Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Kernel-based Virtual Machine driver for Linux |
| 3 | * |
| 4 | * AMD SVM support |
| 5 | * |
| 6 | * Copyright (C) 2006 Qumranet, Inc. |
| 7 | * |
| 8 | * Authors: |
| 9 | * Yaniv Kamay <yaniv@qumranet.com> |
| 10 | * Avi Kivity <avi@qumranet.com> |
| 11 | * |
| 12 | * This work is licensed under the terms of the GNU GPL, version 2. See |
| 13 | * the COPYING file in the top-level directory. |
| 14 | * |
| 15 | */ |
Avi Kivity | edf8841 | 2007-12-16 11:02:48 +0200 | [diff] [blame] | 16 | #include <linux/kvm_host.h> |
| 17 | |
Avi Kivity | e495606 | 2007-06-28 14:15:57 -0400 | [diff] [blame] | 18 | #include "kvm_svm.h" |
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 | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 22 | #include <linux/module.h> |
Ahmed S. Darwish | 9d8f549 | 2007-02-19 14:37:46 +0200 | [diff] [blame] | 23 | #include <linux/kernel.h> |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 24 | #include <linux/vmalloc.h> |
| 25 | #include <linux/highmem.h> |
Alexey Dobriyan | e8edc6e | 2007-05-21 01:22:52 +0400 | [diff] [blame] | 26 | #include <linux/sched.h> |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 27 | |
Avi Kivity | e495606 | 2007-06-28 14:15:57 -0400 | [diff] [blame] | 28 | #include <asm/desc.h> |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 29 | |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 30 | #define __ex(x) __kvm_handle_fault_on_reboot(x) |
| 31 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 32 | MODULE_AUTHOR("Qumranet"); |
| 33 | MODULE_LICENSE("GPL"); |
| 34 | |
| 35 | #define IOPM_ALLOC_ORDER 2 |
| 36 | #define MSRPM_ALLOC_ORDER 1 |
| 37 | |
| 38 | #define DB_VECTOR 1 |
| 39 | #define UD_VECTOR 6 |
| 40 | #define GP_VECTOR 13 |
| 41 | |
| 42 | #define DR7_GD_MASK (1 << 13) |
| 43 | #define DR6_BD_MASK (1 << 13) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 44 | |
| 45 | #define SEG_TYPE_LDT 2 |
| 46 | #define SEG_TYPE_BUSY_TSS16 3 |
| 47 | |
Joerg Roedel | 80b7706 | 2007-03-30 17:02:14 +0300 | [diff] [blame] | 48 | #define SVM_FEATURE_NPT (1 << 0) |
| 49 | #define SVM_FEATURE_LBRV (1 << 1) |
| 50 | #define SVM_DEATURE_SVML (1 << 2) |
| 51 | |
Joerg Roedel | 24e09cb | 2008-02-13 18:58:47 +0100 | [diff] [blame] | 52 | #define DEBUGCTL_RESERVED_BITS (~(0x3fULL)) |
| 53 | |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 54 | /* enable NPT for AMD64 and X86 with PAE */ |
| 55 | #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) |
| 56 | static bool npt_enabled = true; |
| 57 | #else |
Joerg Roedel | e3da3ac | 2008-02-07 13:47:39 +0100 | [diff] [blame] | 58 | static bool npt_enabled = false; |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 59 | #endif |
Joerg Roedel | 6c7dac7 | 2008-02-07 13:47:40 +0100 | [diff] [blame] | 60 | static int npt = 1; |
| 61 | |
| 62 | module_param(npt, int, S_IRUGO); |
Joerg Roedel | e3da3ac | 2008-02-07 13:47:39 +0100 | [diff] [blame] | 63 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 64 | static void kvm_reput_irq(struct vcpu_svm *svm); |
| 65 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 66 | static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu) |
| 67 | { |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 68 | return container_of(vcpu, struct vcpu_svm, vcpu); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 69 | } |
| 70 | |
Harvey Harrison | 4866d5e | 2008-02-19 10:32:02 -0800 | [diff] [blame] | 71 | static unsigned long iopm_base; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 72 | |
| 73 | struct kvm_ldttss_desc { |
| 74 | u16 limit0; |
| 75 | u16 base0; |
| 76 | unsigned base1 : 8, type : 5, dpl : 2, p : 1; |
| 77 | unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8; |
| 78 | u32 base3; |
| 79 | u32 zero1; |
| 80 | } __attribute__((packed)); |
| 81 | |
| 82 | struct svm_cpu_data { |
| 83 | int cpu; |
| 84 | |
Avi Kivity | 5008fdf | 2007-04-02 13:05:50 +0300 | [diff] [blame] | 85 | u64 asid_generation; |
| 86 | u32 max_asid; |
| 87 | u32 next_asid; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 88 | struct kvm_ldttss_desc *tss_desc; |
| 89 | |
| 90 | struct page *save_area; |
| 91 | }; |
| 92 | |
| 93 | static DEFINE_PER_CPU(struct svm_cpu_data *, svm_data); |
Joerg Roedel | 80b7706 | 2007-03-30 17:02:14 +0300 | [diff] [blame] | 94 | static uint32_t svm_features; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 95 | |
| 96 | struct svm_init_data { |
| 97 | int cpu; |
| 98 | int r; |
| 99 | }; |
| 100 | |
| 101 | static u32 msrpm_ranges[] = {0, 0xc0000000, 0xc0010000}; |
| 102 | |
Ahmed S. Darwish | 9d8f549 | 2007-02-19 14:37:46 +0200 | [diff] [blame] | 103 | #define NUM_MSR_MAPS ARRAY_SIZE(msrpm_ranges) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 104 | #define MSRS_RANGE_SIZE 2048 |
| 105 | #define MSRS_IN_RANGE (MSRS_RANGE_SIZE * 8 / 2) |
| 106 | |
| 107 | #define MAX_INST_SIZE 15 |
| 108 | |
Joerg Roedel | 80b7706 | 2007-03-30 17:02:14 +0300 | [diff] [blame] | 109 | static inline u32 svm_has(u32 feat) |
| 110 | { |
| 111 | return svm_features & feat; |
| 112 | } |
| 113 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 114 | static inline u8 pop_irq(struct kvm_vcpu *vcpu) |
| 115 | { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 116 | int word_index = __ffs(vcpu->arch.irq_summary); |
| 117 | int bit_index = __ffs(vcpu->arch.irq_pending[word_index]); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 118 | int irq = word_index * BITS_PER_LONG + bit_index; |
| 119 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 120 | clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]); |
| 121 | if (!vcpu->arch.irq_pending[word_index]) |
| 122 | clear_bit(word_index, &vcpu->arch.irq_summary); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 123 | return irq; |
| 124 | } |
| 125 | |
| 126 | static inline void push_irq(struct kvm_vcpu *vcpu, u8 irq) |
| 127 | { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 128 | set_bit(irq, vcpu->arch.irq_pending); |
| 129 | set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | static inline void clgi(void) |
| 133 | { |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 134 | asm volatile (__ex(SVM_CLGI)); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | static inline void stgi(void) |
| 138 | { |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 139 | asm volatile (__ex(SVM_STGI)); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 140 | } |
| 141 | |
| 142 | static inline void invlpga(unsigned long addr, u32 asid) |
| 143 | { |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 144 | asm volatile (__ex(SVM_INVLPGA) :: "a"(addr), "c"(asid)); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | static inline unsigned long kvm_read_cr2(void) |
| 148 | { |
| 149 | unsigned long cr2; |
| 150 | |
| 151 | asm volatile ("mov %%cr2, %0" : "=r" (cr2)); |
| 152 | return cr2; |
| 153 | } |
| 154 | |
| 155 | static inline void kvm_write_cr2(unsigned long val) |
| 156 | { |
| 157 | asm volatile ("mov %0, %%cr2" :: "r" (val)); |
| 158 | } |
| 159 | |
| 160 | static inline unsigned long read_dr6(void) |
| 161 | { |
| 162 | unsigned long dr6; |
| 163 | |
| 164 | asm volatile ("mov %%dr6, %0" : "=r" (dr6)); |
| 165 | return dr6; |
| 166 | } |
| 167 | |
| 168 | static inline void write_dr6(unsigned long val) |
| 169 | { |
| 170 | asm volatile ("mov %0, %%dr6" :: "r" (val)); |
| 171 | } |
| 172 | |
| 173 | static inline unsigned long read_dr7(void) |
| 174 | { |
| 175 | unsigned long dr7; |
| 176 | |
| 177 | asm volatile ("mov %%dr7, %0" : "=r" (dr7)); |
| 178 | return dr7; |
| 179 | } |
| 180 | |
| 181 | static inline void write_dr7(unsigned long val) |
| 182 | { |
| 183 | asm volatile ("mov %0, %%dr7" :: "r" (val)); |
| 184 | } |
| 185 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 186 | static inline void force_new_asid(struct kvm_vcpu *vcpu) |
| 187 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 188 | to_svm(vcpu)->asid_generation--; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | static inline void flush_guest_tlb(struct kvm_vcpu *vcpu) |
| 192 | { |
| 193 | force_new_asid(vcpu); |
| 194 | } |
| 195 | |
| 196 | static void svm_set_efer(struct kvm_vcpu *vcpu, u64 efer) |
| 197 | { |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 198 | if (!npt_enabled && !(efer & EFER_LMA)) |
Carlo Marcelo Arenas Belon | 2b5203e | 2007-12-01 06:17:11 -0600 | [diff] [blame] | 199 | efer &= ~EFER_LME; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 200 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 201 | to_svm(vcpu)->vmcb->save.efer = efer | MSR_EFER_SVME_MASK; |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 202 | vcpu->arch.shadow_efer = efer; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 203 | } |
| 204 | |
Avi Kivity | 298101d | 2007-11-25 13:41:11 +0200 | [diff] [blame] | 205 | static void svm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr, |
| 206 | bool has_error_code, u32 error_code) |
| 207 | { |
| 208 | struct vcpu_svm *svm = to_svm(vcpu); |
| 209 | |
| 210 | svm->vmcb->control.event_inj = nr |
| 211 | | SVM_EVTINJ_VALID |
| 212 | | (has_error_code ? SVM_EVTINJ_VALID_ERR : 0) |
| 213 | | SVM_EVTINJ_TYPE_EXEPT; |
| 214 | svm->vmcb->control.event_inj_err = error_code; |
| 215 | } |
| 216 | |
| 217 | static bool svm_exception_injected(struct kvm_vcpu *vcpu) |
| 218 | { |
| 219 | struct vcpu_svm *svm = to_svm(vcpu); |
| 220 | |
| 221 | return !(svm->vmcb->control.exit_int_info & SVM_EXITINTINFO_VALID); |
| 222 | } |
| 223 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 224 | static int is_external_interrupt(u32 info) |
| 225 | { |
| 226 | info &= SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID; |
| 227 | return info == (SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR); |
| 228 | } |
| 229 | |
| 230 | static void skip_emulated_instruction(struct kvm_vcpu *vcpu) |
| 231 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 232 | struct vcpu_svm *svm = to_svm(vcpu); |
| 233 | |
| 234 | if (!svm->next_rip) { |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame] | 235 | printk(KERN_DEBUG "%s: NOP\n", __func__); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 236 | return; |
| 237 | } |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 238 | if (svm->next_rip - svm->vmcb->save.rip > MAX_INST_SIZE) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 239 | printk(KERN_ERR "%s: ip 0x%llx next 0x%llx\n", |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame] | 240 | __func__, |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 241 | svm->vmcb->save.rip, |
| 242 | svm->next_rip); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 243 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 244 | vcpu->arch.rip = svm->vmcb->save.rip = svm->next_rip; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 245 | svm->vmcb->control.int_state &= ~SVM_INTERRUPT_SHADOW_MASK; |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 246 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 247 | vcpu->arch.interrupt_window_open = 1; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | static int has_svm(void) |
| 251 | { |
| 252 | uint32_t eax, ebx, ecx, edx; |
| 253 | |
Avi Kivity | 1e88546 | 2006-12-29 16:49:34 -0800 | [diff] [blame] | 254 | if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 255 | printk(KERN_INFO "has_svm: not amd\n"); |
| 256 | return 0; |
| 257 | } |
| 258 | |
| 259 | cpuid(0x80000000, &eax, &ebx, &ecx, &edx); |
| 260 | if (eax < SVM_CPUID_FUNC) { |
| 261 | printk(KERN_INFO "has_svm: can't execute cpuid_8000000a\n"); |
| 262 | return 0; |
| 263 | } |
| 264 | |
| 265 | cpuid(0x80000001, &eax, &ebx, &ecx, &edx); |
| 266 | if (!(ecx & (1 << SVM_CPUID_FEATURE_SHIFT))) { |
| 267 | printk(KERN_DEBUG "has_svm: svm not available\n"); |
| 268 | return 0; |
| 269 | } |
| 270 | return 1; |
| 271 | } |
| 272 | |
| 273 | static void svm_hardware_disable(void *garbage) |
| 274 | { |
Joerg Roedel | 0da1db75 | 2008-07-02 16:02:11 +0200 | [diff] [blame] | 275 | uint64_t efer; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 276 | |
Joerg Roedel | 0da1db75 | 2008-07-02 16:02:11 +0200 | [diff] [blame] | 277 | wrmsrl(MSR_VM_HSAVE_PA, 0); |
| 278 | rdmsrl(MSR_EFER, efer); |
| 279 | wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | static void svm_hardware_enable(void *garbage) |
| 283 | { |
| 284 | |
| 285 | struct svm_cpu_data *svm_data; |
| 286 | uint64_t efer; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 287 | struct desc_ptr gdt_descr; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 288 | struct desc_struct *gdt; |
| 289 | int me = raw_smp_processor_id(); |
| 290 | |
| 291 | if (!has_svm()) { |
| 292 | printk(KERN_ERR "svm_cpu_init: err EOPNOTSUPP on %d\n", me); |
| 293 | return; |
| 294 | } |
| 295 | svm_data = per_cpu(svm_data, me); |
| 296 | |
| 297 | if (!svm_data) { |
| 298 | printk(KERN_ERR "svm_cpu_init: svm_data is NULL on %d\n", |
| 299 | me); |
| 300 | return; |
| 301 | } |
| 302 | |
| 303 | svm_data->asid_generation = 1; |
| 304 | svm_data->max_asid = cpuid_ebx(SVM_CPUID_FUNC) - 1; |
| 305 | svm_data->next_asid = svm_data->max_asid + 1; |
| 306 | |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 307 | asm volatile ("sgdt %0" : "=m"(gdt_descr)); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 308 | gdt = (struct desc_struct *)gdt_descr.address; |
| 309 | svm_data->tss_desc = (struct kvm_ldttss_desc *)(gdt + GDT_ENTRY_TSS); |
| 310 | |
| 311 | rdmsrl(MSR_EFER, efer); |
| 312 | wrmsrl(MSR_EFER, efer | MSR_EFER_SVME_MASK); |
| 313 | |
| 314 | wrmsrl(MSR_VM_HSAVE_PA, |
| 315 | page_to_pfn(svm_data->save_area) << PAGE_SHIFT); |
| 316 | } |
| 317 | |
Joerg Roedel | 0da1db75 | 2008-07-02 16:02:11 +0200 | [diff] [blame] | 318 | static void svm_cpu_uninit(int cpu) |
| 319 | { |
| 320 | struct svm_cpu_data *svm_data |
| 321 | = per_cpu(svm_data, raw_smp_processor_id()); |
| 322 | |
| 323 | if (!svm_data) |
| 324 | return; |
| 325 | |
| 326 | per_cpu(svm_data, raw_smp_processor_id()) = NULL; |
| 327 | __free_page(svm_data->save_area); |
| 328 | kfree(svm_data); |
| 329 | } |
| 330 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 331 | static int svm_cpu_init(int cpu) |
| 332 | { |
| 333 | struct svm_cpu_data *svm_data; |
| 334 | int r; |
| 335 | |
| 336 | svm_data = kzalloc(sizeof(struct svm_cpu_data), GFP_KERNEL); |
| 337 | if (!svm_data) |
| 338 | return -ENOMEM; |
| 339 | svm_data->cpu = cpu; |
| 340 | svm_data->save_area = alloc_page(GFP_KERNEL); |
| 341 | r = -ENOMEM; |
| 342 | if (!svm_data->save_area) |
| 343 | goto err_1; |
| 344 | |
| 345 | per_cpu(svm_data, cpu) = svm_data; |
| 346 | |
| 347 | return 0; |
| 348 | |
| 349 | err_1: |
| 350 | kfree(svm_data); |
| 351 | return r; |
| 352 | |
| 353 | } |
| 354 | |
Rusty Russell | bfc733a | 2007-07-31 20:42:42 +1000 | [diff] [blame] | 355 | static void set_msr_interception(u32 *msrpm, unsigned msr, |
| 356 | int read, int write) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 357 | { |
| 358 | int i; |
| 359 | |
| 360 | for (i = 0; i < NUM_MSR_MAPS; i++) { |
| 361 | if (msr >= msrpm_ranges[i] && |
| 362 | msr < msrpm_ranges[i] + MSRS_IN_RANGE) { |
| 363 | u32 msr_offset = (i * MSRS_IN_RANGE + msr - |
| 364 | msrpm_ranges[i]) * 2; |
| 365 | |
| 366 | u32 *base = msrpm + (msr_offset / 32); |
| 367 | u32 msr_shift = msr_offset % 32; |
| 368 | u32 mask = ((write) ? 0 : 2) | ((read) ? 0 : 1); |
| 369 | *base = (*base & ~(0x3 << msr_shift)) | |
| 370 | (mask << msr_shift); |
Rusty Russell | bfc733a | 2007-07-31 20:42:42 +1000 | [diff] [blame] | 371 | return; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 372 | } |
| 373 | } |
Rusty Russell | bfc733a | 2007-07-31 20:42:42 +1000 | [diff] [blame] | 374 | BUG(); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 375 | } |
| 376 | |
Joerg Roedel | f65c229 | 2008-02-13 18:58:46 +0100 | [diff] [blame] | 377 | static void svm_vcpu_init_msrpm(u32 *msrpm) |
| 378 | { |
| 379 | memset(msrpm, 0xff, PAGE_SIZE * (1 << MSRPM_ALLOC_ORDER)); |
| 380 | |
| 381 | #ifdef CONFIG_X86_64 |
| 382 | set_msr_interception(msrpm, MSR_GS_BASE, 1, 1); |
| 383 | set_msr_interception(msrpm, MSR_FS_BASE, 1, 1); |
| 384 | set_msr_interception(msrpm, MSR_KERNEL_GS_BASE, 1, 1); |
| 385 | set_msr_interception(msrpm, MSR_LSTAR, 1, 1); |
| 386 | set_msr_interception(msrpm, MSR_CSTAR, 1, 1); |
| 387 | set_msr_interception(msrpm, MSR_SYSCALL_MASK, 1, 1); |
| 388 | #endif |
| 389 | set_msr_interception(msrpm, MSR_K6_STAR, 1, 1); |
| 390 | set_msr_interception(msrpm, MSR_IA32_SYSENTER_CS, 1, 1); |
| 391 | set_msr_interception(msrpm, MSR_IA32_SYSENTER_ESP, 1, 1); |
| 392 | set_msr_interception(msrpm, MSR_IA32_SYSENTER_EIP, 1, 1); |
| 393 | } |
| 394 | |
Joerg Roedel | 24e09cb | 2008-02-13 18:58:47 +0100 | [diff] [blame] | 395 | static void svm_enable_lbrv(struct vcpu_svm *svm) |
| 396 | { |
| 397 | u32 *msrpm = svm->msrpm; |
| 398 | |
| 399 | svm->vmcb->control.lbr_ctl = 1; |
| 400 | set_msr_interception(msrpm, MSR_IA32_LASTBRANCHFROMIP, 1, 1); |
| 401 | set_msr_interception(msrpm, MSR_IA32_LASTBRANCHTOIP, 1, 1); |
| 402 | set_msr_interception(msrpm, MSR_IA32_LASTINTFROMIP, 1, 1); |
| 403 | set_msr_interception(msrpm, MSR_IA32_LASTINTTOIP, 1, 1); |
| 404 | } |
| 405 | |
| 406 | static void svm_disable_lbrv(struct vcpu_svm *svm) |
| 407 | { |
| 408 | u32 *msrpm = svm->msrpm; |
| 409 | |
| 410 | svm->vmcb->control.lbr_ctl = 0; |
| 411 | set_msr_interception(msrpm, MSR_IA32_LASTBRANCHFROMIP, 0, 0); |
| 412 | set_msr_interception(msrpm, MSR_IA32_LASTBRANCHTOIP, 0, 0); |
| 413 | set_msr_interception(msrpm, MSR_IA32_LASTINTFROMIP, 0, 0); |
| 414 | set_msr_interception(msrpm, MSR_IA32_LASTINTTOIP, 0, 0); |
| 415 | } |
| 416 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 417 | static __init int svm_hardware_setup(void) |
| 418 | { |
| 419 | int cpu; |
| 420 | struct page *iopm_pages; |
Joerg Roedel | f65c229 | 2008-02-13 18:58:46 +0100 | [diff] [blame] | 421 | void *iopm_va; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 422 | int r; |
| 423 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 424 | iopm_pages = alloc_pages(GFP_KERNEL, IOPM_ALLOC_ORDER); |
| 425 | |
| 426 | if (!iopm_pages) |
| 427 | return -ENOMEM; |
Anthony Liguori | c868133 | 2007-04-30 09:48:11 +0300 | [diff] [blame] | 428 | |
| 429 | iopm_va = page_address(iopm_pages); |
| 430 | memset(iopm_va, 0xff, PAGE_SIZE * (1 << IOPM_ALLOC_ORDER)); |
| 431 | clear_bit(0x80, iopm_va); /* allow direct access to PC debug port */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 432 | iopm_base = page_to_pfn(iopm_pages) << PAGE_SHIFT; |
| 433 | |
Joerg Roedel | 50a37eb | 2008-01-31 14:57:38 +0100 | [diff] [blame] | 434 | if (boot_cpu_has(X86_FEATURE_NX)) |
| 435 | kvm_enable_efer_bits(EFER_NX); |
| 436 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 437 | for_each_online_cpu(cpu) { |
| 438 | r = svm_cpu_init(cpu); |
| 439 | if (r) |
Joerg Roedel | f65c229 | 2008-02-13 18:58:46 +0100 | [diff] [blame] | 440 | goto err; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 441 | } |
Joerg Roedel | 33bd6a0 | 2008-02-07 13:47:38 +0100 | [diff] [blame] | 442 | |
| 443 | svm_features = cpuid_edx(SVM_CPUID_FUNC); |
| 444 | |
Joerg Roedel | e3da3ac | 2008-02-07 13:47:39 +0100 | [diff] [blame] | 445 | if (!svm_has(SVM_FEATURE_NPT)) |
| 446 | npt_enabled = false; |
| 447 | |
Joerg Roedel | 6c7dac7 | 2008-02-07 13:47:40 +0100 | [diff] [blame] | 448 | if (npt_enabled && !npt) { |
| 449 | printk(KERN_INFO "kvm: Nested Paging disabled\n"); |
| 450 | npt_enabled = false; |
| 451 | } |
| 452 | |
Joerg Roedel | 1855267 | 2008-02-07 13:47:41 +0100 | [diff] [blame] | 453 | if (npt_enabled) { |
Joerg Roedel | e3da3ac | 2008-02-07 13:47:39 +0100 | [diff] [blame] | 454 | printk(KERN_INFO "kvm: Nested Paging enabled\n"); |
Joerg Roedel | 1855267 | 2008-02-07 13:47:41 +0100 | [diff] [blame] | 455 | kvm_enable_tdp(); |
Joerg Roedel | 5f4cb66 | 2008-07-14 20:36:36 +0200 | [diff] [blame] | 456 | } else |
| 457 | kvm_disable_tdp(); |
Joerg Roedel | e3da3ac | 2008-02-07 13:47:39 +0100 | [diff] [blame] | 458 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 459 | return 0; |
| 460 | |
Joerg Roedel | f65c229 | 2008-02-13 18:58:46 +0100 | [diff] [blame] | 461 | err: |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 462 | __free_pages(iopm_pages, IOPM_ALLOC_ORDER); |
| 463 | iopm_base = 0; |
| 464 | return r; |
| 465 | } |
| 466 | |
| 467 | static __exit void svm_hardware_unsetup(void) |
| 468 | { |
Joerg Roedel | 0da1db75 | 2008-07-02 16:02:11 +0200 | [diff] [blame] | 469 | int cpu; |
| 470 | |
| 471 | for_each_online_cpu(cpu) |
| 472 | svm_cpu_uninit(cpu); |
| 473 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 474 | __free_pages(pfn_to_page(iopm_base >> PAGE_SHIFT), IOPM_ALLOC_ORDER); |
Joerg Roedel | f65c229 | 2008-02-13 18:58:46 +0100 | [diff] [blame] | 475 | iopm_base = 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | static void init_seg(struct vmcb_seg *seg) |
| 479 | { |
| 480 | seg->selector = 0; |
| 481 | seg->attrib = SVM_SELECTOR_P_MASK | SVM_SELECTOR_S_MASK | |
| 482 | SVM_SELECTOR_WRITE_MASK; /* Read/Write Data Segment */ |
| 483 | seg->limit = 0xffff; |
| 484 | seg->base = 0; |
| 485 | } |
| 486 | |
| 487 | static void init_sys_seg(struct vmcb_seg *seg, uint32_t type) |
| 488 | { |
| 489 | seg->selector = 0; |
| 490 | seg->attrib = SVM_SELECTOR_P_MASK | type; |
| 491 | seg->limit = 0xffff; |
| 492 | seg->base = 0; |
| 493 | } |
| 494 | |
Joerg Roedel | e6101a9 | 2008-02-13 18:58:45 +0100 | [diff] [blame] | 495 | static void init_vmcb(struct vcpu_svm *svm) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 496 | { |
Joerg Roedel | e6101a9 | 2008-02-13 18:58:45 +0100 | [diff] [blame] | 497 | struct vmcb_control_area *control = &svm->vmcb->control; |
| 498 | struct vmcb_save_area *save = &svm->vmcb->save; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 499 | |
| 500 | control->intercept_cr_read = INTERCEPT_CR0_MASK | |
| 501 | INTERCEPT_CR3_MASK | |
Joerg Roedel | 649d686 | 2008-04-16 16:51:15 +0200 | [diff] [blame] | 502 | INTERCEPT_CR4_MASK; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 503 | |
| 504 | control->intercept_cr_write = INTERCEPT_CR0_MASK | |
| 505 | INTERCEPT_CR3_MASK | |
Avi Kivity | 80a8119 | 2007-12-06 19:50:00 +0200 | [diff] [blame] | 506 | INTERCEPT_CR4_MASK | |
| 507 | INTERCEPT_CR8_MASK; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 508 | |
| 509 | control->intercept_dr_read = INTERCEPT_DR0_MASK | |
| 510 | INTERCEPT_DR1_MASK | |
| 511 | INTERCEPT_DR2_MASK | |
| 512 | INTERCEPT_DR3_MASK; |
| 513 | |
| 514 | control->intercept_dr_write = INTERCEPT_DR0_MASK | |
| 515 | INTERCEPT_DR1_MASK | |
| 516 | INTERCEPT_DR2_MASK | |
| 517 | INTERCEPT_DR3_MASK | |
| 518 | INTERCEPT_DR5_MASK | |
| 519 | INTERCEPT_DR7_MASK; |
| 520 | |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 521 | control->intercept_exceptions = (1 << PF_VECTOR) | |
Joerg Roedel | 53371b5 | 2008-04-09 14:15:30 +0200 | [diff] [blame] | 522 | (1 << UD_VECTOR) | |
| 523 | (1 << MC_VECTOR); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 524 | |
| 525 | |
| 526 | control->intercept = (1ULL << INTERCEPT_INTR) | |
| 527 | (1ULL << INTERCEPT_NMI) | |
Joerg Roedel | 0152527 | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 528 | (1ULL << INTERCEPT_SMI) | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 529 | (1ULL << INTERCEPT_CPUID) | |
Avi Kivity | cf5a94d | 2007-10-28 16:11:58 +0200 | [diff] [blame] | 530 | (1ULL << INTERCEPT_INVD) | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 531 | (1ULL << INTERCEPT_HLT) | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 532 | (1ULL << INTERCEPT_INVLPGA) | |
| 533 | (1ULL << INTERCEPT_IOIO_PROT) | |
| 534 | (1ULL << INTERCEPT_MSR_PROT) | |
| 535 | (1ULL << INTERCEPT_TASK_SWITCH) | |
Joerg Roedel | 46fe4dd | 2007-01-26 00:56:42 -0800 | [diff] [blame] | 536 | (1ULL << INTERCEPT_SHUTDOWN) | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 537 | (1ULL << INTERCEPT_VMRUN) | |
| 538 | (1ULL << INTERCEPT_VMMCALL) | |
| 539 | (1ULL << INTERCEPT_VMLOAD) | |
| 540 | (1ULL << INTERCEPT_VMSAVE) | |
| 541 | (1ULL << INTERCEPT_STGI) | |
| 542 | (1ULL << INTERCEPT_CLGI) | |
Joerg Roedel | 916ce23 | 2007-03-21 19:47:00 +0100 | [diff] [blame] | 543 | (1ULL << INTERCEPT_SKINIT) | |
Avi Kivity | cf5a94d | 2007-10-28 16:11:58 +0200 | [diff] [blame] | 544 | (1ULL << INTERCEPT_WBINVD) | |
Joerg Roedel | 916ce23 | 2007-03-21 19:47:00 +0100 | [diff] [blame] | 545 | (1ULL << INTERCEPT_MONITOR) | |
| 546 | (1ULL << INTERCEPT_MWAIT); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 547 | |
| 548 | control->iopm_base_pa = iopm_base; |
Joerg Roedel | f65c229 | 2008-02-13 18:58:46 +0100 | [diff] [blame] | 549 | control->msrpm_base_pa = __pa(svm->msrpm); |
Avi Kivity | 0cc5064 | 2007-03-25 12:07:27 +0200 | [diff] [blame] | 550 | control->tsc_offset = 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 551 | control->int_ctl = V_INTR_MASKING_MASK; |
| 552 | |
| 553 | init_seg(&save->es); |
| 554 | init_seg(&save->ss); |
| 555 | init_seg(&save->ds); |
| 556 | init_seg(&save->fs); |
| 557 | init_seg(&save->gs); |
| 558 | |
| 559 | save->cs.selector = 0xf000; |
| 560 | /* Executable/Readable Code Segment */ |
| 561 | save->cs.attrib = SVM_SELECTOR_READ_MASK | SVM_SELECTOR_P_MASK | |
| 562 | SVM_SELECTOR_S_MASK | SVM_SELECTOR_CODE_MASK; |
| 563 | save->cs.limit = 0xffff; |
Avi Kivity | d92899a | 2007-02-12 00:54:38 -0800 | [diff] [blame] | 564 | /* |
| 565 | * cs.base should really be 0xffff0000, but vmx can't handle that, so |
| 566 | * be consistent with it. |
| 567 | * |
| 568 | * Replace when we have real mode working for vmx. |
| 569 | */ |
| 570 | save->cs.base = 0xf0000; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 571 | |
| 572 | save->gdtr.limit = 0xffff; |
| 573 | save->idtr.limit = 0xffff; |
| 574 | |
| 575 | init_sys_seg(&save->ldtr, SEG_TYPE_LDT); |
| 576 | init_sys_seg(&save->tr, SEG_TYPE_BUSY_TSS16); |
| 577 | |
| 578 | save->efer = MSR_EFER_SVME_MASK; |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 579 | save->dr6 = 0xffff0ff0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 580 | save->dr7 = 0x400; |
| 581 | save->rflags = 2; |
| 582 | save->rip = 0x0000fff0; |
| 583 | |
| 584 | /* |
| 585 | * cr0 val on cpu init should be 0x60000010, we enable cpu |
| 586 | * cache by default. the orderly way is to enable cache in bios. |
| 587 | */ |
Rusty Russell | 707d92fa | 2007-07-17 23:19:08 +1000 | [diff] [blame] | 588 | save->cr0 = 0x00000010 | X86_CR0_PG | X86_CR0_WP; |
Rusty Russell | 66aee91 | 2007-07-17 23:34:16 +1000 | [diff] [blame] | 589 | save->cr4 = X86_CR4_PAE; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 590 | /* rdx = ?? */ |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 591 | |
| 592 | if (npt_enabled) { |
| 593 | /* Setup VMCB for Nested Paging */ |
| 594 | control->nested_ctl = 1; |
Joerg Roedel | 3564990 | 2008-04-09 16:04:32 +0200 | [diff] [blame] | 595 | control->intercept &= ~(1ULL << INTERCEPT_TASK_SWITCH); |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 596 | control->intercept_exceptions &= ~(1 << PF_VECTOR); |
| 597 | control->intercept_cr_read &= ~(INTERCEPT_CR0_MASK| |
| 598 | INTERCEPT_CR3_MASK); |
| 599 | control->intercept_cr_write &= ~(INTERCEPT_CR0_MASK| |
| 600 | INTERCEPT_CR3_MASK); |
| 601 | save->g_pat = 0x0007040600070406ULL; |
| 602 | /* enable caching because the QEMU Bios doesn't enable it */ |
| 603 | save->cr0 = X86_CR0_ET; |
| 604 | save->cr3 = 0; |
| 605 | save->cr4 = 0; |
| 606 | } |
Avi Kivity | a79d2f1 | 2008-04-14 13:10:21 +0300 | [diff] [blame] | 607 | force_new_asid(&svm->vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 608 | } |
| 609 | |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 610 | static int svm_vcpu_reset(struct kvm_vcpu *vcpu) |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 611 | { |
| 612 | struct vcpu_svm *svm = to_svm(vcpu); |
| 613 | |
Joerg Roedel | e6101a9 | 2008-02-13 18:58:45 +0100 | [diff] [blame] | 614 | init_vmcb(svm); |
Avi Kivity | 7043338 | 2007-11-07 12:57:23 +0200 | [diff] [blame] | 615 | |
| 616 | if (vcpu->vcpu_id != 0) { |
| 617 | svm->vmcb->save.rip = 0; |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 618 | svm->vmcb->save.cs.base = svm->vcpu.arch.sipi_vector << 12; |
| 619 | svm->vmcb->save.cs.selector = svm->vcpu.arch.sipi_vector << 8; |
Avi Kivity | 7043338 | 2007-11-07 12:57:23 +0200 | [diff] [blame] | 620 | } |
Avi Kivity | e00c8cf | 2007-10-21 11:00:39 +0200 | [diff] [blame] | 621 | |
| 622 | return 0; |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 623 | } |
| 624 | |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 625 | static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 626 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 627 | struct vcpu_svm *svm; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 628 | struct page *page; |
Joerg Roedel | f65c229 | 2008-02-13 18:58:46 +0100 | [diff] [blame] | 629 | struct page *msrpm_pages; |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 630 | int err; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 631 | |
Rusty Russell | c16f862 | 2007-07-30 21:12:19 +1000 | [diff] [blame] | 632 | svm = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 633 | if (!svm) { |
| 634 | err = -ENOMEM; |
| 635 | goto out; |
| 636 | } |
| 637 | |
| 638 | err = kvm_vcpu_init(&svm->vcpu, kvm, id); |
| 639 | if (err) |
| 640 | goto free_svm; |
| 641 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 642 | page = alloc_page(GFP_KERNEL); |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 643 | if (!page) { |
| 644 | err = -ENOMEM; |
| 645 | goto uninit; |
| 646 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 647 | |
Joerg Roedel | f65c229 | 2008-02-13 18:58:46 +0100 | [diff] [blame] | 648 | err = -ENOMEM; |
| 649 | msrpm_pages = alloc_pages(GFP_KERNEL, MSRPM_ALLOC_ORDER); |
| 650 | if (!msrpm_pages) |
| 651 | goto uninit; |
| 652 | svm->msrpm = page_address(msrpm_pages); |
| 653 | svm_vcpu_init_msrpm(svm->msrpm); |
| 654 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 655 | svm->vmcb = page_address(page); |
| 656 | clear_page(svm->vmcb); |
| 657 | svm->vmcb_pa = page_to_pfn(page) << PAGE_SHIFT; |
| 658 | svm->asid_generation = 0; |
| 659 | memset(svm->db_regs, 0, sizeof(svm->db_regs)); |
Joerg Roedel | e6101a9 | 2008-02-13 18:58:45 +0100 | [diff] [blame] | 660 | init_vmcb(svm); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 661 | |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 662 | fx_init(&svm->vcpu); |
| 663 | svm->vcpu.fpu_active = 1; |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 664 | svm->vcpu.arch.apic_base = 0xfee00000 | MSR_IA32_APICBASE_ENABLE; |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 665 | if (svm->vcpu.vcpu_id == 0) |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 666 | svm->vcpu.arch.apic_base |= MSR_IA32_APICBASE_BSP; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 667 | |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 668 | return &svm->vcpu; |
Avi Kivity | 36241b8 | 2006-12-22 01:05:20 -0800 | [diff] [blame] | 669 | |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 670 | uninit: |
| 671 | kvm_vcpu_uninit(&svm->vcpu); |
| 672 | free_svm: |
Rusty Russell | a477034 | 2007-08-01 14:46:11 +1000 | [diff] [blame] | 673 | kmem_cache_free(kvm_vcpu_cache, svm); |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 674 | out: |
| 675 | return ERR_PTR(err); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 676 | } |
| 677 | |
| 678 | static void svm_free_vcpu(struct kvm_vcpu *vcpu) |
| 679 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 680 | struct vcpu_svm *svm = to_svm(vcpu); |
| 681 | |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 682 | __free_page(pfn_to_page(svm->vmcb_pa >> PAGE_SHIFT)); |
Joerg Roedel | f65c229 | 2008-02-13 18:58:46 +0100 | [diff] [blame] | 683 | __free_pages(virt_to_page(svm->msrpm), MSRPM_ALLOC_ORDER); |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 684 | kvm_vcpu_uninit(vcpu); |
Rusty Russell | a477034 | 2007-08-01 14:46:11 +1000 | [diff] [blame] | 685 | kmem_cache_free(kvm_vcpu_cache, svm); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 686 | } |
| 687 | |
Avi Kivity | 15ad714 | 2007-07-11 18:17:21 +0300 | [diff] [blame] | 688 | static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 689 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 690 | struct vcpu_svm *svm = to_svm(vcpu); |
Avi Kivity | 15ad714 | 2007-07-11 18:17:21 +0300 | [diff] [blame] | 691 | int i; |
Avi Kivity | 0cc5064 | 2007-03-25 12:07:27 +0200 | [diff] [blame] | 692 | |
Avi Kivity | 0cc5064 | 2007-03-25 12:07:27 +0200 | [diff] [blame] | 693 | if (unlikely(cpu != vcpu->cpu)) { |
| 694 | u64 tsc_this, delta; |
| 695 | |
| 696 | /* |
| 697 | * Make sure that the guest sees a monotonically |
| 698 | * increasing TSC. |
| 699 | */ |
| 700 | rdtscll(tsc_this); |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 701 | delta = vcpu->arch.host_tsc - tsc_this; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 702 | svm->vmcb->control.tsc_offset += delta; |
Avi Kivity | 0cc5064 | 2007-03-25 12:07:27 +0200 | [diff] [blame] | 703 | vcpu->cpu = cpu; |
Marcelo Tosatti | 2f59971 | 2008-05-27 12:10:20 -0300 | [diff] [blame] | 704 | kvm_migrate_timers(vcpu); |
Avi Kivity | 0cc5064 | 2007-03-25 12:07:27 +0200 | [diff] [blame] | 705 | } |
Anthony Liguori | 94dfbdb | 2007-04-29 11:56:06 +0300 | [diff] [blame] | 706 | |
| 707 | for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++) |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 708 | rdmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 709 | } |
| 710 | |
| 711 | static void svm_vcpu_put(struct kvm_vcpu *vcpu) |
| 712 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 713 | struct vcpu_svm *svm = to_svm(vcpu); |
Anthony Liguori | 94dfbdb | 2007-04-29 11:56:06 +0300 | [diff] [blame] | 714 | int i; |
| 715 | |
Avi Kivity | e1beb1d | 2007-11-18 13:50:24 +0200 | [diff] [blame] | 716 | ++vcpu->stat.host_state_reload; |
Anthony Liguori | 94dfbdb | 2007-04-29 11:56:06 +0300 | [diff] [blame] | 717 | for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++) |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 718 | wrmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]); |
Anthony Liguori | 94dfbdb | 2007-04-29 11:56:06 +0300 | [diff] [blame] | 719 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 720 | rdtscll(vcpu->arch.host_tsc); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 721 | } |
| 722 | |
| 723 | static void svm_cache_regs(struct kvm_vcpu *vcpu) |
| 724 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 725 | struct vcpu_svm *svm = to_svm(vcpu); |
| 726 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 727 | vcpu->arch.regs[VCPU_REGS_RAX] = svm->vmcb->save.rax; |
| 728 | vcpu->arch.regs[VCPU_REGS_RSP] = svm->vmcb->save.rsp; |
| 729 | vcpu->arch.rip = svm->vmcb->save.rip; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 730 | } |
| 731 | |
| 732 | static void svm_decache_regs(struct kvm_vcpu *vcpu) |
| 733 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 734 | struct vcpu_svm *svm = to_svm(vcpu); |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 735 | svm->vmcb->save.rax = vcpu->arch.regs[VCPU_REGS_RAX]; |
| 736 | svm->vmcb->save.rsp = vcpu->arch.regs[VCPU_REGS_RSP]; |
| 737 | svm->vmcb->save.rip = vcpu->arch.rip; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 738 | } |
| 739 | |
| 740 | static unsigned long svm_get_rflags(struct kvm_vcpu *vcpu) |
| 741 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 742 | return to_svm(vcpu)->vmcb->save.rflags; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | static void svm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags) |
| 746 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 747 | to_svm(vcpu)->vmcb->save.rflags = rflags; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 748 | } |
| 749 | |
| 750 | static struct vmcb_seg *svm_seg(struct kvm_vcpu *vcpu, int seg) |
| 751 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 752 | struct vmcb_save_area *save = &to_svm(vcpu)->vmcb->save; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 753 | |
| 754 | switch (seg) { |
| 755 | case VCPU_SREG_CS: return &save->cs; |
| 756 | case VCPU_SREG_DS: return &save->ds; |
| 757 | case VCPU_SREG_ES: return &save->es; |
| 758 | case VCPU_SREG_FS: return &save->fs; |
| 759 | case VCPU_SREG_GS: return &save->gs; |
| 760 | case VCPU_SREG_SS: return &save->ss; |
| 761 | case VCPU_SREG_TR: return &save->tr; |
| 762 | case VCPU_SREG_LDTR: return &save->ldtr; |
| 763 | } |
| 764 | BUG(); |
Al Viro | 8b6d44c | 2007-02-09 16:38:40 +0000 | [diff] [blame] | 765 | return NULL; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | static u64 svm_get_segment_base(struct kvm_vcpu *vcpu, int seg) |
| 769 | { |
| 770 | struct vmcb_seg *s = svm_seg(vcpu, seg); |
| 771 | |
| 772 | return s->base; |
| 773 | } |
| 774 | |
| 775 | static void svm_get_segment(struct kvm_vcpu *vcpu, |
| 776 | struct kvm_segment *var, int seg) |
| 777 | { |
| 778 | struct vmcb_seg *s = svm_seg(vcpu, seg); |
| 779 | |
| 780 | var->base = s->base; |
| 781 | var->limit = s->limit; |
| 782 | var->selector = s->selector; |
| 783 | var->type = s->attrib & SVM_SELECTOR_TYPE_MASK; |
| 784 | var->s = (s->attrib >> SVM_SELECTOR_S_SHIFT) & 1; |
| 785 | var->dpl = (s->attrib >> SVM_SELECTOR_DPL_SHIFT) & 3; |
| 786 | var->present = (s->attrib >> SVM_SELECTOR_P_SHIFT) & 1; |
| 787 | var->avl = (s->attrib >> SVM_SELECTOR_AVL_SHIFT) & 1; |
| 788 | var->l = (s->attrib >> SVM_SELECTOR_L_SHIFT) & 1; |
| 789 | var->db = (s->attrib >> SVM_SELECTOR_DB_SHIFT) & 1; |
| 790 | var->g = (s->attrib >> SVM_SELECTOR_G_SHIFT) & 1; |
| 791 | var->unusable = !var->present; |
| 792 | } |
| 793 | |
Izik Eidus | 2e4d265 | 2008-03-24 19:38:34 +0200 | [diff] [blame] | 794 | static int svm_get_cpl(struct kvm_vcpu *vcpu) |
| 795 | { |
| 796 | struct vmcb_save_area *save = &to_svm(vcpu)->vmcb->save; |
| 797 | |
| 798 | return save->cpl; |
| 799 | } |
| 800 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 801 | static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) |
| 802 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 803 | struct vcpu_svm *svm = to_svm(vcpu); |
| 804 | |
| 805 | dt->limit = svm->vmcb->save.idtr.limit; |
| 806 | dt->base = svm->vmcb->save.idtr.base; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 807 | } |
| 808 | |
| 809 | static void svm_set_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) |
| 810 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 811 | struct vcpu_svm *svm = to_svm(vcpu); |
| 812 | |
| 813 | svm->vmcb->save.idtr.limit = dt->limit; |
| 814 | svm->vmcb->save.idtr.base = dt->base ; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 815 | } |
| 816 | |
| 817 | static void svm_get_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) |
| 818 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 819 | struct vcpu_svm *svm = to_svm(vcpu); |
| 820 | |
| 821 | dt->limit = svm->vmcb->save.gdtr.limit; |
| 822 | dt->base = svm->vmcb->save.gdtr.base; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 823 | } |
| 824 | |
| 825 | static void svm_set_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) |
| 826 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 827 | struct vcpu_svm *svm = to_svm(vcpu); |
| 828 | |
| 829 | svm->vmcb->save.gdtr.limit = dt->limit; |
| 830 | svm->vmcb->save.gdtr.base = dt->base ; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 831 | } |
| 832 | |
Anthony Liguori | 25c4c27 | 2007-04-27 09:29:21 +0300 | [diff] [blame] | 833 | static void svm_decache_cr4_guest_bits(struct kvm_vcpu *vcpu) |
Avi Kivity | 399badf | 2007-01-05 16:36:38 -0800 | [diff] [blame] | 834 | { |
| 835 | } |
| 836 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 837 | static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0) |
| 838 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 839 | struct vcpu_svm *svm = to_svm(vcpu); |
| 840 | |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 841 | #ifdef CONFIG_X86_64 |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 842 | if (vcpu->arch.shadow_efer & EFER_LME) { |
Rusty Russell | 707d92fa | 2007-07-17 23:19:08 +1000 | [diff] [blame] | 843 | if (!is_paging(vcpu) && (cr0 & X86_CR0_PG)) { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 844 | vcpu->arch.shadow_efer |= EFER_LMA; |
Carlo Marcelo Arenas Belon | 2b5203e | 2007-12-01 06:17:11 -0600 | [diff] [blame] | 845 | svm->vmcb->save.efer |= EFER_LMA | EFER_LME; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 846 | } |
| 847 | |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 848 | if (is_paging(vcpu) && !(cr0 & X86_CR0_PG)) { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 849 | vcpu->arch.shadow_efer &= ~EFER_LMA; |
Carlo Marcelo Arenas Belon | 2b5203e | 2007-12-01 06:17:11 -0600 | [diff] [blame] | 850 | svm->vmcb->save.efer &= ~(EFER_LMA | EFER_LME); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 851 | } |
| 852 | } |
| 853 | #endif |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 854 | if (npt_enabled) |
| 855 | goto set; |
| 856 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 857 | if ((vcpu->arch.cr0 & X86_CR0_TS) && !(cr0 & X86_CR0_TS)) { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 858 | svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR); |
Anthony Liguori | 7807fa6 | 2007-04-23 09:17:21 -0500 | [diff] [blame] | 859 | vcpu->fpu_active = 1; |
| 860 | } |
| 861 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 862 | vcpu->arch.cr0 = cr0; |
Rusty Russell | 707d92fa | 2007-07-17 23:19:08 +1000 | [diff] [blame] | 863 | cr0 |= X86_CR0_PG | X86_CR0_WP; |
Joerg Roedel | 6b390b6 | 2008-01-29 13:01:27 +0100 | [diff] [blame] | 864 | if (!vcpu->fpu_active) { |
| 865 | svm->vmcb->control.intercept_exceptions |= (1 << NM_VECTOR); |
Joerg Roedel | 334df50 | 2008-01-21 13:09:33 +0100 | [diff] [blame] | 866 | cr0 |= X86_CR0_TS; |
Joerg Roedel | 6b390b6 | 2008-01-29 13:01:27 +0100 | [diff] [blame] | 867 | } |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 868 | set: |
| 869 | /* |
| 870 | * re-enable caching here because the QEMU bios |
| 871 | * does not do it - this results in some delay at |
| 872 | * reboot |
| 873 | */ |
| 874 | cr0 &= ~(X86_CR0_CD | X86_CR0_NW); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 875 | svm->vmcb->save.cr0 = cr0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 876 | } |
| 877 | |
| 878 | static void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4) |
| 879 | { |
Joerg Roedel | 6394b64 | 2008-04-09 14:15:29 +0200 | [diff] [blame] | 880 | unsigned long host_cr4_mce = read_cr4() & X86_CR4_MCE; |
| 881 | |
Joerg Roedel | ec07726 | 2008-04-09 14:15:28 +0200 | [diff] [blame] | 882 | vcpu->arch.cr4 = cr4; |
| 883 | if (!npt_enabled) |
| 884 | cr4 |= X86_CR4_PAE; |
Joerg Roedel | 6394b64 | 2008-04-09 14:15:29 +0200 | [diff] [blame] | 885 | cr4 |= host_cr4_mce; |
Joerg Roedel | ec07726 | 2008-04-09 14:15:28 +0200 | [diff] [blame] | 886 | to_svm(vcpu)->vmcb->save.cr4 = cr4; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 887 | } |
| 888 | |
| 889 | static void svm_set_segment(struct kvm_vcpu *vcpu, |
| 890 | struct kvm_segment *var, int seg) |
| 891 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 892 | struct vcpu_svm *svm = to_svm(vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 893 | struct vmcb_seg *s = svm_seg(vcpu, seg); |
| 894 | |
| 895 | s->base = var->base; |
| 896 | s->limit = var->limit; |
| 897 | s->selector = var->selector; |
| 898 | if (var->unusable) |
| 899 | s->attrib = 0; |
| 900 | else { |
| 901 | s->attrib = (var->type & SVM_SELECTOR_TYPE_MASK); |
| 902 | s->attrib |= (var->s & 1) << SVM_SELECTOR_S_SHIFT; |
| 903 | s->attrib |= (var->dpl & 3) << SVM_SELECTOR_DPL_SHIFT; |
| 904 | s->attrib |= (var->present & 1) << SVM_SELECTOR_P_SHIFT; |
| 905 | s->attrib |= (var->avl & 1) << SVM_SELECTOR_AVL_SHIFT; |
| 906 | s->attrib |= (var->l & 1) << SVM_SELECTOR_L_SHIFT; |
| 907 | s->attrib |= (var->db & 1) << SVM_SELECTOR_DB_SHIFT; |
| 908 | s->attrib |= (var->g & 1) << SVM_SELECTOR_G_SHIFT; |
| 909 | } |
| 910 | if (seg == VCPU_SREG_CS) |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 911 | svm->vmcb->save.cpl |
| 912 | = (svm->vmcb->save.cs.attrib |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 913 | >> SVM_SELECTOR_DPL_SHIFT) & 3; |
| 914 | |
| 915 | } |
| 916 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 917 | static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_debug_guest *dbg) |
| 918 | { |
| 919 | return -EOPNOTSUPP; |
| 920 | } |
| 921 | |
Eddie Dong | 2a8067f | 2007-08-06 16:29:07 +0300 | [diff] [blame] | 922 | static int svm_get_irq(struct kvm_vcpu *vcpu) |
| 923 | { |
| 924 | struct vcpu_svm *svm = to_svm(vcpu); |
| 925 | u32 exit_int_info = svm->vmcb->control.exit_int_info; |
| 926 | |
| 927 | if (is_external_interrupt(exit_int_info)) |
| 928 | return exit_int_info & SVM_EVTINJ_VEC_MASK; |
| 929 | return -1; |
| 930 | } |
| 931 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 932 | static void load_host_msrs(struct kvm_vcpu *vcpu) |
| 933 | { |
Anthony Liguori | 94dfbdb | 2007-04-29 11:56:06 +0300 | [diff] [blame] | 934 | #ifdef CONFIG_X86_64 |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 935 | wrmsrl(MSR_GS_BASE, to_svm(vcpu)->host_gs_base); |
Anthony Liguori | 94dfbdb | 2007-04-29 11:56:06 +0300 | [diff] [blame] | 936 | #endif |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 937 | } |
| 938 | |
| 939 | static void save_host_msrs(struct kvm_vcpu *vcpu) |
| 940 | { |
Anthony Liguori | 94dfbdb | 2007-04-29 11:56:06 +0300 | [diff] [blame] | 941 | #ifdef CONFIG_X86_64 |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 942 | rdmsrl(MSR_GS_BASE, to_svm(vcpu)->host_gs_base); |
Anthony Liguori | 94dfbdb | 2007-04-29 11:56:06 +0300 | [diff] [blame] | 943 | #endif |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 944 | } |
| 945 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 946 | static void new_asid(struct vcpu_svm *svm, struct svm_cpu_data *svm_data) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 947 | { |
| 948 | if (svm_data->next_asid > svm_data->max_asid) { |
| 949 | ++svm_data->asid_generation; |
| 950 | svm_data->next_asid = 1; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 951 | svm->vmcb->control.tlb_ctl = TLB_CONTROL_FLUSH_ALL_ASID; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 952 | } |
| 953 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 954 | svm->vcpu.cpu = svm_data->cpu; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 955 | svm->asid_generation = svm_data->asid_generation; |
| 956 | svm->vmcb->control.asid = svm_data->next_asid++; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 957 | } |
| 958 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 959 | static unsigned long svm_get_dr(struct kvm_vcpu *vcpu, int dr) |
| 960 | { |
Joerg Roedel | af9ca2d | 2008-04-30 17:56:03 +0200 | [diff] [blame] | 961 | unsigned long val = to_svm(vcpu)->db_regs[dr]; |
| 962 | KVMTRACE_2D(DR_READ, vcpu, (u32)dr, (u32)val, handler); |
| 963 | return val; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 964 | } |
| 965 | |
| 966 | static void svm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long value, |
| 967 | int *exception) |
| 968 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 969 | struct vcpu_svm *svm = to_svm(vcpu); |
| 970 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 971 | *exception = 0; |
| 972 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 973 | if (svm->vmcb->save.dr7 & DR7_GD_MASK) { |
| 974 | svm->vmcb->save.dr7 &= ~DR7_GD_MASK; |
| 975 | svm->vmcb->save.dr6 |= DR6_BD_MASK; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 976 | *exception = DB_VECTOR; |
| 977 | return; |
| 978 | } |
| 979 | |
| 980 | switch (dr) { |
| 981 | case 0 ... 3: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 982 | svm->db_regs[dr] = value; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 983 | return; |
| 984 | case 4 ... 5: |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 985 | if (vcpu->arch.cr4 & X86_CR4_DE) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 986 | *exception = UD_VECTOR; |
| 987 | return; |
| 988 | } |
| 989 | case 7: { |
| 990 | if (value & ~((1ULL << 32) - 1)) { |
| 991 | *exception = GP_VECTOR; |
| 992 | return; |
| 993 | } |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 994 | svm->vmcb->save.dr7 = value; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 995 | return; |
| 996 | } |
| 997 | default: |
| 998 | printk(KERN_DEBUG "%s: unexpected dr %u\n", |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame] | 999 | __func__, dr); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1000 | *exception = UD_VECTOR; |
| 1001 | return; |
| 1002 | } |
| 1003 | } |
| 1004 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1005 | static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1006 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1007 | u32 exit_int_info = svm->vmcb->control.exit_int_info; |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1008 | struct kvm *kvm = svm->vcpu.kvm; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1009 | u64 fault_address; |
| 1010 | u32 error_code; |
Avi Kivity | 577bdc4 | 2008-07-19 08:57:05 +0300 | [diff] [blame^] | 1011 | bool event_injection = false; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1012 | |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1013 | if (!irqchip_in_kernel(kvm) && |
Avi Kivity | 577bdc4 | 2008-07-19 08:57:05 +0300 | [diff] [blame^] | 1014 | is_external_interrupt(exit_int_info)) { |
| 1015 | event_injection = true; |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1016 | push_irq(&svm->vcpu, exit_int_info & SVM_EVTINJ_VEC_MASK); |
Avi Kivity | 577bdc4 | 2008-07-19 08:57:05 +0300 | [diff] [blame^] | 1017 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1018 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1019 | fault_address = svm->vmcb->control.exit_info_2; |
| 1020 | error_code = svm->vmcb->control.exit_info_1; |
Joerg Roedel | af9ca2d | 2008-04-30 17:56:03 +0200 | [diff] [blame] | 1021 | |
| 1022 | if (!npt_enabled) |
| 1023 | KVMTRACE_3D(PAGE_FAULT, &svm->vcpu, error_code, |
| 1024 | (u32)fault_address, (u32)(fault_address >> 32), |
| 1025 | handler); |
Joerg Roedel | d2ebb41 | 2008-04-30 17:56:04 +0200 | [diff] [blame] | 1026 | else |
| 1027 | KVMTRACE_3D(TDP_FAULT, &svm->vcpu, error_code, |
| 1028 | (u32)fault_address, (u32)(fault_address >> 32), |
| 1029 | handler); |
Joerg Roedel | af9ca2d | 2008-04-30 17:56:03 +0200 | [diff] [blame] | 1030 | |
Avi Kivity | 577bdc4 | 2008-07-19 08:57:05 +0300 | [diff] [blame^] | 1031 | if (event_injection) |
| 1032 | kvm_mmu_unprotect_page_virt(&svm->vcpu, fault_address); |
Avi Kivity | 3067714 | 2007-10-28 18:48:59 +0200 | [diff] [blame] | 1033 | return kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1034 | } |
| 1035 | |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 1036 | static int ud_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
| 1037 | { |
| 1038 | int er; |
| 1039 | |
Sheng Yang | 571008d | 2008-01-02 14:49:22 +0800 | [diff] [blame] | 1040 | er = emulate_instruction(&svm->vcpu, kvm_run, 0, 0, EMULTYPE_TRAP_UD); |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 1041 | if (er != EMULATE_DONE) |
Avi Kivity | 7ee5d940 | 2007-11-25 15:22:50 +0200 | [diff] [blame] | 1042 | kvm_queue_exception(&svm->vcpu, UD_VECTOR); |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 1043 | return 1; |
| 1044 | } |
| 1045 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1046 | static int nm_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Anthony Liguori | 7807fa6 | 2007-04-23 09:17:21 -0500 | [diff] [blame] | 1047 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1048 | svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR); |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1049 | if (!(svm->vcpu.arch.cr0 & X86_CR0_TS)) |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1050 | svm->vmcb->save.cr0 &= ~X86_CR0_TS; |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1051 | svm->vcpu.fpu_active = 1; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1052 | |
| 1053 | return 1; |
Anthony Liguori | 7807fa6 | 2007-04-23 09:17:21 -0500 | [diff] [blame] | 1054 | } |
| 1055 | |
Joerg Roedel | 53371b5 | 2008-04-09 14:15:30 +0200 | [diff] [blame] | 1056 | static int mc_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
| 1057 | { |
| 1058 | /* |
| 1059 | * On an #MC intercept the MCE handler is not called automatically in |
| 1060 | * the host. So do it by hand here. |
| 1061 | */ |
| 1062 | asm volatile ( |
| 1063 | "int $0x12\n"); |
| 1064 | /* not sure if we ever come back to this point */ |
| 1065 | |
| 1066 | return 1; |
| 1067 | } |
| 1068 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1069 | static int shutdown_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Joerg Roedel | 46fe4dd | 2007-01-26 00:56:42 -0800 | [diff] [blame] | 1070 | { |
| 1071 | /* |
| 1072 | * VMCB is undefined after a SHUTDOWN intercept |
| 1073 | * so reinitialize it. |
| 1074 | */ |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1075 | clear_page(svm->vmcb); |
Joerg Roedel | e6101a9 | 2008-02-13 18:58:45 +0100 | [diff] [blame] | 1076 | init_vmcb(svm); |
Joerg Roedel | 46fe4dd | 2007-01-26 00:56:42 -0800 | [diff] [blame] | 1077 | |
| 1078 | kvm_run->exit_reason = KVM_EXIT_SHUTDOWN; |
| 1079 | return 0; |
| 1080 | } |
| 1081 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1082 | static int io_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1083 | { |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 1084 | u32 io_info = svm->vmcb->control.exit_info_1; /* address size bug? */ |
Avi Kivity | 039576c | 2007-03-20 12:46:50 +0200 | [diff] [blame] | 1085 | int size, down, in, string, rep; |
| 1086 | unsigned port; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1087 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1088 | ++svm->vcpu.stat.io_exits; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1089 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1090 | svm->next_rip = svm->vmcb->control.exit_info_2; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1091 | |
Laurent Vivier | e70669a | 2007-08-05 10:36:40 +0300 | [diff] [blame] | 1092 | string = (io_info & SVM_IOIO_STR_MASK) != 0; |
| 1093 | |
| 1094 | if (string) { |
Laurent Vivier | 3427318 | 2007-09-18 11:27:37 +0200 | [diff] [blame] | 1095 | if (emulate_instruction(&svm->vcpu, |
| 1096 | kvm_run, 0, 0, 0) == EMULATE_DO_MMIO) |
Laurent Vivier | e70669a | 2007-08-05 10:36:40 +0300 | [diff] [blame] | 1097 | return 0; |
| 1098 | return 1; |
| 1099 | } |
| 1100 | |
Avi Kivity | 039576c | 2007-03-20 12:46:50 +0200 | [diff] [blame] | 1101 | in = (io_info & SVM_IOIO_TYPE_MASK) != 0; |
| 1102 | port = io_info >> 16; |
| 1103 | size = (io_info & SVM_IOIO_SIZE_MASK) >> SVM_IOIO_SIZE_SHIFT; |
Avi Kivity | 039576c | 2007-03-20 12:46:50 +0200 | [diff] [blame] | 1104 | rep = (io_info & SVM_IOIO_REP_MASK) != 0; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1105 | down = (svm->vmcb->save.rflags & X86_EFLAGS_DF) != 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1106 | |
Laurent Vivier | 3090dd7 | 2007-08-05 10:43:32 +0300 | [diff] [blame] | 1107 | return kvm_emulate_pio(&svm->vcpu, kvm_run, in, size, port); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1108 | } |
| 1109 | |
Joerg Roedel | c47f098 | 2008-04-30 17:56:00 +0200 | [diff] [blame] | 1110 | static int nmi_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
| 1111 | { |
Joerg Roedel | af9ca2d | 2008-04-30 17:56:03 +0200 | [diff] [blame] | 1112 | KVMTRACE_0D(NMI, &svm->vcpu, handler); |
Joerg Roedel | c47f098 | 2008-04-30 17:56:00 +0200 | [diff] [blame] | 1113 | return 1; |
| 1114 | } |
| 1115 | |
Joerg Roedel | a069805 | 2008-04-30 17:56:01 +0200 | [diff] [blame] | 1116 | static int intr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
| 1117 | { |
| 1118 | ++svm->vcpu.stat.irq_exits; |
Joerg Roedel | af9ca2d | 2008-04-30 17:56:03 +0200 | [diff] [blame] | 1119 | KVMTRACE_0D(INTR, &svm->vcpu, handler); |
Joerg Roedel | a069805 | 2008-04-30 17:56:01 +0200 | [diff] [blame] | 1120 | return 1; |
| 1121 | } |
| 1122 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1123 | static int nop_on_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1124 | { |
| 1125 | return 1; |
| 1126 | } |
| 1127 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1128 | static int halt_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1129 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1130 | svm->next_rip = svm->vmcb->save.rip + 1; |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1131 | skip_emulated_instruction(&svm->vcpu); |
| 1132 | return kvm_emulate_halt(&svm->vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1133 | } |
| 1134 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1135 | static int vmmcall_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Avi Kivity | 02e235b | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 1136 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1137 | svm->next_rip = svm->vmcb->save.rip + 3; |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1138 | skip_emulated_instruction(&svm->vcpu); |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 1139 | kvm_emulate_hypercall(&svm->vcpu); |
| 1140 | return 1; |
Avi Kivity | 02e235b | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 1141 | } |
| 1142 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1143 | static int invalid_op_interception(struct vcpu_svm *svm, |
| 1144 | struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1145 | { |
Avi Kivity | 7ee5d940 | 2007-11-25 15:22:50 +0200 | [diff] [blame] | 1146 | kvm_queue_exception(&svm->vcpu, UD_VECTOR); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1147 | return 1; |
| 1148 | } |
| 1149 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1150 | static int task_switch_interception(struct vcpu_svm *svm, |
| 1151 | struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1152 | { |
Izik Eidus | 37817f2 | 2008-03-24 23:14:53 +0200 | [diff] [blame] | 1153 | u16 tss_selector; |
| 1154 | |
| 1155 | tss_selector = (u16)svm->vmcb->control.exit_info_1; |
| 1156 | if (svm->vmcb->control.exit_info_2 & |
| 1157 | (1ULL << SVM_EXITINFOSHIFT_TS_REASON_IRET)) |
| 1158 | return kvm_task_switch(&svm->vcpu, tss_selector, |
| 1159 | TASK_SWITCH_IRET); |
| 1160 | if (svm->vmcb->control.exit_info_2 & |
| 1161 | (1ULL << SVM_EXITINFOSHIFT_TS_REASON_JMP)) |
| 1162 | return kvm_task_switch(&svm->vcpu, tss_selector, |
| 1163 | TASK_SWITCH_JMP); |
| 1164 | return kvm_task_switch(&svm->vcpu, tss_selector, TASK_SWITCH_CALL); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1165 | } |
| 1166 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1167 | static int cpuid_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1168 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1169 | svm->next_rip = svm->vmcb->save.rip + 2; |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1170 | kvm_emulate_cpuid(&svm->vcpu); |
Avi Kivity | 06465c5 | 2007-02-28 20:46:53 +0200 | [diff] [blame] | 1171 | return 1; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1172 | } |
| 1173 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1174 | static int emulate_on_interception(struct vcpu_svm *svm, |
| 1175 | struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1176 | { |
Laurent Vivier | 3427318 | 2007-09-18 11:27:37 +0200 | [diff] [blame] | 1177 | if (emulate_instruction(&svm->vcpu, NULL, 0, 0, 0) != EMULATE_DONE) |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame] | 1178 | pr_unimpl(&svm->vcpu, "%s: failed\n", __func__); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1179 | return 1; |
| 1180 | } |
| 1181 | |
Joerg Roedel | 1d07543 | 2007-12-06 21:02:25 +0100 | [diff] [blame] | 1182 | static int cr8_write_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
| 1183 | { |
| 1184 | emulate_instruction(&svm->vcpu, NULL, 0, 0, 0); |
| 1185 | if (irqchip_in_kernel(svm->vcpu.kvm)) |
| 1186 | return 1; |
| 1187 | kvm_run->exit_reason = KVM_EXIT_SET_TPR; |
| 1188 | return 0; |
| 1189 | } |
| 1190 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1191 | static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data) |
| 1192 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1193 | struct vcpu_svm *svm = to_svm(vcpu); |
| 1194 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1195 | switch (ecx) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1196 | case MSR_IA32_TIME_STAMP_COUNTER: { |
| 1197 | u64 tsc; |
| 1198 | |
| 1199 | rdtscll(tsc); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1200 | *data = svm->vmcb->control.tsc_offset + tsc; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1201 | break; |
| 1202 | } |
Avi Kivity | 0e859ca | 2006-12-22 01:05:08 -0800 | [diff] [blame] | 1203 | case MSR_K6_STAR: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1204 | *data = svm->vmcb->save.star; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1205 | break; |
Avi Kivity | 0e859ca | 2006-12-22 01:05:08 -0800 | [diff] [blame] | 1206 | #ifdef CONFIG_X86_64 |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1207 | case MSR_LSTAR: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1208 | *data = svm->vmcb->save.lstar; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1209 | break; |
| 1210 | case MSR_CSTAR: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1211 | *data = svm->vmcb->save.cstar; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1212 | break; |
| 1213 | case MSR_KERNEL_GS_BASE: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1214 | *data = svm->vmcb->save.kernel_gs_base; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1215 | break; |
| 1216 | case MSR_SYSCALL_MASK: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1217 | *data = svm->vmcb->save.sfmask; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1218 | break; |
| 1219 | #endif |
| 1220 | case MSR_IA32_SYSENTER_CS: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1221 | *data = svm->vmcb->save.sysenter_cs; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1222 | break; |
| 1223 | case MSR_IA32_SYSENTER_EIP: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1224 | *data = svm->vmcb->save.sysenter_eip; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1225 | break; |
| 1226 | case MSR_IA32_SYSENTER_ESP: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1227 | *data = svm->vmcb->save.sysenter_esp; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1228 | break; |
Joerg Roedel | a2938c8 | 2008-02-13 16:30:28 +0100 | [diff] [blame] | 1229 | /* Nobody will change the following 5 values in the VMCB so |
| 1230 | we can safely return them on rdmsr. They will always be 0 |
| 1231 | until LBRV is implemented. */ |
| 1232 | case MSR_IA32_DEBUGCTLMSR: |
| 1233 | *data = svm->vmcb->save.dbgctl; |
| 1234 | break; |
| 1235 | case MSR_IA32_LASTBRANCHFROMIP: |
| 1236 | *data = svm->vmcb->save.br_from; |
| 1237 | break; |
| 1238 | case MSR_IA32_LASTBRANCHTOIP: |
| 1239 | *data = svm->vmcb->save.br_to; |
| 1240 | break; |
| 1241 | case MSR_IA32_LASTINTFROMIP: |
| 1242 | *data = svm->vmcb->save.last_excp_from; |
| 1243 | break; |
| 1244 | case MSR_IA32_LASTINTTOIP: |
| 1245 | *data = svm->vmcb->save.last_excp_to; |
| 1246 | break; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1247 | default: |
Avi Kivity | 3bab1f5 | 2006-12-29 16:49:48 -0800 | [diff] [blame] | 1248 | return kvm_get_msr_common(vcpu, ecx, data); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1249 | } |
| 1250 | return 0; |
| 1251 | } |
| 1252 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1253 | static int rdmsr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1254 | { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1255 | u32 ecx = svm->vcpu.arch.regs[VCPU_REGS_RCX]; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1256 | u64 data; |
| 1257 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1258 | if (svm_get_msr(&svm->vcpu, ecx, &data)) |
Avi Kivity | c1a5d4f | 2007-11-25 14:12:03 +0200 | [diff] [blame] | 1259 | kvm_inject_gp(&svm->vcpu, 0); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1260 | else { |
Joerg Roedel | af9ca2d | 2008-04-30 17:56:03 +0200 | [diff] [blame] | 1261 | KVMTRACE_3D(MSR_READ, &svm->vcpu, ecx, (u32)data, |
| 1262 | (u32)(data >> 32), handler); |
| 1263 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1264 | svm->vmcb->save.rax = data & 0xffffffff; |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1265 | svm->vcpu.arch.regs[VCPU_REGS_RDX] = data >> 32; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1266 | svm->next_rip = svm->vmcb->save.rip + 2; |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1267 | skip_emulated_instruction(&svm->vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1268 | } |
| 1269 | return 1; |
| 1270 | } |
| 1271 | |
| 1272 | static int svm_set_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 data) |
| 1273 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1274 | struct vcpu_svm *svm = to_svm(vcpu); |
| 1275 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1276 | switch (ecx) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1277 | case MSR_IA32_TIME_STAMP_COUNTER: { |
| 1278 | u64 tsc; |
| 1279 | |
| 1280 | rdtscll(tsc); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1281 | svm->vmcb->control.tsc_offset = data - tsc; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1282 | break; |
| 1283 | } |
Avi Kivity | 0e859ca | 2006-12-22 01:05:08 -0800 | [diff] [blame] | 1284 | case MSR_K6_STAR: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1285 | svm->vmcb->save.star = data; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1286 | break; |
Robert P. J. Day | 49b14f2 | 2007-01-29 13:19:50 -0800 | [diff] [blame] | 1287 | #ifdef CONFIG_X86_64 |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1288 | case MSR_LSTAR: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1289 | svm->vmcb->save.lstar = data; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1290 | break; |
| 1291 | case MSR_CSTAR: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1292 | svm->vmcb->save.cstar = data; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1293 | break; |
| 1294 | case MSR_KERNEL_GS_BASE: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1295 | svm->vmcb->save.kernel_gs_base = data; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1296 | break; |
| 1297 | case MSR_SYSCALL_MASK: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1298 | svm->vmcb->save.sfmask = data; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1299 | break; |
| 1300 | #endif |
| 1301 | case MSR_IA32_SYSENTER_CS: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1302 | svm->vmcb->save.sysenter_cs = data; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1303 | break; |
| 1304 | case MSR_IA32_SYSENTER_EIP: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1305 | svm->vmcb->save.sysenter_eip = data; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1306 | break; |
| 1307 | case MSR_IA32_SYSENTER_ESP: |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1308 | svm->vmcb->save.sysenter_esp = data; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1309 | break; |
Joerg Roedel | a2938c8 | 2008-02-13 16:30:28 +0100 | [diff] [blame] | 1310 | case MSR_IA32_DEBUGCTLMSR: |
Joerg Roedel | 24e09cb | 2008-02-13 18:58:47 +0100 | [diff] [blame] | 1311 | if (!svm_has(SVM_FEATURE_LBRV)) { |
| 1312 | pr_unimpl(vcpu, "%s: MSR_IA32_DEBUGCTL 0x%llx, nop\n", |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame] | 1313 | __func__, data); |
Joerg Roedel | 24e09cb | 2008-02-13 18:58:47 +0100 | [diff] [blame] | 1314 | break; |
| 1315 | } |
| 1316 | if (data & DEBUGCTL_RESERVED_BITS) |
| 1317 | return 1; |
| 1318 | |
| 1319 | svm->vmcb->save.dbgctl = data; |
| 1320 | if (data & (1ULL<<0)) |
| 1321 | svm_enable_lbrv(svm); |
| 1322 | else |
| 1323 | svm_disable_lbrv(svm); |
Joerg Roedel | a2938c8 | 2008-02-13 16:30:28 +0100 | [diff] [blame] | 1324 | break; |
Joerg Roedel | 62b9aba | 2007-12-11 15:36:57 +0100 | [diff] [blame] | 1325 | case MSR_K7_EVNTSEL0: |
| 1326 | case MSR_K7_EVNTSEL1: |
| 1327 | case MSR_K7_EVNTSEL2: |
| 1328 | case MSR_K7_EVNTSEL3: |
Chris Lalancette | 14ae51b | 2008-05-05 13:05:16 -0400 | [diff] [blame] | 1329 | case MSR_K7_PERFCTR0: |
| 1330 | case MSR_K7_PERFCTR1: |
| 1331 | case MSR_K7_PERFCTR2: |
| 1332 | case MSR_K7_PERFCTR3: |
Joerg Roedel | 62b9aba | 2007-12-11 15:36:57 +0100 | [diff] [blame] | 1333 | /* |
Chris Lalancette | 14ae51b | 2008-05-05 13:05:16 -0400 | [diff] [blame] | 1334 | * Just discard all writes to the performance counters; this |
| 1335 | * should keep both older linux and windows 64-bit guests |
| 1336 | * happy |
Joerg Roedel | 62b9aba | 2007-12-11 15:36:57 +0100 | [diff] [blame] | 1337 | */ |
Chris Lalancette | 14ae51b | 2008-05-05 13:05:16 -0400 | [diff] [blame] | 1338 | pr_unimpl(vcpu, "unimplemented perfctr wrmsr: 0x%x data 0x%llx\n", ecx, data); |
| 1339 | |
Joerg Roedel | 62b9aba | 2007-12-11 15:36:57 +0100 | [diff] [blame] | 1340 | break; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1341 | default: |
Avi Kivity | 3bab1f5 | 2006-12-29 16:49:48 -0800 | [diff] [blame] | 1342 | return kvm_set_msr_common(vcpu, ecx, data); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1343 | } |
| 1344 | return 0; |
| 1345 | } |
| 1346 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1347 | static int wrmsr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1348 | { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1349 | u32 ecx = svm->vcpu.arch.regs[VCPU_REGS_RCX]; |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1350 | u64 data = (svm->vmcb->save.rax & -1u) |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1351 | | ((u64)(svm->vcpu.arch.regs[VCPU_REGS_RDX] & -1u) << 32); |
Joerg Roedel | af9ca2d | 2008-04-30 17:56:03 +0200 | [diff] [blame] | 1352 | |
| 1353 | KVMTRACE_3D(MSR_WRITE, &svm->vcpu, ecx, (u32)data, (u32)(data >> 32), |
| 1354 | handler); |
| 1355 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1356 | svm->next_rip = svm->vmcb->save.rip + 2; |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1357 | if (svm_set_msr(&svm->vcpu, ecx, data)) |
Avi Kivity | c1a5d4f | 2007-11-25 14:12:03 +0200 | [diff] [blame] | 1358 | kvm_inject_gp(&svm->vcpu, 0); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1359 | else |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1360 | skip_emulated_instruction(&svm->vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1361 | return 1; |
| 1362 | } |
| 1363 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1364 | static int msr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1365 | { |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1366 | if (svm->vmcb->control.exit_info_1) |
| 1367 | return wrmsr_interception(svm, kvm_run); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1368 | else |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1369 | return rdmsr_interception(svm, kvm_run); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1370 | } |
| 1371 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1372 | static int interrupt_window_interception(struct vcpu_svm *svm, |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1373 | struct kvm_run *kvm_run) |
| 1374 | { |
Joerg Roedel | af9ca2d | 2008-04-30 17:56:03 +0200 | [diff] [blame] | 1375 | KVMTRACE_0D(PEND_INTR, &svm->vcpu, handler); |
| 1376 | |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1377 | svm->vmcb->control.intercept &= ~(1ULL << INTERCEPT_VINTR); |
| 1378 | svm->vmcb->control.int_ctl &= ~V_IRQ_MASK; |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1379 | /* |
| 1380 | * If the user space waits to inject interrupts, exit as soon as |
| 1381 | * possible |
| 1382 | */ |
| 1383 | if (kvm_run->request_interrupt_window && |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1384 | !svm->vcpu.arch.irq_summary) { |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1385 | ++svm->vcpu.stat.irq_window_exits; |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1386 | kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN; |
| 1387 | return 0; |
| 1388 | } |
| 1389 | |
| 1390 | return 1; |
| 1391 | } |
| 1392 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1393 | static int (*svm_exit_handlers[])(struct vcpu_svm *svm, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1394 | struct kvm_run *kvm_run) = { |
| 1395 | [SVM_EXIT_READ_CR0] = emulate_on_interception, |
| 1396 | [SVM_EXIT_READ_CR3] = emulate_on_interception, |
| 1397 | [SVM_EXIT_READ_CR4] = emulate_on_interception, |
Avi Kivity | 80a8119 | 2007-12-06 19:50:00 +0200 | [diff] [blame] | 1398 | [SVM_EXIT_READ_CR8] = emulate_on_interception, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1399 | /* for now: */ |
| 1400 | [SVM_EXIT_WRITE_CR0] = emulate_on_interception, |
| 1401 | [SVM_EXIT_WRITE_CR3] = emulate_on_interception, |
| 1402 | [SVM_EXIT_WRITE_CR4] = emulate_on_interception, |
Joerg Roedel | 1d07543 | 2007-12-06 21:02:25 +0100 | [diff] [blame] | 1403 | [SVM_EXIT_WRITE_CR8] = cr8_write_interception, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1404 | [SVM_EXIT_READ_DR0] = emulate_on_interception, |
| 1405 | [SVM_EXIT_READ_DR1] = emulate_on_interception, |
| 1406 | [SVM_EXIT_READ_DR2] = emulate_on_interception, |
| 1407 | [SVM_EXIT_READ_DR3] = emulate_on_interception, |
| 1408 | [SVM_EXIT_WRITE_DR0] = emulate_on_interception, |
| 1409 | [SVM_EXIT_WRITE_DR1] = emulate_on_interception, |
| 1410 | [SVM_EXIT_WRITE_DR2] = emulate_on_interception, |
| 1411 | [SVM_EXIT_WRITE_DR3] = emulate_on_interception, |
| 1412 | [SVM_EXIT_WRITE_DR5] = emulate_on_interception, |
| 1413 | [SVM_EXIT_WRITE_DR7] = emulate_on_interception, |
Anthony Liguori | 7aa81cc | 2007-09-17 14:57:50 -0500 | [diff] [blame] | 1414 | [SVM_EXIT_EXCP_BASE + UD_VECTOR] = ud_interception, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1415 | [SVM_EXIT_EXCP_BASE + PF_VECTOR] = pf_interception, |
Anthony Liguori | 7807fa6 | 2007-04-23 09:17:21 -0500 | [diff] [blame] | 1416 | [SVM_EXIT_EXCP_BASE + NM_VECTOR] = nm_interception, |
Joerg Roedel | 53371b5 | 2008-04-09 14:15:30 +0200 | [diff] [blame] | 1417 | [SVM_EXIT_EXCP_BASE + MC_VECTOR] = mc_interception, |
Joerg Roedel | a069805 | 2008-04-30 17:56:01 +0200 | [diff] [blame] | 1418 | [SVM_EXIT_INTR] = intr_interception, |
Joerg Roedel | c47f098 | 2008-04-30 17:56:00 +0200 | [diff] [blame] | 1419 | [SVM_EXIT_NMI] = nmi_interception, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1420 | [SVM_EXIT_SMI] = nop_on_interception, |
| 1421 | [SVM_EXIT_INIT] = nop_on_interception, |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1422 | [SVM_EXIT_VINTR] = interrupt_window_interception, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1423 | /* [SVM_EXIT_CR0_SEL_WRITE] = emulate_on_interception, */ |
| 1424 | [SVM_EXIT_CPUID] = cpuid_interception, |
Avi Kivity | cf5a94d | 2007-10-28 16:11:58 +0200 | [diff] [blame] | 1425 | [SVM_EXIT_INVD] = emulate_on_interception, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1426 | [SVM_EXIT_HLT] = halt_interception, |
| 1427 | [SVM_EXIT_INVLPG] = emulate_on_interception, |
| 1428 | [SVM_EXIT_INVLPGA] = invalid_op_interception, |
| 1429 | [SVM_EXIT_IOIO] = io_interception, |
| 1430 | [SVM_EXIT_MSR] = msr_interception, |
| 1431 | [SVM_EXIT_TASK_SWITCH] = task_switch_interception, |
Joerg Roedel | 46fe4dd | 2007-01-26 00:56:42 -0800 | [diff] [blame] | 1432 | [SVM_EXIT_SHUTDOWN] = shutdown_interception, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1433 | [SVM_EXIT_VMRUN] = invalid_op_interception, |
Avi Kivity | 02e235b | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 1434 | [SVM_EXIT_VMMCALL] = vmmcall_interception, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1435 | [SVM_EXIT_VMLOAD] = invalid_op_interception, |
| 1436 | [SVM_EXIT_VMSAVE] = invalid_op_interception, |
| 1437 | [SVM_EXIT_STGI] = invalid_op_interception, |
| 1438 | [SVM_EXIT_CLGI] = invalid_op_interception, |
| 1439 | [SVM_EXIT_SKINIT] = invalid_op_interception, |
Avi Kivity | cf5a94d | 2007-10-28 16:11:58 +0200 | [diff] [blame] | 1440 | [SVM_EXIT_WBINVD] = emulate_on_interception, |
Joerg Roedel | 916ce23 | 2007-03-21 19:47:00 +0100 | [diff] [blame] | 1441 | [SVM_EXIT_MONITOR] = invalid_op_interception, |
| 1442 | [SVM_EXIT_MWAIT] = invalid_op_interception, |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 1443 | [SVM_EXIT_NPF] = pf_interception, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1444 | }; |
| 1445 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1446 | static int handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1447 | { |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1448 | struct vcpu_svm *svm = to_svm(vcpu); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1449 | u32 exit_code = svm->vmcb->control.exit_code; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1450 | |
Joerg Roedel | af9ca2d | 2008-04-30 17:56:03 +0200 | [diff] [blame] | 1451 | KVMTRACE_3D(VMEXIT, vcpu, exit_code, (u32)svm->vmcb->save.rip, |
| 1452 | (u32)((u64)svm->vmcb->save.rip >> 32), entryexit); |
| 1453 | |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 1454 | if (npt_enabled) { |
| 1455 | int mmu_reload = 0; |
| 1456 | if ((vcpu->arch.cr0 ^ svm->vmcb->save.cr0) & X86_CR0_PG) { |
| 1457 | svm_set_cr0(vcpu, svm->vmcb->save.cr0); |
| 1458 | mmu_reload = 1; |
| 1459 | } |
| 1460 | vcpu->arch.cr0 = svm->vmcb->save.cr0; |
| 1461 | vcpu->arch.cr3 = svm->vmcb->save.cr3; |
| 1462 | if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) { |
| 1463 | if (!load_pdptrs(vcpu, vcpu->arch.cr3)) { |
| 1464 | kvm_inject_gp(vcpu, 0); |
| 1465 | return 1; |
| 1466 | } |
| 1467 | } |
| 1468 | if (mmu_reload) { |
| 1469 | kvm_mmu_reset_context(vcpu); |
| 1470 | kvm_mmu_load(vcpu); |
| 1471 | } |
| 1472 | } |
| 1473 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1474 | kvm_reput_irq(svm); |
| 1475 | |
| 1476 | if (svm->vmcb->control.exit_code == SVM_EXIT_ERR) { |
| 1477 | kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY; |
| 1478 | kvm_run->fail_entry.hardware_entry_failure_reason |
| 1479 | = svm->vmcb->control.exit_code; |
| 1480 | return 0; |
| 1481 | } |
| 1482 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1483 | if (is_external_interrupt(svm->vmcb->control.exit_int_info) && |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 1484 | exit_code != SVM_EXIT_EXCP_BASE + PF_VECTOR && |
| 1485 | exit_code != SVM_EXIT_NPF) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1486 | printk(KERN_ERR "%s: unexpected exit_ini_info 0x%x " |
| 1487 | "exit_code 0x%x\n", |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame] | 1488 | __func__, svm->vmcb->control.exit_int_info, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1489 | exit_code); |
| 1490 | |
Ahmed S. Darwish | 9d8f549 | 2007-02-19 14:37:46 +0200 | [diff] [blame] | 1491 | if (exit_code >= ARRAY_SIZE(svm_exit_handlers) |
Joe Perches | 56919c5 | 2007-11-12 20:06:51 -0800 | [diff] [blame] | 1492 | || !svm_exit_handlers[exit_code]) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1493 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; |
Avi Kivity | 364b625 | 2007-04-16 14:28:40 +0300 | [diff] [blame] | 1494 | kvm_run->hw.hardware_exit_reason = exit_code; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1495 | return 0; |
| 1496 | } |
| 1497 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1498 | return svm_exit_handlers[exit_code](svm, kvm_run); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1499 | } |
| 1500 | |
| 1501 | static void reload_tss(struct kvm_vcpu *vcpu) |
| 1502 | { |
| 1503 | int cpu = raw_smp_processor_id(); |
| 1504 | |
| 1505 | struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu); |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 1506 | svm_data->tss_desc->type = 9; /* available 32/64-bit TSS */ |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1507 | load_TR_desc(); |
| 1508 | } |
| 1509 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1510 | static void pre_svm_run(struct vcpu_svm *svm) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1511 | { |
| 1512 | int cpu = raw_smp_processor_id(); |
| 1513 | |
| 1514 | struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu); |
| 1515 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1516 | svm->vmcb->control.tlb_ctl = TLB_CONTROL_DO_NOTHING; |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1517 | if (svm->vcpu.cpu != cpu || |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1518 | svm->asid_generation != svm_data->asid_generation) |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1519 | new_asid(svm, svm_data); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1520 | } |
| 1521 | |
| 1522 | |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1523 | static inline void svm_inject_irq(struct vcpu_svm *svm, int irq) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1524 | { |
| 1525 | struct vmcb_control_area *control; |
| 1526 | |
Joerg Roedel | af9ca2d | 2008-04-30 17:56:03 +0200 | [diff] [blame] | 1527 | KVMTRACE_1D(INJ_VIRQ, &svm->vcpu, (u32)irq, handler); |
| 1528 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1529 | control = &svm->vmcb->control; |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1530 | control->int_vector = irq; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1531 | control->int_ctl &= ~V_INTR_PRIO_MASK; |
| 1532 | control->int_ctl |= V_IRQ_MASK | |
| 1533 | ((/*control->int_vector >> 4*/ 0xf) << V_INTR_PRIO_SHIFT); |
| 1534 | } |
| 1535 | |
Eddie Dong | 2a8067f | 2007-08-06 16:29:07 +0300 | [diff] [blame] | 1536 | static void svm_set_irq(struct kvm_vcpu *vcpu, int irq) |
| 1537 | { |
| 1538 | struct vcpu_svm *svm = to_svm(vcpu); |
| 1539 | |
| 1540 | svm_inject_irq(svm, irq); |
| 1541 | } |
| 1542 | |
Joerg Roedel | aaacfc9 | 2008-04-16 16:51:18 +0200 | [diff] [blame] | 1543 | static void update_cr8_intercept(struct kvm_vcpu *vcpu) |
| 1544 | { |
| 1545 | struct vcpu_svm *svm = to_svm(vcpu); |
| 1546 | struct vmcb *vmcb = svm->vmcb; |
| 1547 | int max_irr, tpr; |
| 1548 | |
| 1549 | if (!irqchip_in_kernel(vcpu->kvm) || vcpu->arch.apic->vapic_addr) |
| 1550 | return; |
| 1551 | |
| 1552 | vmcb->control.intercept_cr_write &= ~INTERCEPT_CR8_MASK; |
| 1553 | |
| 1554 | max_irr = kvm_lapic_find_highest_irr(vcpu); |
| 1555 | if (max_irr == -1) |
| 1556 | return; |
| 1557 | |
| 1558 | tpr = kvm_lapic_get_cr8(vcpu) << 4; |
| 1559 | |
| 1560 | if (tpr >= (max_irr & 0xf0)) |
| 1561 | vmcb->control.intercept_cr_write |= INTERCEPT_CR8_MASK; |
| 1562 | } |
| 1563 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1564 | static void svm_intr_assist(struct kvm_vcpu *vcpu) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1565 | { |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1566 | struct vcpu_svm *svm = to_svm(vcpu); |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1567 | struct vmcb *vmcb = svm->vmcb; |
| 1568 | int intr_vector = -1; |
| 1569 | |
| 1570 | if ((vmcb->control.exit_int_info & SVM_EVTINJ_VALID) && |
| 1571 | ((vmcb->control.exit_int_info & SVM_EVTINJ_TYPE_MASK) == 0)) { |
| 1572 | intr_vector = vmcb->control.exit_int_info & |
| 1573 | SVM_EVTINJ_VEC_MASK; |
| 1574 | vmcb->control.exit_int_info = 0; |
| 1575 | svm_inject_irq(svm, intr_vector); |
Joerg Roedel | aaacfc9 | 2008-04-16 16:51:18 +0200 | [diff] [blame] | 1576 | goto out; |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1577 | } |
| 1578 | |
| 1579 | if (vmcb->control.int_ctl & V_IRQ_MASK) |
Joerg Roedel | aaacfc9 | 2008-04-16 16:51:18 +0200 | [diff] [blame] | 1580 | goto out; |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1581 | |
Eddie Dong | 1b9778d | 2007-09-03 16:56:58 +0300 | [diff] [blame] | 1582 | if (!kvm_cpu_has_interrupt(vcpu)) |
Joerg Roedel | aaacfc9 | 2008-04-16 16:51:18 +0200 | [diff] [blame] | 1583 | goto out; |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1584 | |
| 1585 | if (!(vmcb->save.rflags & X86_EFLAGS_IF) || |
| 1586 | (vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) || |
| 1587 | (vmcb->control.event_inj & SVM_EVTINJ_VALID)) { |
| 1588 | /* unable to deliver irq, set pending irq */ |
| 1589 | vmcb->control.intercept |= (1ULL << INTERCEPT_VINTR); |
| 1590 | svm_inject_irq(svm, 0x0); |
Joerg Roedel | aaacfc9 | 2008-04-16 16:51:18 +0200 | [diff] [blame] | 1591 | goto out; |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1592 | } |
| 1593 | /* Okay, we can deliver the interrupt: grab it and update PIC state. */ |
Eddie Dong | 1b9778d | 2007-09-03 16:56:58 +0300 | [diff] [blame] | 1594 | intr_vector = kvm_cpu_get_interrupt(vcpu); |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1595 | svm_inject_irq(svm, intr_vector); |
Eddie Dong | 1b9778d | 2007-09-03 16:56:58 +0300 | [diff] [blame] | 1596 | kvm_timer_intr_post(vcpu, intr_vector); |
Joerg Roedel | aaacfc9 | 2008-04-16 16:51:18 +0200 | [diff] [blame] | 1597 | out: |
| 1598 | update_cr8_intercept(vcpu); |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1599 | } |
| 1600 | |
| 1601 | static void kvm_reput_irq(struct vcpu_svm *svm) |
| 1602 | { |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1603 | struct vmcb_control_area *control = &svm->vmcb->control; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1604 | |
Eddie Dong | 7017fc3 | 2007-07-18 11:34:57 +0300 | [diff] [blame] | 1605 | if ((control->int_ctl & V_IRQ_MASK) |
| 1606 | && !irqchip_in_kernel(svm->vcpu.kvm)) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1607 | control->int_ctl &= ~V_IRQ_MASK; |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1608 | push_irq(&svm->vcpu, control->int_vector); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1609 | } |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1610 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1611 | svm->vcpu.arch.interrupt_window_open = |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1612 | !(control->int_state & SVM_INTERRUPT_SHADOW_MASK); |
| 1613 | } |
| 1614 | |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1615 | static void svm_do_inject_vector(struct vcpu_svm *svm) |
| 1616 | { |
| 1617 | struct kvm_vcpu *vcpu = &svm->vcpu; |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1618 | int word_index = __ffs(vcpu->arch.irq_summary); |
| 1619 | int bit_index = __ffs(vcpu->arch.irq_pending[word_index]); |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1620 | int irq = word_index * BITS_PER_LONG + bit_index; |
| 1621 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1622 | clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]); |
| 1623 | if (!vcpu->arch.irq_pending[word_index]) |
| 1624 | clear_bit(word_index, &vcpu->arch.irq_summary); |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1625 | svm_inject_irq(svm, irq); |
| 1626 | } |
| 1627 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1628 | static void do_interrupt_requests(struct kvm_vcpu *vcpu, |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1629 | struct kvm_run *kvm_run) |
| 1630 | { |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1631 | struct vcpu_svm *svm = to_svm(vcpu); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1632 | struct vmcb_control_area *control = &svm->vmcb->control; |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1633 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1634 | svm->vcpu.arch.interrupt_window_open = |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1635 | (!(control->int_state & SVM_INTERRUPT_SHADOW_MASK) && |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1636 | (svm->vmcb->save.rflags & X86_EFLAGS_IF)); |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1637 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1638 | if (svm->vcpu.arch.interrupt_window_open && svm->vcpu.arch.irq_summary) |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1639 | /* |
| 1640 | * If interrupts enabled, and not blocked by sti or mov ss. Good. |
| 1641 | */ |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1642 | svm_do_inject_vector(svm); |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1643 | |
| 1644 | /* |
| 1645 | * Interrupts blocked. Wait for unblock. |
| 1646 | */ |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1647 | if (!svm->vcpu.arch.interrupt_window_open && |
| 1648 | (svm->vcpu.arch.irq_summary || kvm_run->request_interrupt_window)) |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1649 | control->intercept |= 1ULL << INTERCEPT_VINTR; |
Mike Day | d77c26f | 2007-10-08 09:02:08 -0400 | [diff] [blame] | 1650 | else |
Dor Laor | c1150d8 | 2007-01-05 16:36:24 -0800 | [diff] [blame] | 1651 | control->intercept &= ~(1ULL << INTERCEPT_VINTR); |
| 1652 | } |
| 1653 | |
Izik Eidus | cbc9402 | 2007-10-25 00:29:55 +0200 | [diff] [blame] | 1654 | static int svm_set_tss_addr(struct kvm *kvm, unsigned int addr) |
| 1655 | { |
| 1656 | return 0; |
| 1657 | } |
| 1658 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1659 | static void save_db_regs(unsigned long *db_regs) |
| 1660 | { |
Avi Kivity | 5aff458 | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 1661 | asm volatile ("mov %%dr0, %0" : "=r"(db_regs[0])); |
| 1662 | asm volatile ("mov %%dr1, %0" : "=r"(db_regs[1])); |
| 1663 | asm volatile ("mov %%dr2, %0" : "=r"(db_regs[2])); |
| 1664 | asm volatile ("mov %%dr3, %0" : "=r"(db_regs[3])); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1665 | } |
| 1666 | |
| 1667 | static void load_db_regs(unsigned long *db_regs) |
| 1668 | { |
Avi Kivity | 5aff458 | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 1669 | asm volatile ("mov %0, %%dr0" : : "r"(db_regs[0])); |
| 1670 | asm volatile ("mov %0, %%dr1" : : "r"(db_regs[1])); |
| 1671 | asm volatile ("mov %0, %%dr2" : : "r"(db_regs[2])); |
| 1672 | asm volatile ("mov %0, %%dr3" : : "r"(db_regs[3])); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1673 | } |
| 1674 | |
Avi Kivity | d9e368d | 2007-06-07 19:18:30 +0300 | [diff] [blame] | 1675 | static void svm_flush_tlb(struct kvm_vcpu *vcpu) |
| 1676 | { |
| 1677 | force_new_asid(vcpu); |
| 1678 | } |
| 1679 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1680 | static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu) |
| 1681 | { |
| 1682 | } |
| 1683 | |
Joerg Roedel | d7bf822 | 2008-04-16 16:51:17 +0200 | [diff] [blame] | 1684 | static inline void sync_cr8_to_lapic(struct kvm_vcpu *vcpu) |
| 1685 | { |
| 1686 | struct vcpu_svm *svm = to_svm(vcpu); |
| 1687 | |
| 1688 | if (!(svm->vmcb->control.intercept_cr_write & INTERCEPT_CR8_MASK)) { |
| 1689 | int cr8 = svm->vmcb->control.int_ctl & V_TPR_MASK; |
| 1690 | kvm_lapic_set_tpr(vcpu, cr8); |
| 1691 | } |
| 1692 | } |
| 1693 | |
Joerg Roedel | 649d686 | 2008-04-16 16:51:15 +0200 | [diff] [blame] | 1694 | static inline void sync_lapic_to_cr8(struct kvm_vcpu *vcpu) |
| 1695 | { |
| 1696 | struct vcpu_svm *svm = to_svm(vcpu); |
| 1697 | u64 cr8; |
| 1698 | |
| 1699 | if (!irqchip_in_kernel(vcpu->kvm)) |
| 1700 | return; |
| 1701 | |
| 1702 | cr8 = kvm_get_cr8(vcpu); |
| 1703 | svm->vmcb->control.int_ctl &= ~V_TPR_MASK; |
| 1704 | svm->vmcb->control.int_ctl |= cr8 & V_TPR_MASK; |
| 1705 | } |
| 1706 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1707 | static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1708 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1709 | struct vcpu_svm *svm = to_svm(vcpu); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1710 | u16 fs_selector; |
| 1711 | u16 gs_selector; |
| 1712 | u16 ldt_selector; |
Avi Kivity | d9e368d | 2007-06-07 19:18:30 +0300 | [diff] [blame] | 1713 | |
Rusty Russell | e756fc6 | 2007-07-30 20:07:08 +1000 | [diff] [blame] | 1714 | pre_svm_run(svm); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1715 | |
Joerg Roedel | 649d686 | 2008-04-16 16:51:15 +0200 | [diff] [blame] | 1716 | sync_lapic_to_cr8(vcpu); |
| 1717 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1718 | save_host_msrs(vcpu); |
Avi Kivity | d6e88ae | 2008-07-10 16:53:33 +0300 | [diff] [blame] | 1719 | fs_selector = kvm_read_fs(); |
| 1720 | gs_selector = kvm_read_gs(); |
| 1721 | ldt_selector = kvm_read_ldt(); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1722 | svm->host_cr2 = kvm_read_cr2(); |
| 1723 | svm->host_dr6 = read_dr6(); |
| 1724 | svm->host_dr7 = read_dr7(); |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1725 | svm->vmcb->save.cr2 = vcpu->arch.cr2; |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 1726 | /* required for live migration with NPT */ |
| 1727 | if (npt_enabled) |
| 1728 | svm->vmcb->save.cr3 = vcpu->arch.cr3; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1729 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1730 | if (svm->vmcb->save.dr7 & 0xff) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1731 | write_dr7(0); |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1732 | save_db_regs(svm->host_db_regs); |
| 1733 | load_db_regs(svm->db_regs); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1734 | } |
Avi Kivity | 36241b8 | 2006-12-22 01:05:20 -0800 | [diff] [blame] | 1735 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1736 | clgi(); |
| 1737 | |
| 1738 | local_irq_enable(); |
Avi Kivity | 36241b8 | 2006-12-22 01:05:20 -0800 | [diff] [blame] | 1739 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1740 | asm volatile ( |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 1741 | #ifdef CONFIG_X86_64 |
Laurent Vivier | 54a08c0 | 2007-10-25 14:18:53 +0200 | [diff] [blame] | 1742 | "push %%rbp; \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1743 | #else |
Laurent Vivier | fe7935d | 2007-10-25 14:18:54 +0200 | [diff] [blame] | 1744 | "push %%ebp; \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1745 | #endif |
| 1746 | |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 1747 | #ifdef CONFIG_X86_64 |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 1748 | "mov %c[rbx](%[svm]), %%rbx \n\t" |
| 1749 | "mov %c[rcx](%[svm]), %%rcx \n\t" |
| 1750 | "mov %c[rdx](%[svm]), %%rdx \n\t" |
| 1751 | "mov %c[rsi](%[svm]), %%rsi \n\t" |
| 1752 | "mov %c[rdi](%[svm]), %%rdi \n\t" |
| 1753 | "mov %c[rbp](%[svm]), %%rbp \n\t" |
| 1754 | "mov %c[r8](%[svm]), %%r8 \n\t" |
| 1755 | "mov %c[r9](%[svm]), %%r9 \n\t" |
| 1756 | "mov %c[r10](%[svm]), %%r10 \n\t" |
| 1757 | "mov %c[r11](%[svm]), %%r11 \n\t" |
| 1758 | "mov %c[r12](%[svm]), %%r12 \n\t" |
| 1759 | "mov %c[r13](%[svm]), %%r13 \n\t" |
| 1760 | "mov %c[r14](%[svm]), %%r14 \n\t" |
| 1761 | "mov %c[r15](%[svm]), %%r15 \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1762 | #else |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 1763 | "mov %c[rbx](%[svm]), %%ebx \n\t" |
| 1764 | "mov %c[rcx](%[svm]), %%ecx \n\t" |
| 1765 | "mov %c[rdx](%[svm]), %%edx \n\t" |
| 1766 | "mov %c[rsi](%[svm]), %%esi \n\t" |
| 1767 | "mov %c[rdi](%[svm]), %%edi \n\t" |
| 1768 | "mov %c[rbp](%[svm]), %%ebp \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1769 | #endif |
| 1770 | |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 1771 | #ifdef CONFIG_X86_64 |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1772 | /* Enter guest mode */ |
| 1773 | "push %%rax \n\t" |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 1774 | "mov %c[vmcb](%[svm]), %%rax \n\t" |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 1775 | __ex(SVM_VMLOAD) "\n\t" |
| 1776 | __ex(SVM_VMRUN) "\n\t" |
| 1777 | __ex(SVM_VMSAVE) "\n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1778 | "pop %%rax \n\t" |
| 1779 | #else |
| 1780 | /* Enter guest mode */ |
| 1781 | "push %%eax \n\t" |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 1782 | "mov %c[vmcb](%[svm]), %%eax \n\t" |
Avi Kivity | 4ecac3f | 2008-05-13 13:23:38 +0300 | [diff] [blame] | 1783 | __ex(SVM_VMLOAD) "\n\t" |
| 1784 | __ex(SVM_VMRUN) "\n\t" |
| 1785 | __ex(SVM_VMSAVE) "\n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1786 | "pop %%eax \n\t" |
| 1787 | #endif |
| 1788 | |
| 1789 | /* Save guest registers, load host registers */ |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 1790 | #ifdef CONFIG_X86_64 |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 1791 | "mov %%rbx, %c[rbx](%[svm]) \n\t" |
| 1792 | "mov %%rcx, %c[rcx](%[svm]) \n\t" |
| 1793 | "mov %%rdx, %c[rdx](%[svm]) \n\t" |
| 1794 | "mov %%rsi, %c[rsi](%[svm]) \n\t" |
| 1795 | "mov %%rdi, %c[rdi](%[svm]) \n\t" |
| 1796 | "mov %%rbp, %c[rbp](%[svm]) \n\t" |
| 1797 | "mov %%r8, %c[r8](%[svm]) \n\t" |
| 1798 | "mov %%r9, %c[r9](%[svm]) \n\t" |
| 1799 | "mov %%r10, %c[r10](%[svm]) \n\t" |
| 1800 | "mov %%r11, %c[r11](%[svm]) \n\t" |
| 1801 | "mov %%r12, %c[r12](%[svm]) \n\t" |
| 1802 | "mov %%r13, %c[r13](%[svm]) \n\t" |
| 1803 | "mov %%r14, %c[r14](%[svm]) \n\t" |
| 1804 | "mov %%r15, %c[r15](%[svm]) \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1805 | |
Laurent Vivier | 54a08c0 | 2007-10-25 14:18:53 +0200 | [diff] [blame] | 1806 | "pop %%rbp; \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1807 | #else |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 1808 | "mov %%ebx, %c[rbx](%[svm]) \n\t" |
| 1809 | "mov %%ecx, %c[rcx](%[svm]) \n\t" |
| 1810 | "mov %%edx, %c[rdx](%[svm]) \n\t" |
| 1811 | "mov %%esi, %c[rsi](%[svm]) \n\t" |
| 1812 | "mov %%edi, %c[rdi](%[svm]) \n\t" |
| 1813 | "mov %%ebp, %c[rbp](%[svm]) \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1814 | |
Laurent Vivier | fe7935d | 2007-10-25 14:18:54 +0200 | [diff] [blame] | 1815 | "pop %%ebp; \n\t" |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1816 | #endif |
| 1817 | : |
Rusty Russell | fb3f0f5 | 2007-07-27 17:16:56 +1000 | [diff] [blame] | 1818 | : [svm]"a"(svm), |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1819 | [vmcb]"i"(offsetof(struct vcpu_svm, vmcb_pa)), |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1820 | [rbx]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RBX])), |
| 1821 | [rcx]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RCX])), |
| 1822 | [rdx]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RDX])), |
| 1823 | [rsi]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RSI])), |
| 1824 | [rdi]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RDI])), |
| 1825 | [rbp]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RBP])) |
Avi Kivity | 05b3e0c | 2006-12-13 00:33:45 -0800 | [diff] [blame] | 1826 | #ifdef CONFIG_X86_64 |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1827 | , [r8]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R8])), |
| 1828 | [r9]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R9])), |
| 1829 | [r10]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R10])), |
| 1830 | [r11]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R11])), |
| 1831 | [r12]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R12])), |
| 1832 | [r13]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R13])), |
| 1833 | [r14]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R14])), |
| 1834 | [r15]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R15])) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1835 | #endif |
Laurent Vivier | 54a08c0 | 2007-10-25 14:18:53 +0200 | [diff] [blame] | 1836 | : "cc", "memory" |
| 1837 | #ifdef CONFIG_X86_64 |
| 1838 | , "rbx", "rcx", "rdx", "rsi", "rdi" |
| 1839 | , "r8", "r9", "r10", "r11" , "r12", "r13", "r14", "r15" |
Laurent Vivier | fe7935d | 2007-10-25 14:18:54 +0200 | [diff] [blame] | 1840 | #else |
| 1841 | , "ebx", "ecx", "edx" , "esi", "edi" |
Laurent Vivier | 54a08c0 | 2007-10-25 14:18:53 +0200 | [diff] [blame] | 1842 | #endif |
| 1843 | ); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1844 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1845 | if ((svm->vmcb->save.dr7 & 0xff)) |
| 1846 | load_db_regs(svm->host_db_regs); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1847 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 1848 | vcpu->arch.cr2 = svm->vmcb->save.cr2; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1849 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1850 | write_dr6(svm->host_dr6); |
| 1851 | write_dr7(svm->host_dr7); |
| 1852 | kvm_write_cr2(svm->host_cr2); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1853 | |
Avi Kivity | d6e88ae | 2008-07-10 16:53:33 +0300 | [diff] [blame] | 1854 | kvm_load_fs(fs_selector); |
| 1855 | kvm_load_gs(gs_selector); |
| 1856 | kvm_load_ldt(ldt_selector); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1857 | load_host_msrs(vcpu); |
| 1858 | |
| 1859 | reload_tss(vcpu); |
| 1860 | |
Avi Kivity | 56ba47d | 2007-11-07 17:14:18 +0200 | [diff] [blame] | 1861 | local_irq_disable(); |
| 1862 | |
| 1863 | stgi(); |
| 1864 | |
Joerg Roedel | d7bf822 | 2008-04-16 16:51:17 +0200 | [diff] [blame] | 1865 | sync_cr8_to_lapic(vcpu); |
| 1866 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1867 | svm->next_rip = 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1868 | } |
| 1869 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1870 | static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root) |
| 1871 | { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1872 | struct vcpu_svm *svm = to_svm(vcpu); |
| 1873 | |
Joerg Roedel | 709ddeb | 2008-02-07 13:47:45 +0100 | [diff] [blame] | 1874 | if (npt_enabled) { |
| 1875 | svm->vmcb->control.nested_cr3 = root; |
| 1876 | force_new_asid(vcpu); |
| 1877 | return; |
| 1878 | } |
| 1879 | |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1880 | svm->vmcb->save.cr3 = root; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1881 | force_new_asid(vcpu); |
Anthony Liguori | 7807fa6 | 2007-04-23 09:17:21 -0500 | [diff] [blame] | 1882 | |
| 1883 | if (vcpu->fpu_active) { |
Gregory Haskins | a2fa3e9 | 2007-07-27 08:13:10 -0400 | [diff] [blame] | 1884 | svm->vmcb->control.intercept_exceptions |= (1 << NM_VECTOR); |
| 1885 | svm->vmcb->save.cr0 |= X86_CR0_TS; |
Anthony Liguori | 7807fa6 | 2007-04-23 09:17:21 -0500 | [diff] [blame] | 1886 | vcpu->fpu_active = 0; |
| 1887 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1888 | } |
| 1889 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1890 | static int is_disabled(void) |
| 1891 | { |
Joerg Roedel | 6031a61 | 2007-06-22 12:29:50 +0300 | [diff] [blame] | 1892 | u64 vm_cr; |
| 1893 | |
| 1894 | rdmsrl(MSR_VM_CR, vm_cr); |
| 1895 | if (vm_cr & (1 << SVM_VM_CR_SVM_DISABLE)) |
| 1896 | return 1; |
| 1897 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1898 | return 0; |
| 1899 | } |
| 1900 | |
Ingo Molnar | 102d832 | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 1901 | static void |
| 1902 | svm_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall) |
| 1903 | { |
| 1904 | /* |
| 1905 | * Patch in the VMMCALL instruction: |
| 1906 | */ |
| 1907 | hypercall[0] = 0x0f; |
| 1908 | hypercall[1] = 0x01; |
| 1909 | hypercall[2] = 0xd9; |
Ingo Molnar | 102d832 | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 1910 | } |
| 1911 | |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1912 | static void svm_check_processor_compat(void *rtn) |
| 1913 | { |
| 1914 | *(int *)rtn = 0; |
| 1915 | } |
| 1916 | |
Avi Kivity | 774ead3 | 2007-12-26 13:57:04 +0200 | [diff] [blame] | 1917 | static bool svm_cpu_has_accelerated_tpr(void) |
| 1918 | { |
| 1919 | return false; |
| 1920 | } |
| 1921 | |
Sheng Yang | 67253af | 2008-04-25 10:20:22 +0800 | [diff] [blame] | 1922 | static int get_npt_level(void) |
| 1923 | { |
| 1924 | #ifdef CONFIG_X86_64 |
| 1925 | return PT64_ROOT_LEVEL; |
| 1926 | #else |
| 1927 | return PT32E_ROOT_LEVEL; |
| 1928 | #endif |
| 1929 | } |
| 1930 | |
Christian Ehrhardt | cbdd1be | 2007-09-09 15:41:59 +0300 | [diff] [blame] | 1931 | static struct kvm_x86_ops svm_x86_ops = { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1932 | .cpu_has_kvm_support = has_svm, |
| 1933 | .disabled_by_bios = is_disabled, |
| 1934 | .hardware_setup = svm_hardware_setup, |
| 1935 | .hardware_unsetup = svm_hardware_unsetup, |
Yang, Sheng | 002c7f7 | 2007-07-31 14:23:01 +0300 | [diff] [blame] | 1936 | .check_processor_compatibility = svm_check_processor_compat, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1937 | .hardware_enable = svm_hardware_enable, |
| 1938 | .hardware_disable = svm_hardware_disable, |
Avi Kivity | 774ead3 | 2007-12-26 13:57:04 +0200 | [diff] [blame] | 1939 | .cpu_has_accelerated_tpr = svm_cpu_has_accelerated_tpr, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1940 | |
| 1941 | .vcpu_create = svm_create_vcpu, |
| 1942 | .vcpu_free = svm_free_vcpu, |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1943 | .vcpu_reset = svm_vcpu_reset, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1944 | |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1945 | .prepare_guest_switch = svm_prepare_guest_switch, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1946 | .vcpu_load = svm_vcpu_load, |
| 1947 | .vcpu_put = svm_vcpu_put, |
| 1948 | |
| 1949 | .set_guest_debug = svm_guest_debug, |
| 1950 | .get_msr = svm_get_msr, |
| 1951 | .set_msr = svm_set_msr, |
| 1952 | .get_segment_base = svm_get_segment_base, |
| 1953 | .get_segment = svm_get_segment, |
| 1954 | .set_segment = svm_set_segment, |
Izik Eidus | 2e4d265 | 2008-03-24 19:38:34 +0200 | [diff] [blame] | 1955 | .get_cpl = svm_get_cpl, |
Rusty Russell | 1747fb7 | 2007-09-06 01:21:32 +1000 | [diff] [blame] | 1956 | .get_cs_db_l_bits = kvm_get_cs_db_l_bits, |
Anthony Liguori | 25c4c27 | 2007-04-27 09:29:21 +0300 | [diff] [blame] | 1957 | .decache_cr4_guest_bits = svm_decache_cr4_guest_bits, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1958 | .set_cr0 = svm_set_cr0, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1959 | .set_cr3 = svm_set_cr3, |
| 1960 | .set_cr4 = svm_set_cr4, |
| 1961 | .set_efer = svm_set_efer, |
| 1962 | .get_idt = svm_get_idt, |
| 1963 | .set_idt = svm_set_idt, |
| 1964 | .get_gdt = svm_get_gdt, |
| 1965 | .set_gdt = svm_set_gdt, |
| 1966 | .get_dr = svm_get_dr, |
| 1967 | .set_dr = svm_set_dr, |
| 1968 | .cache_regs = svm_cache_regs, |
| 1969 | .decache_regs = svm_decache_regs, |
| 1970 | .get_rflags = svm_get_rflags, |
| 1971 | .set_rflags = svm_set_rflags, |
| 1972 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1973 | .tlb_flush = svm_flush_tlb, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1974 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1975 | .run = svm_vcpu_run, |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1976 | .handle_exit = handle_exit, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1977 | .skip_emulated_instruction = skip_emulated_instruction, |
Ingo Molnar | 102d832 | 2007-02-19 14:37:47 +0200 | [diff] [blame] | 1978 | .patch_hypercall = svm_patch_hypercall, |
Eddie Dong | 2a8067f | 2007-08-06 16:29:07 +0300 | [diff] [blame] | 1979 | .get_irq = svm_get_irq, |
| 1980 | .set_irq = svm_set_irq, |
Avi Kivity | 298101d | 2007-11-25 13:41:11 +0200 | [diff] [blame] | 1981 | .queue_exception = svm_queue_exception, |
| 1982 | .exception_injected = svm_exception_injected, |
Avi Kivity | 04d2cc7 | 2007-09-10 18:10:54 +0300 | [diff] [blame] | 1983 | .inject_pending_irq = svm_intr_assist, |
| 1984 | .inject_pending_vectors = do_interrupt_requests, |
Izik Eidus | cbc9402 | 2007-10-25 00:29:55 +0200 | [diff] [blame] | 1985 | |
| 1986 | .set_tss_addr = svm_set_tss_addr, |
Sheng Yang | 67253af | 2008-04-25 10:20:22 +0800 | [diff] [blame] | 1987 | .get_tdp_level = get_npt_level, |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1988 | }; |
| 1989 | |
| 1990 | static int __init svm_init(void) |
| 1991 | { |
Zhang Xiantao | cb498ea | 2007-11-14 20:39:31 +0800 | [diff] [blame] | 1992 | return kvm_init(&svm_x86_ops, sizeof(struct vcpu_svm), |
Rusty Russell | c16f862 | 2007-07-30 21:12:19 +1000 | [diff] [blame] | 1993 | THIS_MODULE); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1994 | } |
| 1995 | |
| 1996 | static void __exit svm_exit(void) |
| 1997 | { |
Zhang Xiantao | cb498ea | 2007-11-14 20:39:31 +0800 | [diff] [blame] | 1998 | kvm_exit(); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1999 | } |
| 2000 | |
| 2001 | module_init(svm_init) |
| 2002 | module_exit(svm_exit) |