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Carsten Otte043405e2007-10-10 17:16:19 +02001#/*
2 * Kernel-based Virtual Machine driver for Linux
3 *
4 * This header defines architecture specific interfaces, x86 version
5 *
6 * This work is licensed under the terms of the GNU GPL, version 2. See
7 * the COPYING file in the top-level directory.
8 *
9 */
10
11#ifndef KVM_X86_H
12#define KVM_X86_H
13
14#include "kvm.h"
15
Zhang Xiantao34c16ee2007-10-20 15:34:38 +080016#include <linux/types.h>
17#include <linux/mm.h>
18
19#include <linux/kvm.h>
20#include <linux/kvm_para.h>
21
Zhang Xiantaocd6e8f82007-11-19 14:33:37 +080022#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
23#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
24#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS|0xFFFFFF0000000000ULL)
25
26#define KVM_GUEST_CR0_MASK \
27 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
28 | X86_CR0_NW | X86_CR0_CD)
29#define KVM_VM_CR0_ALWAYS_ON \
30 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
31 | X86_CR0_MP)
32#define KVM_GUEST_CR4_MASK \
33 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
34#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
35#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
36
37#define INVALID_PAGE (~(hpa_t)0)
38#define UNMAPPED_GVA (~(gpa_t)0)
39
40#define DE_VECTOR 0
41#define UD_VECTOR 6
42#define NM_VECTOR 7
43#define DF_VECTOR 8
44#define TS_VECTOR 10
45#define NP_VECTOR 11
46#define SS_VECTOR 12
47#define GP_VECTOR 13
48#define PF_VECTOR 14
49
50#define SELECTOR_TI_MASK (1 << 2)
51#define SELECTOR_RPL_MASK 0x03
52
53#define IOPL_SHIFT 12
54
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +080055extern spinlock_t kvm_lock;
56extern struct list_head vm_list;
57
Zhang Xiantao34c16ee2007-10-20 15:34:38 +080058struct kvm_vcpu {
59 KVM_VCPU_COMM;
60 u64 host_tsc;
61 int interrupt_window_open;
62 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
63 DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
64 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
65 unsigned long rip; /* needs vcpu_load_rsp_rip() */
66
67 unsigned long cr0;
68 unsigned long cr2;
69 unsigned long cr3;
70 unsigned long cr4;
71 unsigned long cr8;
72 u64 pdptrs[4]; /* pae */
73 u64 shadow_efer;
74 u64 apic_base;
75 struct kvm_lapic *apic; /* kernel irqchip context */
76#define VCPU_MP_STATE_RUNNABLE 0
77#define VCPU_MP_STATE_UNINITIALIZED 1
78#define VCPU_MP_STATE_INIT_RECEIVED 2
79#define VCPU_MP_STATE_SIPI_RECEIVED 3
80#define VCPU_MP_STATE_HALTED 4
81 int mp_state;
82 int sipi_vector;
83 u64 ia32_misc_enable_msr;
84
85 struct kvm_mmu mmu;
86
87 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
88 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
89 struct kvm_mmu_memory_cache mmu_page_cache;
90 struct kvm_mmu_memory_cache mmu_page_header_cache;
91
92 gfn_t last_pt_write_gfn;
93 int last_pt_write_count;
94 u64 *last_pte_updated;
95
96
97 struct i387_fxsave_struct host_fx_image;
98 struct i387_fxsave_struct guest_fx_image;
99
100 gva_t mmio_fault_cr2;
101 struct kvm_pio_request pio;
102 void *pio_data;
103
104 struct {
105 int active;
106 u8 save_iopl;
107 struct kvm_save_segment {
108 u16 selector;
109 unsigned long base;
110 u32 limit;
111 u32 ar;
112 } tr, es, ds, fs, gs;
113 } rmode;
114 int halt_request; /* real mode on Intel only */
115
116 int cpuid_nent;
117 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
118
119 /* emulate context */
120
121 struct x86_emulate_ctxt emulate_ctxt;
122};
123
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800124struct kvm_x86_ops {
125 int (*cpu_has_kvm_support)(void); /* __init */
126 int (*disabled_by_bios)(void); /* __init */
127 void (*hardware_enable)(void *dummy); /* __init */
128 void (*hardware_disable)(void *dummy);
129 void (*check_processor_compatibility)(void *rtn);
130 int (*hardware_setup)(void); /* __init */
131 void (*hardware_unsetup)(void); /* __exit */
132
133 /* Create, but do not attach this VCPU */
134 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
135 void (*vcpu_free)(struct kvm_vcpu *vcpu);
136 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
137
138 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
139 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
140 void (*vcpu_put)(struct kvm_vcpu *vcpu);
141 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
142
143 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
144 struct kvm_debug_guest *dbg);
145 void (*guest_debug_pre)(struct kvm_vcpu *vcpu);
146 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
147 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
148 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
149 void (*get_segment)(struct kvm_vcpu *vcpu,
150 struct kvm_segment *var, int seg);
151 void (*set_segment)(struct kvm_vcpu *vcpu,
152 struct kvm_segment *var, int seg);
153 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
154 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
155 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
156 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
157 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
158 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
159 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
160 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
161 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
162 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
163 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
164 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
165 int *exception);
166 void (*cache_regs)(struct kvm_vcpu *vcpu);
167 void (*decache_regs)(struct kvm_vcpu *vcpu);
168 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
169 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
170
171 void (*tlb_flush)(struct kvm_vcpu *vcpu);
172 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
173 unsigned long addr, u32 err_code);
174
175 void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
176
177 void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
178 int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
179 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
180 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
181 unsigned char *hypercall_addr);
182 int (*get_irq)(struct kvm_vcpu *vcpu);
183 void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
184 void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
185 void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
186 struct kvm_run *run);
187
188 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
189};
190
Zhang Xiantao97896d02007-11-14 20:09:30 +0800191extern struct kvm_x86_ops *kvm_x86_ops;
192
Avi Kivity30677142007-10-28 18:48:59 +0200193int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800194
195static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
196{
197 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
198 __kvm_mmu_free_some_pages(vcpu);
199}
200
201static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
202{
203 if (likely(vcpu->mmu.root_hpa != INVALID_PAGE))
204 return 0;
205
206 return kvm_mmu_load(vcpu);
207}
208
209static inline int is_long_mode(struct kvm_vcpu *vcpu)
210{
211#ifdef CONFIG_X86_64
212 return vcpu->shadow_efer & EFER_LME;
213#else
214 return 0;
215#endif
216}
217
218static inline int is_pae(struct kvm_vcpu *vcpu)
219{
220 return vcpu->cr4 & X86_CR4_PAE;
221}
222
223static inline int is_pse(struct kvm_vcpu *vcpu)
224{
225 return vcpu->cr4 & X86_CR4_PSE;
226}
227
228static inline int is_paging(struct kvm_vcpu *vcpu)
229{
230 return vcpu->cr0 & X86_CR0_PG;
231}
232
Carsten Ottea03490e2007-10-29 16:09:35 +0100233int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
Carsten Ottede7d7892007-10-30 18:44:25 +0100234int complete_pio(struct kvm_vcpu *vcpu);
Carsten Otte043405e2007-10-10 17:16:19 +0200235#endif