Commit | Line | Data |
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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 |
82ce2c96 IE |
44 | #define KVM_PERMILLE_MMU_PAGES 20 |
45 | #define KVM_MIN_ALLOC_MMU_PAGES 64 | |
7494c0cc | 46 | #define KVM_NUM_MMU_PAGES 1024 |
ebeace86 AK |
47 | #define KVM_MIN_FREE_MMU_PAGES 5 |
48 | #define KVM_REFILL_PAGES 25 | |
06465c5a | 49 | #define KVM_MAX_CPUID_ENTRIES 40 |
6aa8b732 | 50 | |
6aa8b732 | 51 | #define DE_VECTOR 0 |
7aa81cc0 | 52 | #define UD_VECTOR 6 |
7807fa6c | 53 | #define NM_VECTOR 7 |
6aa8b732 AK |
54 | #define DF_VECTOR 8 |
55 | #define TS_VECTOR 10 | |
56 | #define NP_VECTOR 11 | |
57 | #define SS_VECTOR 12 | |
58 | #define GP_VECTOR 13 | |
59 | #define PF_VECTOR 14 | |
60 | ||
61 | #define SELECTOR_TI_MASK (1 << 2) | |
62 | #define SELECTOR_RPL_MASK 0x03 | |
63 | ||
64 | #define IOPL_SHIFT 12 | |
65 | ||
039576c0 AK |
66 | #define KVM_PIO_PAGE_OFFSET 1 |
67 | ||
d9e368d6 AK |
68 | /* |
69 | * vcpu->requests bit members | |
70 | */ | |
3176bc3e | 71 | #define KVM_REQ_TLB_FLUSH 0 |
d9e368d6 | 72 | |
6aa8b732 AK |
73 | /* |
74 | * Address types: | |
75 | * | |
76 | * gva - guest virtual address | |
77 | * gpa - guest physical address | |
78 | * gfn - guest frame number | |
79 | * hva - host virtual address | |
80 | * hpa - host physical address | |
81 | * hfn - host frame number | |
82 | */ | |
83 | ||
84 | typedef unsigned long gva_t; | |
85 | typedef u64 gpa_t; | |
86 | typedef unsigned long gfn_t; | |
87 | ||
88 | typedef unsigned long hva_t; | |
89 | typedef u64 hpa_t; | |
90 | typedef unsigned long hfn_t; | |
91 | ||
cea0f0e7 AK |
92 | #define NR_PTE_CHAIN_ENTRIES 5 |
93 | ||
94 | struct kvm_pte_chain { | |
95 | u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES]; | |
96 | struct hlist_node link; | |
97 | }; | |
98 | ||
99 | /* | |
100 | * kvm_mmu_page_role, below, is defined as: | |
101 | * | |
102 | * bits 0:3 - total guest paging levels (2-4, or zero for real mode) | |
103 | * bits 4:7 - page table level for this shadow (1-4) | |
104 | * bits 8:9 - page table quadrant for 2-level guests | |
105 | * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode) | |
d55e2cb2 | 106 | * bits 17:19 - "access" - the user, writable, and nx bits of a huge page pde |
cea0f0e7 AK |
107 | */ |
108 | union kvm_mmu_page_role { | |
109 | unsigned word; | |
110 | struct { | |
111 | unsigned glevels : 4; | |
112 | unsigned level : 4; | |
113 | unsigned quadrant : 2; | |
114 | unsigned pad_for_nice_hex_output : 6; | |
115 | unsigned metaphysical : 1; | |
d55e2cb2 | 116 | unsigned hugepage_access : 3; |
cea0f0e7 AK |
117 | }; |
118 | }; | |
119 | ||
6aa8b732 AK |
120 | struct kvm_mmu_page { |
121 | struct list_head link; | |
cea0f0e7 AK |
122 | struct hlist_node hash_link; |
123 | ||
124 | /* | |
125 | * The following two entries are used to key the shadow page in the | |
126 | * hash table. | |
127 | */ | |
128 | gfn_t gfn; | |
129 | union kvm_mmu_page_role role; | |
130 | ||
47ad8e68 | 131 | u64 *spt; |
290fc38d IE |
132 | /* hold the gfn of each spte inside spt */ |
133 | gfn_t *gfns; | |
6aa8b732 AK |
134 | unsigned long slot_bitmap; /* One bit set per slot which has memory |
135 | * in this shadow page. | |
136 | */ | |
cea0f0e7 | 137 | int multimapped; /* More than one parent_pte? */ |
3bb65a22 | 138 | int root_count; /* Currently serving as active root */ |
cea0f0e7 AK |
139 | union { |
140 | u64 *parent_pte; /* !multimapped */ | |
141 | struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ | |
142 | }; | |
6aa8b732 AK |
143 | }; |
144 | ||
6aa8b732 | 145 | struct kvm_vcpu; |
c16f862d | 146 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 AK |
147 | |
148 | /* | |
149 | * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level | |
150 | * 32-bit). The kvm_mmu structure abstracts the details of the current mmu | |
151 | * mode. | |
152 | */ | |
153 | struct kvm_mmu { | |
154 | void (*new_cr3)(struct kvm_vcpu *vcpu); | |
155 | int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); | |
6aa8b732 AK |
156 | void (*free)(struct kvm_vcpu *vcpu); |
157 | gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva); | |
c7addb90 AK |
158 | void (*prefetch_page)(struct kvm_vcpu *vcpu, |
159 | struct kvm_mmu_page *page); | |
6aa8b732 AK |
160 | hpa_t root_hpa; |
161 | int root_level; | |
162 | int shadow_root_level; | |
17ac10ad AK |
163 | |
164 | u64 *pae_root; | |
6aa8b732 AK |
165 | }; |
166 | ||
290fc38d | 167 | #define KVM_NR_MEM_OBJS 40 |
714b93da AK |
168 | |
169 | struct kvm_mmu_memory_cache { | |
170 | int nobjs; | |
171 | void *objects[KVM_NR_MEM_OBJS]; | |
172 | }; | |
173 | ||
174 | /* | |
175 | * We don't want allocation failures within the mmu code, so we preallocate | |
176 | * enough memory for a single page fault in a cache. | |
177 | */ | |
6aa8b732 AK |
178 | struct kvm_guest_debug { |
179 | int enabled; | |
180 | unsigned long bp[4]; | |
181 | int singlestep; | |
182 | }; | |
183 | ||
184 | enum { | |
185 | VCPU_REGS_RAX = 0, | |
186 | VCPU_REGS_RCX = 1, | |
187 | VCPU_REGS_RDX = 2, | |
188 | VCPU_REGS_RBX = 3, | |
189 | VCPU_REGS_RSP = 4, | |
190 | VCPU_REGS_RBP = 5, | |
191 | VCPU_REGS_RSI = 6, | |
192 | VCPU_REGS_RDI = 7, | |
05b3e0c2 | 193 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
194 | VCPU_REGS_R8 = 8, |
195 | VCPU_REGS_R9 = 9, | |
196 | VCPU_REGS_R10 = 10, | |
197 | VCPU_REGS_R11 = 11, | |
198 | VCPU_REGS_R12 = 12, | |
199 | VCPU_REGS_R13 = 13, | |
200 | VCPU_REGS_R14 = 14, | |
201 | VCPU_REGS_R15 = 15, | |
202 | #endif | |
203 | NR_VCPU_REGS | |
204 | }; | |
205 | ||
206 | enum { | |
207 | VCPU_SREG_CS, | |
208 | VCPU_SREG_DS, | |
209 | VCPU_SREG_ES, | |
210 | VCPU_SREG_FS, | |
211 | VCPU_SREG_GS, | |
212 | VCPU_SREG_SS, | |
213 | VCPU_SREG_TR, | |
214 | VCPU_SREG_LDTR, | |
215 | }; | |
216 | ||
3427318f LV |
217 | #include "x86_emulate.h" |
218 | ||
039576c0 AK |
219 | struct kvm_pio_request { |
220 | unsigned long count; | |
221 | int cur_count; | |
222 | struct page *guest_pages[2]; | |
223 | unsigned guest_page_offset; | |
224 | int in; | |
74906345 | 225 | int port; |
039576c0 AK |
226 | int size; |
227 | int string; | |
228 | int down; | |
229 | int rep; | |
230 | }; | |
231 | ||
1165f5fe AK |
232 | struct kvm_stat { |
233 | u32 pf_fixed; | |
234 | u32 pf_guest; | |
235 | u32 tlb_flush; | |
236 | u32 invlpg; | |
237 | ||
238 | u32 exits; | |
239 | u32 io_exits; | |
240 | u32 mmio_exits; | |
241 | u32 signal_exits; | |
242 | u32 irq_window_exits; | |
243 | u32 halt_exits; | |
b6958ce4 | 244 | u32 halt_wakeup; |
1165f5fe AK |
245 | u32 request_irq_exits; |
246 | u32 irq_exits; | |
e6adf283 | 247 | u32 light_exits; |
2cc51560 | 248 | u32 efer_reload; |
1165f5fe AK |
249 | }; |
250 | ||
2eeb2e94 GH |
251 | struct kvm_io_device { |
252 | void (*read)(struct kvm_io_device *this, | |
253 | gpa_t addr, | |
254 | int len, | |
255 | void *val); | |
256 | void (*write)(struct kvm_io_device *this, | |
257 | gpa_t addr, | |
258 | int len, | |
259 | const void *val); | |
260 | int (*in_range)(struct kvm_io_device *this, gpa_t addr); | |
261 | void (*destructor)(struct kvm_io_device *this); | |
262 | ||
263 | void *private; | |
264 | }; | |
265 | ||
266 | static inline void kvm_iodevice_read(struct kvm_io_device *dev, | |
267 | gpa_t addr, | |
268 | int len, | |
269 | void *val) | |
270 | { | |
271 | dev->read(dev, addr, len, val); | |
272 | } | |
273 | ||
274 | static inline void kvm_iodevice_write(struct kvm_io_device *dev, | |
275 | gpa_t addr, | |
276 | int len, | |
277 | const void *val) | |
278 | { | |
279 | dev->write(dev, addr, len, val); | |
280 | } | |
281 | ||
282 | static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr) | |
283 | { | |
284 | return dev->in_range(dev, addr); | |
285 | } | |
286 | ||
287 | static inline void kvm_iodevice_destructor(struct kvm_io_device *dev) | |
288 | { | |
74906345 ED |
289 | if (dev->destructor) |
290 | dev->destructor(dev); | |
2eeb2e94 GH |
291 | } |
292 | ||
293 | /* | |
294 | * It would be nice to use something smarter than a linear search, TBD... | |
295 | * Thankfully we dont expect many devices to register (famous last words :), | |
296 | * so until then it will suffice. At least its abstracted so we can change | |
297 | * in one place. | |
298 | */ | |
299 | struct kvm_io_bus { | |
300 | int dev_count; | |
301 | #define NR_IOBUS_DEVS 6 | |
302 | struct kvm_io_device *devs[NR_IOBUS_DEVS]; | |
303 | }; | |
304 | ||
305 | void kvm_io_bus_init(struct kvm_io_bus *bus); | |
306 | void kvm_io_bus_destroy(struct kvm_io_bus *bus); | |
307 | struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr); | |
308 | void kvm_io_bus_register_dev(struct kvm_io_bus *bus, | |
309 | struct kvm_io_device *dev); | |
310 | ||
6aa8b732 AK |
311 | struct kvm_vcpu { |
312 | struct kvm *kvm; | |
15ad7146 | 313 | struct preempt_notifier preempt_notifier; |
dad3795d | 314 | int vcpu_id; |
6aa8b732 AK |
315 | struct mutex mutex; |
316 | int cpu; | |
0cc5064d | 317 | u64 host_tsc; |
9a2bb7f4 | 318 | struct kvm_run *run; |
c1150d8c | 319 | int interrupt_window_open; |
d9e368d6 AK |
320 | int guest_mode; |
321 | unsigned long requests; | |
6aa8b732 | 322 | unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */ |
9eb829ce | 323 | DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS); |
6aa8b732 AK |
324 | unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */ |
325 | unsigned long rip; /* needs vcpu_load_rsp_rip() */ | |
326 | ||
327 | unsigned long cr0; | |
328 | unsigned long cr2; | |
329 | unsigned long cr3; | |
330 | unsigned long cr4; | |
331 | unsigned long cr8; | |
1342d353 | 332 | u64 pdptrs[4]; /* pae */ |
6aa8b732 AK |
333 | u64 shadow_efer; |
334 | u64 apic_base; | |
97222cc8 | 335 | struct kvm_lapic *apic; /* kernel irqchip context */ |
c5ec1534 HQ |
336 | #define VCPU_MP_STATE_RUNNABLE 0 |
337 | #define VCPU_MP_STATE_UNINITIALIZED 1 | |
338 | #define VCPU_MP_STATE_INIT_RECEIVED 2 | |
339 | #define VCPU_MP_STATE_SIPI_RECEIVED 3 | |
340 | #define VCPU_MP_STATE_HALTED 4 | |
341 | int mp_state; | |
342 | int sipi_vector; | |
6f00e68f | 343 | u64 ia32_misc_enable_msr; |
6aa8b732 | 344 | |
6aa8b732 AK |
345 | struct kvm_mmu mmu; |
346 | ||
714b93da AK |
347 | struct kvm_mmu_memory_cache mmu_pte_chain_cache; |
348 | struct kvm_mmu_memory_cache mmu_rmap_desc_cache; | |
d3d25b04 AK |
349 | struct kvm_mmu_memory_cache mmu_page_cache; |
350 | struct kvm_mmu_memory_cache mmu_page_header_cache; | |
714b93da | 351 | |
86a5ba02 AK |
352 | gfn_t last_pt_write_gfn; |
353 | int last_pt_write_count; | |
12b7d28f | 354 | u64 *last_pte_updated; |
86a5ba02 | 355 | |
6aa8b732 AK |
356 | struct kvm_guest_debug guest_debug; |
357 | ||
b114b080 RR |
358 | struct i387_fxsave_struct host_fx_image; |
359 | struct i387_fxsave_struct guest_fx_image; | |
7807fa6c | 360 | int fpu_active; |
7702fd1f | 361 | int guest_fpu_loaded; |
6aa8b732 AK |
362 | |
363 | int mmio_needed; | |
364 | int mmio_read_completed; | |
365 | int mmio_is_write; | |
366 | int mmio_size; | |
367 | unsigned char mmio_data[8]; | |
368 | gpa_t mmio_phys_addr; | |
e7df56e4 | 369 | gva_t mmio_fault_cr2; |
039576c0 AK |
370 | struct kvm_pio_request pio; |
371 | void *pio_data; | |
b6958ce4 | 372 | wait_queue_head_t wq; |
6aa8b732 | 373 | |
1961d276 AK |
374 | int sigset_active; |
375 | sigset_t sigset; | |
376 | ||
1165f5fe AK |
377 | struct kvm_stat stat; |
378 | ||
6aa8b732 AK |
379 | struct { |
380 | int active; | |
381 | u8 save_iopl; | |
382 | struct kvm_save_segment { | |
383 | u16 selector; | |
384 | unsigned long base; | |
385 | u32 limit; | |
386 | u32 ar; | |
387 | } tr, es, ds, fs, gs; | |
388 | } rmode; | |
72d6e5a0 | 389 | int halt_request; /* real mode on Intel only */ |
06465c5a AK |
390 | |
391 | int cpuid_nent; | |
392 | struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES]; | |
3427318f LV |
393 | |
394 | /* emulate context */ | |
395 | ||
396 | struct x86_emulate_ctxt emulate_ctxt; | |
6aa8b732 AK |
397 | }; |
398 | ||
e8207547 AK |
399 | struct kvm_mem_alias { |
400 | gfn_t base_gfn; | |
401 | unsigned long npages; | |
402 | gfn_t target_gfn; | |
403 | }; | |
404 | ||
6aa8b732 AK |
405 | struct kvm_memory_slot { |
406 | gfn_t base_gfn; | |
407 | unsigned long npages; | |
408 | unsigned long flags; | |
290fc38d | 409 | unsigned long *rmap; |
6aa8b732 | 410 | unsigned long *dirty_bitmap; |
8a7ae055 | 411 | unsigned long userspace_addr; |
6aa8b732 AK |
412 | }; |
413 | ||
414 | struct kvm { | |
11ec2804 | 415 | struct mutex lock; /* protects everything except vcpus */ |
e8207547 AK |
416 | int naliases; |
417 | struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS]; | |
6aa8b732 AK |
418 | int nmemslots; |
419 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS]; | |
cea0f0e7 AK |
420 | /* |
421 | * Hash table of struct kvm_mmu_page. | |
422 | */ | |
6aa8b732 | 423 | struct list_head active_mmu_pages; |
82ce2c96 IE |
424 | unsigned int n_free_mmu_pages; |
425 | unsigned int n_requested_mmu_pages; | |
426 | unsigned int n_alloc_mmu_pages; | |
cea0f0e7 | 427 | struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; |
fb3f0f51 | 428 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
cd4a4e53 | 429 | unsigned long rmap_overflow; |
133de902 | 430 | struct list_head vm_list; |
bccf2150 | 431 | struct file *filp; |
2eeb2e94 | 432 | struct kvm_io_bus mmio_bus; |
74906345 | 433 | struct kvm_io_bus pio_bus; |
85f455f7 | 434 | struct kvm_pic *vpic; |
1fd4f2a5 | 435 | struct kvm_ioapic *vioapic; |
932f72ad | 436 | int round_robin_prev_vcpu; |
6aa8b732 AK |
437 | }; |
438 | ||
85f455f7 ED |
439 | static inline struct kvm_pic *pic_irqchip(struct kvm *kvm) |
440 | { | |
441 | return kvm->vpic; | |
442 | } | |
443 | ||
1fd4f2a5 ED |
444 | static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm) |
445 | { | |
446 | return kvm->vioapic; | |
447 | } | |
448 | ||
85f455f7 ED |
449 | static inline int irqchip_in_kernel(struct kvm *kvm) |
450 | { | |
451 | return pic_irqchip(kvm) != 0; | |
452 | } | |
453 | ||
6aa8b732 AK |
454 | struct descriptor_table { |
455 | u16 limit; | |
456 | unsigned long base; | |
457 | } __attribute__((packed)); | |
458 | ||
cbdd1bea | 459 | struct kvm_x86_ops { |
6aa8b732 AK |
460 | int (*cpu_has_kvm_support)(void); /* __init */ |
461 | int (*disabled_by_bios)(void); /* __init */ | |
462 | void (*hardware_enable)(void *dummy); /* __init */ | |
463 | void (*hardware_disable)(void *dummy); | |
002c7f7c | 464 | void (*check_processor_compatibility)(void *rtn); |
6aa8b732 AK |
465 | int (*hardware_setup)(void); /* __init */ |
466 | void (*hardware_unsetup)(void); /* __exit */ | |
467 | ||
fb3f0f51 RR |
468 | /* Create, but do not attach this VCPU */ |
469 | struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id); | |
6aa8b732 | 470 | void (*vcpu_free)(struct kvm_vcpu *vcpu); |
04d2cc77 | 471 | void (*vcpu_reset)(struct kvm_vcpu *vcpu); |
6aa8b732 | 472 | |
04d2cc77 | 473 | void (*prepare_guest_switch)(struct kvm_vcpu *vcpu); |
15ad7146 | 474 | void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); |
6aa8b732 | 475 | void (*vcpu_put)(struct kvm_vcpu *vcpu); |
774c47f1 | 476 | void (*vcpu_decache)(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
477 | |
478 | int (*set_guest_debug)(struct kvm_vcpu *vcpu, | |
479 | struct kvm_debug_guest *dbg); | |
04d2cc77 | 480 | void (*guest_debug_pre)(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
481 | int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata); |
482 | int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
483 | u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); | |
484 | void (*get_segment)(struct kvm_vcpu *vcpu, | |
485 | struct kvm_segment *var, int seg); | |
486 | void (*set_segment)(struct kvm_vcpu *vcpu, | |
487 | struct kvm_segment *var, int seg); | |
6aa8b732 | 488 | void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); |
25c4c276 | 489 | void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); |
6aa8b732 | 490 | void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); |
6aa8b732 AK |
491 | void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); |
492 | void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); | |
493 | void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); | |
494 | void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
495 | void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
496 | void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
497 | void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
498 | unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr); | |
499 | void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value, | |
500 | int *exception); | |
501 | void (*cache_regs)(struct kvm_vcpu *vcpu); | |
502 | void (*decache_regs)(struct kvm_vcpu *vcpu); | |
503 | unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); | |
504 | void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); | |
505 | ||
6aa8b732 AK |
506 | void (*tlb_flush)(struct kvm_vcpu *vcpu); |
507 | void (*inject_page_fault)(struct kvm_vcpu *vcpu, | |
508 | unsigned long addr, u32 err_code); | |
509 | ||
510 | void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code); | |
511 | ||
04d2cc77 AK |
512 | void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run); |
513 | int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu); | |
6aa8b732 | 514 | void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); |
102d8325 IM |
515 | void (*patch_hypercall)(struct kvm_vcpu *vcpu, |
516 | unsigned char *hypercall_addr); | |
2a8067f1 ED |
517 | int (*get_irq)(struct kvm_vcpu *vcpu); |
518 | void (*set_irq)(struct kvm_vcpu *vcpu, int vec); | |
04d2cc77 AK |
519 | void (*inject_pending_irq)(struct kvm_vcpu *vcpu); |
520 | void (*inject_pending_vectors)(struct kvm_vcpu *vcpu, | |
521 | struct kvm_run *run); | |
6aa8b732 AK |
522 | }; |
523 | ||
cbdd1bea | 524 | extern struct kvm_x86_ops *kvm_x86_ops; |
6aa8b732 | 525 | |
f0242478 RR |
526 | /* The guest did something we don't support. */ |
527 | #define pr_unimpl(vcpu, fmt, ...) \ | |
528 | do { \ | |
529 | if (printk_ratelimit()) \ | |
530 | printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ | |
531 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ | |
d77c26fc | 532 | } while (0) |
f0242478 | 533 | |
6aa8b732 AK |
534 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
535 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
536 | ||
fb3f0f51 RR |
537 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
538 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
539 | ||
313a3dc7 CO |
540 | void vcpu_load(struct kvm_vcpu *vcpu); |
541 | void vcpu_put(struct kvm_vcpu *vcpu); | |
542 | ||
543 | ||
cbdd1bea | 544 | int kvm_init_x86(struct kvm_x86_ops *ops, unsigned int vcpu_size, |
c16f862d | 545 | struct module *module); |
cbdd1bea | 546 | void kvm_exit_x86(void); |
6aa8b732 | 547 | |
b5a33a75 AK |
548 | int kvm_mmu_module_init(void); |
549 | void kvm_mmu_module_exit(void); | |
550 | ||
6aa8b732 | 551 | void kvm_mmu_destroy(struct kvm_vcpu *vcpu); |
8018c27b IM |
552 | int kvm_mmu_create(struct kvm_vcpu *vcpu); |
553 | int kvm_mmu_setup(struct kvm_vcpu *vcpu); | |
c7addb90 | 554 | void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte); |
6aa8b732 AK |
555 | |
556 | int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); | |
90cb0529 AK |
557 | void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot); |
558 | void kvm_mmu_zap_all(struct kvm *kvm); | |
82ce2c96 | 559 | void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages); |
6aa8b732 | 560 | |
4a4c9924 | 561 | hpa_t gpa_to_hpa(struct kvm *kvm, gpa_t gpa); |
6aa8b732 AK |
562 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) |
563 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
564 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
565 | hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva); | |
039576c0 | 566 | struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva); |
6aa8b732 | 567 | |
cea7bb21 | 568 | extern struct page *bad_page; |
6aa8b732 | 569 | |
cea7bb21 | 570 | int is_error_page(struct page *page); |
290fc38d | 571 | gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn); |
954bbbc2 | 572 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
8a7ae055 | 573 | void kvm_release_page(struct page *page); |
195aefde IE |
574 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
575 | int len); | |
576 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); | |
577 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, | |
578 | int offset, int len); | |
579 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
580 | unsigned long len); | |
581 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); | |
582 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 AK |
583 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
584 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); | |
585 | ||
586 | enum emulation_result { | |
587 | EMULATE_DONE, /* no further processing */ | |
588 | EMULATE_DO_MMIO, /* kvm_run filled with mmio request */ | |
589 | EMULATE_FAIL, /* can't emulate this instruction */ | |
590 | }; | |
591 | ||
592 | int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run, | |
3427318f | 593 | unsigned long cr2, u16 error_code, int no_decode); |
054b1369 | 594 | void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context); |
6aa8b732 AK |
595 | void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); |
596 | void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
597 | void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, | |
598 | unsigned long *rflags); | |
599 | ||
600 | unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); | |
601 | void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, | |
602 | unsigned long *rflags); | |
35f3f286 AK |
603 | int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data); |
604 | int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
6aa8b732 AK |
605 | |
606 | struct x86_emulate_ctxt; | |
607 | ||
d77c26fc | 608 | int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, |
3090dd73 LV |
609 | int size, unsigned port); |
610 | int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, | |
611 | int size, unsigned long count, int down, | |
612 | gva_t address, int rep, unsigned port); | |
06465c5a | 613 | void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); |
d3bef15f | 614 | int kvm_emulate_halt(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
615 | int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address); |
616 | int emulate_clts(struct kvm_vcpu *vcpu); | |
d77c26fc | 617 | int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr, |
6aa8b732 AK |
618 | unsigned long *dest); |
619 | int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, | |
620 | unsigned long value); | |
621 | ||
622 | void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); | |
623 | void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0); | |
624 | void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0); | |
625 | void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0); | |
7017fc3d | 626 | unsigned long get_cr8(struct kvm_vcpu *vcpu); |
6aa8b732 | 627 | void lmsw(struct kvm_vcpu *vcpu, unsigned long msw); |
1747fb71 | 628 | void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); |
6aa8b732 | 629 | |
3bab1f5d AK |
630 | int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); |
631 | int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); | |
6aa8b732 AK |
632 | |
633 | void fx_init(struct kvm_vcpu *vcpu); | |
634 | ||
6aa8b732 | 635 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
636 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
637 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
d9e368d6 | 638 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
6aa8b732 | 639 | |
e7d5d76c | 640 | int emulator_read_std(unsigned long addr, |
d77c26fc | 641 | void *val, |
e7d5d76c LV |
642 | unsigned int bytes, |
643 | struct kvm_vcpu *vcpu); | |
644 | int emulator_write_emulated(unsigned long addr, | |
645 | const void *val, | |
646 | unsigned int bytes, | |
647 | struct kvm_vcpu *vcpu); | |
6aa8b732 AK |
648 | |
649 | unsigned long segment_base(u16 selector); | |
650 | ||
09072daf | 651 | void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, |
fe551881 | 652 | const u8 *new, int bytes); |
a436036b | 653 | int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); |
22d95b12 | 654 | void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); |
17c3ba9d AK |
655 | int kvm_mmu_load(struct kvm_vcpu *vcpu); |
656 | void kvm_mmu_unload(struct kvm_vcpu *vcpu); | |
ebeace86 | 657 | |
7aa81cc0 AL |
658 | int kvm_emulate_hypercall(struct kvm_vcpu *vcpu); |
659 | ||
660 | int kvm_fix_hypercall(struct kvm_vcpu *vcpu); | |
270fd9b9 | 661 | |
043405e1 CO |
662 | long kvm_arch_dev_ioctl(struct file *filp, |
663 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
664 | long kvm_arch_vcpu_ioctl(struct file *filp, |
665 | unsigned int ioctl, unsigned long arg); | |
666 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
667 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
668 | ||
043405e1 CO |
669 | __init void kvm_arch_init(void); |
670 | ||
d172fcd3 LV |
671 | static inline void kvm_guest_enter(void) |
672 | { | |
e56a7a28 | 673 | account_system_vtime(current); |
d172fcd3 LV |
674 | current->flags |= PF_VCPU; |
675 | } | |
676 | ||
677 | static inline void kvm_guest_exit(void) | |
678 | { | |
e56a7a28 | 679 | account_system_vtime(current); |
d172fcd3 LV |
680 | current->flags &= ~PF_VCPU; |
681 | } | |
682 | ||
ebeace86 AK |
683 | static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, |
684 | u32 error_code) | |
685 | { | |
ebeace86 AK |
686 | return vcpu->mmu.page_fault(vcpu, gva, error_code); |
687 | } | |
da4a00f0 | 688 | |
22d95b12 AK |
689 | static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu) |
690 | { | |
691 | if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES)) | |
692 | __kvm_mmu_free_some_pages(vcpu); | |
693 | } | |
694 | ||
17c3ba9d AK |
695 | static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu) |
696 | { | |
697 | if (likely(vcpu->mmu.root_hpa != INVALID_PAGE)) | |
698 | return 0; | |
699 | ||
700 | return kvm_mmu_load(vcpu); | |
701 | } | |
702 | ||
a9058ecd AK |
703 | static inline int is_long_mode(struct kvm_vcpu *vcpu) |
704 | { | |
705 | #ifdef CONFIG_X86_64 | |
706 | return vcpu->shadow_efer & EFER_LME; | |
707 | #else | |
708 | return 0; | |
709 | #endif | |
710 | } | |
711 | ||
6aa8b732 AK |
712 | static inline int is_pae(struct kvm_vcpu *vcpu) |
713 | { | |
66aee91a | 714 | return vcpu->cr4 & X86_CR4_PAE; |
6aa8b732 AK |
715 | } |
716 | ||
717 | static inline int is_pse(struct kvm_vcpu *vcpu) | |
718 | { | |
66aee91a | 719 | return vcpu->cr4 & X86_CR4_PSE; |
6aa8b732 AK |
720 | } |
721 | ||
722 | static inline int is_paging(struct kvm_vcpu *vcpu) | |
723 | { | |
707d92fa | 724 | return vcpu->cr0 & X86_CR0_PG; |
6aa8b732 AK |
725 | } |
726 | ||
727 | static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot) | |
728 | { | |
729 | return slot - kvm->memslots; | |
730 | } | |
731 | ||
732 | static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) | |
733 | { | |
734 | struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); | |
735 | ||
5972e953 | 736 | return (struct kvm_mmu_page *)page_private(page); |
6aa8b732 AK |
737 | } |
738 | ||
739 | static inline u16 read_fs(void) | |
740 | { | |
741 | u16 seg; | |
d77c26fc | 742 | asm("mov %%fs, %0" : "=g"(seg)); |
6aa8b732 AK |
743 | return seg; |
744 | } | |
745 | ||
746 | static inline u16 read_gs(void) | |
747 | { | |
748 | u16 seg; | |
d77c26fc | 749 | asm("mov %%gs, %0" : "=g"(seg)); |
6aa8b732 AK |
750 | return seg; |
751 | } | |
752 | ||
753 | static inline u16 read_ldt(void) | |
754 | { | |
755 | u16 ldt; | |
d77c26fc | 756 | asm("sldt %0" : "=g"(ldt)); |
6aa8b732 AK |
757 | return ldt; |
758 | } | |
759 | ||
760 | static inline void load_fs(u16 sel) | |
761 | { | |
d77c26fc | 762 | asm("mov %0, %%fs" : : "rm"(sel)); |
6aa8b732 AK |
763 | } |
764 | ||
765 | static inline void load_gs(u16 sel) | |
766 | { | |
d77c26fc | 767 | asm("mov %0, %%gs" : : "rm"(sel)); |
6aa8b732 AK |
768 | } |
769 | ||
770 | #ifndef load_ldt | |
771 | static inline void load_ldt(u16 sel) | |
772 | { | |
d77c26fc | 773 | asm("lldt %0" : : "rm"(sel)); |
6aa8b732 AK |
774 | } |
775 | #endif | |
776 | ||
777 | static inline void get_idt(struct descriptor_table *table) | |
778 | { | |
d77c26fc | 779 | asm("sidt %0" : "=m"(*table)); |
6aa8b732 AK |
780 | } |
781 | ||
782 | static inline void get_gdt(struct descriptor_table *table) | |
783 | { | |
d77c26fc | 784 | asm("sgdt %0" : "=m"(*table)); |
6aa8b732 AK |
785 | } |
786 | ||
787 | static inline unsigned long read_tr_base(void) | |
788 | { | |
789 | u16 tr; | |
d77c26fc | 790 | asm("str %0" : "=g"(tr)); |
6aa8b732 AK |
791 | return segment_base(tr); |
792 | } | |
793 | ||
05b3e0c2 | 794 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
795 | static inline unsigned long read_msr(unsigned long msr) |
796 | { | |
797 | u64 value; | |
798 | ||
799 | rdmsrl(msr, value); | |
800 | return value; | |
801 | } | |
802 | #endif | |
803 | ||
b114b080 | 804 | static inline void fx_save(struct i387_fxsave_struct *image) |
6aa8b732 | 805 | { |
d77c26fc | 806 | asm("fxsave (%0)":: "r" (image)); |
6aa8b732 AK |
807 | } |
808 | ||
b114b080 | 809 | static inline void fx_restore(struct i387_fxsave_struct *image) |
6aa8b732 | 810 | { |
d77c26fc | 811 | asm("fxrstor (%0)":: "r" (image)); |
6aa8b732 AK |
812 | } |
813 | ||
814 | static inline void fpu_init(void) | |
815 | { | |
d77c26fc | 816 | asm("finit"); |
6aa8b732 AK |
817 | } |
818 | ||
819 | static inline u32 get_rdx_init_val(void) | |
820 | { | |
821 | return 0x600; /* P6 family */ | |
822 | } | |
823 | ||
824 | #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30" | |
825 | #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2" | |
826 | #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3" | |
827 | #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30" | |
828 | #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0" | |
829 | #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0" | |
830 | #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4" | |
831 | #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4" | |
832 | #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30" | |
833 | ||
834 | #define MSR_IA32_TIME_STAMP_COUNTER 0x010 | |
835 | ||
836 | #define TSS_IOPB_BASE_OFFSET 0x66 | |
837 | #define TSS_BASE_SIZE 0x68 | |
838 | #define TSS_IOPB_SIZE (65536 / 8) | |
839 | #define TSS_REDIRECTION_SIZE (256 / 8) | |
840 | #define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) | |
841 | ||
6aa8b732 | 842 | #endif |