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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> | |
e56a7a28 | 10 | #include <linux/hardirq.h> |
6aa8b732 AK |
11 | #include <linux/list.h> |
12 | #include <linux/mutex.h> | |
13 | #include <linux/spinlock.h> | |
06ff0d37 MR |
14 | #include <linux/signal.h> |
15 | #include <linux/sched.h> | |
6aa8b732 | 16 | #include <linux/mm.h> |
15ad7146 | 17 | #include <linux/preempt.h> |
e8edc6e0 | 18 | #include <asm/signal.h> |
6aa8b732 | 19 | |
6aa8b732 | 20 | #include <linux/kvm.h> |
102d8325 | 21 | #include <linux/kvm_para.h> |
6aa8b732 | 22 | |
f802a307 RR |
23 | #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1) |
24 | #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD)) | |
25 | #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS|0xFFFFFF0000000000ULL) | |
6aa8b732 | 26 | |
6aa8b732 | 27 | #define KVM_GUEST_CR0_MASK \ |
707d92fa RR |
28 | (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \ |
29 | | X86_CR0_NW | X86_CR0_CD) | |
6aa8b732 | 30 | #define KVM_VM_CR0_ALWAYS_ON \ |
707d92fa RR |
31 | (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \ |
32 | | X86_CR0_MP) | |
6aa8b732 | 33 | #define KVM_GUEST_CR4_MASK \ |
66aee91a RR |
34 | (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE) |
35 | #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE) | |
36 | #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE) | |
6aa8b732 AK |
37 | |
38 | #define INVALID_PAGE (~(hpa_t)0) | |
39 | #define UNMAPPED_GVA (~(gpa_t)0) | |
40 | ||
ef9254df | 41 | #define KVM_MAX_VCPUS 4 |
e8207547 | 42 | #define KVM_ALIAS_SLOTS 4 |
2e2c618d | 43 | #define KVM_MEMORY_SLOTS 8 |
e0d62c7f IE |
44 | /* memory slots that does not exposed to userspace */ |
45 | #define KVM_PRIVATE_MEM_SLOTS 4 | |
82ce2c96 IE |
46 | #define KVM_PERMILLE_MMU_PAGES 20 |
47 | #define KVM_MIN_ALLOC_MMU_PAGES 64 | |
7494c0cc | 48 | #define KVM_NUM_MMU_PAGES 1024 |
ebeace86 AK |
49 | #define KVM_MIN_FREE_MMU_PAGES 5 |
50 | #define KVM_REFILL_PAGES 25 | |
06465c5a | 51 | #define KVM_MAX_CPUID_ENTRIES 40 |
6aa8b732 | 52 | |
6aa8b732 | 53 | #define DE_VECTOR 0 |
7aa81cc0 | 54 | #define UD_VECTOR 6 |
7807fa6c | 55 | #define NM_VECTOR 7 |
6aa8b732 AK |
56 | #define DF_VECTOR 8 |
57 | #define TS_VECTOR 10 | |
58 | #define NP_VECTOR 11 | |
59 | #define SS_VECTOR 12 | |
60 | #define GP_VECTOR 13 | |
61 | #define PF_VECTOR 14 | |
62 | ||
63 | #define SELECTOR_TI_MASK (1 << 2) | |
64 | #define SELECTOR_RPL_MASK 0x03 | |
65 | ||
66 | #define IOPL_SHIFT 12 | |
67 | ||
039576c0 AK |
68 | #define KVM_PIO_PAGE_OFFSET 1 |
69 | ||
d9e368d6 AK |
70 | /* |
71 | * vcpu->requests bit members | |
72 | */ | |
3176bc3e | 73 | #define KVM_REQ_TLB_FLUSH 0 |
d9e368d6 | 74 | |
6aa8b732 AK |
75 | /* |
76 | * Address types: | |
77 | * | |
78 | * gva - guest virtual address | |
79 | * gpa - guest physical address | |
80 | * gfn - guest frame number | |
81 | * hva - host virtual address | |
82 | * hpa - host physical address | |
83 | * hfn - host frame number | |
84 | */ | |
85 | ||
86 | typedef unsigned long gva_t; | |
87 | typedef u64 gpa_t; | |
88 | typedef unsigned long gfn_t; | |
89 | ||
90 | typedef unsigned long hva_t; | |
91 | typedef u64 hpa_t; | |
92 | typedef unsigned long hfn_t; | |
93 | ||
cea0f0e7 AK |
94 | #define NR_PTE_CHAIN_ENTRIES 5 |
95 | ||
96 | struct kvm_pte_chain { | |
97 | u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES]; | |
98 | struct hlist_node link; | |
99 | }; | |
100 | ||
101 | /* | |
102 | * kvm_mmu_page_role, below, is defined as: | |
103 | * | |
104 | * bits 0:3 - total guest paging levels (2-4, or zero for real mode) | |
105 | * bits 4:7 - page table level for this shadow (1-4) | |
106 | * bits 8:9 - page table quadrant for 2-level guests | |
107 | * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode) | |
d55e2cb2 | 108 | * bits 17:19 - "access" - the user, writable, and nx bits of a huge page pde |
cea0f0e7 AK |
109 | */ |
110 | union kvm_mmu_page_role { | |
111 | unsigned word; | |
112 | struct { | |
113 | unsigned glevels : 4; | |
114 | unsigned level : 4; | |
115 | unsigned quadrant : 2; | |
116 | unsigned pad_for_nice_hex_output : 6; | |
117 | unsigned metaphysical : 1; | |
d55e2cb2 | 118 | unsigned hugepage_access : 3; |
cea0f0e7 AK |
119 | }; |
120 | }; | |
121 | ||
6aa8b732 AK |
122 | struct kvm_mmu_page { |
123 | struct list_head link; | |
cea0f0e7 AK |
124 | struct hlist_node hash_link; |
125 | ||
126 | /* | |
127 | * The following two entries are used to key the shadow page in the | |
128 | * hash table. | |
129 | */ | |
130 | gfn_t gfn; | |
131 | union kvm_mmu_page_role role; | |
132 | ||
47ad8e68 | 133 | u64 *spt; |
290fc38d IE |
134 | /* hold the gfn of each spte inside spt */ |
135 | gfn_t *gfns; | |
6aa8b732 AK |
136 | unsigned long slot_bitmap; /* One bit set per slot which has memory |
137 | * in this shadow page. | |
138 | */ | |
cea0f0e7 | 139 | int multimapped; /* More than one parent_pte? */ |
3bb65a22 | 140 | int root_count; /* Currently serving as active root */ |
cea0f0e7 AK |
141 | union { |
142 | u64 *parent_pte; /* !multimapped */ | |
143 | struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ | |
144 | }; | |
6aa8b732 AK |
145 | }; |
146 | ||
6aa8b732 | 147 | struct kvm_vcpu; |
c16f862d | 148 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 AK |
149 | |
150 | /* | |
151 | * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level | |
152 | * 32-bit). The kvm_mmu structure abstracts the details of the current mmu | |
153 | * mode. | |
154 | */ | |
155 | struct kvm_mmu { | |
156 | void (*new_cr3)(struct kvm_vcpu *vcpu); | |
157 | int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); | |
6aa8b732 AK |
158 | void (*free)(struct kvm_vcpu *vcpu); |
159 | gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva); | |
c7addb90 AK |
160 | void (*prefetch_page)(struct kvm_vcpu *vcpu, |
161 | struct kvm_mmu_page *page); | |
6aa8b732 AK |
162 | hpa_t root_hpa; |
163 | int root_level; | |
164 | int shadow_root_level; | |
17ac10ad AK |
165 | |
166 | u64 *pae_root; | |
6aa8b732 AK |
167 | }; |
168 | ||
290fc38d | 169 | #define KVM_NR_MEM_OBJS 40 |
714b93da AK |
170 | |
171 | struct kvm_mmu_memory_cache { | |
172 | int nobjs; | |
173 | void *objects[KVM_NR_MEM_OBJS]; | |
174 | }; | |
175 | ||
176 | /* | |
177 | * We don't want allocation failures within the mmu code, so we preallocate | |
178 | * enough memory for a single page fault in a cache. | |
179 | */ | |
6aa8b732 AK |
180 | struct kvm_guest_debug { |
181 | int enabled; | |
182 | unsigned long bp[4]; | |
183 | int singlestep; | |
184 | }; | |
185 | ||
186 | enum { | |
187 | VCPU_REGS_RAX = 0, | |
188 | VCPU_REGS_RCX = 1, | |
189 | VCPU_REGS_RDX = 2, | |
190 | VCPU_REGS_RBX = 3, | |
191 | VCPU_REGS_RSP = 4, | |
192 | VCPU_REGS_RBP = 5, | |
193 | VCPU_REGS_RSI = 6, | |
194 | VCPU_REGS_RDI = 7, | |
05b3e0c2 | 195 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
196 | VCPU_REGS_R8 = 8, |
197 | VCPU_REGS_R9 = 9, | |
198 | VCPU_REGS_R10 = 10, | |
199 | VCPU_REGS_R11 = 11, | |
200 | VCPU_REGS_R12 = 12, | |
201 | VCPU_REGS_R13 = 13, | |
202 | VCPU_REGS_R14 = 14, | |
203 | VCPU_REGS_R15 = 15, | |
204 | #endif | |
205 | NR_VCPU_REGS | |
206 | }; | |
207 | ||
208 | enum { | |
209 | VCPU_SREG_CS, | |
210 | VCPU_SREG_DS, | |
211 | VCPU_SREG_ES, | |
212 | VCPU_SREG_FS, | |
213 | VCPU_SREG_GS, | |
214 | VCPU_SREG_SS, | |
215 | VCPU_SREG_TR, | |
216 | VCPU_SREG_LDTR, | |
217 | }; | |
218 | ||
3427318f LV |
219 | #include "x86_emulate.h" |
220 | ||
039576c0 AK |
221 | struct kvm_pio_request { |
222 | unsigned long count; | |
223 | int cur_count; | |
224 | struct page *guest_pages[2]; | |
225 | unsigned guest_page_offset; | |
226 | int in; | |
74906345 | 227 | int port; |
039576c0 AK |
228 | int size; |
229 | int string; | |
230 | int down; | |
231 | int rep; | |
232 | }; | |
233 | ||
ba1389b7 | 234 | struct kvm_vcpu_stat { |
1165f5fe AK |
235 | u32 pf_fixed; |
236 | u32 pf_guest; | |
237 | u32 tlb_flush; | |
238 | u32 invlpg; | |
239 | ||
240 | u32 exits; | |
241 | u32 io_exits; | |
242 | u32 mmio_exits; | |
243 | u32 signal_exits; | |
244 | u32 irq_window_exits; | |
245 | u32 halt_exits; | |
b6958ce4 | 246 | u32 halt_wakeup; |
1165f5fe AK |
247 | u32 request_irq_exits; |
248 | u32 irq_exits; | |
e1beb1d3 | 249 | u32 host_state_reload; |
2cc51560 | 250 | u32 efer_reload; |
f096ed85 | 251 | u32 fpu_reload; |
f2b5756b AK |
252 | u32 insn_emulation; |
253 | u32 insn_emulation_fail; | |
1165f5fe AK |
254 | }; |
255 | ||
2eeb2e94 GH |
256 | struct kvm_io_device { |
257 | void (*read)(struct kvm_io_device *this, | |
258 | gpa_t addr, | |
259 | int len, | |
260 | void *val); | |
261 | void (*write)(struct kvm_io_device *this, | |
262 | gpa_t addr, | |
263 | int len, | |
264 | const void *val); | |
265 | int (*in_range)(struct kvm_io_device *this, gpa_t addr); | |
266 | void (*destructor)(struct kvm_io_device *this); | |
267 | ||
268 | void *private; | |
269 | }; | |
270 | ||
271 | static inline void kvm_iodevice_read(struct kvm_io_device *dev, | |
272 | gpa_t addr, | |
273 | int len, | |
274 | void *val) | |
275 | { | |
276 | dev->read(dev, addr, len, val); | |
277 | } | |
278 | ||
279 | static inline void kvm_iodevice_write(struct kvm_io_device *dev, | |
280 | gpa_t addr, | |
281 | int len, | |
282 | const void *val) | |
283 | { | |
284 | dev->write(dev, addr, len, val); | |
285 | } | |
286 | ||
287 | static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr) | |
288 | { | |
289 | return dev->in_range(dev, addr); | |
290 | } | |
291 | ||
292 | static inline void kvm_iodevice_destructor(struct kvm_io_device *dev) | |
293 | { | |
74906345 ED |
294 | if (dev->destructor) |
295 | dev->destructor(dev); | |
2eeb2e94 GH |
296 | } |
297 | ||
298 | /* | |
299 | * It would be nice to use something smarter than a linear search, TBD... | |
300 | * Thankfully we dont expect many devices to register (famous last words :), | |
301 | * so until then it will suffice. At least its abstracted so we can change | |
302 | * in one place. | |
303 | */ | |
304 | struct kvm_io_bus { | |
305 | int dev_count; | |
306 | #define NR_IOBUS_DEVS 6 | |
307 | struct kvm_io_device *devs[NR_IOBUS_DEVS]; | |
308 | }; | |
309 | ||
310 | void kvm_io_bus_init(struct kvm_io_bus *bus); | |
311 | void kvm_io_bus_destroy(struct kvm_io_bus *bus); | |
312 | struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr); | |
313 | void kvm_io_bus_register_dev(struct kvm_io_bus *bus, | |
314 | struct kvm_io_device *dev); | |
315 | ||
34c16eec ZX |
316 | #ifdef CONFIG_HAS_IOMEM |
317 | #define KVM_VCPU_MMIO \ | |
318 | int mmio_needed; \ | |
319 | int mmio_read_completed; \ | |
320 | int mmio_is_write; \ | |
321 | int mmio_size; \ | |
322 | unsigned char mmio_data[8]; \ | |
6aa8b732 AK |
323 | gpa_t mmio_phys_addr; |
324 | ||
34c16eec ZX |
325 | #else |
326 | #define KVM_VCPU_MMIO | |
1961d276 | 327 | |
34c16eec | 328 | #endif |
1165f5fe | 329 | |
34c16eec ZX |
330 | #define KVM_VCPU_COMM \ |
331 | struct kvm *kvm; \ | |
332 | struct preempt_notifier preempt_notifier; \ | |
333 | int vcpu_id; \ | |
334 | struct mutex mutex; \ | |
335 | int cpu; \ | |
336 | struct kvm_run *run; \ | |
337 | int guest_mode; \ | |
338 | unsigned long requests; \ | |
339 | struct kvm_guest_debug guest_debug; \ | |
340 | int fpu_active; \ | |
341 | int guest_fpu_loaded; \ | |
342 | wait_queue_head_t wq; \ | |
343 | int sigset_active; \ | |
344 | sigset_t sigset; \ | |
ba1389b7 | 345 | struct kvm_vcpu_stat stat; \ |
34c16eec | 346 | KVM_VCPU_MMIO |
6aa8b732 | 347 | |
e8207547 AK |
348 | struct kvm_mem_alias { |
349 | gfn_t base_gfn; | |
350 | unsigned long npages; | |
351 | gfn_t target_gfn; | |
352 | }; | |
353 | ||
6aa8b732 AK |
354 | struct kvm_memory_slot { |
355 | gfn_t base_gfn; | |
356 | unsigned long npages; | |
357 | unsigned long flags; | |
290fc38d | 358 | unsigned long *rmap; |
6aa8b732 | 359 | unsigned long *dirty_bitmap; |
8a7ae055 | 360 | unsigned long userspace_addr; |
80b14b5b | 361 | int user_alloc; |
6aa8b732 AK |
362 | }; |
363 | ||
ba1389b7 | 364 | struct kvm_vm_stat { |
4cee5764 AK |
365 | u32 mmu_shadow_zapped; |
366 | u32 mmu_pte_write; | |
367 | u32 mmu_pte_updated; | |
368 | u32 mmu_pde_zapped; | |
369 | u32 mmu_flooded; | |
370 | u32 mmu_recycled; | |
ba1389b7 AK |
371 | }; |
372 | ||
6aa8b732 | 373 | struct kvm { |
11ec2804 | 374 | struct mutex lock; /* protects everything except vcpus */ |
e8207547 AK |
375 | int naliases; |
376 | struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS]; | |
6aa8b732 | 377 | int nmemslots; |
e0d62c7f IE |
378 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + |
379 | KVM_PRIVATE_MEM_SLOTS]; | |
cea0f0e7 AK |
380 | /* |
381 | * Hash table of struct kvm_mmu_page. | |
382 | */ | |
6aa8b732 | 383 | struct list_head active_mmu_pages; |
82ce2c96 IE |
384 | unsigned int n_free_mmu_pages; |
385 | unsigned int n_requested_mmu_pages; | |
386 | unsigned int n_alloc_mmu_pages; | |
cea0f0e7 | 387 | struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; |
fb3f0f51 | 388 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
cd4a4e53 | 389 | unsigned long rmap_overflow; |
133de902 | 390 | struct list_head vm_list; |
bccf2150 | 391 | struct file *filp; |
2eeb2e94 | 392 | struct kvm_io_bus mmio_bus; |
74906345 | 393 | struct kvm_io_bus pio_bus; |
85f455f7 | 394 | struct kvm_pic *vpic; |
1fd4f2a5 | 395 | struct kvm_ioapic *vioapic; |
932f72ad | 396 | int round_robin_prev_vcpu; |
cbc94022 | 397 | unsigned int tss_addr; |
f78e0e2e | 398 | struct page *apic_access_page; |
ba1389b7 | 399 | struct kvm_vm_stat stat; |
6aa8b732 AK |
400 | }; |
401 | ||
85f455f7 ED |
402 | static inline struct kvm_pic *pic_irqchip(struct kvm *kvm) |
403 | { | |
404 | return kvm->vpic; | |
405 | } | |
406 | ||
1fd4f2a5 ED |
407 | static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm) |
408 | { | |
409 | return kvm->vioapic; | |
410 | } | |
411 | ||
85f455f7 ED |
412 | static inline int irqchip_in_kernel(struct kvm *kvm) |
413 | { | |
56919c5c | 414 | return pic_irqchip(kvm) != NULL; |
85f455f7 ED |
415 | } |
416 | ||
6aa8b732 AK |
417 | struct descriptor_table { |
418 | u16 limit; | |
419 | unsigned long base; | |
420 | } __attribute__((packed)); | |
421 | ||
cbdd1bea | 422 | struct kvm_x86_ops { |
6aa8b732 AK |
423 | int (*cpu_has_kvm_support)(void); /* __init */ |
424 | int (*disabled_by_bios)(void); /* __init */ | |
425 | void (*hardware_enable)(void *dummy); /* __init */ | |
426 | void (*hardware_disable)(void *dummy); | |
002c7f7c | 427 | void (*check_processor_compatibility)(void *rtn); |
6aa8b732 AK |
428 | int (*hardware_setup)(void); /* __init */ |
429 | void (*hardware_unsetup)(void); /* __exit */ | |
430 | ||
fb3f0f51 RR |
431 | /* Create, but do not attach this VCPU */ |
432 | struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id); | |
6aa8b732 | 433 | void (*vcpu_free)(struct kvm_vcpu *vcpu); |
e00c8cf2 | 434 | int (*vcpu_reset)(struct kvm_vcpu *vcpu); |
6aa8b732 | 435 | |
04d2cc77 | 436 | void (*prepare_guest_switch)(struct kvm_vcpu *vcpu); |
15ad7146 | 437 | void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); |
6aa8b732 | 438 | void (*vcpu_put)(struct kvm_vcpu *vcpu); |
774c47f1 | 439 | void (*vcpu_decache)(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
440 | |
441 | int (*set_guest_debug)(struct kvm_vcpu *vcpu, | |
442 | struct kvm_debug_guest *dbg); | |
04d2cc77 | 443 | void (*guest_debug_pre)(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
444 | int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata); |
445 | int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
446 | u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); | |
447 | void (*get_segment)(struct kvm_vcpu *vcpu, | |
448 | struct kvm_segment *var, int seg); | |
449 | void (*set_segment)(struct kvm_vcpu *vcpu, | |
450 | struct kvm_segment *var, int seg); | |
6aa8b732 | 451 | void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); |
25c4c276 | 452 | void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); |
6aa8b732 | 453 | void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); |
6aa8b732 AK |
454 | void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); |
455 | void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); | |
456 | void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); | |
457 | void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
458 | void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
459 | void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
460 | void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
461 | unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr); | |
462 | void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value, | |
463 | int *exception); | |
464 | void (*cache_regs)(struct kvm_vcpu *vcpu); | |
465 | void (*decache_regs)(struct kvm_vcpu *vcpu); | |
466 | unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); | |
467 | void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); | |
468 | ||
6aa8b732 AK |
469 | void (*tlb_flush)(struct kvm_vcpu *vcpu); |
470 | void (*inject_page_fault)(struct kvm_vcpu *vcpu, | |
471 | unsigned long addr, u32 err_code); | |
472 | ||
473 | void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code); | |
474 | ||
04d2cc77 AK |
475 | void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run); |
476 | int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu); | |
6aa8b732 | 477 | void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); |
102d8325 IM |
478 | void (*patch_hypercall)(struct kvm_vcpu *vcpu, |
479 | unsigned char *hypercall_addr); | |
2a8067f1 ED |
480 | int (*get_irq)(struct kvm_vcpu *vcpu); |
481 | void (*set_irq)(struct kvm_vcpu *vcpu, int vec); | |
04d2cc77 AK |
482 | void (*inject_pending_irq)(struct kvm_vcpu *vcpu); |
483 | void (*inject_pending_vectors)(struct kvm_vcpu *vcpu, | |
484 | struct kvm_run *run); | |
cbc94022 IE |
485 | |
486 | int (*set_tss_addr)(struct kvm *kvm, unsigned int addr); | |
6aa8b732 AK |
487 | }; |
488 | ||
cbdd1bea | 489 | extern struct kvm_x86_ops *kvm_x86_ops; |
6aa8b732 | 490 | |
f0242478 RR |
491 | /* The guest did something we don't support. */ |
492 | #define pr_unimpl(vcpu, fmt, ...) \ | |
493 | do { \ | |
494 | if (printk_ratelimit()) \ | |
495 | printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ | |
496 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ | |
d77c26fc | 497 | } while (0) |
f0242478 | 498 | |
6aa8b732 AK |
499 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
500 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
501 | ||
fb3f0f51 RR |
502 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
503 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
504 | ||
313a3dc7 CO |
505 | void vcpu_load(struct kvm_vcpu *vcpu); |
506 | void vcpu_put(struct kvm_vcpu *vcpu); | |
507 | ||
e9b11c17 ZX |
508 | void decache_vcpus_on_cpu(int cpu); |
509 | ||
313a3dc7 | 510 | |
f8c16bba | 511 | int kvm_init(void *opaque, unsigned int vcpu_size, |
c16f862d | 512 | struct module *module); |
cb498ea2 | 513 | void kvm_exit(void); |
6aa8b732 | 514 | |
b5a33a75 AK |
515 | int kvm_mmu_module_init(void); |
516 | void kvm_mmu_module_exit(void); | |
517 | ||
6aa8b732 | 518 | void kvm_mmu_destroy(struct kvm_vcpu *vcpu); |
8018c27b IM |
519 | int kvm_mmu_create(struct kvm_vcpu *vcpu); |
520 | int kvm_mmu_setup(struct kvm_vcpu *vcpu); | |
c7addb90 | 521 | void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte); |
6aa8b732 AK |
522 | |
523 | int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); | |
90cb0529 AK |
524 | void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot); |
525 | void kvm_mmu_zap_all(struct kvm *kvm); | |
82ce2c96 | 526 | void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages); |
6aa8b732 | 527 | |
4a4c9924 | 528 | hpa_t gpa_to_hpa(struct kvm *kvm, gpa_t gpa); |
6aa8b732 AK |
529 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) |
530 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
531 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
532 | hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva); | |
039576c0 | 533 | struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva); |
6aa8b732 | 534 | |
cea7bb21 | 535 | extern struct page *bad_page; |
6aa8b732 | 536 | |
cea7bb21 | 537 | int is_error_page(struct page *page); |
f9d46eb0 | 538 | int kvm_is_error_hva(unsigned long addr); |
210c7c4d IE |
539 | int kvm_set_memory_region(struct kvm *kvm, |
540 | struct kvm_userspace_memory_region *mem, | |
541 | int user_alloc); | |
f78e0e2e SY |
542 | int __kvm_set_memory_region(struct kvm *kvm, |
543 | struct kvm_userspace_memory_region *mem, | |
544 | int user_alloc); | |
290fc38d | 545 | gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn); |
954bbbc2 | 546 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
8a7ae055 | 547 | void kvm_release_page(struct page *page); |
195aefde IE |
548 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
549 | int len); | |
550 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); | |
551 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, | |
552 | int offset, int len); | |
553 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
554 | unsigned long len); | |
555 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); | |
556 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 557 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 558 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
559 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
560 | ||
561 | enum emulation_result { | |
562 | EMULATE_DONE, /* no further processing */ | |
563 | EMULATE_DO_MMIO, /* kvm_run filled with mmio request */ | |
564 | EMULATE_FAIL, /* can't emulate this instruction */ | |
565 | }; | |
566 | ||
567 | int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run, | |
3427318f | 568 | unsigned long cr2, u16 error_code, int no_decode); |
054b1369 | 569 | void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context); |
6aa8b732 AK |
570 | void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); |
571 | void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
572 | void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, | |
573 | unsigned long *rflags); | |
574 | ||
575 | unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); | |
576 | void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, | |
577 | unsigned long *rflags); | |
35f3f286 AK |
578 | int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data); |
579 | int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
6aa8b732 AK |
580 | |
581 | struct x86_emulate_ctxt; | |
582 | ||
d77c26fc | 583 | int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, |
3090dd73 LV |
584 | int size, unsigned port); |
585 | int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, | |
586 | int size, unsigned long count, int down, | |
587 | gva_t address, int rep, unsigned port); | |
06465c5a | 588 | void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); |
d3bef15f | 589 | int kvm_emulate_halt(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
590 | int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address); |
591 | int emulate_clts(struct kvm_vcpu *vcpu); | |
d77c26fc | 592 | int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr, |
6aa8b732 AK |
593 | unsigned long *dest); |
594 | int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, | |
595 | unsigned long value); | |
596 | ||
597 | void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); | |
598 | void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0); | |
599 | void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0); | |
600 | void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0); | |
7017fc3d | 601 | unsigned long get_cr8(struct kvm_vcpu *vcpu); |
6aa8b732 | 602 | void lmsw(struct kvm_vcpu *vcpu, unsigned long msw); |
1747fb71 | 603 | void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); |
6aa8b732 | 604 | |
3bab1f5d AK |
605 | int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); |
606 | int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); | |
6aa8b732 AK |
607 | |
608 | void fx_init(struct kvm_vcpu *vcpu); | |
609 | ||
8776e519 | 610 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
6aa8b732 | 611 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
612 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
613 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
d9e368d6 | 614 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
6aa8b732 | 615 | |
e7d5d76c | 616 | int emulator_read_std(unsigned long addr, |
d77c26fc | 617 | void *val, |
e7d5d76c LV |
618 | unsigned int bytes, |
619 | struct kvm_vcpu *vcpu); | |
620 | int emulator_write_emulated(unsigned long addr, | |
621 | const void *val, | |
622 | unsigned int bytes, | |
623 | struct kvm_vcpu *vcpu); | |
6aa8b732 AK |
624 | |
625 | unsigned long segment_base(u16 selector); | |
626 | ||
09072daf | 627 | void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, |
fe551881 | 628 | const u8 *new, int bytes); |
a436036b | 629 | int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); |
22d95b12 | 630 | void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); |
17c3ba9d AK |
631 | int kvm_mmu_load(struct kvm_vcpu *vcpu); |
632 | void kvm_mmu_unload(struct kvm_vcpu *vcpu); | |
ebeace86 | 633 | |
7aa81cc0 AL |
634 | int kvm_emulate_hypercall(struct kvm_vcpu *vcpu); |
635 | ||
636 | int kvm_fix_hypercall(struct kvm_vcpu *vcpu); | |
270fd9b9 | 637 | |
043405e1 CO |
638 | long kvm_arch_dev_ioctl(struct file *filp, |
639 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
640 | long kvm_arch_vcpu_ioctl(struct file *filp, |
641 | unsigned int ioctl, unsigned long arg); | |
642 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
643 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
018d00d2 ZX |
644 | |
645 | int kvm_dev_ioctl_check_extension(long ext); | |
646 | ||
1fe779f8 CO |
647 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
648 | struct | |
649 | kvm_userspace_memory_region *mem, | |
650 | int user_alloc); | |
651 | long kvm_arch_vm_ioctl(struct file *filp, | |
652 | unsigned int ioctl, unsigned long arg); | |
653 | void kvm_arch_destroy_vm(struct kvm *kvm); | |
313a3dc7 | 654 | |
d0752060 HB |
655 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
656 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
657 | ||
8b006791 ZX |
658 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
659 | struct kvm_translation *tr); | |
660 | ||
b6c7a5dc HB |
661 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
662 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
663 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
664 | struct kvm_sregs *sregs); | |
665 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
666 | struct kvm_sregs *sregs); | |
667 | int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu, | |
668 | struct kvm_debug_guest *dbg); | |
669 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); | |
670 | ||
f8c16bba ZX |
671 | int kvm_arch_init(void *opaque); |
672 | void kvm_arch_exit(void); | |
043405e1 | 673 | |
e9b11c17 ZX |
674 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
675 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
676 | ||
677 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
678 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
679 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
680 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
681 | void kvm_arch_vcpu_destory(struct kvm_vcpu *vcpu); | |
682 | ||
683 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
684 | void kvm_arch_hardware_enable(void *garbage); | |
685 | void kvm_arch_hardware_disable(void *garbage); | |
686 | int kvm_arch_hardware_setup(void); | |
687 | void kvm_arch_hardware_unsetup(void); | |
688 | void kvm_arch_check_processor_compat(void *rtn); | |
689 | ||
d19a9cd2 ZX |
690 | void kvm_free_physmem(struct kvm *kvm); |
691 | ||
692 | struct kvm *kvm_arch_create_vm(void); | |
693 | void kvm_arch_destroy_vm(struct kvm *kvm); | |
e9b11c17 | 694 | |
d172fcd3 LV |
695 | static inline void kvm_guest_enter(void) |
696 | { | |
e56a7a28 | 697 | account_system_vtime(current); |
d172fcd3 LV |
698 | current->flags |= PF_VCPU; |
699 | } | |
700 | ||
701 | static inline void kvm_guest_exit(void) | |
702 | { | |
e56a7a28 | 703 | account_system_vtime(current); |
d172fcd3 LV |
704 | current->flags &= ~PF_VCPU; |
705 | } | |
706 | ||
6aa8b732 AK |
707 | static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot) |
708 | { | |
709 | return slot - kvm->memslots; | |
710 | } | |
711 | ||
712 | static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) | |
713 | { | |
714 | struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); | |
715 | ||
5972e953 | 716 | return (struct kvm_mmu_page *)page_private(page); |
6aa8b732 AK |
717 | } |
718 | ||
719 | static inline u16 read_fs(void) | |
720 | { | |
721 | u16 seg; | |
d77c26fc | 722 | asm("mov %%fs, %0" : "=g"(seg)); |
6aa8b732 AK |
723 | return seg; |
724 | } | |
725 | ||
726 | static inline u16 read_gs(void) | |
727 | { | |
728 | u16 seg; | |
d77c26fc | 729 | asm("mov %%gs, %0" : "=g"(seg)); |
6aa8b732 AK |
730 | return seg; |
731 | } | |
732 | ||
733 | static inline u16 read_ldt(void) | |
734 | { | |
735 | u16 ldt; | |
d77c26fc | 736 | asm("sldt %0" : "=g"(ldt)); |
6aa8b732 AK |
737 | return ldt; |
738 | } | |
739 | ||
740 | static inline void load_fs(u16 sel) | |
741 | { | |
d77c26fc | 742 | asm("mov %0, %%fs" : : "rm"(sel)); |
6aa8b732 AK |
743 | } |
744 | ||
745 | static inline void load_gs(u16 sel) | |
746 | { | |
d77c26fc | 747 | asm("mov %0, %%gs" : : "rm"(sel)); |
6aa8b732 AK |
748 | } |
749 | ||
750 | #ifndef load_ldt | |
751 | static inline void load_ldt(u16 sel) | |
752 | { | |
d77c26fc | 753 | asm("lldt %0" : : "rm"(sel)); |
6aa8b732 AK |
754 | } |
755 | #endif | |
756 | ||
757 | static inline void get_idt(struct descriptor_table *table) | |
758 | { | |
d77c26fc | 759 | asm("sidt %0" : "=m"(*table)); |
6aa8b732 AK |
760 | } |
761 | ||
762 | static inline void get_gdt(struct descriptor_table *table) | |
763 | { | |
d77c26fc | 764 | asm("sgdt %0" : "=m"(*table)); |
6aa8b732 AK |
765 | } |
766 | ||
767 | static inline unsigned long read_tr_base(void) | |
768 | { | |
769 | u16 tr; | |
d77c26fc | 770 | asm("str %0" : "=g"(tr)); |
6aa8b732 AK |
771 | return segment_base(tr); |
772 | } | |
773 | ||
05b3e0c2 | 774 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
775 | static inline unsigned long read_msr(unsigned long msr) |
776 | { | |
777 | u64 value; | |
778 | ||
779 | rdmsrl(msr, value); | |
780 | return value; | |
781 | } | |
782 | #endif | |
783 | ||
b114b080 | 784 | static inline void fx_save(struct i387_fxsave_struct *image) |
6aa8b732 | 785 | { |
d77c26fc | 786 | asm("fxsave (%0)":: "r" (image)); |
6aa8b732 AK |
787 | } |
788 | ||
b114b080 | 789 | static inline void fx_restore(struct i387_fxsave_struct *image) |
6aa8b732 | 790 | { |
d77c26fc | 791 | asm("fxrstor (%0)":: "r" (image)); |
6aa8b732 AK |
792 | } |
793 | ||
794 | static inline void fpu_init(void) | |
795 | { | |
d77c26fc | 796 | asm("finit"); |
6aa8b732 AK |
797 | } |
798 | ||
799 | static inline u32 get_rdx_init_val(void) | |
800 | { | |
801 | return 0x600; /* P6 family */ | |
802 | } | |
803 | ||
804 | #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30" | |
805 | #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2" | |
806 | #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3" | |
807 | #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30" | |
808 | #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0" | |
809 | #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0" | |
810 | #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4" | |
811 | #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4" | |
812 | #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30" | |
813 | ||
814 | #define MSR_IA32_TIME_STAMP_COUNTER 0x010 | |
815 | ||
816 | #define TSS_IOPB_BASE_OFFSET 0x66 | |
817 | #define TSS_BASE_SIZE 0x68 | |
818 | #define TSS_IOPB_SIZE (65536 / 8) | |
819 | #define TSS_REDIRECTION_SIZE (256 / 8) | |
820 | #define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) | |
821 | ||
ba1389b7 AK |
822 | enum kvm_stat_kind { |
823 | KVM_STAT_VM, | |
824 | KVM_STAT_VCPU, | |
825 | }; | |
826 | ||
417bc304 HB |
827 | struct kvm_stats_debugfs_item { |
828 | const char *name; | |
829 | int offset; | |
ba1389b7 | 830 | enum kvm_stat_kind kind; |
417bc304 HB |
831 | struct dentry *dentry; |
832 | }; | |
833 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
834 | ||
6aa8b732 | 835 | #endif |