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Avi Kivity6aa8b732006-12-10 02:21:36 -08001#ifndef __KVM_H
2#define __KVM_H
3
4/*
5 * This work is licensed under the terms of the GNU GPL, version 2. See
6 * the COPYING file in the top-level directory.
7 */
8
9#include <linux/types.h>
10#include <linux/list.h>
11#include <linux/mutex.h>
12#include <linux/spinlock.h>
13#include <linux/mm.h>
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040014#include <asm/signal.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080015
16#include "vmx.h"
17#include <linux/kvm.h>
Ingo Molnar102d8322007-02-19 14:37:47 +020018#include <linux/kvm_para.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080019
20#define CR0_PE_MASK (1ULL << 0)
21#define CR0_TS_MASK (1ULL << 3)
22#define CR0_NE_MASK (1ULL << 5)
23#define CR0_WP_MASK (1ULL << 16)
24#define CR0_NW_MASK (1ULL << 29)
25#define CR0_CD_MASK (1ULL << 30)
26#define CR0_PG_MASK (1ULL << 31)
27
28#define CR3_WPT_MASK (1ULL << 3)
29#define CR3_PCD_MASK (1ULL << 4)
30
31#define CR3_RESEVED_BITS 0x07ULL
32#define CR3_L_MODE_RESEVED_BITS (~((1ULL << 40) - 1) | 0x0fe7ULL)
33#define CR3_FLAGS_MASK ((1ULL << 5) - 1)
34
35#define CR4_VME_MASK (1ULL << 0)
36#define CR4_PSE_MASK (1ULL << 4)
37#define CR4_PAE_MASK (1ULL << 5)
38#define CR4_PGE_MASK (1ULL << 7)
39#define CR4_VMXE_MASK (1ULL << 13)
40
41#define KVM_GUEST_CR0_MASK \
42 (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK \
43 | CR0_NW_MASK | CR0_CD_MASK)
44#define KVM_VM_CR0_ALWAYS_ON \
45 (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK)
46#define KVM_GUEST_CR4_MASK \
47 (CR4_PSE_MASK | CR4_PAE_MASK | CR4_PGE_MASK | CR4_VMXE_MASK | CR4_VME_MASK)
48#define KVM_PMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK)
49#define KVM_RMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK | CR4_VME_MASK)
50
51#define INVALID_PAGE (~(hpa_t)0)
52#define UNMAPPED_GVA (~(gpa_t)0)
53
54#define KVM_MAX_VCPUS 1
Avi Kivitye8207542007-03-30 16:54:30 +030055#define KVM_ALIAS_SLOTS 4
Avi Kivity6aa8b732006-12-10 02:21:36 -080056#define KVM_MEMORY_SLOTS 4
57#define KVM_NUM_MMU_PAGES 256
Avi Kivityebeace82007-01-05 16:36:47 -080058#define KVM_MIN_FREE_MMU_PAGES 5
59#define KVM_REFILL_PAGES 25
Avi Kivity06465c52007-02-28 20:46:53 +020060#define KVM_MAX_CPUID_ENTRIES 40
Avi Kivity6aa8b732006-12-10 02:21:36 -080061
62#define FX_IMAGE_SIZE 512
63#define FX_IMAGE_ALIGN 16
64#define FX_BUF_SIZE (2 * FX_IMAGE_SIZE + FX_IMAGE_ALIGN)
65
66#define DE_VECTOR 0
Anthony Liguori7807fa62007-04-23 09:17:21 -050067#define NM_VECTOR 7
Avi Kivity6aa8b732006-12-10 02:21:36 -080068#define DF_VECTOR 8
69#define TS_VECTOR 10
70#define NP_VECTOR 11
71#define SS_VECTOR 12
72#define GP_VECTOR 13
73#define PF_VECTOR 14
74
75#define SELECTOR_TI_MASK (1 << 2)
76#define SELECTOR_RPL_MASK 0x03
77
78#define IOPL_SHIFT 12
79
Avi Kivity039576c2007-03-20 12:46:50 +020080#define KVM_PIO_PAGE_OFFSET 1
81
Avi Kivity6aa8b732006-12-10 02:21:36 -080082/*
83 * Address types:
84 *
85 * gva - guest virtual address
86 * gpa - guest physical address
87 * gfn - guest frame number
88 * hva - host virtual address
89 * hpa - host physical address
90 * hfn - host frame number
91 */
92
93typedef unsigned long gva_t;
94typedef u64 gpa_t;
95typedef unsigned long gfn_t;
96
97typedef unsigned long hva_t;
98typedef u64 hpa_t;
99typedef unsigned long hfn_t;
100
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800101#define NR_PTE_CHAIN_ENTRIES 5
102
103struct kvm_pte_chain {
104 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
105 struct hlist_node link;
106};
107
108/*
109 * kvm_mmu_page_role, below, is defined as:
110 *
111 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
112 * bits 4:7 - page table level for this shadow (1-4)
113 * bits 8:9 - page table quadrant for 2-level guests
114 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
Avi Kivityd28c6cfb2007-03-23 09:55:25 +0200115 * bits 17:18 - "access" - the user and writable bits of a huge page pde
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800116 */
117union kvm_mmu_page_role {
118 unsigned word;
119 struct {
120 unsigned glevels : 4;
121 unsigned level : 4;
122 unsigned quadrant : 2;
123 unsigned pad_for_nice_hex_output : 6;
124 unsigned metaphysical : 1;
Avi Kivityd28c6cfb2007-03-23 09:55:25 +0200125 unsigned hugepage_access : 2;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800126 };
127};
128
Avi Kivity6aa8b732006-12-10 02:21:36 -0800129struct kvm_mmu_page {
130 struct list_head link;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800131 struct hlist_node hash_link;
132
133 /*
134 * The following two entries are used to key the shadow page in the
135 * hash table.
136 */
137 gfn_t gfn;
138 union kvm_mmu_page_role role;
139
Avi Kivity6aa8b732006-12-10 02:21:36 -0800140 hpa_t page_hpa;
141 unsigned long slot_bitmap; /* One bit set per slot which has memory
142 * in this shadow page.
143 */
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800144 int multimapped; /* More than one parent_pte? */
Avi Kivity3bb65a22007-01-05 16:36:51 -0800145 int root_count; /* Currently serving as active root */
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800146 union {
147 u64 *parent_pte; /* !multimapped */
148 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
149 };
Avi Kivity6aa8b732006-12-10 02:21:36 -0800150};
151
152struct vmcs {
153 u32 revision_id;
154 u32 abort;
155 char data[0];
156};
157
158#define vmx_msr_entry kvm_msr_entry
159
160struct kvm_vcpu;
161
162/*
163 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
164 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
165 * mode.
166 */
167struct kvm_mmu {
168 void (*new_cr3)(struct kvm_vcpu *vcpu);
169 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800170 void (*free)(struct kvm_vcpu *vcpu);
171 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
172 hpa_t root_hpa;
173 int root_level;
174 int shadow_root_level;
Avi Kivity17ac10a2007-01-05 16:36:40 -0800175
176 u64 *pae_root;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800177};
178
Avi Kivity714b93d2007-01-05 16:36:53 -0800179#define KVM_NR_MEM_OBJS 20
180
181struct kvm_mmu_memory_cache {
182 int nobjs;
183 void *objects[KVM_NR_MEM_OBJS];
184};
185
186/*
187 * We don't want allocation failures within the mmu code, so we preallocate
188 * enough memory for a single page fault in a cache.
189 */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800190struct kvm_guest_debug {
191 int enabled;
192 unsigned long bp[4];
193 int singlestep;
194};
195
196enum {
197 VCPU_REGS_RAX = 0,
198 VCPU_REGS_RCX = 1,
199 VCPU_REGS_RDX = 2,
200 VCPU_REGS_RBX = 3,
201 VCPU_REGS_RSP = 4,
202 VCPU_REGS_RBP = 5,
203 VCPU_REGS_RSI = 6,
204 VCPU_REGS_RDI = 7,
Avi Kivity05b3e0c2006-12-13 00:33:45 -0800205#ifdef CONFIG_X86_64
Avi Kivity6aa8b732006-12-10 02:21:36 -0800206 VCPU_REGS_R8 = 8,
207 VCPU_REGS_R9 = 9,
208 VCPU_REGS_R10 = 10,
209 VCPU_REGS_R11 = 11,
210 VCPU_REGS_R12 = 12,
211 VCPU_REGS_R13 = 13,
212 VCPU_REGS_R14 = 14,
213 VCPU_REGS_R15 = 15,
214#endif
215 NR_VCPU_REGS
216};
217
218enum {
219 VCPU_SREG_CS,
220 VCPU_SREG_DS,
221 VCPU_SREG_ES,
222 VCPU_SREG_FS,
223 VCPU_SREG_GS,
224 VCPU_SREG_SS,
225 VCPU_SREG_TR,
226 VCPU_SREG_LDTR,
227};
228
Avi Kivity039576c2007-03-20 12:46:50 +0200229struct kvm_pio_request {
230 unsigned long count;
231 int cur_count;
232 struct page *guest_pages[2];
233 unsigned guest_page_offset;
234 int in;
235 int size;
236 int string;
237 int down;
238 int rep;
239};
240
Avi Kivity1165f5f2007-04-19 17:27:43 +0300241struct kvm_stat {
242 u32 pf_fixed;
243 u32 pf_guest;
244 u32 tlb_flush;
245 u32 invlpg;
246
247 u32 exits;
248 u32 io_exits;
249 u32 mmio_exits;
250 u32 signal_exits;
251 u32 irq_window_exits;
252 u32 halt_exits;
253 u32 request_irq_exits;
254 u32 irq_exits;
255};
256
Avi Kivity6aa8b732006-12-10 02:21:36 -0800257struct kvm_vcpu {
258 struct kvm *kvm;
259 union {
260 struct vmcs *vmcs;
261 struct vcpu_svm *svm;
262 };
263 struct mutex mutex;
264 int cpu;
265 int launched;
Avi Kivity0cc50642007-03-25 12:07:27 +0200266 u64 host_tsc;
Avi Kivity9a2bb7f2007-02-22 12:58:31 +0200267 struct kvm_run *run;
Dor Laorc1150d82007-01-05 16:36:24 -0800268 int interrupt_window_open;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800269 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
270#define NR_IRQ_WORDS KVM_IRQ_BITMAP_SIZE(unsigned long)
271 unsigned long irq_pending[NR_IRQ_WORDS];
272 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
273 unsigned long rip; /* needs vcpu_load_rsp_rip() */
274
275 unsigned long cr0;
276 unsigned long cr2;
277 unsigned long cr3;
Ingo Molnar102d8322007-02-19 14:37:47 +0200278 gpa_t para_state_gpa;
279 struct page *para_state_page;
280 gpa_t hypercall_gpa;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800281 unsigned long cr4;
282 unsigned long cr8;
Avi Kivity1342d352007-01-05 16:36:39 -0800283 u64 pdptrs[4]; /* pae */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800284 u64 shadow_efer;
285 u64 apic_base;
Avi Kivity6f00e682007-01-26 00:56:40 -0800286 u64 ia32_misc_enable_msr;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800287 int nmsrs;
288 struct vmx_msr_entry *guest_msrs;
289 struct vmx_msr_entry *host_msrs;
290
291 struct list_head free_pages;
292 struct kvm_mmu_page page_header_buf[KVM_NUM_MMU_PAGES];
293 struct kvm_mmu mmu;
294
Avi Kivity714b93d2007-01-05 16:36:53 -0800295 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
296 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
297
Avi Kivity86a5ba02007-01-05 16:36:50 -0800298 gfn_t last_pt_write_gfn;
299 int last_pt_write_count;
300
Avi Kivity6aa8b732006-12-10 02:21:36 -0800301 struct kvm_guest_debug guest_debug;
302
303 char fx_buf[FX_BUF_SIZE];
304 char *host_fx_image;
305 char *guest_fx_image;
Anthony Liguori7807fa62007-04-23 09:17:21 -0500306 int fpu_active;
Avi Kivity7702fd12007-06-14 16:27:40 +0300307 int guest_fpu_loaded;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800308
309 int mmio_needed;
310 int mmio_read_completed;
311 int mmio_is_write;
312 int mmio_size;
313 unsigned char mmio_data[8];
314 gpa_t mmio_phys_addr;
Avi Kivitye7df56e2007-03-14 15:54:54 +0200315 gva_t mmio_fault_cr2;
Avi Kivity039576c2007-03-20 12:46:50 +0200316 struct kvm_pio_request pio;
317 void *pio_data;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800318
Avi Kivity1961d272007-03-05 19:46:05 +0200319 int sigset_active;
320 sigset_t sigset;
321
Avi Kivity1165f5f2007-04-19 17:27:43 +0300322 struct kvm_stat stat;
323
Avi Kivity6aa8b732006-12-10 02:21:36 -0800324 struct {
325 int active;
326 u8 save_iopl;
327 struct kvm_save_segment {
328 u16 selector;
329 unsigned long base;
330 u32 limit;
331 u32 ar;
332 } tr, es, ds, fs, gs;
333 } rmode;
Avi Kivity06465c52007-02-28 20:46:53 +0200334
335 int cpuid_nent;
336 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
Avi Kivity6aa8b732006-12-10 02:21:36 -0800337};
338
Avi Kivitye8207542007-03-30 16:54:30 +0300339struct kvm_mem_alias {
340 gfn_t base_gfn;
341 unsigned long npages;
342 gfn_t target_gfn;
343};
344
Avi Kivity6aa8b732006-12-10 02:21:36 -0800345struct kvm_memory_slot {
346 gfn_t base_gfn;
347 unsigned long npages;
348 unsigned long flags;
349 struct page **phys_mem;
350 unsigned long *dirty_bitmap;
351};
352
353struct kvm {
354 spinlock_t lock; /* protects everything except vcpus */
Avi Kivitye8207542007-03-30 16:54:30 +0300355 int naliases;
356 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
Avi Kivity6aa8b732006-12-10 02:21:36 -0800357 int nmemslots;
358 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800359 /*
360 * Hash table of struct kvm_mmu_page.
361 */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800362 struct list_head active_mmu_pages;
Avi Kivityebeace82007-01-05 16:36:47 -0800363 int n_free_mmu_pages;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800364 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
Avi Kivity6aa8b732006-12-10 02:21:36 -0800365 struct kvm_vcpu vcpus[KVM_MAX_VCPUS];
366 int memory_config_version;
367 int busy;
Avi Kivitycd4a4e52007-01-05 16:36:38 -0800368 unsigned long rmap_overflow;
Avi Kivity133de902007-02-12 00:54:44 -0800369 struct list_head vm_list;
Avi Kivitybccf2152007-02-21 18:04:26 +0200370 struct file *filp;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800371};
372
Avi Kivity6aa8b732006-12-10 02:21:36 -0800373struct descriptor_table {
374 u16 limit;
375 unsigned long base;
376} __attribute__((packed));
377
378struct kvm_arch_ops {
379 int (*cpu_has_kvm_support)(void); /* __init */
380 int (*disabled_by_bios)(void); /* __init */
381 void (*hardware_enable)(void *dummy); /* __init */
382 void (*hardware_disable)(void *dummy);
383 int (*hardware_setup)(void); /* __init */
384 void (*hardware_unsetup)(void); /* __exit */
385
386 int (*vcpu_create)(struct kvm_vcpu *vcpu);
387 void (*vcpu_free)(struct kvm_vcpu *vcpu);
388
Avi Kivitybccf2152007-02-21 18:04:26 +0200389 void (*vcpu_load)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800390 void (*vcpu_put)(struct kvm_vcpu *vcpu);
Avi Kivity774c47f2007-02-12 00:54:47 -0800391 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800392
393 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
394 struct kvm_debug_guest *dbg);
395 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
396 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
397 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
398 void (*get_segment)(struct kvm_vcpu *vcpu,
399 struct kvm_segment *var, int seg);
400 void (*set_segment)(struct kvm_vcpu *vcpu,
401 struct kvm_segment *var, int seg);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800402 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
Anthony Liguori25c4c272007-04-27 09:29:21 +0300403 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800404 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800405 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
406 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
407 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
408 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
409 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
410 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
411 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
412 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
413 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
414 int *exception);
415 void (*cache_regs)(struct kvm_vcpu *vcpu);
416 void (*decache_regs)(struct kvm_vcpu *vcpu);
417 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
418 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
419
420 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr);
421 void (*tlb_flush)(struct kvm_vcpu *vcpu);
422 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
423 unsigned long addr, u32 err_code);
424
425 void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
426
427 int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
428 int (*vcpu_setup)(struct kvm_vcpu *vcpu);
429 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
Ingo Molnar102d8322007-02-19 14:37:47 +0200430 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
431 unsigned char *hypercall_addr);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800432};
433
Avi Kivity6aa8b732006-12-10 02:21:36 -0800434extern struct kvm_arch_ops *kvm_arch_ops;
435
436#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
437#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
438
439int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module);
440void kvm_exit_arch(void);
441
Avi Kivityb5a33a72007-04-15 16:31:09 +0300442int kvm_mmu_module_init(void);
443void kvm_mmu_module_exit(void);
444
Avi Kivity6aa8b732006-12-10 02:21:36 -0800445void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
Ingo Molnar8018c272006-12-29 16:50:01 -0800446int kvm_mmu_create(struct kvm_vcpu *vcpu);
447int kvm_mmu_setup(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800448
449int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
Avi Kivity714b93d2007-01-05 16:36:53 -0800450void kvm_mmu_slot_remove_write_access(struct kvm_vcpu *vcpu, int slot);
Dor Laore0fa8262007-03-30 13:06:33 +0300451void kvm_mmu_zap_all(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800452
453hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
454#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
455#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
456static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
457hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivity039576c2007-03-20 12:46:50 +0200458struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800459
460void kvm_emulator_want_group7_invlpg(void);
461
462extern hpa_t bad_page_address;
463
Avi Kivity954bbbc2007-03-30 14:02:32 +0300464struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800465struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
466void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
467
468enum emulation_result {
469 EMULATE_DONE, /* no further processing */
470 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
471 EMULATE_FAIL, /* can't emulate this instruction */
472};
473
474int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
475 unsigned long cr2, u16 error_code);
476void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
477void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
478void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
479 unsigned long *rflags);
480
481unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
482void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
483 unsigned long *rflags);
484
485struct x86_emulate_ctxt;
486
Avi Kivity039576c2007-03-20 12:46:50 +0200487int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
488 int size, unsigned long count, int string, int down,
489 gva_t address, int rep, unsigned port);
Avi Kivity06465c52007-02-28 20:46:53 +0200490void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800491int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
492int emulate_clts(struct kvm_vcpu *vcpu);
493int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
494 unsigned long *dest);
495int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
496 unsigned long value);
497
498void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
499void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
500void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
501void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
502void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
503
Avi Kivity3bab1f52006-12-29 16:49:48 -0800504int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
505int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800506
507void fx_init(struct kvm_vcpu *vcpu);
508
509void load_msrs(struct vmx_msr_entry *e, int n);
510void save_msrs(struct vmx_msr_entry *e, int n);
511void kvm_resched(struct kvm_vcpu *vcpu);
Avi Kivity7702fd12007-06-14 16:27:40 +0300512void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
513void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800514
515int kvm_read_guest(struct kvm_vcpu *vcpu,
516 gva_t addr,
517 unsigned long size,
518 void *dest);
519
520int kvm_write_guest(struct kvm_vcpu *vcpu,
521 gva_t addr,
522 unsigned long size,
523 void *data);
524
525unsigned long segment_base(u16 selector);
526
Avi Kivityda4a00f2007-01-05 16:36:44 -0800527void kvm_mmu_pre_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes);
528void kvm_mmu_post_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes);
Avi Kivitya4360362007-01-05 16:36:45 -0800529int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivityebeace82007-01-05 16:36:47 -0800530void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
531
Avi Kivity270fd9b2007-02-19 14:37:47 +0200532int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
533
Avi Kivityebeace82007-01-05 16:36:47 -0800534static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
535 u32 error_code)
536{
537 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
538 kvm_mmu_free_some_pages(vcpu);
539 return vcpu->mmu.page_fault(vcpu, gva, error_code);
540}
Avi Kivityda4a00f2007-01-05 16:36:44 -0800541
Avi Kivitya9058ec2006-12-29 16:49:37 -0800542static inline int is_long_mode(struct kvm_vcpu *vcpu)
543{
544#ifdef CONFIG_X86_64
545 return vcpu->shadow_efer & EFER_LME;
546#else
547 return 0;
548#endif
549}
550
Avi Kivity6aa8b732006-12-10 02:21:36 -0800551static inline int is_pae(struct kvm_vcpu *vcpu)
552{
553 return vcpu->cr4 & CR4_PAE_MASK;
554}
555
556static inline int is_pse(struct kvm_vcpu *vcpu)
557{
558 return vcpu->cr4 & CR4_PSE_MASK;
559}
560
561static inline int is_paging(struct kvm_vcpu *vcpu)
562{
563 return vcpu->cr0 & CR0_PG_MASK;
564}
565
566static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
567{
568 return slot - kvm->memslots;
569}
570
571static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
572{
573 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
574
Markus Rechberger5972e952007-02-19 14:37:47 +0200575 return (struct kvm_mmu_page *)page_private(page);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800576}
577
578static inline u16 read_fs(void)
579{
580 u16 seg;
581 asm ("mov %%fs, %0" : "=g"(seg));
582 return seg;
583}
584
585static inline u16 read_gs(void)
586{
587 u16 seg;
588 asm ("mov %%gs, %0" : "=g"(seg));
589 return seg;
590}
591
592static inline u16 read_ldt(void)
593{
594 u16 ldt;
595 asm ("sldt %0" : "=g"(ldt));
596 return ldt;
597}
598
599static inline void load_fs(u16 sel)
600{
601 asm ("mov %0, %%fs" : : "rm"(sel));
602}
603
604static inline void load_gs(u16 sel)
605{
606 asm ("mov %0, %%gs" : : "rm"(sel));
607}
608
609#ifndef load_ldt
610static inline void load_ldt(u16 sel)
611{
S.Caglar Onura0610dd2007-02-12 00:54:34 -0800612 asm ("lldt %0" : : "rm"(sel));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800613}
614#endif
615
616static inline void get_idt(struct descriptor_table *table)
617{
618 asm ("sidt %0" : "=m"(*table));
619}
620
621static inline void get_gdt(struct descriptor_table *table)
622{
623 asm ("sgdt %0" : "=m"(*table));
624}
625
626static inline unsigned long read_tr_base(void)
627{
628 u16 tr;
629 asm ("str %0" : "=g"(tr));
630 return segment_base(tr);
631}
632
Avi Kivity05b3e0c2006-12-13 00:33:45 -0800633#ifdef CONFIG_X86_64
Avi Kivity6aa8b732006-12-10 02:21:36 -0800634static inline unsigned long read_msr(unsigned long msr)
635{
636 u64 value;
637
638 rdmsrl(msr, value);
639 return value;
640}
641#endif
642
643static inline void fx_save(void *image)
644{
645 asm ("fxsave (%0)":: "r" (image));
646}
647
648static inline void fx_restore(void *image)
649{
650 asm ("fxrstor (%0)":: "r" (image));
651}
652
653static inline void fpu_init(void)
654{
655 asm ("finit");
656}
657
658static inline u32 get_rdx_init_val(void)
659{
660 return 0x600; /* P6 family */
661}
662
663#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
664#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
665#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
666#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
667#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
668#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
669#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
670#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
671#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
672
673#define MSR_IA32_TIME_STAMP_COUNTER 0x010
674
675#define TSS_IOPB_BASE_OFFSET 0x66
676#define TSS_BASE_SIZE 0x68
677#define TSS_IOPB_SIZE (65536 / 8)
678#define TSS_REDIRECTION_SIZE (256 / 8)
679#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
680
Avi Kivity6aa8b732006-12-10 02:21:36 -0800681#endif