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