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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> | |
14 | ||
15 | #include "vmx.h" | |
16 | #include <linux/kvm.h> | |
102d8325 | 17 | #include <linux/kvm_para.h> |
6aa8b732 AK |
18 | |
19 | #define CR0_PE_MASK (1ULL << 0) | |
20 | #define CR0_TS_MASK (1ULL << 3) | |
21 | #define CR0_NE_MASK (1ULL << 5) | |
22 | #define CR0_WP_MASK (1ULL << 16) | |
23 | #define CR0_NW_MASK (1ULL << 29) | |
24 | #define CR0_CD_MASK (1ULL << 30) | |
25 | #define CR0_PG_MASK (1ULL << 31) | |
26 | ||
27 | #define CR3_WPT_MASK (1ULL << 3) | |
28 | #define CR3_PCD_MASK (1ULL << 4) | |
29 | ||
30 | #define CR3_RESEVED_BITS 0x07ULL | |
31 | #define CR3_L_MODE_RESEVED_BITS (~((1ULL << 40) - 1) | 0x0fe7ULL) | |
32 | #define CR3_FLAGS_MASK ((1ULL << 5) - 1) | |
33 | ||
34 | #define CR4_VME_MASK (1ULL << 0) | |
35 | #define CR4_PSE_MASK (1ULL << 4) | |
36 | #define CR4_PAE_MASK (1ULL << 5) | |
37 | #define CR4_PGE_MASK (1ULL << 7) | |
38 | #define CR4_VMXE_MASK (1ULL << 13) | |
39 | ||
40 | #define KVM_GUEST_CR0_MASK \ | |
41 | (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK \ | |
42 | | CR0_NW_MASK | CR0_CD_MASK) | |
43 | #define KVM_VM_CR0_ALWAYS_ON \ | |
44 | (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK) | |
45 | #define KVM_GUEST_CR4_MASK \ | |
46 | (CR4_PSE_MASK | CR4_PAE_MASK | CR4_PGE_MASK | CR4_VMXE_MASK | CR4_VME_MASK) | |
47 | #define KVM_PMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK) | |
48 | #define KVM_RMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK | CR4_VME_MASK) | |
49 | ||
50 | #define INVALID_PAGE (~(hpa_t)0) | |
51 | #define UNMAPPED_GVA (~(gpa_t)0) | |
52 | ||
53 | #define KVM_MAX_VCPUS 1 | |
54 | #define KVM_MEMORY_SLOTS 4 | |
55 | #define KVM_NUM_MMU_PAGES 256 | |
ebeace86 AK |
56 | #define KVM_MIN_FREE_MMU_PAGES 5 |
57 | #define KVM_REFILL_PAGES 25 | |
06465c5a | 58 | #define KVM_MAX_CPUID_ENTRIES 40 |
6aa8b732 AK |
59 | |
60 | #define FX_IMAGE_SIZE 512 | |
61 | #define FX_IMAGE_ALIGN 16 | |
62 | #define FX_BUF_SIZE (2 * FX_IMAGE_SIZE + FX_IMAGE_ALIGN) | |
63 | ||
64 | #define DE_VECTOR 0 | |
65 | #define DF_VECTOR 8 | |
66 | #define TS_VECTOR 10 | |
67 | #define NP_VECTOR 11 | |
68 | #define SS_VECTOR 12 | |
69 | #define GP_VECTOR 13 | |
70 | #define PF_VECTOR 14 | |
71 | ||
72 | #define SELECTOR_TI_MASK (1 << 2) | |
73 | #define SELECTOR_RPL_MASK 0x03 | |
74 | ||
75 | #define IOPL_SHIFT 12 | |
76 | ||
039576c0 AK |
77 | #define KVM_PIO_PAGE_OFFSET 1 |
78 | ||
6aa8b732 AK |
79 | /* |
80 | * Address types: | |
81 | * | |
82 | * gva - guest virtual address | |
83 | * gpa - guest physical address | |
84 | * gfn - guest frame number | |
85 | * hva - host virtual address | |
86 | * hpa - host physical address | |
87 | * hfn - host frame number | |
88 | */ | |
89 | ||
90 | typedef unsigned long gva_t; | |
91 | typedef u64 gpa_t; | |
92 | typedef unsigned long gfn_t; | |
93 | ||
94 | typedef unsigned long hva_t; | |
95 | typedef u64 hpa_t; | |
96 | typedef unsigned long hfn_t; | |
97 | ||
cea0f0e7 AK |
98 | #define NR_PTE_CHAIN_ENTRIES 5 |
99 | ||
100 | struct kvm_pte_chain { | |
101 | u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES]; | |
102 | struct hlist_node link; | |
103 | }; | |
104 | ||
105 | /* | |
106 | * kvm_mmu_page_role, below, is defined as: | |
107 | * | |
108 | * bits 0:3 - total guest paging levels (2-4, or zero for real mode) | |
109 | * bits 4:7 - page table level for this shadow (1-4) | |
110 | * bits 8:9 - page table quadrant for 2-level guests | |
111 | * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode) | |
d28c6cfb | 112 | * bits 17:18 - "access" - the user and writable bits of a huge page pde |
cea0f0e7 AK |
113 | */ |
114 | union kvm_mmu_page_role { | |
115 | unsigned word; | |
116 | struct { | |
117 | unsigned glevels : 4; | |
118 | unsigned level : 4; | |
119 | unsigned quadrant : 2; | |
120 | unsigned pad_for_nice_hex_output : 6; | |
121 | unsigned metaphysical : 1; | |
d28c6cfb | 122 | unsigned hugepage_access : 2; |
cea0f0e7 AK |
123 | }; |
124 | }; | |
125 | ||
6aa8b732 AK |
126 | struct kvm_mmu_page { |
127 | struct list_head link; | |
cea0f0e7 AK |
128 | struct hlist_node hash_link; |
129 | ||
130 | /* | |
131 | * The following two entries are used to key the shadow page in the | |
132 | * hash table. | |
133 | */ | |
134 | gfn_t gfn; | |
135 | union kvm_mmu_page_role role; | |
136 | ||
6aa8b732 AK |
137 | hpa_t page_hpa; |
138 | unsigned long slot_bitmap; /* One bit set per slot which has memory | |
139 | * in this shadow page. | |
140 | */ | |
cea0f0e7 | 141 | int multimapped; /* More than one parent_pte? */ |
3bb65a22 | 142 | int root_count; /* Currently serving as active root */ |
cea0f0e7 AK |
143 | union { |
144 | u64 *parent_pte; /* !multimapped */ | |
145 | struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ | |
146 | }; | |
6aa8b732 AK |
147 | }; |
148 | ||
149 | struct vmcs { | |
150 | u32 revision_id; | |
151 | u32 abort; | |
152 | char data[0]; | |
153 | }; | |
154 | ||
155 | #define vmx_msr_entry kvm_msr_entry | |
156 | ||
157 | struct kvm_vcpu; | |
158 | ||
159 | /* | |
160 | * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level | |
161 | * 32-bit). The kvm_mmu structure abstracts the details of the current mmu | |
162 | * mode. | |
163 | */ | |
164 | struct kvm_mmu { | |
165 | void (*new_cr3)(struct kvm_vcpu *vcpu); | |
166 | int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); | |
6aa8b732 AK |
167 | void (*free)(struct kvm_vcpu *vcpu); |
168 | gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva); | |
169 | hpa_t root_hpa; | |
170 | int root_level; | |
171 | int shadow_root_level; | |
17ac10ad AK |
172 | |
173 | u64 *pae_root; | |
6aa8b732 AK |
174 | }; |
175 | ||
714b93da AK |
176 | #define KVM_NR_MEM_OBJS 20 |
177 | ||
178 | struct kvm_mmu_memory_cache { | |
179 | int nobjs; | |
180 | void *objects[KVM_NR_MEM_OBJS]; | |
181 | }; | |
182 | ||
183 | /* | |
184 | * We don't want allocation failures within the mmu code, so we preallocate | |
185 | * enough memory for a single page fault in a cache. | |
186 | */ | |
6aa8b732 AK |
187 | struct kvm_guest_debug { |
188 | int enabled; | |
189 | unsigned long bp[4]; | |
190 | int singlestep; | |
191 | }; | |
192 | ||
193 | enum { | |
194 | VCPU_REGS_RAX = 0, | |
195 | VCPU_REGS_RCX = 1, | |
196 | VCPU_REGS_RDX = 2, | |
197 | VCPU_REGS_RBX = 3, | |
198 | VCPU_REGS_RSP = 4, | |
199 | VCPU_REGS_RBP = 5, | |
200 | VCPU_REGS_RSI = 6, | |
201 | VCPU_REGS_RDI = 7, | |
05b3e0c2 | 202 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
203 | VCPU_REGS_R8 = 8, |
204 | VCPU_REGS_R9 = 9, | |
205 | VCPU_REGS_R10 = 10, | |
206 | VCPU_REGS_R11 = 11, | |
207 | VCPU_REGS_R12 = 12, | |
208 | VCPU_REGS_R13 = 13, | |
209 | VCPU_REGS_R14 = 14, | |
210 | VCPU_REGS_R15 = 15, | |
211 | #endif | |
212 | NR_VCPU_REGS | |
213 | }; | |
214 | ||
215 | enum { | |
216 | VCPU_SREG_CS, | |
217 | VCPU_SREG_DS, | |
218 | VCPU_SREG_ES, | |
219 | VCPU_SREG_FS, | |
220 | VCPU_SREG_GS, | |
221 | VCPU_SREG_SS, | |
222 | VCPU_SREG_TR, | |
223 | VCPU_SREG_LDTR, | |
224 | }; | |
225 | ||
039576c0 AK |
226 | struct kvm_pio_request { |
227 | unsigned long count; | |
228 | int cur_count; | |
229 | struct page *guest_pages[2]; | |
230 | unsigned guest_page_offset; | |
231 | int in; | |
232 | int size; | |
233 | int string; | |
234 | int down; | |
235 | int rep; | |
236 | }; | |
237 | ||
6aa8b732 AK |
238 | struct kvm_vcpu { |
239 | struct kvm *kvm; | |
240 | union { | |
241 | struct vmcs *vmcs; | |
242 | struct vcpu_svm *svm; | |
243 | }; | |
244 | struct mutex mutex; | |
245 | int cpu; | |
246 | int launched; | |
0cc5064d | 247 | u64 host_tsc; |
9a2bb7f4 | 248 | struct kvm_run *run; |
c1150d8c | 249 | int interrupt_window_open; |
6aa8b732 AK |
250 | unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */ |
251 | #define NR_IRQ_WORDS KVM_IRQ_BITMAP_SIZE(unsigned long) | |
252 | unsigned long irq_pending[NR_IRQ_WORDS]; | |
253 | unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */ | |
254 | unsigned long rip; /* needs vcpu_load_rsp_rip() */ | |
255 | ||
256 | unsigned long cr0; | |
257 | unsigned long cr2; | |
258 | unsigned long cr3; | |
102d8325 IM |
259 | gpa_t para_state_gpa; |
260 | struct page *para_state_page; | |
261 | gpa_t hypercall_gpa; | |
6aa8b732 AK |
262 | unsigned long cr4; |
263 | unsigned long cr8; | |
1342d353 | 264 | u64 pdptrs[4]; /* pae */ |
6aa8b732 AK |
265 | u64 shadow_efer; |
266 | u64 apic_base; | |
6f00e68f | 267 | u64 ia32_misc_enable_msr; |
6aa8b732 AK |
268 | int nmsrs; |
269 | struct vmx_msr_entry *guest_msrs; | |
270 | struct vmx_msr_entry *host_msrs; | |
271 | ||
272 | struct list_head free_pages; | |
273 | struct kvm_mmu_page page_header_buf[KVM_NUM_MMU_PAGES]; | |
274 | struct kvm_mmu mmu; | |
275 | ||
714b93da AK |
276 | struct kvm_mmu_memory_cache mmu_pte_chain_cache; |
277 | struct kvm_mmu_memory_cache mmu_rmap_desc_cache; | |
278 | ||
86a5ba02 AK |
279 | gfn_t last_pt_write_gfn; |
280 | int last_pt_write_count; | |
281 | ||
6aa8b732 AK |
282 | struct kvm_guest_debug guest_debug; |
283 | ||
284 | char fx_buf[FX_BUF_SIZE]; | |
285 | char *host_fx_image; | |
286 | char *guest_fx_image; | |
287 | ||
288 | int mmio_needed; | |
289 | int mmio_read_completed; | |
290 | int mmio_is_write; | |
291 | int mmio_size; | |
292 | unsigned char mmio_data[8]; | |
293 | gpa_t mmio_phys_addr; | |
039576c0 AK |
294 | struct kvm_pio_request pio; |
295 | void *pio_data; | |
6aa8b732 | 296 | |
1961d276 AK |
297 | int sigset_active; |
298 | sigset_t sigset; | |
299 | ||
6aa8b732 AK |
300 | struct { |
301 | int active; | |
302 | u8 save_iopl; | |
303 | struct kvm_save_segment { | |
304 | u16 selector; | |
305 | unsigned long base; | |
306 | u32 limit; | |
307 | u32 ar; | |
308 | } tr, es, ds, fs, gs; | |
309 | } rmode; | |
06465c5a AK |
310 | |
311 | int cpuid_nent; | |
312 | struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES]; | |
6aa8b732 AK |
313 | }; |
314 | ||
315 | struct kvm_memory_slot { | |
316 | gfn_t base_gfn; | |
317 | unsigned long npages; | |
318 | unsigned long flags; | |
319 | struct page **phys_mem; | |
320 | unsigned long *dirty_bitmap; | |
321 | }; | |
322 | ||
323 | struct kvm { | |
324 | spinlock_t lock; /* protects everything except vcpus */ | |
325 | int nmemslots; | |
326 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS]; | |
cea0f0e7 AK |
327 | /* |
328 | * Hash table of struct kvm_mmu_page. | |
329 | */ | |
6aa8b732 | 330 | struct list_head active_mmu_pages; |
ebeace86 | 331 | int n_free_mmu_pages; |
cea0f0e7 | 332 | struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; |
6aa8b732 AK |
333 | struct kvm_vcpu vcpus[KVM_MAX_VCPUS]; |
334 | int memory_config_version; | |
335 | int busy; | |
cd4a4e53 | 336 | unsigned long rmap_overflow; |
133de902 | 337 | struct list_head vm_list; |
bccf2150 | 338 | struct file *filp; |
6aa8b732 AK |
339 | }; |
340 | ||
341 | struct kvm_stat { | |
342 | u32 pf_fixed; | |
343 | u32 pf_guest; | |
344 | u32 tlb_flush; | |
345 | u32 invlpg; | |
346 | ||
347 | u32 exits; | |
348 | u32 io_exits; | |
349 | u32 mmio_exits; | |
350 | u32 signal_exits; | |
c1150d8c DL |
351 | u32 irq_window_exits; |
352 | u32 halt_exits; | |
353 | u32 request_irq_exits; | |
6aa8b732 AK |
354 | u32 irq_exits; |
355 | }; | |
356 | ||
357 | struct descriptor_table { | |
358 | u16 limit; | |
359 | unsigned long base; | |
360 | } __attribute__((packed)); | |
361 | ||
362 | struct kvm_arch_ops { | |
363 | int (*cpu_has_kvm_support)(void); /* __init */ | |
364 | int (*disabled_by_bios)(void); /* __init */ | |
365 | void (*hardware_enable)(void *dummy); /* __init */ | |
366 | void (*hardware_disable)(void *dummy); | |
367 | int (*hardware_setup)(void); /* __init */ | |
368 | void (*hardware_unsetup)(void); /* __exit */ | |
369 | ||
370 | int (*vcpu_create)(struct kvm_vcpu *vcpu); | |
371 | void (*vcpu_free)(struct kvm_vcpu *vcpu); | |
372 | ||
bccf2150 | 373 | void (*vcpu_load)(struct kvm_vcpu *vcpu); |
6aa8b732 | 374 | void (*vcpu_put)(struct kvm_vcpu *vcpu); |
774c47f1 | 375 | void (*vcpu_decache)(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
376 | |
377 | int (*set_guest_debug)(struct kvm_vcpu *vcpu, | |
378 | struct kvm_debug_guest *dbg); | |
379 | int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata); | |
380 | int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
381 | u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); | |
382 | void (*get_segment)(struct kvm_vcpu *vcpu, | |
383 | struct kvm_segment *var, int seg); | |
384 | void (*set_segment)(struct kvm_vcpu *vcpu, | |
385 | struct kvm_segment *var, int seg); | |
6aa8b732 | 386 | void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); |
399badf3 | 387 | void (*decache_cr0_cr4_guest_bits)(struct kvm_vcpu *vcpu); |
6aa8b732 | 388 | void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); |
6aa8b732 AK |
389 | void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); |
390 | void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); | |
391 | void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); | |
392 | void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
393 | void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
394 | void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
395 | void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
396 | unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr); | |
397 | void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value, | |
398 | int *exception); | |
399 | void (*cache_regs)(struct kvm_vcpu *vcpu); | |
400 | void (*decache_regs)(struct kvm_vcpu *vcpu); | |
401 | unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); | |
402 | void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); | |
403 | ||
404 | void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr); | |
405 | void (*tlb_flush)(struct kvm_vcpu *vcpu); | |
406 | void (*inject_page_fault)(struct kvm_vcpu *vcpu, | |
407 | unsigned long addr, u32 err_code); | |
408 | ||
409 | void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code); | |
410 | ||
411 | int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run); | |
412 | int (*vcpu_setup)(struct kvm_vcpu *vcpu); | |
413 | void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); | |
102d8325 IM |
414 | void (*patch_hypercall)(struct kvm_vcpu *vcpu, |
415 | unsigned char *hypercall_addr); | |
6aa8b732 AK |
416 | }; |
417 | ||
418 | extern struct kvm_stat kvm_stat; | |
419 | extern struct kvm_arch_ops *kvm_arch_ops; | |
420 | ||
421 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) | |
422 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
423 | ||
424 | int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module); | |
425 | void kvm_exit_arch(void); | |
426 | ||
427 | void kvm_mmu_destroy(struct kvm_vcpu *vcpu); | |
8018c27b IM |
428 | int kvm_mmu_create(struct kvm_vcpu *vcpu); |
429 | int kvm_mmu_setup(struct kvm_vcpu *vcpu); | |
6aa8b732 AK |
430 | |
431 | int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); | |
714b93da | 432 | void kvm_mmu_slot_remove_write_access(struct kvm_vcpu *vcpu, int slot); |
e0fa826f | 433 | void kvm_mmu_zap_all(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
434 | |
435 | hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa); | |
436 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) | |
437 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
438 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
439 | hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva); | |
039576c0 | 440 | struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva); |
6aa8b732 AK |
441 | |
442 | void kvm_emulator_want_group7_invlpg(void); | |
443 | ||
444 | extern hpa_t bad_page_address; | |
445 | ||
446 | static inline struct page *gfn_to_page(struct kvm_memory_slot *slot, gfn_t gfn) | |
447 | { | |
448 | return slot->phys_mem[gfn - slot->base_gfn]; | |
449 | } | |
450 | ||
451 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); | |
452 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); | |
453 | ||
454 | enum emulation_result { | |
455 | EMULATE_DONE, /* no further processing */ | |
456 | EMULATE_DO_MMIO, /* kvm_run filled with mmio request */ | |
457 | EMULATE_FAIL, /* can't emulate this instruction */ | |
458 | }; | |
459 | ||
460 | int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run, | |
461 | unsigned long cr2, u16 error_code); | |
462 | void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
463 | void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
464 | void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, | |
465 | unsigned long *rflags); | |
466 | ||
467 | unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); | |
468 | void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, | |
469 | unsigned long *rflags); | |
470 | ||
471 | struct x86_emulate_ctxt; | |
472 | ||
039576c0 AK |
473 | int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, |
474 | int size, unsigned long count, int string, int down, | |
475 | gva_t address, int rep, unsigned port); | |
06465c5a | 476 | void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
477 | int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address); |
478 | int emulate_clts(struct kvm_vcpu *vcpu); | |
479 | int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr, | |
480 | unsigned long *dest); | |
481 | int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, | |
482 | unsigned long value); | |
483 | ||
484 | void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); | |
485 | void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0); | |
486 | void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0); | |
487 | void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0); | |
488 | void lmsw(struct kvm_vcpu *vcpu, unsigned long msw); | |
489 | ||
3bab1f5d AK |
490 | int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); |
491 | int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); | |
6aa8b732 AK |
492 | |
493 | void fx_init(struct kvm_vcpu *vcpu); | |
494 | ||
495 | void load_msrs(struct vmx_msr_entry *e, int n); | |
496 | void save_msrs(struct vmx_msr_entry *e, int n); | |
497 | void kvm_resched(struct kvm_vcpu *vcpu); | |
498 | ||
499 | int kvm_read_guest(struct kvm_vcpu *vcpu, | |
500 | gva_t addr, | |
501 | unsigned long size, | |
502 | void *dest); | |
503 | ||
504 | int kvm_write_guest(struct kvm_vcpu *vcpu, | |
505 | gva_t addr, | |
506 | unsigned long size, | |
507 | void *data); | |
508 | ||
509 | unsigned long segment_base(u16 selector); | |
510 | ||
da4a00f0 AK |
511 | void kvm_mmu_pre_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes); |
512 | void kvm_mmu_post_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes); | |
a436036b | 513 | int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); |
ebeace86 AK |
514 | void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); |
515 | ||
270fd9b9 AK |
516 | int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run); |
517 | ||
ebeace86 AK |
518 | static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, |
519 | u32 error_code) | |
520 | { | |
521 | if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES)) | |
522 | kvm_mmu_free_some_pages(vcpu); | |
523 | return vcpu->mmu.page_fault(vcpu, gva, error_code); | |
524 | } | |
da4a00f0 | 525 | |
6aa8b732 AK |
526 | static inline struct page *_gfn_to_page(struct kvm *kvm, gfn_t gfn) |
527 | { | |
528 | struct kvm_memory_slot *slot = gfn_to_memslot(kvm, gfn); | |
529 | return (slot) ? slot->phys_mem[gfn - slot->base_gfn] : NULL; | |
530 | } | |
531 | ||
a9058ecd AK |
532 | static inline int is_long_mode(struct kvm_vcpu *vcpu) |
533 | { | |
534 | #ifdef CONFIG_X86_64 | |
535 | return vcpu->shadow_efer & EFER_LME; | |
536 | #else | |
537 | return 0; | |
538 | #endif | |
539 | } | |
540 | ||
6aa8b732 AK |
541 | static inline int is_pae(struct kvm_vcpu *vcpu) |
542 | { | |
543 | return vcpu->cr4 & CR4_PAE_MASK; | |
544 | } | |
545 | ||
546 | static inline int is_pse(struct kvm_vcpu *vcpu) | |
547 | { | |
548 | return vcpu->cr4 & CR4_PSE_MASK; | |
549 | } | |
550 | ||
551 | static inline int is_paging(struct kvm_vcpu *vcpu) | |
552 | { | |
553 | return vcpu->cr0 & CR0_PG_MASK; | |
554 | } | |
555 | ||
556 | static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot) | |
557 | { | |
558 | return slot - kvm->memslots; | |
559 | } | |
560 | ||
561 | static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) | |
562 | { | |
563 | struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); | |
564 | ||
5972e953 | 565 | return (struct kvm_mmu_page *)page_private(page); |
6aa8b732 AK |
566 | } |
567 | ||
568 | static inline u16 read_fs(void) | |
569 | { | |
570 | u16 seg; | |
571 | asm ("mov %%fs, %0" : "=g"(seg)); | |
572 | return seg; | |
573 | } | |
574 | ||
575 | static inline u16 read_gs(void) | |
576 | { | |
577 | u16 seg; | |
578 | asm ("mov %%gs, %0" : "=g"(seg)); | |
579 | return seg; | |
580 | } | |
581 | ||
582 | static inline u16 read_ldt(void) | |
583 | { | |
584 | u16 ldt; | |
585 | asm ("sldt %0" : "=g"(ldt)); | |
586 | return ldt; | |
587 | } | |
588 | ||
589 | static inline void load_fs(u16 sel) | |
590 | { | |
591 | asm ("mov %0, %%fs" : : "rm"(sel)); | |
592 | } | |
593 | ||
594 | static inline void load_gs(u16 sel) | |
595 | { | |
596 | asm ("mov %0, %%gs" : : "rm"(sel)); | |
597 | } | |
598 | ||
599 | #ifndef load_ldt | |
600 | static inline void load_ldt(u16 sel) | |
601 | { | |
a0610ddf | 602 | asm ("lldt %0" : : "rm"(sel)); |
6aa8b732 AK |
603 | } |
604 | #endif | |
605 | ||
606 | static inline void get_idt(struct descriptor_table *table) | |
607 | { | |
608 | asm ("sidt %0" : "=m"(*table)); | |
609 | } | |
610 | ||
611 | static inline void get_gdt(struct descriptor_table *table) | |
612 | { | |
613 | asm ("sgdt %0" : "=m"(*table)); | |
614 | } | |
615 | ||
616 | static inline unsigned long read_tr_base(void) | |
617 | { | |
618 | u16 tr; | |
619 | asm ("str %0" : "=g"(tr)); | |
620 | return segment_base(tr); | |
621 | } | |
622 | ||
05b3e0c2 | 623 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
624 | static inline unsigned long read_msr(unsigned long msr) |
625 | { | |
626 | u64 value; | |
627 | ||
628 | rdmsrl(msr, value); | |
629 | return value; | |
630 | } | |
631 | #endif | |
632 | ||
633 | static inline void fx_save(void *image) | |
634 | { | |
635 | asm ("fxsave (%0)":: "r" (image)); | |
636 | } | |
637 | ||
638 | static inline void fx_restore(void *image) | |
639 | { | |
640 | asm ("fxrstor (%0)":: "r" (image)); | |
641 | } | |
642 | ||
643 | static inline void fpu_init(void) | |
644 | { | |
645 | asm ("finit"); | |
646 | } | |
647 | ||
648 | static inline u32 get_rdx_init_val(void) | |
649 | { | |
650 | return 0x600; /* P6 family */ | |
651 | } | |
652 | ||
653 | #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30" | |
654 | #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2" | |
655 | #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3" | |
656 | #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30" | |
657 | #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0" | |
658 | #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0" | |
659 | #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4" | |
660 | #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4" | |
661 | #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30" | |
662 | ||
663 | #define MSR_IA32_TIME_STAMP_COUNTER 0x010 | |
664 | ||
665 | #define TSS_IOPB_BASE_OFFSET 0x66 | |
666 | #define TSS_BASE_SIZE 0x68 | |
667 | #define TSS_IOPB_SIZE (65536 / 8) | |
668 | #define TSS_REDIRECTION_SIZE (256 / 8) | |
669 | #define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) | |
670 | ||
6aa8b732 | 671 | #endif |