_spin(vcpu); |
| 3680 | |
| 3681 | return 1; |
| 3682 | } |
| 3683 | |
Sheng Yang | 5970867 | 2009-12-15 13:29:54 +0800 | [diff] [blame] | 3684 | static int handle_invalid_op(struct kvm_vcpu *vcpu) |
| 3685 | { |
| 3686 | kvm_queue_exception(vcpu, UD_VECTOR); |
| 3687 | return 1; |
| 3688 | } |
| 3689 | |
Zhai, Edwin | 4b8d54f | 2009-10-09 18:03:20 +0800 | [diff] [blame] | 3690 | /* |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3691 | * The exit handlers return 1 if the exit was handled fully and guest execution |
| 3692 | * may resume. Otherwise they set the kvm_run parameter to indicate what needs |
| 3693 | * to be done to userspace and return 0. |
| 3694 | */ |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3695 | static int (*kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu) = { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3696 | [EXIT_REASON_EXCEPTION_NMI] = handle_exception, |
| 3697 | [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt, |
Avi Kivity | 988ad74 | 2007-02-12 00:54:36 -0800 | [diff] [blame] | 3698 | [EXIT_REASON_TRIPLE_FAULT] = handle_triple_fault, |
Sheng Yang | f08864b | 2008-05-15 18:23:25 +0800 | [diff] [blame] | 3699 | [EXIT_REASON_NMI_WINDOW] = handle_nmi_window, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3700 | [EXIT_REASON_IO_INSTRUCTION] = handle_io, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3701 | [EXIT_REASON_CR_ACCESS] = handle_cr, |
| 3702 | [EXIT_REASON_DR_ACCESS] = handle_dr, |
| 3703 | [EXIT_REASON_CPUID] = handle_cpuid, |
| 3704 | [EXIT_REASON_MSR_READ] = handle_rdmsr, |
| 3705 | [EXIT_REASON_MSR_WRITE] = handle_wrmsr, |
| 3706 | [EXIT_REASON_PENDING_INTERRUPT] = handle_interrupt_window, |
| 3707 | [EXIT_REASON_HLT] = handle_halt, |
Gleb Natapov | ec25d5e | 2010-11-01 15:35:01 +0200 | [diff] [blame] | 3708 | [EXIT_REASON_INVD] = handle_invd, |
Marcelo Tosatti | a705289 | 2008-09-23 13:18:35 -0300 | [diff] [blame] | 3709 | [EXIT_REASON_INVLPG] = handle_invlpg, |
Ingo Molnar | c21415e | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 3710 | [EXIT_REASON_VMCALL] = handle_vmcall, |
Avi Kivity | e3c7cb6 | 2009-06-16 14:19:52 +0300 | [diff] [blame] | 3711 | [EXIT_REASON_VMCLEAR] = handle_vmx_insn, |
| 3712 | [EXIT_REASON_VMLAUNCH] = handle_vmx_insn, |
| 3713 | [EXIT_REASON_VMPTRLD] = handle_vmx_insn, |
| 3714 | [EXIT_REASON_VMPTRST] = handle_vmx_insn, |
| 3715 | [EXIT_REASON_VMREAD] = handle_vmx_insn, |
| 3716 | [EXIT_REASON_VMRESUME] = handle_vmx_insn, |
| 3717 | [EXIT_REASON_VMWRITE] = handle_vmx_insn, |
| 3718 | [EXIT_REASON_VMOFF] = handle_vmx_insn, |
| 3719 | [EXIT_REASON_VMON] = handle_vmx_insn, |
Sheng Yang | f78e0e2 | 2007-10-29 09:40:42 +0800 | [diff] [blame] | 3720 | [EXIT_REASON_TPR_BELOW_THRESHOLD] = handle_tpr_below_threshold, |
| 3721 | [EXIT_REASON_APIC_ACCESS] = handle_apic_access, |
Eddie Dong | e5edaa0 | 2007-11-11 12:28:35 +0200 | [diff] [blame] | 3722 | [EXIT_REASON_WBINVD] = handle_wbinvd, |
Dexuan Cui | 2acf923 | 2010-06-10 11:27:12 +0800 | [diff] [blame] | 3723 | [EXIT_REASON_XSETBV] = handle_xsetbv, |
Izik Eidus | 37817f2 | 2008-03-24 23:14:53 +0200 | [diff] [blame] | 3724 | [EXIT_REASON_TASK_SWITCH] = handle_task_switch, |
Andi Kleen | a0861c0 | 2009-06-08 17:37:09 +0800 | [diff] [blame] | 3725 | [EXIT_REASON_MCE_DURING_VMENTRY] = handle_machine_check, |
Marcelo Tosatti | 68f8940 | 2009-06-11 12:07:43 -0300 | [diff] [blame] | 3726 | [EXIT_REASON_EPT_VIOLATION] = handle_ept_violation, |
| 3727 | [EXIT_REASON_EPT_MISCONFIG] = handle_ept_misconfig, |
Zhai, Edwin | 4b8d54f | 2009-10-09 18:03:20 +0800 | [diff] [blame] | 3728 | [EXIT_REASON_PAUSE_INSTRUCTION] = handle_pause, |
Sheng Yang | 5970867 | 2009-12-15 13:29:54 +0800 | [diff] [blame] | 3729 | [EXIT_REASON_MWAIT_INSTRUCTION] = handle_invalid_op, |
| 3730 | [EXIT_REASON_MONITOR_INSTRUCTION] = handle_invalid_op, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3731 | }; |
| 3732 | |
| 3733 | static const int kvm_vmx_max_exit_handlers = |
Robert P. J. Day | 50a3485 | 2007-06-03 13:35:29 -0400 | [diff] [blame] | 3734 | ARRAY_SIZE(kvm_vmx_exit_handlers); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3735 | |
Avi Kivity | 586f960 | 2010-11-18 13:09:54 +0200 | [diff] [blame] | 3736 | static void vmx_get_exit_info(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2) |
| 3737 | { |
| 3738 | *info1 = vmcs_readl(EXIT_QUALIFICATION); |
| 3739 | *info2 = vmcs_read32(VM_EXIT_INTR_INFO); |
| 3740 | } |
| 3741 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3742 | /* |
| 3743 | * The guest has exited. See if we can fix it or if we need userspace |
| 3744 | * assistance. |
| 3745 | */ |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3746 | static int vmx_handle_exit(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3747 | { |
Avi Kivity | 29bd8a7 | 2007-09-10 17:27:03 +0300 | [diff] [blame] | 3748 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Andi Kleen | a0861c0 | 2009-06-08 17:37:09 +0800 | [diff] [blame] | 3749 | u32 exit_reason = vmx->exit_reason; |
Avi Kivity | 1155f76 | 2007-11-22 11:30:47 +0200 | [diff] [blame] | 3750 | u32 vectoring_info = vmx->idt_vectoring_info; |
Avi Kivity | 29bd8a7 | 2007-09-10 17:27:03 +0300 | [diff] [blame] | 3751 | |
Avi Kivity | aa17911 | 2010-11-17 18:44:19 +0200 | [diff] [blame] | 3752 | trace_kvm_exit(exit_reason, vcpu, KVM_ISA_VMX); |
Feng (Eric) Liu | 2714d1d | 2008-04-10 15:31:10 -0400 | [diff] [blame] | 3753 | |
Mohammed Gamal | 80ced18 | 2009-09-01 12:48:18 +0200 | [diff] [blame] | 3754 | /* If guest state is invalid, start emulating */ |
| 3755 | if (vmx->emulation_required && emulate_invalid_guest_state) |
| 3756 | return handle_invalid_guest_state(vcpu); |
Guillaume Thouvenin | 1d5a4d9 | 2008-10-29 09:39:42 +0100 | [diff] [blame] | 3757 | |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3758 | /* Access CR3 don't cause VMExit in paging mode, so we need |
| 3759 | * to sync with guest real CR3. */ |
Avi Kivity | 6de4f3a | 2009-05-31 22:58:47 +0300 | [diff] [blame] | 3760 | if (enable_ept && is_paging(vcpu)) |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3761 | vcpu->arch.cr3 = vmcs_readl(GUEST_CR3); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3762 | |
Mohammed Gamal | 5120702 | 2010-05-31 22:40:54 +0300 | [diff] [blame] | 3763 | if (exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY) { |
| 3764 | vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY; |
| 3765 | vcpu->run->fail_entry.hardware_entry_failure_reason |
| 3766 | = exit_reason; |
| 3767 | return 0; |
| 3768 | } |
| 3769 | |
Avi Kivity | 29bd8a7 | 2007-09-10 17:27:03 +0300 | [diff] [blame] | 3770 | if (unlikely(vmx->fail)) { |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3771 | vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY; |
| 3772 | vcpu->run->fail_entry.hardware_entry_failure_reason |
Avi Kivity | 29bd8a7 | 2007-09-10 17:27:03 +0300 | [diff] [blame] | 3773 | = vmcs_read32(VM_INSTRUCTION_ERROR); |
| 3774 | return 0; |
| 3775 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3776 | |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 3777 | if ((vectoring_info & VECTORING_INFO_VALID_MASK) && |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 3778 | (exit_reason != EXIT_REASON_EXCEPTION_NMI && |
Jan Kiszka | 60637aa | 2008-09-26 09:30:47 +0200 | [diff] [blame] | 3779 | exit_reason != EXIT_REASON_EPT_VIOLATION && |
| 3780 | exit_reason != EXIT_REASON_TASK_SWITCH)) |
| 3781 | printk(KERN_WARNING "%s: unexpected, valid vectoring info " |
| 3782 | "(0x%x) and exit reason is 0x%x\n", |
| 3783 | __func__, vectoring_info, exit_reason); |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 3784 | |
| 3785 | if (unlikely(!cpu_has_virtual_nmis() && vmx->soft_vnmi_blocked)) { |
Gleb Natapov | c4282df | 2009-04-21 17:45:07 +0300 | [diff] [blame] | 3786 | if (vmx_interrupt_allowed(vcpu)) { |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 3787 | vmx->soft_vnmi_blocked = 0; |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 3788 | } else if (vmx->vnmi_blocked_time > 1000000000LL && |
Jan Kiszka | 4531220 | 2008-12-11 16:54:54 +0100 | [diff] [blame] | 3789 | vcpu->arch.nmi_pending) { |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 3790 | /* |
| 3791 | * This CPU don't support us in finding the end of an |
| 3792 | * NMI-blocked window if the guest runs with IRQs |
| 3793 | * disabled. So we pull the trigger after 1 s of |
| 3794 | * futile waiting, but inform the user about this. |
| 3795 | */ |
| 3796 | printk(KERN_WARNING "%s: Breaking out of NMI-blocked " |
| 3797 | "state on VCPU %d after 1 s timeout\n", |
| 3798 | __func__, vcpu->vcpu_id); |
| 3799 | vmx->soft_vnmi_blocked = 0; |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 3800 | } |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 3801 | } |
| 3802 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3803 | if (exit_reason < kvm_vmx_max_exit_handlers |
| 3804 | && kvm_vmx_exit_handlers[exit_reason]) |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3805 | return kvm_vmx_exit_handlers[exit_reason](vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3806 | else { |
Avi Kivity | 851ba69 | 2009-08-24 11:10:17 +0300 | [diff] [blame] | 3807 | vcpu->run->exit_reason = KVM_EXIT_UNKNOWN; |
| 3808 | vcpu->run->hw.hardware_exit_reason = exit_reason; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3809 | } |
| 3810 | return 0; |
| 3811 | } |
| 3812 | |
Gleb Natapov | 95ba827313 | 2009-04-21 17:45:08 +0300 | [diff] [blame] | 3813 | static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr) |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 3814 | { |
Gleb Natapov | 95ba827313 | 2009-04-21 17:45:08 +0300 | [diff] [blame] | 3815 | if (irr == -1 || tpr < irr) { |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 3816 | vmcs_write32(TPR_THRESHOLD, 0); |
| 3817 | return; |
| 3818 | } |
| 3819 | |
Gleb Natapov | 95ba827313 | 2009-04-21 17:45:08 +0300 | [diff] [blame] | 3820 | vmcs_write32(TPR_THRESHOLD, irr); |
Yang, Sheng | 6e5d865 | 2007-09-12 18:03:11 +0800 | [diff] [blame] | 3821 | } |
| 3822 | |
Avi Kivity | 51aa01d | 2010-07-20 14:31:20 +0300 | [diff] [blame] | 3823 | static void vmx_complete_atomic_exit(struct vcpu_vmx *vmx) |
Avi Kivity | cf393f7 | 2008-07-01 16:20:21 +0300 | [diff] [blame] | 3824 | { |
Avi Kivity | 51aa01d | 2010-07-20 14:31:20 +0300 | [diff] [blame] | 3825 | u32 exit_intr_info = vmx->exit_intr_info; |
Andi Kleen | a0861c0 | 2009-06-08 17:37:09 +0800 | [diff] [blame] | 3826 | |
| 3827 | /* Handle machine checks before interrupts are enabled */ |
| 3828 | if ((vmx->exit_reason == EXIT_REASON_MCE_DURING_VMENTRY) |
| 3829 | || (vmx->exit_reason == EXIT_REASON_EXCEPTION_NMI |
| 3830 | && is_machine_check(exit_intr_info))) |
| 3831 | kvm_machine_check(); |
| 3832 | |
Gleb Natapov | 20f6598 | 2009-05-11 13:35:55 +0300 | [diff] [blame] | 3833 | /* We need to handle NMIs before interrupts are enabled */ |
| 3834 | if ((exit_intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR && |
Zhang, Yanmin | ff9d07a | 2010-04-19 13:32:45 +0800 | [diff] [blame] | 3835 | (exit_intr_info & INTR_INFO_VALID_MASK)) { |
| 3836 | kvm_before_handle_nmi(&vmx->vcpu); |
Gleb Natapov | 20f6598 | 2009-05-11 13:35:55 +0300 | [diff] [blame] | 3837 | asm("int $2"); |
Zhang, Yanmin | ff9d07a | 2010-04-19 13:32:45 +0800 | [diff] [blame] | 3838 | kvm_after_handle_nmi(&vmx->vcpu); |
| 3839 | } |
Avi Kivity | 51aa01d | 2010-07-20 14:31:20 +0300 | [diff] [blame] | 3840 | } |
Gleb Natapov | 20f6598 | 2009-05-11 13:35:55 +0300 | [diff] [blame] | 3841 | |
Avi Kivity | 51aa01d | 2010-07-20 14:31:20 +0300 | [diff] [blame] | 3842 | static void vmx_recover_nmi_blocking(struct vcpu_vmx *vmx) |
| 3843 | { |
| 3844 | u32 exit_intr_info = vmx->exit_intr_info; |
| 3845 | bool unblock_nmi; |
| 3846 | u8 vector; |
| 3847 | bool idtv_info_valid; |
| 3848 | |
| 3849 | idtv_info_valid = vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK; |
Gleb Natapov | 20f6598 | 2009-05-11 13:35:55 +0300 | [diff] [blame] | 3850 | |
Avi Kivity | cf393f7 | 2008-07-01 16:20:21 +0300 | [diff] [blame] | 3851 | if (cpu_has_virtual_nmis()) { |
| 3852 | unblock_nmi = (exit_intr_info & INTR_INFO_UNBLOCK_NMI) != 0; |
| 3853 | vector = exit_intr_info & INTR_INFO_VECTOR_MASK; |
| 3854 | /* |
Gleb Natapov | 7b4a25c | 2009-03-30 16:03:08 +0300 | [diff] [blame] | 3855 | * SDM 3: 27.7.1.2 (September 2008) |
Avi Kivity | cf393f7 | 2008-07-01 16:20:21 +0300 | [diff] [blame] | 3856 | * Re-set bit "block by NMI" before VM entry if vmexit caused by |
| 3857 | * a guest IRET fault. |
Gleb Natapov | 7b4a25c | 2009-03-30 16:03:08 +0300 | [diff] [blame] | 3858 | * SDM 3: 23.2.2 (September 2008) |
| 3859 | * Bit 12 is undefined in any of the following cases: |
| 3860 | * If the VM exit sets the valid bit in the IDT-vectoring |
| 3861 | * information field. |
| 3862 | * If the VM exit is due to a double fault. |
Avi Kivity | cf393f7 | 2008-07-01 16:20:21 +0300 | [diff] [blame] | 3863 | */ |
Gleb Natapov | 7b4a25c | 2009-03-30 16:03:08 +0300 | [diff] [blame] | 3864 | if ((exit_intr_info & INTR_INFO_VALID_MASK) && unblock_nmi && |
| 3865 | vector != DF_VECTOR && !idtv_info_valid) |
Avi Kivity | cf393f7 | 2008-07-01 16:20:21 +0300 | [diff] [blame] | 3866 | vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO, |
| 3867 | GUEST_INTR_STATE_NMI); |
Jan Kiszka | 3b86cd9 | 2008-09-26 09:30:57 +0200 | [diff] [blame] | 3868 | } else if (unlikely(vmx->soft_vnmi_blocked)) |
| 3869 | vmx->vnmi_blocked_time += |
| 3870 | ktime_to_ns(ktime_sub(ktime_get(), vmx->entry_time)); |
Avi Kivity | 51aa01d | 2010-07-20 14:31:20 +0300 | [diff] [blame] | 3871 | } |
| 3872 | |
Avi Kivity | 83422e1 | 2010-07-20 14:43:23 +0300 | [diff] [blame] | 3873 | static void __vmx_complete_interrupts(struct vcpu_vmx *vmx, |
| 3874 | u32 idt_vectoring_info, |
| 3875 | int instr_len_field, |
| 3876 | int error_code_field) |
Avi Kivity | 51aa01d | 2010-07-20 14:31:20 +0300 | [diff] [blame] | 3877 | { |
Avi Kivity | 51aa01d | 2010-07-20 14:31:20 +0300 | [diff] [blame] | 3878 | u8 vector; |
| 3879 | int type; |
| 3880 | bool idtv_info_valid; |
| 3881 | |
| 3882 | idtv_info_valid = idt_vectoring_info & VECTORING_INFO_VALID_MASK; |
Avi Kivity | 668f612 | 2008-07-02 09:28:55 +0300 | [diff] [blame] | 3883 | |
Gleb Natapov | 37b96e9 | 2009-03-30 16:03:13 +0300 | [diff] [blame] | 3884 | vmx->vcpu.arch.nmi_injected = false; |
| 3885 | kvm_clear_exception_queue(&vmx->vcpu); |
| 3886 | kvm_clear_interrupt_queue(&vmx->vcpu); |
| 3887 | |
| 3888 | if (!idtv_info_valid) |
| 3889 | return; |
| 3890 | |
Avi Kivity | 3842d13 | 2010-07-27 12:30:24 +0300 | [diff] [blame] | 3891 | kvm_make_request(KVM_REQ_EVENT, &vmx->vcpu); |
| 3892 | |
Avi Kivity | 668f612 | 2008-07-02 09:28:55 +0300 | [diff] [blame] | 3893 | vector = idt_vectoring_info & VECTORING_INFO_VECTOR_MASK; |
| 3894 | type = idt_vectoring_info & VECTORING_INFO_TYPE_MASK; |
Gleb Natapov | 37b96e9 | 2009-03-30 16:03:13 +0300 | [diff] [blame] | 3895 | |
Gleb Natapov | 64a7ec0 | 2009-03-30 16:03:29 +0300 | [diff] [blame] | 3896 | switch (type) { |
Gleb Natapov | 37b96e9 | 2009-03-30 16:03:13 +0300 | [diff] [blame] | 3897 | case INTR_TYPE_NMI_INTR: |
| 3898 | vmx->vcpu.arch.nmi_injected = true; |
Avi Kivity | 668f612 | 2008-07-02 09:28:55 +0300 | [diff] [blame] | 3899 | /* |
Gleb Natapov | 7b4a25c | 2009-03-30 16:03:08 +0300 | [diff] [blame] | 3900 | * SDM 3: 27.7.1.2 (September 2008) |
Gleb Natapov | 37b96e9 | 2009-03-30 16:03:13 +0300 | [diff] [blame] | 3901 | * Clear bit "block by NMI" before VM entry if a NMI |
| 3902 | * delivery faulted. |
Avi Kivity | 668f612 | 2008-07-02 09:28:55 +0300 | [diff] [blame] | 3903 | */ |
Gleb Natapov | 37b96e9 | 2009-03-30 16:03:13 +0300 | [diff] [blame] | 3904 | vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO, |
| 3905 | GUEST_INTR_STATE_NMI); |
| 3906 | break; |
Gleb Natapov | 37b96e9 | 2009-03-30 16:03:13 +0300 | [diff] [blame] | 3907 | case INTR_TYPE_SOFT_EXCEPTION: |
Gleb Natapov | 66fd3f7 | 2009-05-11 13:35:50 +0300 | [diff] [blame] | 3908 | vmx->vcpu.arch.event_exit_inst_len = |
Avi Kivity | 83422e1 | 2010-07-20 14:43:23 +0300 | [diff] [blame] | 3909 | vmcs_read32(instr_len_field); |
Gleb Natapov | 66fd3f7 | 2009-05-11 13:35:50 +0300 | [diff] [blame] | 3910 | /* fall through */ |
| 3911 | case INTR_TYPE_HARD_EXCEPTION: |
Avi Kivity | 35920a3 | 2008-07-03 14:50:12 +0300 | [diff] [blame] | 3912 | if (idt_vectoring_info & VECTORING_INFO_DELIVER_CODE_MASK) { |
Avi Kivity | 83422e1 | 2010-07-20 14:43:23 +0300 | [diff] [blame] | 3913 | u32 err = vmcs_read32(error_code_field); |
Gleb Natapov | 37b96e9 | 2009-03-30 16:03:13 +0300 | [diff] [blame] | 3914 | kvm_queue_exception_e(&vmx->vcpu, vector, err); |
Avi Kivity | 35920a3 | 2008-07-03 14:50:12 +0300 | [diff] [blame] | 3915 | } else |
| 3916 | kvm_queue_exception(&vmx->vcpu, vector); |
Gleb Natapov | 37b96e9 | 2009-03-30 16:03:13 +0300 | [diff] [blame] | 3917 | break; |
Gleb Natapov | 66fd3f7 | 2009-05-11 13:35:50 +0300 | [diff] [blame] | 3918 | case INTR_TYPE_SOFT_INTR: |
| 3919 | vmx->vcpu.arch.event_exit_inst_len = |
Avi Kivity | 83422e1 | 2010-07-20 14:43:23 +0300 | [diff] [blame] | 3920 | vmcs_read32(instr_len_field); |
Gleb Natapov | 66fd3f7 | 2009-05-11 13:35:50 +0300 | [diff] [blame] | 3921 | /* fall through */ |
Gleb Natapov | 37b96e9 | 2009-03-30 16:03:13 +0300 | [diff] [blame] | 3922 | case INTR_TYPE_EXT_INTR: |
Gleb Natapov | 66fd3f7 | 2009-05-11 13:35:50 +0300 | [diff] [blame] | 3923 | kvm_queue_interrupt(&vmx->vcpu, vector, |
| 3924 | type == INTR_TYPE_SOFT_INTR); |
Gleb Natapov | 37b96e9 | 2009-03-30 16:03:13 +0300 | [diff] [blame] | 3925 | break; |
| 3926 | default: |
| 3927 | break; |
Avi Kivity | f7d9238 | 2008-07-03 16:14:28 +0300 | [diff] [blame] | 3928 | } |
Avi Kivity | cf393f7 | 2008-07-01 16:20:21 +0300 | [diff] [blame] | 3929 | } |
| 3930 | |
Avi Kivity | 83422e1 | 2010-07-20 14:43:23 +0300 | [diff] [blame] | 3931 | static void vmx_complete_interrupts(struct vcpu_vmx *vmx) |
| 3932 | { |
| 3933 | __vmx_complete_interrupts(vmx, vmx->idt_vectoring_info, |
| 3934 | VM_EXIT_INSTRUCTION_LEN, |
| 3935 | IDT_VECTORING_ERROR_CODE); |
| 3936 | } |
| 3937 | |
Avi Kivity | b463a6f | 2010-07-20 15:06:17 +0300 | [diff] [blame] | 3938 | static void vmx_cancel_injection(struct kvm_vcpu *vcpu) |
| 3939 | { |
| 3940 | __vmx_complete_interrupts(to_vmx(vcpu), |
| 3941 | vmcs_read32(VM_ENTRY_INTR_INFO_FIELD), |
| 3942 | VM_ENTRY_INSTRUCTION_LEN, |
| 3943 | VM_ENTRY_EXCEPTION_ERROR_CODE); |
| 3944 | |
| 3945 | vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0); |
| 3946 | } |
| 3947 | |
Avi Kivity | c801949 | 2008-07-14 14:44:59 +0300 | [diff] [blame] | 3948 | #ifdef CONFIG_X86_64 |
| 3949 | #define R "r" |
| 3950 | #define Q "q" |
| 3951 | #else |
| 3952 | #define R "e" |
| 3953 | #define Q "l" |
| 3954 | #endif |
| 3955 | |
Avi Kivity | 104f226 | 2010-11-18 13:12:52 +0200 | [diff] [blame] | 3956 | static void vmx_vcpu_run(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3957 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 3958 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
Avi Kivity | 104f226 | 2010-11-18 13:12:52 +0200 | [diff] [blame] | 3959 | |
| 3960 | /* Record the guest's net vcpu time for enforced NMI injections. */ |
| 3961 | if (unlikely(!cpu_has_virtual_nmis() && vmx->soft_vnmi_blocked)) |
| 3962 | vmx->entry_time = ktime_get(); |
| 3963 | |
| 3964 | /* Don't enter VMX if guest state is invalid, let the exit handler |
| 3965 | start emulation until we arrive back to a valid state */ |
| 3966 | if (vmx->emulation_required && emulate_invalid_guest_state) |
| 3967 | return; |
| 3968 | |
| 3969 | if (test_bit(VCPU_REGS_RSP, (unsigned long *)&vcpu->arch.regs_dirty)) |
| 3970 | vmcs_writel(GUEST_RSP, vcpu->arch.regs[VCPU_REGS_RSP]); |
| 3971 | if (test_bit(VCPU_REGS_RIP, (unsigned long *)&vcpu->arch.regs_dirty)) |
| 3972 | vmcs_writel(GUEST_RIP, vcpu->arch.regs[VCPU_REGS_RIP]); |
| 3973 | |
| 3974 | /* When single-stepping over STI and MOV SS, we must clear the |
| 3975 | * corresponding interruptibility bits in the guest state. Otherwise |
| 3976 | * vmentry fails as it then expects bit 14 (BS) in pending debug |
| 3977 | * exceptions being set, but that's not correct for the guest debugging |
| 3978 | * case. */ |
| 3979 | if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) |
| 3980 | vmx_set_interrupt_shadow(vcpu, 0); |
| 3981 | |
| 3982 | asm( |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3983 | /* Store host registers */ |
Avi Kivity | c801949 | 2008-07-14 14:44:59 +0300 | [diff] [blame] | 3984 | "push %%"R"dx; push %%"R"bp;" |
| 3985 | "push %%"R"cx \n\t" |
Avi Kivity | 313dbd4 | 2008-07-17 18:04:30 +0300 | [diff] [blame] | 3986 | "cmp %%"R"sp, %c[host_rsp](%0) \n\t" |
| 3987 | "je 1f \n\t" |
| 3988 | "mov %%"R"sp, %c[host_rsp](%0) \n\t" |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 3989 | __ex(ASM_VMX_VMWRITE_RSP_RDX) "\n\t" |
Avi Kivity | 313dbd4 | 2008-07-17 18:04:30 +0300 | [diff] [blame] | 3990 | "1: \n\t" |
Avi Kivity | d3edefc | 2009-06-16 12:33:56 +0300 | [diff] [blame] | 3991 | /* Reload cr2 if changed */ |
| 3992 | "mov %c[cr2](%0), %%"R"ax \n\t" |
| 3993 | "mov %%cr2, %%"R"dx \n\t" |
| 3994 | "cmp %%"R"ax, %%"R"dx \n\t" |
| 3995 | "je 2f \n\t" |
| 3996 | "mov %%"R"ax, %%cr2 \n\t" |
| 3997 | "2: \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 3998 | /* Check if vmlaunch of vmresume is needed */ |
Avi Kivity | e08aa78 | 2007-11-15 18:06:18 +0200 | [diff] [blame] | 3999 | "cmpl $0, %c[launched](%0) \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4000 | /* Load guest registers. Don't clobber flags. */ |
Avi Kivity | c801949 | 2008-07-14 14:44:59 +0300 | [diff] [blame] | 4001 | "mov %c[rax](%0), %%"R"ax \n\t" |
| 4002 | "mov %c[rbx](%0), %%"R"bx \n\t" |
| 4003 | "mov %c[rdx](%0), %%"R"dx \n\t" |
| 4004 | "mov %c[rsi](%0), %%"R"si \n\t" |
| 4005 | "mov %c[rdi](%0), %%"R"di \n\t" |
| 4006 | "mov %c[rbp](%0), %%"R"bp \n\t" |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 4007 | #ifdef CONFIG_X86_64 |
Avi Kivity | e08aa78 | 2007-11-15 18:06:18 +0200 | [diff] [blame] | 4008 | "mov %c[r8](%0), %%r8 \n\t" |
| 4009 | "mov %c[r9](%0), %%r9 \n\t" |
| 4010 | "mov %c[r10](%0), %%r10 \n\t" |
| 4011 | "mov %c[r11](%0), %%r11 \n\t" |
| 4012 | "mov %c[r12](%0), %%r12 \n\t" |
| 4013 | "mov %c[r13](%0), %%r13 \n\t" |
| 4014 | "mov %c[r14](%0), %%r14 \n\t" |
| 4015 | "mov %c[r15](%0), %%r15 \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4016 | #endif |
Avi Kivity | c801949 | 2008-07-14 14:44:59 +0300 | [diff] [blame] | 4017 | "mov %c[rcx](%0), %%"R"cx \n\t" /* kills %0 (ecx) */ |
| 4018 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4019 | /* Enter guest mode */ |
Avi Kivity | cd2276a | 2007-05-14 20:41:13 +0300 | [diff] [blame] | 4020 | "jne .Llaunched \n\t" |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 4021 | __ex(ASM_VMX_VMLAUNCH) "\n\t" |
Avi Kivity | cd2276a | 2007-05-14 20:41:13 +0300 | [diff] [blame] | 4022 | "jmp .Lkvm_vmx_return \n\t" |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 4023 | ".Llaunched: " __ex(ASM_VMX_VMRESUME) "\n\t" |
Avi Kivity | cd2276a | 2007-05-14 20:41:13 +0300 | [diff] [blame] | 4024 | ".Lkvm_vmx_return: " |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4025 | /* Save guest registers, load host registers, keep flags */ |
Avi Kivity | c801949 | 2008-07-14 14:44:59 +0300 | [diff] [blame] | 4026 | "xchg %0, (%%"R"sp) \n\t" |
| 4027 | "mov %%"R"ax, %c[rax](%0) \n\t" |
| 4028 | "mov %%"R"bx, %c[rbx](%0) \n\t" |
| 4029 | "push"Q" (%%"R"sp); pop"Q" %c[rcx](%0) \n\t" |
| 4030 | "mov %%"R"dx, %c[rdx](%0) \n\t" |
| 4031 | "mov %%"R"si, %c[rsi](%0) \n\t" |
| 4032 | "mov %%"R"di, %c[rdi](%0) \n\t" |
| 4033 | "mov %%"R"bp, %c[rbp](%0) \n\t" |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 4034 | #ifdef CONFIG_X86_64 |
Avi Kivity | e08aa78 | 2007-11-15 18:06:18 +0200 | [diff] [blame] | 4035 | "mov %%r8, %c[r8](%0) \n\t" |
| 4036 | "mov %%r9, %c[r9](%0) \n\t" |
| 4037 | "mov %%r10, %c[r10](%0) \n\t" |
| 4038 | "mov %%r11, %c[r11](%0) \n\t" |
| 4039 | "mov %%r12, %c[r12](%0) \n\t" |
| 4040 | "mov %%r13, %c[r13](%0) \n\t" |
| 4041 | "mov %%r14, %c[r14](%0) \n\t" |
| 4042 | "mov %%r15, %c[r15](%0) \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4043 | #endif |
Avi Kivity | c801949 | 2008-07-14 14:44:59 +0300 | [diff] [blame] | 4044 | "mov %%cr2, %%"R"ax \n\t" |
| 4045 | "mov %%"R"ax, %c[cr2](%0) \n\t" |
| 4046 | |
| 4047 | "pop %%"R"bp; pop %%"R"bp; pop %%"R"dx \n\t" |
Avi Kivity | e08aa78 | 2007-11-15 18:06:18 +0200 | [diff] [blame] | 4048 | "setbe %c[fail](%0) \n\t" |
| 4049 | : : "c"(vmx), "d"((unsigned long)HOST_RSP), |
| 4050 | [launched]"i"(offsetof(struct vcpu_vmx, launched)), |
| 4051 | [fail]"i"(offsetof(struct vcpu_vmx, fail)), |
Avi Kivity | 313dbd4 | 2008-07-17 18:04:30 +0300 | [diff] [blame] | 4052 | [host_rsp]"i"(offsetof(struct vcpu_vmx, host_rsp)), |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 4053 | [rax]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RAX])), |
| 4054 | [rbx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RBX])), |
| 4055 | [rcx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RCX])), |
| 4056 | [rdx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RDX])), |
| 4057 | [rsi]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RSI])), |
| 4058 | [rdi]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RDI])), |
| 4059 | [rbp]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RBP])), |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 4060 | #ifdef CONFIG_X86_64 |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 4061 | [r8]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R8])), |
| 4062 | [r9]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R9])), |
| 4063 | [r10]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R10])), |
| 4064 | [r11]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R11])), |
| 4065 | [r12]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R12])), |
| 4066 | [r13]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R13])), |
| 4067 | [r14]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R14])), |
| 4068 | [r15]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R15])), |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4069 | #endif |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 4070 | [cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)) |
Laurent Vivier | c203630 | 2007-10-25 14:18:52 +0200 | [diff] [blame] | 4071 | : "cc", "memory" |
Jan Kiszka | 07d6f55 | 2010-09-28 16:37:42 +0200 | [diff] [blame] | 4072 | , R"ax", R"bx", R"di", R"si" |
Laurent Vivier | c203630 | 2007-10-25 14:18:52 +0200 | [diff] [blame] | 4073 | #ifdef CONFIG_X86_64 |
Laurent Vivier | c203630 | 2007-10-25 14:18:52 +0200 | [diff] [blame] | 4074 | , "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" |
| 4075 | #endif |
| 4076 | ); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4077 | |
Avi Kivity | 6de4f3a | 2009-05-31 22:58:47 +0300 | [diff] [blame] | 4078 | vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP) |
| 4079 | | (1 << VCPU_EXREG_PDPTR)); |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 4080 | vcpu->arch.regs_dirty = 0; |
| 4081 | |
Avi Kivity | 1155f76 | 2007-11-22 11:30:47 +0200 | [diff] [blame] | 4082 | vmx->idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD); |
| 4083 | |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 4084 | asm("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS)); |
Avi Kivity | 15ad714 | 2007-07-11 18:17:21 +0300 | [diff] [blame] | 4085 | vmx->launched = 1; |
Avi Kivity | 1b6269d | 2007-10-09 12:12:19 +0200 | [diff] [blame] | 4086 | |
Avi Kivity | 51aa01d | 2010-07-20 14:31:20 +0300 | [diff] [blame] | 4087 | vmx->exit_reason = vmcs_read32(VM_EXIT_REASON); |
| 4088 | vmx->exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO); |
| 4089 | |
| 4090 | vmx_complete_atomic_exit(vmx); |
| 4091 | vmx_recover_nmi_blocking(vmx); |
Avi Kivity | cf393f7 | 2008-07-01 16:20:21 +0300 | [diff] [blame] | 4092 | vmx_complete_interrupts(vmx); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4093 | } |
| 4094 | |
Avi Kivity | c801949 | 2008-07-14 14:44:59 +0300 | [diff] [blame] | 4095 | #undef R |
| 4096 | #undef Q |
| 4097 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4098 | static void vmx_free_vmcs(struct kvm_vcpu *vcpu) |
| 4099 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 4100 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
| 4101 | |
| 4102 | if (vmx->vmcs) { |
Avi Kivity | 543e424 | 2008-05-13 16:22:47 +0300 | [diff] [blame] | 4103 | vcpu_clear(vmx); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 4104 | free_vmcs(vmx->vmcs); |
| 4105 | vmx->vmcs = NULL; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4106 | } |
| 4107 | } |
| 4108 | |
| 4109 | static void vmx_free_vcpu(struct kvm_vcpu *vcpu) |
| 4110 | { |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4111 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
| 4112 | |
Lai Jiangshan | cdbecfc | 2010-04-17 16:41:47 +0800 | [diff] [blame] | 4113 | free_vpid(vmx); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4114 | vmx_free_vmcs(vcpu); |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4115 | kfree(vmx->guest_msrs); |
| 4116 | kvm_vcpu_uninit(vcpu); |
Rusty Russell | a477034 | 2007-08-01 14:46:11 +1000 | [diff] [blame] | 4117 | kmem_cache_free(kvm_vcpu_cache, vmx); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4118 | } |
| 4119 | |
Dongxiao Xu | 4610c9c | 2010-05-11 18:29:48 +0800 | [diff] [blame] | 4120 | static inline void vmcs_init(struct vmcs *vmcs) |
| 4121 | { |
| 4122 | u64 phys_addr = __pa(per_cpu(vmxarea, raw_smp_processor_id())); |
| 4123 | |
| 4124 | if (!vmm_exclusive) |
| 4125 | kvm_cpu_vmxon(phys_addr); |
| 4126 | |
| 4127 | vmcs_clear(vmcs); |
| 4128 | |
| 4129 | if (!vmm_exclusive) |
| 4130 | kvm_cpu_vmxoff(); |
| 4131 | } |
| 4132 | |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4133 | static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4134 | { |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4135 | int err; |
Rusty Russell | c16f862 | 2007-07-30 21:12:19 +1000 | [diff] [blame] | 4136 | struct vcpu_vmx *vmx = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); |
Avi Kivity | 15ad714 | 2007-07-11 18:17:21 +0300 | [diff] [blame] | 4137 | int cpu; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4138 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 4139 | if (!vmx) |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4140 | return ERR_PTR(-ENOMEM); |
| 4141 | |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 4142 | allocate_vpid(vmx); |
| 4143 | |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4144 | err = kvm_vcpu_init(&vmx->vcpu, kvm, id); |
| 4145 | if (err) |
| 4146 | goto free_vcpu; |
Ingo Molnar | 965b58a | 2007-01-05 16:36:23 -0800 | [diff] [blame] | 4147 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 4148 | vmx->guest_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL); |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4149 | if (!vmx->guest_msrs) { |
| 4150 | err = -ENOMEM; |
| 4151 | goto uninit_vcpu; |
| 4152 | } |
Ingo Molnar | 965b58a | 2007-01-05 16:36:23 -0800 | [diff] [blame] | 4153 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 4154 | vmx->vmcs = alloc_vmcs(); |
| 4155 | if (!vmx->vmcs) |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4156 | goto free_msrs; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 4157 | |
Dongxiao Xu | 4610c9c | 2010-05-11 18:29:48 +0800 | [diff] [blame] | 4158 | vmcs_init(vmx->vmcs); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 4159 | |
Avi Kivity | 15ad714 | 2007-07-11 18:17:21 +0300 | [diff] [blame] | 4160 | cpu = get_cpu(); |
| 4161 | vmx_vcpu_load(&vmx->vcpu, cpu); |
Zachary Amsden | e48672f | 2010-08-19 22:07:23 -1000 | [diff] [blame] | 4162 | vmx->vcpu.cpu = cpu; |
Rusty Russell | 8b9cf98 | 2007-07-30 16:31:43 +1000 | [diff] [blame] | 4163 | err = vmx_vcpu_setup(vmx); |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4164 | vmx_vcpu_put(&vmx->vcpu); |
Avi Kivity | 15ad714 | 2007-07-11 18:17:21 +0300 | [diff] [blame] | 4165 | put_cpu(); |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4166 | if (err) |
| 4167 | goto free_vmcs; |
Marcelo Tosatti | 5e4a0b3 | 2008-02-14 21:21:43 -0200 | [diff] [blame] | 4168 | if (vm_need_virtualize_apic_accesses(kvm)) |
| 4169 | if (alloc_apic_access_page(kvm) != 0) |
| 4170 | goto free_vmcs; |
Ingo Molnar | 965b58a | 2007-01-05 16:36:23 -0800 | [diff] [blame] | 4171 | |
Sheng Yang | b927a3c | 2009-07-21 10:42:48 +0800 | [diff] [blame] | 4172 | if (enable_ept) { |
| 4173 | if (!kvm->arch.ept_identity_map_addr) |
| 4174 | kvm->arch.ept_identity_map_addr = |
| 4175 | VMX_EPT_IDENTITY_PAGETABLE_ADDR; |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 4176 | if (alloc_identity_pagetable(kvm) != 0) |
| 4177 | goto free_vmcs; |
Sheng Yang | b927a3c | 2009-07-21 10:42:48 +0800 | [diff] [blame] | 4178 | } |
Sheng Yang | b7ebfb0 | 2008-04-25 21:44:52 +0800 | [diff] [blame] | 4179 | |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4180 | return &vmx->vcpu; |
Ingo Molnar | 965b58a | 2007-01-05 16:36:23 -0800 | [diff] [blame] | 4181 | |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4182 | free_vmcs: |
| 4183 | free_vmcs(vmx->vmcs); |
| 4184 | free_msrs: |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4185 | kfree(vmx->guest_msrs); |
| 4186 | uninit_vcpu: |
| 4187 | kvm_vcpu_uninit(&vmx->vcpu); |
| 4188 | free_vcpu: |
Lai Jiangshan | cdbecfc | 2010-04-17 16:41:47 +0800 | [diff] [blame] | 4189 | free_vpid(vmx); |
Rusty Russell | a477034 | 2007-08-01 14:46:11 +1000 | [diff] [blame] | 4190 | kmem_cache_free(kvm_vcpu_cache, vmx); |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 4191 | return ERR_PTR(err); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4192 | } |
| 4193 | |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 4194 | static void __init vmx_check_processor_compat(void *rtn) |
| 4195 | { |
| 4196 | struct vmcs_config vmcs_conf; |
| 4197 | |
| 4198 | *(int *)rtn = 0; |
| 4199 | if (setup_vmcs_config(&vmcs_conf) < 0) |
| 4200 | *(int *)rtn = -EIO; |
| 4201 | if (memcmp(&vmcs_config, &vmcs_conf, sizeof(struct vmcs_config)) != 0) { |
| 4202 | printk(KERN_ERR "kvm: CPU %d feature inconsistency!\n", |
| 4203 | smp_processor_id()); |
| 4204 | *(int *)rtn = -EIO; |
| 4205 | } |
| 4206 | } |
| 4207 | |
Sheng Yang | 67253af | 2008-04-25 10:20:22 +0800 | [diff] [blame] | 4208 | static int get_ept_level(void) |
| 4209 | { |
| 4210 | return VMX_EPT_DEFAULT_GAW + 1; |
| 4211 | } |
| 4212 | |
Sheng Yang | 4b12f0d | 2009-04-27 20:35:42 +0800 | [diff] [blame] | 4213 | static u64 vmx_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio) |
Sheng Yang | 64d4d52 | 2008-10-09 16:01:57 +0800 | [diff] [blame] | 4214 | { |
Sheng Yang | 4b12f0d | 2009-04-27 20:35:42 +0800 | [diff] [blame] | 4215 | u64 ret; |
| 4216 | |
Sheng Yang | 522c68c | 2009-04-27 20:35:43 +0800 | [diff] [blame] | 4217 | /* For VT-d and EPT combination |
| 4218 | * 1. MMIO: always map as UC |
| 4219 | * 2. EPT with VT-d: |
| 4220 | * a. VT-d without snooping control feature: can't guarantee the |
| 4221 | * result, try to trust guest. |
| 4222 | * b. VT-d with snooping control feature: snooping control feature of |
| 4223 | * VT-d engine can guarantee the cache correctness. Just set it |
| 4224 | * to WB to keep consistent with host. So the same as item 3. |
Sheng Yang | a19a6d1 | 2010-02-09 16:41:53 +0800 | [diff] [blame] | 4225 | * 3. EPT without VT-d: always map as WB and set IPAT=1 to keep |
Sheng Yang | 522c68c | 2009-04-27 20:35:43 +0800 | [diff] [blame] | 4226 | * consistent with host MTRR |
| 4227 | */ |
Sheng Yang | 4b12f0d | 2009-04-27 20:35:42 +0800 | [diff] [blame] | 4228 | if (is_mmio) |
| 4229 | ret = MTRR_TYPE_UNCACHABLE << VMX_EPT_MT_EPTE_SHIFT; |
Sheng Yang | 522c68c | 2009-04-27 20:35:43 +0800 | [diff] [blame] | 4230 | else if (vcpu->kvm->arch.iommu_domain && |
| 4231 | !(vcpu->kvm->arch.iommu_flags & KVM_IOMMU_CACHE_COHERENCY)) |
| 4232 | ret = kvm_get_guest_memory_type(vcpu, gfn) << |
| 4233 | VMX_EPT_MT_EPTE_SHIFT; |
Sheng Yang | 4b12f0d | 2009-04-27 20:35:42 +0800 | [diff] [blame] | 4234 | else |
Sheng Yang | 522c68c | 2009-04-27 20:35:43 +0800 | [diff] [blame] | 4235 | ret = (MTRR_TYPE_WRBACK << VMX_EPT_MT_EPTE_SHIFT) |
Sheng Yang | a19a6d1 | 2010-02-09 16:41:53 +0800 | [diff] [blame] | 4236 | | VMX_EPT_IPAT_BIT; |
Sheng Yang | 4b12f0d | 2009-04-27 20:35:42 +0800 | [diff] [blame] | 4237 | |
| 4238 | return ret; |
Sheng Yang | 64d4d52 | 2008-10-09 16:01:57 +0800 | [diff] [blame] | 4239 | } |
| 4240 | |
Avi Kivity | f4c9e87 | 2009-12-28 16:06:35 +0200 | [diff] [blame] | 4241 | #define _ER(x) { EXIT_REASON_##x, #x } |
| 4242 | |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 4243 | static const struct trace_print_flags vmx_exit_reasons_str[] = { |
Avi Kivity | f4c9e87 | 2009-12-28 16:06:35 +0200 | [diff] [blame] | 4244 | _ER(EXCEPTION_NMI), |
| 4245 | _ER(EXTERNAL_INTERRUPT), |
| 4246 | _ER(TRIPLE_FAULT), |
| 4247 | _ER(PENDING_INTERRUPT), |
| 4248 | _ER(NMI_WINDOW), |
| 4249 | _ER(TASK_SWITCH), |
| 4250 | _ER(CPUID), |
| 4251 | _ER(HLT), |
| 4252 | _ER(INVLPG), |
| 4253 | _ER(RDPMC), |
| 4254 | _ER(RDTSC), |
| 4255 | _ER(VMCALL), |
| 4256 | _ER(VMCLEAR), |
| 4257 | _ER(VMLAUNCH), |
| 4258 | _ER(VMPTRLD), |
| 4259 | _ER(VMPTRST), |
| 4260 | _ER(VMREAD), |
| 4261 | _ER(VMRESUME), |
| 4262 | _ER(VMWRITE), |
| 4263 | _ER(VMOFF), |
| 4264 | _ER(VMON), |
| 4265 | _ER(CR_ACCESS), |
| 4266 | _ER(DR_ACCESS), |
| 4267 | _ER(IO_INSTRUCTION), |
| 4268 | _ER(MSR_READ), |
| 4269 | _ER(MSR_WRITE), |
| 4270 | _ER(MWAIT_INSTRUCTION), |
| 4271 | _ER(MONITOR_INSTRUCTION), |
| 4272 | _ER(PAUSE_INSTRUCTION), |
| 4273 | _ER(MCE_DURING_VMENTRY), |
| 4274 | _ER(TPR_BELOW_THRESHOLD), |
| 4275 | _ER(APIC_ACCESS), |
| 4276 | _ER(EPT_VIOLATION), |
| 4277 | _ER(EPT_MISCONFIG), |
| 4278 | _ER(WBINVD), |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 4279 | { -1, NULL } |
| 4280 | }; |
| 4281 | |
Avi Kivity | f4c9e87 | 2009-12-28 16:06:35 +0200 | [diff] [blame] | 4282 | #undef _ER |
| 4283 | |
Sheng Yang | 17cc393 | 2010-01-05 19:02:27 +0800 | [diff] [blame] | 4284 | static int vmx_get_lpage_level(void) |
Joerg Roedel | 344f414 | 2009-07-27 16:30:48 +0200 | [diff] [blame] | 4285 | { |
Sheng Yang | 878403b | 2010-01-05 19:02:29 +0800 | [diff] [blame] | 4286 | if (enable_ept && !cpu_has_vmx_ept_1g_page()) |
| 4287 | return PT_DIRECTORY_LEVEL; |
| 4288 | else |
| 4289 | /* For shadow and EPT supported 1GB page */ |
| 4290 | return PT_PDPE_LEVEL; |
Joerg Roedel | 344f414 | 2009-07-27 16:30:48 +0200 | [diff] [blame] | 4291 | } |
| 4292 | |
Sheng Yang | 0e85188 | 2009-12-18 16:48:46 +0800 | [diff] [blame] | 4293 | static void vmx_cpuid_update(struct kvm_vcpu *vcpu) |
| 4294 | { |
Sheng Yang | 4e47c7a | 2009-12-18 16:48:47 +0800 | [diff] [blame] | 4295 | struct kvm_cpuid_entry2 *best; |
| 4296 | struct vcpu_vmx *vmx = to_vmx(vcpu); |
| 4297 | u32 exec_control; |
| 4298 | |
| 4299 | vmx->rdtscp_enabled = false; |
| 4300 | if (vmx_rdtscp_supported()) { |
| 4301 | exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL); |
| 4302 | if (exec_control & SECONDARY_EXEC_RDTSCP) { |
| 4303 | best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0); |
| 4304 | if (best && (best->edx & bit(X86_FEATURE_RDTSCP))) |
| 4305 | vmx->rdtscp_enabled = true; |
| 4306 | else { |
| 4307 | exec_control &= ~SECONDARY_EXEC_RDTSCP; |
| 4308 | vmcs_write32(SECONDARY_VM_EXEC_CONTROL, |
| 4309 | exec_control); |
| 4310 | } |
| 4311 | } |
| 4312 | } |
Sheng Yang | 0e85188 | 2009-12-18 16:48:46 +0800 | [diff] [blame] | 4313 | } |
| 4314 | |
Joerg Roedel | d4330ef | 2010-04-22 12:33:11 +0200 | [diff] [blame] | 4315 | static void vmx_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry) |
| 4316 | { |
| 4317 | } |
| 4318 | |
Christian Ehrhardt | cbdd1be | 2007-09-09 15:41:59 +0300 | [diff] [blame] | 4319 | static struct kvm_x86_ops vmx_x86_ops = { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4320 | .cpu_has_kvm_support = cpu_has_kvm_support, |
| 4321 | .disabled_by_bios = vmx_disabled_by_bios, |
| 4322 | .hardware_setup = hardware_setup, |
| 4323 | .hardware_unsetup = hardware_unsetup, |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 4324 | .check_processor_compatibility = vmx_check_processor_compat, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4325 | .hardware_enable = hardware_enable, |
| 4326 | .hardware_disable = hardware_disable, |
Sheng Yang | 0454715 | 2009-04-01 15:52:31 +0800 | [diff] [blame] | 4327 | .cpu_has_accelerated_tpr = report_flexpriority, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4328 | |
| 4329 | .vcpu_create = vmx_create_vcpu, |
| 4330 | .vcpu_free = vmx_free_vcpu, |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 4331 | .vcpu_reset = vmx_vcpu_reset, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4332 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 4333 | .prepare_guest_switch = vmx_save_host_state, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4334 | .vcpu_load = vmx_vcpu_load, |
| 4335 | .vcpu_put = vmx_vcpu_put, |
| 4336 | |
| 4337 | .set_guest_debug = set_guest_debug, |
| 4338 | .get_msr = vmx_get_msr, |
| 4339 | .set_msr = vmx_set_msr, |
| 4340 | .get_segment_base = vmx_get_segment_base, |
| 4341 | .get_segment = vmx_get_segment, |
| 4342 | .set_segment = vmx_set_segment, |
Izik Eidus | 2e4d265 | 2008-03-24 19:38:34 +0200 | [diff] [blame] | 4343 | .get_cpl = vmx_get_cpl, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4344 | .get_cs_db_l_bits = vmx_get_cs_db_l_bits, |
Avi Kivity | e8467fd | 2009-12-29 18:43:06 +0200 | [diff] [blame] | 4345 | .decache_cr0_guest_bits = vmx_decache_cr0_guest_bits, |
Anthony Liguori | 25c4c27 | 2007-04-27 09:29:21 +0300 | [diff] [blame] | 4346 | .decache_cr4_guest_bits = vmx_decache_cr4_guest_bits, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4347 | .set_cr0 = vmx_set_cr0, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4348 | .set_cr3 = vmx_set_cr3, |
| 4349 | .set_cr4 = vmx_set_cr4, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4350 | .set_efer = vmx_set_efer, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4351 | .get_idt = vmx_get_idt, |
| 4352 | .set_idt = vmx_set_idt, |
| 4353 | .get_gdt = vmx_get_gdt, |
| 4354 | .set_gdt = vmx_set_gdt, |
Gleb Natapov | 020df07 | 2010-04-13 10:05:23 +0300 | [diff] [blame] | 4355 | .set_dr7 = vmx_set_dr7, |
Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 4356 | .cache_reg = vmx_cache_reg, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4357 | .get_rflags = vmx_get_rflags, |
| 4358 | .set_rflags = vmx_set_rflags, |
Avi Kivity | ebcbab4 | 2010-02-07 11:56:52 +0200 | [diff] [blame] | 4359 | .fpu_activate = vmx_fpu_activate, |
Avi Kivity | 02daab2 | 2009-12-30 12:40:26 +0200 | [diff] [blame] | 4360 | .fpu_deactivate = vmx_fpu_deactivate, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4361 | |
| 4362 | .tlb_flush = vmx_flush_tlb, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4363 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4364 | .run = vmx_vcpu_run, |
Avi Kivity | 6062d01 | 2009-03-23 17:35:17 +0200 | [diff] [blame] | 4365 | .handle_exit = vmx_handle_exit, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4366 | .skip_emulated_instruction = skip_emulated_instruction, |
Glauber Costa | 2809f5d | 2009-05-12 16:21:05 -0400 | [diff] [blame] | 4367 | .set_interrupt_shadow = vmx_set_interrupt_shadow, |
| 4368 | .get_interrupt_shadow = vmx_get_interrupt_shadow, |
Ingo Molnar | 102d832 | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 4369 | .patch_hypercall = vmx_patch_hypercall, |
Eddie Dong | 2a8067f | 2007-08-06 16:29:07 +0300 | [diff] [blame] | 4370 | .set_irq = vmx_inject_irq, |
Gleb Natapov | 95ba827313 | 2009-04-21 17:45:08 +0300 | [diff] [blame] | 4371 | .set_nmi = vmx_inject_nmi, |
Avi Kivity | 298101d | 2007-11-25 13:41:11 +0200 | [diff] [blame] | 4372 | .queue_exception = vmx_queue_exception, |
Avi Kivity | b463a6f | 2010-07-20 15:06:17 +0300 | [diff] [blame] | 4373 | .cancel_injection = vmx_cancel_injection, |
Gleb Natapov | 7864612 | 2009-03-23 12:12:11 +0200 | [diff] [blame] | 4374 | .interrupt_allowed = vmx_interrupt_allowed, |
Gleb Natapov | 95ba827313 | 2009-04-21 17:45:08 +0300 | [diff] [blame] | 4375 | .nmi_allowed = vmx_nmi_allowed, |
Jan Kiszka | 3cfc309 | 2009-11-12 01:04:25 +0100 | [diff] [blame] | 4376 | .get_nmi_mask = vmx_get_nmi_mask, |
| 4377 | .set_nmi_mask = vmx_set_nmi_mask, |
Gleb Natapov | 95ba827313 | 2009-04-21 17:45:08 +0300 | [diff] [blame] | 4378 | .enable_nmi_window = enable_nmi_window, |
| 4379 | .enable_irq_window = enable_irq_window, |
| 4380 | .update_cr8_intercept = update_cr8_intercept, |
Gleb Natapov | 95ba827313 | 2009-04-21 17:45:08 +0300 | [diff] [blame] | 4381 | |
Izik Eidus | cbc9402 | 2007-10-25 00:29:55 +0200 | [diff] [blame] | 4382 | .set_tss_addr = vmx_set_tss_addr, |
Sheng Yang | 67253af | 2008-04-25 10:20:22 +0800 | [diff] [blame] | 4383 | .get_tdp_level = get_ept_level, |
Sheng Yang | 4b12f0d | 2009-04-27 20:35:42 +0800 | [diff] [blame] | 4384 | .get_mt_mask = vmx_get_mt_mask, |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 4385 | |
Avi Kivity | 586f960 | 2010-11-18 13:09:54 +0200 | [diff] [blame] | 4386 | .get_exit_info = vmx_get_exit_info, |
Marcelo Tosatti | 229456f | 2009-06-17 09:22:14 -0300 | [diff] [blame] | 4387 | .exit_reasons_str = vmx_exit_reasons_str, |
Avi Kivity | 586f960 | 2010-11-18 13:09:54 +0200 | [diff] [blame] | 4388 | |
Sheng Yang | 17cc393 | 2010-01-05 19:02:27 +0800 | [diff] [blame] | 4389 | .get_lpage_level = vmx_get_lpage_level, |
Sheng Yang | 0e85188 | 2009-12-18 16:48:46 +0800 | [diff] [blame] | 4390 | |
| 4391 | .cpuid_update = vmx_cpuid_update, |
Sheng Yang | 4e47c7a | 2009-12-18 16:48:47 +0800 | [diff] [blame] | 4392 | |
| 4393 | .rdtscp_supported = vmx_rdtscp_supported, |
Joerg Roedel | d4330ef | 2010-04-22 12:33:11 +0200 | [diff] [blame] | 4394 | |
| 4395 | .set_supported_cpuid = vmx_set_supported_cpuid, |
Sheng Yang | f5f48ee | 2010-06-30 12:25:15 +0800 | [diff] [blame] | 4396 | |
| 4397 | .has_wbinvd_exit = cpu_has_vmx_wbinvd_exit, |
Zachary Amsden | 99e3e30 | 2010-08-19 22:07:17 -1000 | [diff] [blame] | 4398 | |
| 4399 | .write_tsc_offset = vmx_write_tsc_offset, |
Zachary Amsden | e48672f | 2010-08-19 22:07:23 -1000 | [diff] [blame] | 4400 | .adjust_tsc_offset = vmx_adjust_tsc_offset, |
Joerg Roedel | 1c97f0a | 2010-09-10 17:30:41 +0200 | [diff] [blame] | 4401 | |
| 4402 | .set_tdp_cr3 = vmx_set_cr3, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4403 | }; |
| 4404 | |
| 4405 | static int __init vmx_init(void) |
| 4406 | { |
Avi Kivity | 26bb098 | 2009-09-07 11:14:12 +0300 | [diff] [blame] | 4407 | int r, i; |
| 4408 | |
| 4409 | rdmsrl_safe(MSR_EFER, &host_efer); |
| 4410 | |
| 4411 | for (i = 0; i < NR_VMX_MSR; ++i) |
| 4412 | kvm_define_shared_msr(i, vmx_msr_index[i]); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4413 | |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 4414 | vmx_io_bitmap_a = (unsigned long *)__get_free_page(GFP_KERNEL); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4415 | if (!vmx_io_bitmap_a) |
| 4416 | return -ENOMEM; |
| 4417 | |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 4418 | vmx_io_bitmap_b = (unsigned long *)__get_free_page(GFP_KERNEL); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4419 | if (!vmx_io_bitmap_b) { |
| 4420 | r = -ENOMEM; |
| 4421 | goto out; |
| 4422 | } |
| 4423 | |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 4424 | vmx_msr_bitmap_legacy = (unsigned long *)__get_free_page(GFP_KERNEL); |
| 4425 | if (!vmx_msr_bitmap_legacy) { |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 4426 | r = -ENOMEM; |
| 4427 | goto out1; |
| 4428 | } |
| 4429 | |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 4430 | vmx_msr_bitmap_longmode = (unsigned long *)__get_free_page(GFP_KERNEL); |
| 4431 | if (!vmx_msr_bitmap_longmode) { |
| 4432 | r = -ENOMEM; |
| 4433 | goto out2; |
| 4434 | } |
| 4435 | |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4436 | /* |
| 4437 | * Allow direct access to the PC debug port (it is often used for I/O |
| 4438 | * delays, but the vmexits simply slow things down). |
| 4439 | */ |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 4440 | memset(vmx_io_bitmap_a, 0xff, PAGE_SIZE); |
| 4441 | clear_bit(0x80, vmx_io_bitmap_a); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4442 | |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 4443 | memset(vmx_io_bitmap_b, 0xff, PAGE_SIZE); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4444 | |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 4445 | memset(vmx_msr_bitmap_legacy, 0xff, PAGE_SIZE); |
| 4446 | memset(vmx_msr_bitmap_longmode, 0xff, PAGE_SIZE); |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 4447 | |
Sheng Yang | 2384d2b | 2008-01-17 15:14:33 +0800 | [diff] [blame] | 4448 | set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */ |
| 4449 | |
Avi Kivity | 0ee75be | 2010-04-28 15:39:01 +0300 | [diff] [blame] | 4450 | r = kvm_init(&vmx_x86_ops, sizeof(struct vcpu_vmx), |
| 4451 | __alignof__(struct vcpu_vmx), THIS_MODULE); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4452 | if (r) |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 4453 | goto out3; |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 4454 | |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 4455 | vmx_disable_intercept_for_msr(MSR_FS_BASE, false); |
| 4456 | vmx_disable_intercept_for_msr(MSR_GS_BASE, false); |
| 4457 | vmx_disable_intercept_for_msr(MSR_KERNEL_GS_BASE, true); |
| 4458 | vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_CS, false); |
| 4459 | vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_ESP, false); |
| 4460 | vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_EIP, false); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4461 | |
Avi Kivity | 089d034 | 2009-03-23 18:26:32 +0200 | [diff] [blame] | 4462 | if (enable_ept) { |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 4463 | bypass_guest_pf = 0; |
Sheng Yang | 534e38b | 2008-09-08 15:12:30 +0800 | [diff] [blame] | 4464 | kvm_mmu_set_mask_ptes(0ull, 0ull, 0ull, 0ull, |
Sheng Yang | 4b12f0d | 2009-04-27 20:35:42 +0800 | [diff] [blame] | 4465 | VMX_EPT_EXECUTABLE_MASK); |
Sheng Yang | 5fdbcb9 | 2008-07-16 09:25:40 +0800 | [diff] [blame] | 4466 | kvm_enable_tdp(); |
| 4467 | } else |
| 4468 | kvm_disable_tdp(); |
Sheng Yang | 1439442 | 2008-04-28 12:24:45 +0800 | [diff] [blame] | 4469 | |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 4470 | if (bypass_guest_pf) |
| 4471 | kvm_mmu_set_nonpresent_ptes(~0xffeull, 0ull); |
| 4472 | |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4473 | return 0; |
| 4474 | |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 4475 | out3: |
| 4476 | free_page((unsigned long)vmx_msr_bitmap_longmode); |
Sheng Yang | 25c5f22 | 2008-03-28 13:18:56 +0800 | [diff] [blame] | 4477 | out2: |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 4478 | free_page((unsigned long)vmx_msr_bitmap_legacy); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4479 | out1: |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 4480 | free_page((unsigned long)vmx_io_bitmap_b); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4481 | out: |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 4482 | free_page((unsigned long)vmx_io_bitmap_a); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4483 | return r; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4484 | } |
| 4485 | |
| 4486 | static void __exit vmx_exit(void) |
| 4487 | { |
Avi Kivity | 5897297 | 2009-02-24 22:26:47 +0200 | [diff] [blame] | 4488 | free_page((unsigned long)vmx_msr_bitmap_legacy); |
| 4489 | free_page((unsigned long)vmx_msr_bitmap_longmode); |
Avi Kivity | 3e7c73e | 2009-02-24 21:46:19 +0200 | [diff] [blame] | 4490 | free_page((unsigned long)vmx_io_bitmap_b); |
| 4491 | free_page((unsigned long)vmx_io_bitmap_a); |
He, Qing | fdef3ad | 2007-04-30 09:45:24 +0300 | [diff] [blame] | 4492 | |
Zhang Xiantao | cb498ea | 2007-11-14 20:39:31 +0800 | [diff] [blame] | 4493 | kvm_exit(); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 4494 | } |
| 4495 | |
| 4496 | module_init(vmx_init) |
| 4497 | module_exit(vmx_exit) |