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6aa8b732 AK |
1 | #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> | |
e8edc6e0 | 14 | #include <asm/signal.h> |
6aa8b732 AK |
15 | |
16 | #include "vmx.h" | |
17 | #include <linux/kvm.h> | |
102d8325 | 18 | #include <linux/kvm_para.h> |
6aa8b732 AK |
19 | |
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 | |
e8207547 | 55 | #define KVM_ALIAS_SLOTS 4 |
6aa8b732 AK |
56 | #define KVM_MEMORY_SLOTS 4 |
57 | #define KVM_NUM_MMU_PAGES 256 | |
ebeace86 AK |
58 | #define KVM_MIN_FREE_MMU_PAGES 5 |
59 | #define KVM_REFILL_PAGES 25 | |
06465c5a | 60 | #define KVM_MAX_CPUID_ENTRIES 40 |
6aa8b732 AK |
61 | |
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 | |
7807fa6c | 67 | #define NM_VECTOR 7 |
6aa8b732 AK |
68 | #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 | ||
039576c0 AK |
80 | #define KVM_PIO_PAGE_OFFSET 1 |
81 | ||
6aa8b732 AK |
82 | /* |
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 | ||
93 | typedef unsigned long gva_t; | |
94 | typedef u64 gpa_t; | |
95 | typedef unsigned long gfn_t; | |
96 | ||
97 | typedef unsigned long hva_t; | |
98 | typedef u64 hpa_t; | |
99 | typedef unsigned long hfn_t; | |
100 | ||
cea0f0e7 AK |
101 | #define NR_PTE_CHAIN_ENTRIES 5 |
102 | ||
103 | struct 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) | |
d28c6cfb | 115 | * bits 17:18 - "access" - the user and writable bits of a huge page pde |
cea0f0e7 AK |
116 | */ |
117 | union 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; | |
d28c6cfb | 125 | unsigned hugepage_access : 2; |
cea0f0e7 AK |
126 | }; |
127 | }; | |
128 | ||
6aa8b732 AK |
129 | struct kvm_mmu_page { |
130 | struct list_head link; | |
cea0f0e7 AK |
131 | 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 | ||
6aa8b732 AK |
140 | hpa_t page_hpa; |
141 | unsigned long slot_bitmap; /* One bit set per slot which has memory | |
142 | * in this shadow page. | |
143 | */ | |
cea0f0e7 | 144 | int multimapped; /* More than one parent_pte? */ |
3bb65a22 | 145 | int root_count; /* Currently serving as active root */ |
cea0f0e7 AK |
146 | union { |
147 | u64 *parent_pte; /* !multimapped */ | |
148 | struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ | |
149 | }; | |
6aa8b732 AK |
150 | }; |
151 | ||
152 | struct vmcs { | |
153 | u32 revision_id; | |
154 | u32 abort; | |
155 | char data[0]; | |
156 | }; | |
157 | ||
158 | #define vmx_msr_entry kvm_msr_entry | |
159 | ||
160 | struct 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 | */ | |
167 | struct kvm_mmu { | |
168 | void (*new_cr3)(struct kvm_vcpu *vcpu); | |
169 | int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); | |
6aa8b732 AK |
170 | 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; | |
17ac10ad AK |
175 | |
176 | u64 *pae_root; | |
6aa8b732 AK |
177 | }; |
178 | ||
714b93da AK |
179 | #define KVM_NR_MEM_OBJS 20 |
180 | ||
181 | struct 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 | */ | |
6aa8b732 AK |
190 | struct kvm_guest_debug { |
191 | int enabled; | |
192 | unsigned long bp[4]; | |
193 | int singlestep; | |
194 | }; | |
195 | ||
196 | enum { | |
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, | |
05b3e0c2 | 205 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
206 | 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 | ||
218 | enum { | |
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 | ||
039576c0 AK |
229 | struct 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 | ||
1165f5fe AK |
241 | struct 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; | |
e6adf283 | 255 | u32 light_exits; |
1165f5fe AK |
256 | }; |
257 | ||
6aa8b732 AK |
258 | struct kvm_vcpu { |
259 | struct kvm *kvm; | |
260 | union { | |
261 | struct vmcs *vmcs; | |
262 | struct vcpu_svm *svm; | |
263 | }; | |
264 | struct mutex mutex; | |
265 | int cpu; | |
266 | int launched; | |
0cc5064d | 267 | u64 host_tsc; |
9a2bb7f4 | 268 | struct kvm_run *run; |
c1150d8c | 269 | int interrupt_window_open; |
6aa8b732 AK |
270 | unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */ |
271 | #define NR_IRQ_WORDS KVM_IRQ_BITMAP_SIZE(unsigned long) | |
272 | unsigned long irq_pending[NR_IRQ_WORDS]; | |
273 | unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */ | |
274 | unsigned long rip; /* needs vcpu_load_rsp_rip() */ | |
275 | ||
276 | unsigned long cr0; | |
277 | unsigned long cr2; | |
278 | unsigned long cr3; | |
102d8325 IM |
279 | gpa_t para_state_gpa; |
280 | struct page *para_state_page; | |
281 | gpa_t hypercall_gpa; | |
6aa8b732 AK |
282 | unsigned long cr4; |
283 | unsigned long cr8; | |
1342d353 | 284 | u64 pdptrs[4]; /* pae */ |
6aa8b732 AK |
285 | u64 shadow_efer; |
286 | u64 apic_base; | |
6f00e68f | 287 | u64 ia32_misc_enable_msr; |
6aa8b732 AK |
288 | int nmsrs; |
289 | struct vmx_msr_entry *guest_msrs; | |
290 | struct vmx_msr_entry *host_msrs; | |
291 | ||
292 | struct list_head free_pages; | |
293 | struct kvm_mmu_page page_header_buf[KVM_NUM_MMU_PAGES]; | |
294 | struct kvm_mmu mmu; | |
295 | ||
714b93da AK |
296 | struct kvm_mmu_memory_cache mmu_pte_chain_cache; |
297 | struct kvm_mmu_memory_cache mmu_rmap_desc_cache; | |
298 | ||
86a5ba02 AK |
299 | gfn_t last_pt_write_gfn; |
300 | int last_pt_write_count; | |
301 | ||
6aa8b732 AK |
302 | struct kvm_guest_debug guest_debug; |
303 | ||
304 | char fx_buf[FX_BUF_SIZE]; | |
305 | char *host_fx_image; | |
306 | char *guest_fx_image; | |
7807fa6c | 307 | int fpu_active; |
7702fd1f | 308 | int guest_fpu_loaded; |
6aa8b732 AK |
309 | |
310 | int mmio_needed; | |
311 | int mmio_read_completed; | |
312 | int mmio_is_write; | |
313 | int mmio_size; | |
314 | unsigned char mmio_data[8]; | |
315 | gpa_t mmio_phys_addr; | |
e7df56e4 | 316 | gva_t mmio_fault_cr2; |
039576c0 AK |
317 | struct kvm_pio_request pio; |
318 | void *pio_data; | |
6aa8b732 | 319 | |
1961d276 AK |
320 | int sigset_active; |
321 | sigset_t sigset; | |
322 | ||
1165f5fe AK |
323 | struct kvm_stat stat; |
324 | ||
6aa8b732 AK |
325 | struct { |
326 | int active; | |
327 | u8 save_iopl; | |
328 | struct kvm_save_segment { | |
329 | u16 selector; | |
330 | unsigned long base; | |
331 | u32 limit; | |
332 | u32 ar; | |
333 | } tr, es, ds, fs, gs; | |
334 | } rmode; | |
06465c5a AK |
335 | |
336 | int cpuid_nent; | |
337 | struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES]; | |
6aa8b732 AK |
338 | }; |
339 | ||
e8207547 AK |
340 | struct kvm_mem_alias { |
341 | gfn_t base_gfn; | |
342 | unsigned long npages; | |
343 | gfn_t target_gfn; | |
344 | }; | |
345 | ||
6aa8b732 AK |
346 | struct kvm_memory_slot { |
347 | gfn_t base_gfn; | |
348 | unsigned long npages; | |
349 | unsigned long flags; | |
350 | struct page **phys_mem; | |
351 | unsigned long *dirty_bitmap; | |
352 | }; | |
353 | ||
354 | struct kvm { | |
355 | spinlock_t lock; /* protects everything except vcpus */ | |
e8207547 AK |
356 | int naliases; |
357 | struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS]; | |
6aa8b732 AK |
358 | int nmemslots; |
359 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS]; | |
cea0f0e7 AK |
360 | /* |
361 | * Hash table of struct kvm_mmu_page. | |
362 | */ | |
6aa8b732 | 363 | struct list_head active_mmu_pages; |
ebeace86 | 364 | int n_free_mmu_pages; |
cea0f0e7 | 365 | struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; |
6aa8b732 AK |
366 | struct kvm_vcpu vcpus[KVM_MAX_VCPUS]; |
367 | int memory_config_version; | |
368 | int busy; | |
cd4a4e53 | 369 | unsigned long rmap_overflow; |
133de902 | 370 | struct list_head vm_list; |
bccf2150 | 371 | struct file *filp; |
6aa8b732 AK |
372 | }; |
373 | ||
6aa8b732 AK |
374 | struct descriptor_table { |
375 | u16 limit; | |
376 | unsigned long base; | |
377 | } __attribute__((packed)); | |
378 | ||
379 | struct kvm_arch_ops { | |
380 | int (*cpu_has_kvm_support)(void); /* __init */ | |
381 | int (*disabled_by_bios)(void); /* __init */ | |
382 | void (*hardware_enable)(void *dummy); /* __init */ | |
383 | void (*hardware_disable)(void *dummy); | |
384 | int (*hardware_setup)(void); /* __init */ | |
385 | void (*hardware_unsetup)(void); /* __exit */ | |
386 | ||
387 | int (*vcpu_create)(struct kvm_vcpu *vcpu); | |
388 | void (*vcpu_free)(struct kvm_vcpu *vcpu); | |
389 | ||
bccf2150 | 390 | void (*vcpu_load)(struct kvm_vcpu *vcpu); |
6aa8b732 | 391 | void (*vcpu_put)(struct kvm_vcpu *vcpu); |
774c47f1 | 392 | void (*vcpu_decache)(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
393 | |
394 | int (*set_guest_debug)(struct kvm_vcpu *vcpu, | |
395 | struct kvm_debug_guest *dbg); | |
396 | int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata); | |
397 | int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
398 | u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); | |
399 | void (*get_segment)(struct kvm_vcpu *vcpu, | |
400 | struct kvm_segment *var, int seg); | |
401 | void (*set_segment)(struct kvm_vcpu *vcpu, | |
402 | struct kvm_segment *var, int seg); | |
6aa8b732 | 403 | void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); |
25c4c276 | 404 | void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); |
6aa8b732 | 405 | void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); |
6aa8b732 AK |
406 | void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); |
407 | void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); | |
408 | void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); | |
409 | void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
410 | void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
411 | void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
412 | void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
413 | unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr); | |
414 | void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value, | |
415 | int *exception); | |
416 | void (*cache_regs)(struct kvm_vcpu *vcpu); | |
417 | void (*decache_regs)(struct kvm_vcpu *vcpu); | |
418 | unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); | |
419 | void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); | |
420 | ||
421 | void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr); | |
422 | void (*tlb_flush)(struct kvm_vcpu *vcpu); | |
423 | void (*inject_page_fault)(struct kvm_vcpu *vcpu, | |
424 | unsigned long addr, u32 err_code); | |
425 | ||
426 | void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code); | |
427 | ||
428 | int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run); | |
429 | int (*vcpu_setup)(struct kvm_vcpu *vcpu); | |
430 | void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); | |
102d8325 IM |
431 | void (*patch_hypercall)(struct kvm_vcpu *vcpu, |
432 | unsigned char *hypercall_addr); | |
6aa8b732 AK |
433 | }; |
434 | ||
6aa8b732 AK |
435 | extern struct kvm_arch_ops *kvm_arch_ops; |
436 | ||
437 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) | |
438 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
439 | ||
440 | int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module); | |
441 | void kvm_exit_arch(void); | |
442 | ||
b5a33a75 AK |
443 | int kvm_mmu_module_init(void); |
444 | void kvm_mmu_module_exit(void); | |
445 | ||
6aa8b732 | 446 | void kvm_mmu_destroy(struct kvm_vcpu *vcpu); |
8018c27b IM |
447 | int kvm_mmu_create(struct kvm_vcpu *vcpu); |
448 | int kvm_mmu_setup(struct kvm_vcpu *vcpu); | |
6aa8b732 AK |
449 | |
450 | int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); | |
714b93da | 451 | void kvm_mmu_slot_remove_write_access(struct kvm_vcpu *vcpu, int slot); |
e0fa826f | 452 | void kvm_mmu_zap_all(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
453 | |
454 | hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa); | |
455 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) | |
456 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
457 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
458 | hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva); | |
039576c0 | 459 | struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva); |
6aa8b732 AK |
460 | |
461 | void kvm_emulator_want_group7_invlpg(void); | |
462 | ||
463 | extern hpa_t bad_page_address; | |
464 | ||
954bbbc2 | 465 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
466 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
467 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); | |
468 | ||
469 | enum emulation_result { | |
470 | EMULATE_DONE, /* no further processing */ | |
471 | EMULATE_DO_MMIO, /* kvm_run filled with mmio request */ | |
472 | EMULATE_FAIL, /* can't emulate this instruction */ | |
473 | }; | |
474 | ||
475 | int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run, | |
476 | unsigned long cr2, u16 error_code); | |
477 | void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
478 | void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
479 | void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, | |
480 | unsigned long *rflags); | |
481 | ||
482 | unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); | |
483 | void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, | |
484 | unsigned long *rflags); | |
485 | ||
486 | struct x86_emulate_ctxt; | |
487 | ||
039576c0 AK |
488 | int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, |
489 | int size, unsigned long count, int string, int down, | |
490 | gva_t address, int rep, unsigned port); | |
06465c5a | 491 | void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
492 | int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address); |
493 | int emulate_clts(struct kvm_vcpu *vcpu); | |
494 | int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr, | |
495 | unsigned long *dest); | |
496 | int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, | |
497 | unsigned long value); | |
498 | ||
499 | void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); | |
500 | void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0); | |
501 | void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0); | |
502 | void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0); | |
503 | void lmsw(struct kvm_vcpu *vcpu, unsigned long msw); | |
504 | ||
3bab1f5d AK |
505 | int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); |
506 | int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); | |
6aa8b732 AK |
507 | |
508 | void fx_init(struct kvm_vcpu *vcpu); | |
509 | ||
510 | void load_msrs(struct vmx_msr_entry *e, int n); | |
511 | void save_msrs(struct vmx_msr_entry *e, int n); | |
512 | void kvm_resched(struct kvm_vcpu *vcpu); | |
7702fd1f AK |
513 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
514 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
6aa8b732 AK |
515 | |
516 | int kvm_read_guest(struct kvm_vcpu *vcpu, | |
517 | gva_t addr, | |
518 | unsigned long size, | |
519 | void *dest); | |
520 | ||
521 | int kvm_write_guest(struct kvm_vcpu *vcpu, | |
522 | gva_t addr, | |
523 | unsigned long size, | |
524 | void *data); | |
525 | ||
526 | unsigned long segment_base(u16 selector); | |
527 | ||
09072daf AK |
528 | void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, |
529 | const u8 *old, const u8 *new, int bytes); | |
a436036b | 530 | int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); |
ebeace86 AK |
531 | void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); |
532 | ||
270fd9b9 AK |
533 | int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run); |
534 | ||
ebeace86 AK |
535 | static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, |
536 | u32 error_code) | |
537 | { | |
538 | if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES)) | |
539 | kvm_mmu_free_some_pages(vcpu); | |
540 | return vcpu->mmu.page_fault(vcpu, gva, error_code); | |
541 | } | |
da4a00f0 | 542 | |
a9058ecd AK |
543 | static inline int is_long_mode(struct kvm_vcpu *vcpu) |
544 | { | |
545 | #ifdef CONFIG_X86_64 | |
546 | return vcpu->shadow_efer & EFER_LME; | |
547 | #else | |
548 | return 0; | |
549 | #endif | |
550 | } | |
551 | ||
6aa8b732 AK |
552 | static inline int is_pae(struct kvm_vcpu *vcpu) |
553 | { | |
554 | return vcpu->cr4 & CR4_PAE_MASK; | |
555 | } | |
556 | ||
557 | static inline int is_pse(struct kvm_vcpu *vcpu) | |
558 | { | |
559 | return vcpu->cr4 & CR4_PSE_MASK; | |
560 | } | |
561 | ||
562 | static inline int is_paging(struct kvm_vcpu *vcpu) | |
563 | { | |
564 | return vcpu->cr0 & CR0_PG_MASK; | |
565 | } | |
566 | ||
567 | static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot) | |
568 | { | |
569 | return slot - kvm->memslots; | |
570 | } | |
571 | ||
572 | static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) | |
573 | { | |
574 | struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); | |
575 | ||
5972e953 | 576 | return (struct kvm_mmu_page *)page_private(page); |
6aa8b732 AK |
577 | } |
578 | ||
579 | static inline u16 read_fs(void) | |
580 | { | |
581 | u16 seg; | |
582 | asm ("mov %%fs, %0" : "=g"(seg)); | |
583 | return seg; | |
584 | } | |
585 | ||
586 | static inline u16 read_gs(void) | |
587 | { | |
588 | u16 seg; | |
589 | asm ("mov %%gs, %0" : "=g"(seg)); | |
590 | return seg; | |
591 | } | |
592 | ||
593 | static inline u16 read_ldt(void) | |
594 | { | |
595 | u16 ldt; | |
596 | asm ("sldt %0" : "=g"(ldt)); | |
597 | return ldt; | |
598 | } | |
599 | ||
600 | static inline void load_fs(u16 sel) | |
601 | { | |
602 | asm ("mov %0, %%fs" : : "rm"(sel)); | |
603 | } | |
604 | ||
605 | static inline void load_gs(u16 sel) | |
606 | { | |
607 | asm ("mov %0, %%gs" : : "rm"(sel)); | |
608 | } | |
609 | ||
610 | #ifndef load_ldt | |
611 | static inline void load_ldt(u16 sel) | |
612 | { | |
a0610ddf | 613 | asm ("lldt %0" : : "rm"(sel)); |
6aa8b732 AK |
614 | } |
615 | #endif | |
616 | ||
617 | static inline void get_idt(struct descriptor_table *table) | |
618 | { | |
619 | asm ("sidt %0" : "=m"(*table)); | |
620 | } | |
621 | ||
622 | static inline void get_gdt(struct descriptor_table *table) | |
623 | { | |
624 | asm ("sgdt %0" : "=m"(*table)); | |
625 | } | |
626 | ||
627 | static inline unsigned long read_tr_base(void) | |
628 | { | |
629 | u16 tr; | |
630 | asm ("str %0" : "=g"(tr)); | |
631 | return segment_base(tr); | |
632 | } | |
633 | ||
05b3e0c2 | 634 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
635 | static inline unsigned long read_msr(unsigned long msr) |
636 | { | |
637 | u64 value; | |
638 | ||
639 | rdmsrl(msr, value); | |
640 | return value; | |
641 | } | |
642 | #endif | |
643 | ||
644 | static inline void fx_save(void *image) | |
645 | { | |
646 | asm ("fxsave (%0)":: "r" (image)); | |
647 | } | |
648 | ||
649 | static inline void fx_restore(void *image) | |
650 | { | |
651 | asm ("fxrstor (%0)":: "r" (image)); | |
652 | } | |
653 | ||
654 | static inline void fpu_init(void) | |
655 | { | |
656 | asm ("finit"); | |
657 | } | |
658 | ||
659 | static inline u32 get_rdx_init_val(void) | |
660 | { | |
661 | return 0x600; /* P6 family */ | |
662 | } | |
663 | ||
664 | #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30" | |
665 | #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2" | |
666 | #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3" | |
667 | #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30" | |
668 | #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0" | |
669 | #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0" | |
670 | #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4" | |
671 | #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4" | |
672 | #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30" | |
673 | ||
674 | #define MSR_IA32_TIME_STAMP_COUNTER 0x010 | |
675 | ||
676 | #define TSS_IOPB_BASE_OFFSET 0x66 | |
677 | #define TSS_BASE_SIZE 0x68 | |
678 | #define TSS_IOPB_SIZE (65536 / 8) | |
679 | #define TSS_REDIRECTION_SIZE (256 / 8) | |
680 | #define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) | |
681 | ||
6aa8b732 | 682 | #endif |