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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> | |
06ff0d37 MR |
13 | #include <linux/signal.h> |
14 | #include <linux/sched.h> | |
6aa8b732 | 15 | #include <linux/mm.h> |
15ad7146 | 16 | #include <linux/preempt.h> |
e8edc6e0 | 17 | #include <asm/signal.h> |
6aa8b732 | 18 | |
6aa8b732 | 19 | #include <linux/kvm.h> |
102d8325 | 20 | #include <linux/kvm_para.h> |
6aa8b732 | 21 | |
f802a307 RR |
22 | #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1) |
23 | #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD)) | |
24 | #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS|0xFFFFFF0000000000ULL) | |
6aa8b732 | 25 | |
6aa8b732 | 26 | #define KVM_GUEST_CR0_MASK \ |
707d92fa RR |
27 | (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \ |
28 | | X86_CR0_NW | X86_CR0_CD) | |
6aa8b732 | 29 | #define KVM_VM_CR0_ALWAYS_ON \ |
707d92fa RR |
30 | (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \ |
31 | | X86_CR0_MP) | |
6aa8b732 | 32 | #define KVM_GUEST_CR4_MASK \ |
66aee91a RR |
33 | (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE) |
34 | #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE) | |
35 | #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE) | |
6aa8b732 AK |
36 | |
37 | #define INVALID_PAGE (~(hpa_t)0) | |
38 | #define UNMAPPED_GVA (~(gpa_t)0) | |
39 | ||
ef9254df | 40 | #define KVM_MAX_VCPUS 4 |
e8207547 | 41 | #define KVM_ALIAS_SLOTS 4 |
2e2c618d | 42 | #define KVM_MEMORY_SLOTS 8 |
7494c0cc | 43 | #define KVM_NUM_MMU_PAGES 1024 |
ebeace86 AK |
44 | #define KVM_MIN_FREE_MMU_PAGES 5 |
45 | #define KVM_REFILL_PAGES 25 | |
06465c5a | 46 | #define KVM_MAX_CPUID_ENTRIES 40 |
6aa8b732 | 47 | |
6aa8b732 | 48 | #define DE_VECTOR 0 |
7aa81cc0 | 49 | #define UD_VECTOR 6 |
7807fa6c | 50 | #define NM_VECTOR 7 |
6aa8b732 AK |
51 | #define DF_VECTOR 8 |
52 | #define TS_VECTOR 10 | |
53 | #define NP_VECTOR 11 | |
54 | #define SS_VECTOR 12 | |
55 | #define GP_VECTOR 13 | |
56 | #define PF_VECTOR 14 | |
57 | ||
58 | #define SELECTOR_TI_MASK (1 << 2) | |
59 | #define SELECTOR_RPL_MASK 0x03 | |
60 | ||
61 | #define IOPL_SHIFT 12 | |
62 | ||
039576c0 AK |
63 | #define KVM_PIO_PAGE_OFFSET 1 |
64 | ||
d9e368d6 AK |
65 | /* |
66 | * vcpu->requests bit members | |
67 | */ | |
68 | #define KVM_TLB_FLUSH 0 | |
69 | ||
6aa8b732 AK |
70 | /* |
71 | * Address types: | |
72 | * | |
73 | * gva - guest virtual address | |
74 | * gpa - guest physical address | |
75 | * gfn - guest frame number | |
76 | * hva - host virtual address | |
77 | * hpa - host physical address | |
78 | * hfn - host frame number | |
79 | */ | |
80 | ||
81 | typedef unsigned long gva_t; | |
82 | typedef u64 gpa_t; | |
83 | typedef unsigned long gfn_t; | |
84 | ||
85 | typedef unsigned long hva_t; | |
86 | typedef u64 hpa_t; | |
87 | typedef unsigned long hfn_t; | |
88 | ||
cea0f0e7 AK |
89 | #define NR_PTE_CHAIN_ENTRIES 5 |
90 | ||
91 | struct kvm_pte_chain { | |
92 | u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES]; | |
93 | struct hlist_node link; | |
94 | }; | |
95 | ||
96 | /* | |
97 | * kvm_mmu_page_role, below, is defined as: | |
98 | * | |
99 | * bits 0:3 - total guest paging levels (2-4, or zero for real mode) | |
100 | * bits 4:7 - page table level for this shadow (1-4) | |
101 | * bits 8:9 - page table quadrant for 2-level guests | |
102 | * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode) | |
d55e2cb2 | 103 | * bits 17:19 - "access" - the user, writable, and nx bits of a huge page pde |
cea0f0e7 AK |
104 | */ |
105 | union kvm_mmu_page_role { | |
106 | unsigned word; | |
107 | struct { | |
108 | unsigned glevels : 4; | |
109 | unsigned level : 4; | |
110 | unsigned quadrant : 2; | |
111 | unsigned pad_for_nice_hex_output : 6; | |
112 | unsigned metaphysical : 1; | |
d55e2cb2 | 113 | unsigned hugepage_access : 3; |
cea0f0e7 AK |
114 | }; |
115 | }; | |
116 | ||
6aa8b732 AK |
117 | struct kvm_mmu_page { |
118 | struct list_head link; | |
cea0f0e7 AK |
119 | struct hlist_node hash_link; |
120 | ||
121 | /* | |
122 | * The following two entries are used to key the shadow page in the | |
123 | * hash table. | |
124 | */ | |
125 | gfn_t gfn; | |
126 | union kvm_mmu_page_role role; | |
127 | ||
47ad8e68 | 128 | u64 *spt; |
290fc38d IE |
129 | /* hold the gfn of each spte inside spt */ |
130 | gfn_t *gfns; | |
6aa8b732 AK |
131 | unsigned long slot_bitmap; /* One bit set per slot which has memory |
132 | * in this shadow page. | |
133 | */ | |
cea0f0e7 | 134 | int multimapped; /* More than one parent_pte? */ |
3bb65a22 | 135 | int root_count; /* Currently serving as active root */ |
cea0f0e7 AK |
136 | union { |
137 | u64 *parent_pte; /* !multimapped */ | |
138 | struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ | |
139 | }; | |
6aa8b732 AK |
140 | }; |
141 | ||
6aa8b732 | 142 | struct kvm_vcpu; |
c16f862d | 143 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 AK |
144 | |
145 | /* | |
146 | * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level | |
147 | * 32-bit). The kvm_mmu structure abstracts the details of the current mmu | |
148 | * mode. | |
149 | */ | |
150 | struct kvm_mmu { | |
151 | void (*new_cr3)(struct kvm_vcpu *vcpu); | |
152 | int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); | |
6aa8b732 AK |
153 | void (*free)(struct kvm_vcpu *vcpu); |
154 | gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva); | |
c7addb90 AK |
155 | void (*prefetch_page)(struct kvm_vcpu *vcpu, |
156 | struct kvm_mmu_page *page); | |
6aa8b732 AK |
157 | hpa_t root_hpa; |
158 | int root_level; | |
159 | int shadow_root_level; | |
17ac10ad AK |
160 | |
161 | u64 *pae_root; | |
6aa8b732 AK |
162 | }; |
163 | ||
290fc38d | 164 | #define KVM_NR_MEM_OBJS 40 |
714b93da AK |
165 | |
166 | struct kvm_mmu_memory_cache { | |
167 | int nobjs; | |
168 | void *objects[KVM_NR_MEM_OBJS]; | |
169 | }; | |
170 | ||
171 | /* | |
172 | * We don't want allocation failures within the mmu code, so we preallocate | |
173 | * enough memory for a single page fault in a cache. | |
174 | */ | |
6aa8b732 AK |
175 | struct kvm_guest_debug { |
176 | int enabled; | |
177 | unsigned long bp[4]; | |
178 | int singlestep; | |
179 | }; | |
180 | ||
181 | enum { | |
182 | VCPU_REGS_RAX = 0, | |
183 | VCPU_REGS_RCX = 1, | |
184 | VCPU_REGS_RDX = 2, | |
185 | VCPU_REGS_RBX = 3, | |
186 | VCPU_REGS_RSP = 4, | |
187 | VCPU_REGS_RBP = 5, | |
188 | VCPU_REGS_RSI = 6, | |
189 | VCPU_REGS_RDI = 7, | |
05b3e0c2 | 190 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
191 | VCPU_REGS_R8 = 8, |
192 | VCPU_REGS_R9 = 9, | |
193 | VCPU_REGS_R10 = 10, | |
194 | VCPU_REGS_R11 = 11, | |
195 | VCPU_REGS_R12 = 12, | |
196 | VCPU_REGS_R13 = 13, | |
197 | VCPU_REGS_R14 = 14, | |
198 | VCPU_REGS_R15 = 15, | |
199 | #endif | |
200 | NR_VCPU_REGS | |
201 | }; | |
202 | ||
203 | enum { | |
204 | VCPU_SREG_CS, | |
205 | VCPU_SREG_DS, | |
206 | VCPU_SREG_ES, | |
207 | VCPU_SREG_FS, | |
208 | VCPU_SREG_GS, | |
209 | VCPU_SREG_SS, | |
210 | VCPU_SREG_TR, | |
211 | VCPU_SREG_LDTR, | |
212 | }; | |
213 | ||
3427318f LV |
214 | #include "x86_emulate.h" |
215 | ||
039576c0 AK |
216 | struct kvm_pio_request { |
217 | unsigned long count; | |
218 | int cur_count; | |
219 | struct page *guest_pages[2]; | |
220 | unsigned guest_page_offset; | |
221 | int in; | |
74906345 | 222 | int port; |
039576c0 AK |
223 | int size; |
224 | int string; | |
225 | int down; | |
226 | int rep; | |
227 | }; | |
228 | ||
1165f5fe AK |
229 | struct kvm_stat { |
230 | u32 pf_fixed; | |
231 | u32 pf_guest; | |
232 | u32 tlb_flush; | |
233 | u32 invlpg; | |
234 | ||
235 | u32 exits; | |
236 | u32 io_exits; | |
237 | u32 mmio_exits; | |
238 | u32 signal_exits; | |
239 | u32 irq_window_exits; | |
240 | u32 halt_exits; | |
b6958ce4 | 241 | u32 halt_wakeup; |
1165f5fe AK |
242 | u32 request_irq_exits; |
243 | u32 irq_exits; | |
e6adf283 | 244 | u32 light_exits; |
2cc51560 | 245 | u32 efer_reload; |
1165f5fe AK |
246 | }; |
247 | ||
2eeb2e94 GH |
248 | struct kvm_io_device { |
249 | void (*read)(struct kvm_io_device *this, | |
250 | gpa_t addr, | |
251 | int len, | |
252 | void *val); | |
253 | void (*write)(struct kvm_io_device *this, | |
254 | gpa_t addr, | |
255 | int len, | |
256 | const void *val); | |
257 | int (*in_range)(struct kvm_io_device *this, gpa_t addr); | |
258 | void (*destructor)(struct kvm_io_device *this); | |
259 | ||
260 | void *private; | |
261 | }; | |
262 | ||
263 | static inline void kvm_iodevice_read(struct kvm_io_device *dev, | |
264 | gpa_t addr, | |
265 | int len, | |
266 | void *val) | |
267 | { | |
268 | dev->read(dev, addr, len, val); | |
269 | } | |
270 | ||
271 | static inline void kvm_iodevice_write(struct kvm_io_device *dev, | |
272 | gpa_t addr, | |
273 | int len, | |
274 | const void *val) | |
275 | { | |
276 | dev->write(dev, addr, len, val); | |
277 | } | |
278 | ||
279 | static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr) | |
280 | { | |
281 | return dev->in_range(dev, addr); | |
282 | } | |
283 | ||
284 | static inline void kvm_iodevice_destructor(struct kvm_io_device *dev) | |
285 | { | |
74906345 ED |
286 | if (dev->destructor) |
287 | dev->destructor(dev); | |
2eeb2e94 GH |
288 | } |
289 | ||
290 | /* | |
291 | * It would be nice to use something smarter than a linear search, TBD... | |
292 | * Thankfully we dont expect many devices to register (famous last words :), | |
293 | * so until then it will suffice. At least its abstracted so we can change | |
294 | * in one place. | |
295 | */ | |
296 | struct kvm_io_bus { | |
297 | int dev_count; | |
298 | #define NR_IOBUS_DEVS 6 | |
299 | struct kvm_io_device *devs[NR_IOBUS_DEVS]; | |
300 | }; | |
301 | ||
302 | void kvm_io_bus_init(struct kvm_io_bus *bus); | |
303 | void kvm_io_bus_destroy(struct kvm_io_bus *bus); | |
304 | struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr); | |
305 | void kvm_io_bus_register_dev(struct kvm_io_bus *bus, | |
306 | struct kvm_io_device *dev); | |
307 | ||
6aa8b732 AK |
308 | struct kvm_vcpu { |
309 | struct kvm *kvm; | |
15ad7146 | 310 | struct preempt_notifier preempt_notifier; |
dad3795d | 311 | int vcpu_id; |
6aa8b732 AK |
312 | struct mutex mutex; |
313 | int cpu; | |
0cc5064d | 314 | u64 host_tsc; |
9a2bb7f4 | 315 | struct kvm_run *run; |
c1150d8c | 316 | int interrupt_window_open; |
d9e368d6 AK |
317 | int guest_mode; |
318 | unsigned long requests; | |
6aa8b732 | 319 | unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */ |
9eb829ce | 320 | DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS); |
6aa8b732 AK |
321 | unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */ |
322 | unsigned long rip; /* needs vcpu_load_rsp_rip() */ | |
323 | ||
324 | unsigned long cr0; | |
325 | unsigned long cr2; | |
326 | unsigned long cr3; | |
327 | unsigned long cr4; | |
328 | unsigned long cr8; | |
1342d353 | 329 | u64 pdptrs[4]; /* pae */ |
6aa8b732 AK |
330 | u64 shadow_efer; |
331 | u64 apic_base; | |
97222cc8 | 332 | struct kvm_lapic *apic; /* kernel irqchip context */ |
c5ec1534 HQ |
333 | #define VCPU_MP_STATE_RUNNABLE 0 |
334 | #define VCPU_MP_STATE_UNINITIALIZED 1 | |
335 | #define VCPU_MP_STATE_INIT_RECEIVED 2 | |
336 | #define VCPU_MP_STATE_SIPI_RECEIVED 3 | |
337 | #define VCPU_MP_STATE_HALTED 4 | |
338 | int mp_state; | |
339 | int sipi_vector; | |
6f00e68f | 340 | u64 ia32_misc_enable_msr; |
6aa8b732 | 341 | |
6aa8b732 AK |
342 | struct kvm_mmu mmu; |
343 | ||
714b93da AK |
344 | struct kvm_mmu_memory_cache mmu_pte_chain_cache; |
345 | struct kvm_mmu_memory_cache mmu_rmap_desc_cache; | |
d3d25b04 AK |
346 | struct kvm_mmu_memory_cache mmu_page_cache; |
347 | struct kvm_mmu_memory_cache mmu_page_header_cache; | |
714b93da | 348 | |
86a5ba02 AK |
349 | gfn_t last_pt_write_gfn; |
350 | int last_pt_write_count; | |
12b7d28f | 351 | u64 *last_pte_updated; |
86a5ba02 | 352 | |
6aa8b732 AK |
353 | struct kvm_guest_debug guest_debug; |
354 | ||
b114b080 RR |
355 | struct i387_fxsave_struct host_fx_image; |
356 | struct i387_fxsave_struct guest_fx_image; | |
7807fa6c | 357 | int fpu_active; |
7702fd1f | 358 | int guest_fpu_loaded; |
6aa8b732 AK |
359 | |
360 | int mmio_needed; | |
361 | int mmio_read_completed; | |
362 | int mmio_is_write; | |
363 | int mmio_size; | |
364 | unsigned char mmio_data[8]; | |
365 | gpa_t mmio_phys_addr; | |
e7df56e4 | 366 | gva_t mmio_fault_cr2; |
039576c0 AK |
367 | struct kvm_pio_request pio; |
368 | void *pio_data; | |
b6958ce4 | 369 | wait_queue_head_t wq; |
6aa8b732 | 370 | |
1961d276 AK |
371 | int sigset_active; |
372 | sigset_t sigset; | |
373 | ||
1165f5fe AK |
374 | struct kvm_stat stat; |
375 | ||
6aa8b732 AK |
376 | struct { |
377 | int active; | |
378 | u8 save_iopl; | |
379 | struct kvm_save_segment { | |
380 | u16 selector; | |
381 | unsigned long base; | |
382 | u32 limit; | |
383 | u32 ar; | |
384 | } tr, es, ds, fs, gs; | |
385 | } rmode; | |
72d6e5a0 | 386 | int halt_request; /* real mode on Intel only */ |
06465c5a AK |
387 | |
388 | int cpuid_nent; | |
389 | struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES]; | |
3427318f LV |
390 | |
391 | /* emulate context */ | |
392 | ||
393 | struct x86_emulate_ctxt emulate_ctxt; | |
6aa8b732 AK |
394 | }; |
395 | ||
e8207547 AK |
396 | struct kvm_mem_alias { |
397 | gfn_t base_gfn; | |
398 | unsigned long npages; | |
399 | gfn_t target_gfn; | |
400 | }; | |
401 | ||
6aa8b732 AK |
402 | struct kvm_memory_slot { |
403 | gfn_t base_gfn; | |
404 | unsigned long npages; | |
405 | unsigned long flags; | |
406 | struct page **phys_mem; | |
290fc38d | 407 | unsigned long *rmap; |
6aa8b732 AK |
408 | unsigned long *dirty_bitmap; |
409 | }; | |
410 | ||
411 | struct kvm { | |
11ec2804 | 412 | struct mutex lock; /* protects everything except vcpus */ |
e8207547 AK |
413 | int naliases; |
414 | struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS]; | |
6aa8b732 AK |
415 | int nmemslots; |
416 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS]; | |
cea0f0e7 AK |
417 | /* |
418 | * Hash table of struct kvm_mmu_page. | |
419 | */ | |
6aa8b732 | 420 | struct list_head active_mmu_pages; |
ebeace86 | 421 | int n_free_mmu_pages; |
cea0f0e7 | 422 | struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; |
fb3f0f51 | 423 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
cd4a4e53 | 424 | unsigned long rmap_overflow; |
133de902 | 425 | struct list_head vm_list; |
bccf2150 | 426 | struct file *filp; |
2eeb2e94 | 427 | struct kvm_io_bus mmio_bus; |
74906345 | 428 | struct kvm_io_bus pio_bus; |
85f455f7 | 429 | struct kvm_pic *vpic; |
1fd4f2a5 | 430 | struct kvm_ioapic *vioapic; |
932f72ad | 431 | int round_robin_prev_vcpu; |
6aa8b732 AK |
432 | }; |
433 | ||
85f455f7 ED |
434 | static inline struct kvm_pic *pic_irqchip(struct kvm *kvm) |
435 | { | |
436 | return kvm->vpic; | |
437 | } | |
438 | ||
1fd4f2a5 ED |
439 | static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm) |
440 | { | |
441 | return kvm->vioapic; | |
442 | } | |
443 | ||
85f455f7 ED |
444 | static inline int irqchip_in_kernel(struct kvm *kvm) |
445 | { | |
446 | return pic_irqchip(kvm) != 0; | |
447 | } | |
448 | ||
6aa8b732 AK |
449 | struct descriptor_table { |
450 | u16 limit; | |
451 | unsigned long base; | |
452 | } __attribute__((packed)); | |
453 | ||
cbdd1bea | 454 | struct kvm_x86_ops { |
6aa8b732 AK |
455 | int (*cpu_has_kvm_support)(void); /* __init */ |
456 | int (*disabled_by_bios)(void); /* __init */ | |
457 | void (*hardware_enable)(void *dummy); /* __init */ | |
458 | void (*hardware_disable)(void *dummy); | |
002c7f7c | 459 | void (*check_processor_compatibility)(void *rtn); |
6aa8b732 AK |
460 | int (*hardware_setup)(void); /* __init */ |
461 | void (*hardware_unsetup)(void); /* __exit */ | |
462 | ||
fb3f0f51 RR |
463 | /* Create, but do not attach this VCPU */ |
464 | struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id); | |
6aa8b732 | 465 | void (*vcpu_free)(struct kvm_vcpu *vcpu); |
04d2cc77 | 466 | void (*vcpu_reset)(struct kvm_vcpu *vcpu); |
6aa8b732 | 467 | |
04d2cc77 | 468 | void (*prepare_guest_switch)(struct kvm_vcpu *vcpu); |
15ad7146 | 469 | void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); |
6aa8b732 | 470 | void (*vcpu_put)(struct kvm_vcpu *vcpu); |
774c47f1 | 471 | void (*vcpu_decache)(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
472 | |
473 | int (*set_guest_debug)(struct kvm_vcpu *vcpu, | |
474 | struct kvm_debug_guest *dbg); | |
04d2cc77 | 475 | void (*guest_debug_pre)(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
476 | int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata); |
477 | int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
478 | u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); | |
479 | void (*get_segment)(struct kvm_vcpu *vcpu, | |
480 | struct kvm_segment *var, int seg); | |
481 | void (*set_segment)(struct kvm_vcpu *vcpu, | |
482 | struct kvm_segment *var, int seg); | |
6aa8b732 | 483 | void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); |
25c4c276 | 484 | void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); |
6aa8b732 | 485 | void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); |
6aa8b732 AK |
486 | void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); |
487 | void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); | |
488 | void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); | |
489 | void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
490 | void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
491 | void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
492 | void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
493 | unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr); | |
494 | void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value, | |
495 | int *exception); | |
496 | void (*cache_regs)(struct kvm_vcpu *vcpu); | |
497 | void (*decache_regs)(struct kvm_vcpu *vcpu); | |
498 | unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); | |
499 | void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); | |
500 | ||
6aa8b732 AK |
501 | void (*tlb_flush)(struct kvm_vcpu *vcpu); |
502 | void (*inject_page_fault)(struct kvm_vcpu *vcpu, | |
503 | unsigned long addr, u32 err_code); | |
504 | ||
505 | void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code); | |
506 | ||
04d2cc77 AK |
507 | void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run); |
508 | int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu); | |
6aa8b732 | 509 | void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); |
102d8325 IM |
510 | void (*patch_hypercall)(struct kvm_vcpu *vcpu, |
511 | unsigned char *hypercall_addr); | |
2a8067f1 ED |
512 | int (*get_irq)(struct kvm_vcpu *vcpu); |
513 | void (*set_irq)(struct kvm_vcpu *vcpu, int vec); | |
04d2cc77 AK |
514 | void (*inject_pending_irq)(struct kvm_vcpu *vcpu); |
515 | void (*inject_pending_vectors)(struct kvm_vcpu *vcpu, | |
516 | struct kvm_run *run); | |
6aa8b732 AK |
517 | }; |
518 | ||
cbdd1bea | 519 | extern struct kvm_x86_ops *kvm_x86_ops; |
6aa8b732 | 520 | |
f0242478 RR |
521 | /* The guest did something we don't support. */ |
522 | #define pr_unimpl(vcpu, fmt, ...) \ | |
523 | do { \ | |
524 | if (printk_ratelimit()) \ | |
525 | printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ | |
526 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ | |
527 | } while(0) | |
528 | ||
6aa8b732 AK |
529 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
530 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
531 | ||
fb3f0f51 RR |
532 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
533 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
534 | ||
cbdd1bea | 535 | int kvm_init_x86(struct kvm_x86_ops *ops, unsigned int vcpu_size, |
c16f862d | 536 | struct module *module); |
cbdd1bea | 537 | void kvm_exit_x86(void); |
6aa8b732 | 538 | |
b5a33a75 AK |
539 | int kvm_mmu_module_init(void); |
540 | void kvm_mmu_module_exit(void); | |
541 | ||
6aa8b732 | 542 | void kvm_mmu_destroy(struct kvm_vcpu *vcpu); |
8018c27b IM |
543 | int kvm_mmu_create(struct kvm_vcpu *vcpu); |
544 | int kvm_mmu_setup(struct kvm_vcpu *vcpu); | |
c7addb90 | 545 | void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte); |
6aa8b732 AK |
546 | |
547 | int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); | |
90cb0529 AK |
548 | void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot); |
549 | void kvm_mmu_zap_all(struct kvm *kvm); | |
6aa8b732 AK |
550 | |
551 | hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa); | |
552 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) | |
553 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
554 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
555 | hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva); | |
039576c0 | 556 | struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva); |
6aa8b732 | 557 | |
6aa8b732 AK |
558 | extern hpa_t bad_page_address; |
559 | ||
290fc38d | 560 | gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn); |
954bbbc2 | 561 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
195aefde IE |
562 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
563 | int len); | |
564 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); | |
565 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, | |
566 | int offset, int len); | |
567 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
568 | unsigned long len); | |
569 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); | |
570 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 AK |
571 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
572 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); | |
573 | ||
574 | enum emulation_result { | |
575 | EMULATE_DONE, /* no further processing */ | |
576 | EMULATE_DO_MMIO, /* kvm_run filled with mmio request */ | |
577 | EMULATE_FAIL, /* can't emulate this instruction */ | |
578 | }; | |
579 | ||
580 | int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run, | |
3427318f | 581 | unsigned long cr2, u16 error_code, int no_decode); |
054b1369 | 582 | void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context); |
6aa8b732 AK |
583 | void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); |
584 | void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
585 | void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, | |
586 | unsigned long *rflags); | |
587 | ||
588 | unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); | |
589 | void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, | |
590 | unsigned long *rflags); | |
35f3f286 AK |
591 | int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data); |
592 | int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
6aa8b732 AK |
593 | |
594 | struct x86_emulate_ctxt; | |
595 | ||
3090dd73 LV |
596 | int kvm_emulate_pio (struct kvm_vcpu *vcpu, struct kvm_run *run, int in, |
597 | int size, unsigned port); | |
598 | int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, | |
599 | int size, unsigned long count, int down, | |
600 | gva_t address, int rep, unsigned port); | |
06465c5a | 601 | void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); |
d3bef15f | 602 | int kvm_emulate_halt(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
603 | int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address); |
604 | int emulate_clts(struct kvm_vcpu *vcpu); | |
605 | int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr, | |
606 | unsigned long *dest); | |
607 | int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, | |
608 | unsigned long value); | |
609 | ||
610 | void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); | |
611 | void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0); | |
612 | void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0); | |
613 | void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0); | |
7017fc3d | 614 | unsigned long get_cr8(struct kvm_vcpu *vcpu); |
6aa8b732 | 615 | void lmsw(struct kvm_vcpu *vcpu, unsigned long msw); |
1747fb71 | 616 | void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); |
6aa8b732 | 617 | |
3bab1f5d AK |
618 | int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); |
619 | int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); | |
6aa8b732 AK |
620 | |
621 | void fx_init(struct kvm_vcpu *vcpu); | |
622 | ||
6aa8b732 | 623 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
624 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
625 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
d9e368d6 | 626 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
6aa8b732 | 627 | |
e7d5d76c LV |
628 | int emulator_read_std(unsigned long addr, |
629 | void *val, | |
630 | unsigned int bytes, | |
631 | struct kvm_vcpu *vcpu); | |
632 | int emulator_write_emulated(unsigned long addr, | |
633 | const void *val, | |
634 | unsigned int bytes, | |
635 | struct kvm_vcpu *vcpu); | |
6aa8b732 AK |
636 | |
637 | unsigned long segment_base(u16 selector); | |
638 | ||
09072daf | 639 | void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, |
fe551881 | 640 | const u8 *new, int bytes); |
a436036b | 641 | int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); |
22d95b12 | 642 | void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); |
17c3ba9d AK |
643 | int kvm_mmu_load(struct kvm_vcpu *vcpu); |
644 | void kvm_mmu_unload(struct kvm_vcpu *vcpu); | |
ebeace86 | 645 | |
7aa81cc0 AL |
646 | int kvm_emulate_hypercall(struct kvm_vcpu *vcpu); |
647 | ||
648 | int kvm_fix_hypercall(struct kvm_vcpu *vcpu); | |
270fd9b9 | 649 | |
d172fcd3 LV |
650 | static inline void kvm_guest_enter(void) |
651 | { | |
652 | current->flags |= PF_VCPU; | |
653 | } | |
654 | ||
655 | static inline void kvm_guest_exit(void) | |
656 | { | |
657 | current->flags &= ~PF_VCPU; | |
658 | } | |
659 | ||
ebeace86 AK |
660 | static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, |
661 | u32 error_code) | |
662 | { | |
ebeace86 AK |
663 | return vcpu->mmu.page_fault(vcpu, gva, error_code); |
664 | } | |
da4a00f0 | 665 | |
22d95b12 AK |
666 | static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu) |
667 | { | |
668 | if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES)) | |
669 | __kvm_mmu_free_some_pages(vcpu); | |
670 | } | |
671 | ||
17c3ba9d AK |
672 | static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu) |
673 | { | |
674 | if (likely(vcpu->mmu.root_hpa != INVALID_PAGE)) | |
675 | return 0; | |
676 | ||
677 | return kvm_mmu_load(vcpu); | |
678 | } | |
679 | ||
a9058ecd AK |
680 | static inline int is_long_mode(struct kvm_vcpu *vcpu) |
681 | { | |
682 | #ifdef CONFIG_X86_64 | |
683 | return vcpu->shadow_efer & EFER_LME; | |
684 | #else | |
685 | return 0; | |
686 | #endif | |
687 | } | |
688 | ||
6aa8b732 AK |
689 | static inline int is_pae(struct kvm_vcpu *vcpu) |
690 | { | |
66aee91a | 691 | return vcpu->cr4 & X86_CR4_PAE; |
6aa8b732 AK |
692 | } |
693 | ||
694 | static inline int is_pse(struct kvm_vcpu *vcpu) | |
695 | { | |
66aee91a | 696 | return vcpu->cr4 & X86_CR4_PSE; |
6aa8b732 AK |
697 | } |
698 | ||
699 | static inline int is_paging(struct kvm_vcpu *vcpu) | |
700 | { | |
707d92fa | 701 | return vcpu->cr0 & X86_CR0_PG; |
6aa8b732 AK |
702 | } |
703 | ||
704 | static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot) | |
705 | { | |
706 | return slot - kvm->memslots; | |
707 | } | |
708 | ||
709 | static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) | |
710 | { | |
711 | struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); | |
712 | ||
5972e953 | 713 | return (struct kvm_mmu_page *)page_private(page); |
6aa8b732 AK |
714 | } |
715 | ||
716 | static inline u16 read_fs(void) | |
717 | { | |
718 | u16 seg; | |
719 | asm ("mov %%fs, %0" : "=g"(seg)); | |
720 | return seg; | |
721 | } | |
722 | ||
723 | static inline u16 read_gs(void) | |
724 | { | |
725 | u16 seg; | |
726 | asm ("mov %%gs, %0" : "=g"(seg)); | |
727 | return seg; | |
728 | } | |
729 | ||
730 | static inline u16 read_ldt(void) | |
731 | { | |
732 | u16 ldt; | |
733 | asm ("sldt %0" : "=g"(ldt)); | |
734 | return ldt; | |
735 | } | |
736 | ||
737 | static inline void load_fs(u16 sel) | |
738 | { | |
739 | asm ("mov %0, %%fs" : : "rm"(sel)); | |
740 | } | |
741 | ||
742 | static inline void load_gs(u16 sel) | |
743 | { | |
744 | asm ("mov %0, %%gs" : : "rm"(sel)); | |
745 | } | |
746 | ||
747 | #ifndef load_ldt | |
748 | static inline void load_ldt(u16 sel) | |
749 | { | |
a0610ddf | 750 | asm ("lldt %0" : : "rm"(sel)); |
6aa8b732 AK |
751 | } |
752 | #endif | |
753 | ||
754 | static inline void get_idt(struct descriptor_table *table) | |
755 | { | |
756 | asm ("sidt %0" : "=m"(*table)); | |
757 | } | |
758 | ||
759 | static inline void get_gdt(struct descriptor_table *table) | |
760 | { | |
761 | asm ("sgdt %0" : "=m"(*table)); | |
762 | } | |
763 | ||
764 | static inline unsigned long read_tr_base(void) | |
765 | { | |
766 | u16 tr; | |
767 | asm ("str %0" : "=g"(tr)); | |
768 | return segment_base(tr); | |
769 | } | |
770 | ||
05b3e0c2 | 771 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
772 | static inline unsigned long read_msr(unsigned long msr) |
773 | { | |
774 | u64 value; | |
775 | ||
776 | rdmsrl(msr, value); | |
777 | return value; | |
778 | } | |
779 | #endif | |
780 | ||
b114b080 | 781 | static inline void fx_save(struct i387_fxsave_struct *image) |
6aa8b732 AK |
782 | { |
783 | asm ("fxsave (%0)":: "r" (image)); | |
784 | } | |
785 | ||
b114b080 | 786 | static inline void fx_restore(struct i387_fxsave_struct *image) |
6aa8b732 AK |
787 | { |
788 | asm ("fxrstor (%0)":: "r" (image)); | |
789 | } | |
790 | ||
791 | static inline void fpu_init(void) | |
792 | { | |
793 | asm ("finit"); | |
794 | } | |
795 | ||
796 | static inline u32 get_rdx_init_val(void) | |
797 | { | |
798 | return 0x600; /* P6 family */ | |
799 | } | |
800 | ||
801 | #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30" | |
802 | #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2" | |
803 | #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3" | |
804 | #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30" | |
805 | #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0" | |
806 | #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0" | |
807 | #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4" | |
808 | #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4" | |
809 | #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30" | |
810 | ||
811 | #define MSR_IA32_TIME_STAMP_COUNTER 0x010 | |
812 | ||
813 | #define TSS_IOPB_BASE_OFFSET 0x66 | |
814 | #define TSS_BASE_SIZE 0x68 | |
815 | #define TSS_IOPB_SIZE (65536 / 8) | |
816 | #define TSS_REDIRECTION_SIZE (256 / 8) | |
817 | #define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) | |
818 | ||
6aa8b732 | 819 | #endif |