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Commit | Line | Data |
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a656c8ef | 1 | /* |
043405e1 CO |
2 | * Kernel-based Virtual Machine driver for Linux |
3 | * | |
4 | * This header defines architecture specific interfaces, x86 version | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
7 | * the COPYING file in the top-level directory. | |
8 | * | |
9 | */ | |
10 | ||
1965aae3 PA |
11 | #ifndef _ASM_X86_KVM_HOST_H |
12 | #define _ASM_X86_KVM_HOST_H | |
043405e1 | 13 | |
34c16eec ZX |
14 | #include <linux/types.h> |
15 | #include <linux/mm.h> | |
e930bffe | 16 | #include <linux/mmu_notifier.h> |
34c16eec ZX |
17 | |
18 | #include <linux/kvm.h> | |
19 | #include <linux/kvm_para.h> | |
edf88417 | 20 | #include <linux/kvm_types.h> |
34c16eec | 21 | |
50d0a0f9 | 22 | #include <asm/pvclock-abi.h> |
e01a1b57 | 23 | #include <asm/desc.h> |
0bed3b56 | 24 | #include <asm/mtrr.h> |
e01a1b57 | 25 | |
69a9f69b AK |
26 | #define KVM_MAX_VCPUS 16 |
27 | #define KVM_MEMORY_SLOTS 32 | |
28 | /* memory slots that does not exposed to userspace */ | |
29 | #define KVM_PRIVATE_MEM_SLOTS 4 | |
30 | ||
31 | #define KVM_PIO_PAGE_OFFSET 1 | |
542472b5 | 32 | #define KVM_COALESCED_MMIO_PAGE_OFFSET 2 |
69a9f69b | 33 | |
cd6e8f87 ZX |
34 | #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1) |
35 | #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD)) | |
7d76b4d3 JP |
36 | #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \ |
37 | 0xFFFFFF0000000000ULL) | |
cd6e8f87 | 38 | |
7d76b4d3 | 39 | #define KVM_GUEST_CR0_MASK \ |
cd6e8f87 ZX |
40 | (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \ |
41 | | X86_CR0_NW | X86_CR0_CD) | |
7d76b4d3 | 42 | #define KVM_VM_CR0_ALWAYS_ON \ |
cd6e8f87 ZX |
43 | (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \ |
44 | | X86_CR0_MP) | |
7d76b4d3 | 45 | #define KVM_GUEST_CR4_MASK \ |
cd6e8f87 ZX |
46 | (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE) |
47 | #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE) | |
48 | #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE) | |
49 | ||
50 | #define INVALID_PAGE (~(hpa_t)0) | |
51 | #define UNMAPPED_GVA (~(gpa_t)0) | |
52 | ||
05da4558 MT |
53 | /* shadow tables are PAE even on non-PAE hosts */ |
54 | #define KVM_HPAGE_SHIFT 21 | |
55 | #define KVM_HPAGE_SIZE (1UL << KVM_HPAGE_SHIFT) | |
56 | #define KVM_HPAGE_MASK (~(KVM_HPAGE_SIZE - 1)) | |
57 | ||
58 | #define KVM_PAGES_PER_HPAGE (KVM_HPAGE_SIZE / PAGE_SIZE) | |
59 | ||
cd6e8f87 | 60 | #define DE_VECTOR 0 |
19bd8afd | 61 | #define DB_VECTOR 1 |
77ab6db0 JK |
62 | #define BP_VECTOR 3 |
63 | #define OF_VECTOR 4 | |
64 | #define BR_VECTOR 5 | |
cd6e8f87 ZX |
65 | #define UD_VECTOR 6 |
66 | #define NM_VECTOR 7 | |
67 | #define DF_VECTOR 8 | |
68 | #define TS_VECTOR 10 | |
69 | #define NP_VECTOR 11 | |
70 | #define SS_VECTOR 12 | |
71 | #define GP_VECTOR 13 | |
72 | #define PF_VECTOR 14 | |
77ab6db0 | 73 | #define MF_VECTOR 16 |
53371b50 | 74 | #define MC_VECTOR 18 |
cd6e8f87 ZX |
75 | |
76 | #define SELECTOR_TI_MASK (1 << 2) | |
77 | #define SELECTOR_RPL_MASK 0x03 | |
78 | ||
79 | #define IOPL_SHIFT 12 | |
80 | ||
d69fb81f ZX |
81 | #define KVM_ALIAS_SLOTS 4 |
82 | ||
d657a98e ZX |
83 | #define KVM_PERMILLE_MMU_PAGES 20 |
84 | #define KVM_MIN_ALLOC_MMU_PAGES 64 | |
1ae0a13d DE |
85 | #define KVM_MMU_HASH_SHIFT 10 |
86 | #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT) | |
d657a98e ZX |
87 | #define KVM_MIN_FREE_MMU_PAGES 5 |
88 | #define KVM_REFILL_PAGES 25 | |
89 | #define KVM_MAX_CPUID_ENTRIES 40 | |
0bed3b56 | 90 | #define KVM_NR_FIXED_MTRR_REGION 88 |
9ba075a6 | 91 | #define KVM_NR_VAR_MTRR 8 |
d657a98e | 92 | |
e9b11c17 ZX |
93 | extern spinlock_t kvm_lock; |
94 | extern struct list_head vm_list; | |
95 | ||
d657a98e ZX |
96 | struct kvm_vcpu; |
97 | struct kvm; | |
98 | ||
5fdbf976 | 99 | enum kvm_reg { |
2b3ccfa0 ZX |
100 | VCPU_REGS_RAX = 0, |
101 | VCPU_REGS_RCX = 1, | |
102 | VCPU_REGS_RDX = 2, | |
103 | VCPU_REGS_RBX = 3, | |
104 | VCPU_REGS_RSP = 4, | |
105 | VCPU_REGS_RBP = 5, | |
106 | VCPU_REGS_RSI = 6, | |
107 | VCPU_REGS_RDI = 7, | |
108 | #ifdef CONFIG_X86_64 | |
109 | VCPU_REGS_R8 = 8, | |
110 | VCPU_REGS_R9 = 9, | |
111 | VCPU_REGS_R10 = 10, | |
112 | VCPU_REGS_R11 = 11, | |
113 | VCPU_REGS_R12 = 12, | |
114 | VCPU_REGS_R13 = 13, | |
115 | VCPU_REGS_R14 = 14, | |
116 | VCPU_REGS_R15 = 15, | |
117 | #endif | |
5fdbf976 | 118 | VCPU_REGS_RIP, |
2b3ccfa0 ZX |
119 | NR_VCPU_REGS |
120 | }; | |
121 | ||
122 | enum { | |
81609e3e | 123 | VCPU_SREG_ES, |
2b3ccfa0 | 124 | VCPU_SREG_CS, |
81609e3e | 125 | VCPU_SREG_SS, |
2b3ccfa0 | 126 | VCPU_SREG_DS, |
2b3ccfa0 ZX |
127 | VCPU_SREG_FS, |
128 | VCPU_SREG_GS, | |
2b3ccfa0 ZX |
129 | VCPU_SREG_TR, |
130 | VCPU_SREG_LDTR, | |
131 | }; | |
132 | ||
edf88417 | 133 | #include <asm/kvm_x86_emulate.h> |
2b3ccfa0 | 134 | |
d657a98e ZX |
135 | #define KVM_NR_MEM_OBJS 40 |
136 | ||
69a9f69b AK |
137 | struct kvm_guest_debug { |
138 | int enabled; | |
139 | unsigned long bp[4]; | |
140 | int singlestep; | |
141 | }; | |
142 | ||
d657a98e ZX |
143 | /* |
144 | * We don't want allocation failures within the mmu code, so we preallocate | |
145 | * enough memory for a single page fault in a cache. | |
146 | */ | |
147 | struct kvm_mmu_memory_cache { | |
148 | int nobjs; | |
149 | void *objects[KVM_NR_MEM_OBJS]; | |
150 | }; | |
151 | ||
152 | #define NR_PTE_CHAIN_ENTRIES 5 | |
153 | ||
154 | struct kvm_pte_chain { | |
155 | u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES]; | |
156 | struct hlist_node link; | |
157 | }; | |
158 | ||
159 | /* | |
160 | * kvm_mmu_page_role, below, is defined as: | |
161 | * | |
162 | * bits 0:3 - total guest paging levels (2-4, or zero for real mode) | |
163 | * bits 4:7 - page table level for this shadow (1-4) | |
164 | * bits 8:9 - page table quadrant for 2-level guests | |
165 | * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode) | |
166 | * bits 17:19 - common access permissions for all ptes in this shadow page | |
167 | */ | |
168 | union kvm_mmu_page_role { | |
169 | unsigned word; | |
170 | struct { | |
7d76b4d3 JP |
171 | unsigned glevels:4; |
172 | unsigned level:4; | |
173 | unsigned quadrant:2; | |
174 | unsigned pad_for_nice_hex_output:6; | |
175 | unsigned metaphysical:1; | |
176 | unsigned access:3; | |
2e53d63a | 177 | unsigned invalid:1; |
d657a98e ZX |
178 | }; |
179 | }; | |
180 | ||
181 | struct kvm_mmu_page { | |
182 | struct list_head link; | |
183 | struct hlist_node hash_link; | |
184 | ||
185 | /* | |
186 | * The following two entries are used to key the shadow page in the | |
187 | * hash table. | |
188 | */ | |
189 | gfn_t gfn; | |
190 | union kvm_mmu_page_role role; | |
191 | ||
192 | u64 *spt; | |
193 | /* hold the gfn of each spte inside spt */ | |
194 | gfn_t *gfns; | |
195 | unsigned long slot_bitmap; /* One bit set per slot which has memory | |
196 | * in this shadow page. | |
197 | */ | |
198 | int multimapped; /* More than one parent_pte? */ | |
199 | int root_count; /* Currently serving as active root */ | |
4731d4c7 MT |
200 | bool unsync; |
201 | bool unsync_children; | |
d657a98e ZX |
202 | union { |
203 | u64 *parent_pte; /* !multimapped */ | |
204 | struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ | |
205 | }; | |
0074ff63 | 206 | DECLARE_BITMAP(unsync_child_bitmap, 512); |
d657a98e ZX |
207 | }; |
208 | ||
6ad18fba DH |
209 | struct kvm_pv_mmu_op_buffer { |
210 | void *ptr; | |
211 | unsigned len; | |
212 | unsigned processed; | |
213 | char buf[512] __aligned(sizeof(long)); | |
214 | }; | |
215 | ||
d657a98e ZX |
216 | /* |
217 | * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level | |
218 | * 32-bit). The kvm_mmu structure abstracts the details of the current mmu | |
219 | * mode. | |
220 | */ | |
221 | struct kvm_mmu { | |
222 | void (*new_cr3)(struct kvm_vcpu *vcpu); | |
223 | int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); | |
224 | void (*free)(struct kvm_vcpu *vcpu); | |
225 | gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva); | |
226 | void (*prefetch_page)(struct kvm_vcpu *vcpu, | |
227 | struct kvm_mmu_page *page); | |
e8bc217a MT |
228 | int (*sync_page)(struct kvm_vcpu *vcpu, |
229 | struct kvm_mmu_page *sp); | |
a7052897 | 230 | void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva); |
d657a98e ZX |
231 | hpa_t root_hpa; |
232 | int root_level; | |
233 | int shadow_root_level; | |
234 | ||
235 | u64 *pae_root; | |
236 | }; | |
237 | ||
ad312c7c | 238 | struct kvm_vcpu_arch { |
34c16eec ZX |
239 | u64 host_tsc; |
240 | int interrupt_window_open; | |
241 | unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */ | |
242 | DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS); | |
5fdbf976 MT |
243 | /* |
244 | * rip and regs accesses must go through | |
245 | * kvm_{register,rip}_{read,write} functions. | |
246 | */ | |
247 | unsigned long regs[NR_VCPU_REGS]; | |
248 | u32 regs_avail; | |
249 | u32 regs_dirty; | |
34c16eec ZX |
250 | |
251 | unsigned long cr0; | |
252 | unsigned long cr2; | |
253 | unsigned long cr3; | |
254 | unsigned long cr4; | |
255 | unsigned long cr8; | |
256 | u64 pdptrs[4]; /* pae */ | |
257 | u64 shadow_efer; | |
258 | u64 apic_base; | |
259 | struct kvm_lapic *apic; /* kernel irqchip context */ | |
34c16eec ZX |
260 | int mp_state; |
261 | int sipi_vector; | |
262 | u64 ia32_misc_enable_msr; | |
b209749f | 263 | bool tpr_access_reporting; |
34c16eec ZX |
264 | |
265 | struct kvm_mmu mmu; | |
6ad18fba DH |
266 | /* only needed in kvm_pv_mmu_op() path, but it's hot so |
267 | * put it here to avoid allocation */ | |
268 | struct kvm_pv_mmu_op_buffer mmu_op_buffer; | |
34c16eec ZX |
269 | |
270 | struct kvm_mmu_memory_cache mmu_pte_chain_cache; | |
271 | struct kvm_mmu_memory_cache mmu_rmap_desc_cache; | |
272 | struct kvm_mmu_memory_cache mmu_page_cache; | |
273 | struct kvm_mmu_memory_cache mmu_page_header_cache; | |
274 | ||
275 | gfn_t last_pt_write_gfn; | |
276 | int last_pt_write_count; | |
277 | u64 *last_pte_updated; | |
1b7fcd32 | 278 | gfn_t last_pte_gfn; |
34c16eec | 279 | |
d7824fff | 280 | struct { |
35149e21 AL |
281 | gfn_t gfn; /* presumed gfn during guest pte update */ |
282 | pfn_t pfn; /* pfn corresponding to that gfn */ | |
05da4558 | 283 | int largepage; |
e930bffe | 284 | unsigned long mmu_seq; |
d7824fff AK |
285 | } update_pte; |
286 | ||
34c16eec ZX |
287 | struct i387_fxsave_struct host_fx_image; |
288 | struct i387_fxsave_struct guest_fx_image; | |
289 | ||
290 | gva_t mmio_fault_cr2; | |
291 | struct kvm_pio_request pio; | |
292 | void *pio_data; | |
293 | ||
298101da AK |
294 | struct kvm_queued_exception { |
295 | bool pending; | |
296 | bool has_error_code; | |
297 | u8 nr; | |
298 | u32 error_code; | |
299 | } exception; | |
300 | ||
937a7eae AK |
301 | struct kvm_queued_interrupt { |
302 | bool pending; | |
303 | u8 nr; | |
304 | } interrupt; | |
305 | ||
34c16eec ZX |
306 | struct { |
307 | int active; | |
308 | u8 save_iopl; | |
309 | struct kvm_save_segment { | |
310 | u16 selector; | |
311 | unsigned long base; | |
312 | u32 limit; | |
313 | u32 ar; | |
314 | } tr, es, ds, fs, gs; | |
315 | } rmode; | |
316 | int halt_request; /* real mode on Intel only */ | |
317 | ||
318 | int cpuid_nent; | |
07716717 | 319 | struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES]; |
34c16eec ZX |
320 | /* emulate context */ |
321 | ||
322 | struct x86_emulate_ctxt emulate_ctxt; | |
18068523 GOC |
323 | |
324 | gpa_t time; | |
50d0a0f9 GH |
325 | struct pvclock_vcpu_time_info hv_clock; |
326 | unsigned int hv_clock_tsc_khz; | |
18068523 GOC |
327 | unsigned int time_offset; |
328 | struct page *time_page; | |
3419ffc8 SY |
329 | |
330 | bool nmi_pending; | |
668f612f | 331 | bool nmi_injected; |
33f089ca | 332 | bool nmi_window_open; |
9ba075a6 | 333 | |
0bed3b56 SY |
334 | struct mtrr_state_type mtrr_state; |
335 | u32 pat; | |
34c16eec ZX |
336 | }; |
337 | ||
d69fb81f ZX |
338 | struct kvm_mem_alias { |
339 | gfn_t base_gfn; | |
340 | unsigned long npages; | |
341 | gfn_t target_gfn; | |
342 | }; | |
343 | ||
344 | struct kvm_arch{ | |
345 | int naliases; | |
346 | struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS]; | |
f05e70ac ZX |
347 | |
348 | unsigned int n_free_mmu_pages; | |
349 | unsigned int n_requested_mmu_pages; | |
350 | unsigned int n_alloc_mmu_pages; | |
351 | struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; | |
352 | /* | |
353 | * Hash table of struct kvm_mmu_page. | |
354 | */ | |
355 | struct list_head active_mmu_pages; | |
4d5c5d0f | 356 | struct list_head assigned_dev_head; |
62c476c7 | 357 | struct dmar_domain *intel_iommu_domain; |
d7deeeb0 ZX |
358 | struct kvm_pic *vpic; |
359 | struct kvm_ioapic *vioapic; | |
7837699f | 360 | struct kvm_pit *vpit; |
564f1537 | 361 | struct hlist_head irq_ack_notifier_list; |
bfc6d222 ZX |
362 | |
363 | int round_robin_prev_vcpu; | |
364 | unsigned int tss_addr; | |
365 | struct page *apic_access_page; | |
18068523 GOC |
366 | |
367 | gpa_t wall_clock; | |
b7ebfb05 SY |
368 | |
369 | struct page *ept_identity_pagetable; | |
370 | bool ept_identity_pagetable_done; | |
5550af4d SY |
371 | |
372 | unsigned long irq_sources_bitmap; | |
373 | unsigned long irq_states[KVM_IOAPIC_NUM_PINS]; | |
d69fb81f ZX |
374 | }; |
375 | ||
0711456c ZX |
376 | struct kvm_vm_stat { |
377 | u32 mmu_shadow_zapped; | |
378 | u32 mmu_pte_write; | |
379 | u32 mmu_pte_updated; | |
380 | u32 mmu_pde_zapped; | |
381 | u32 mmu_flooded; | |
382 | u32 mmu_recycled; | |
dfc5aa00 | 383 | u32 mmu_cache_miss; |
4731d4c7 | 384 | u32 mmu_unsync; |
0711456c | 385 | u32 remote_tlb_flush; |
05da4558 | 386 | u32 lpages; |
0711456c ZX |
387 | }; |
388 | ||
77b4c255 ZX |
389 | struct kvm_vcpu_stat { |
390 | u32 pf_fixed; | |
391 | u32 pf_guest; | |
392 | u32 tlb_flush; | |
393 | u32 invlpg; | |
394 | ||
395 | u32 exits; | |
396 | u32 io_exits; | |
397 | u32 mmio_exits; | |
398 | u32 signal_exits; | |
399 | u32 irq_window_exits; | |
f08864b4 | 400 | u32 nmi_window_exits; |
77b4c255 ZX |
401 | u32 halt_exits; |
402 | u32 halt_wakeup; | |
403 | u32 request_irq_exits; | |
c4abb7c9 | 404 | u32 request_nmi_exits; |
77b4c255 ZX |
405 | u32 irq_exits; |
406 | u32 host_state_reload; | |
407 | u32 efer_reload; | |
408 | u32 fpu_reload; | |
409 | u32 insn_emulation; | |
410 | u32 insn_emulation_fail; | |
f11c3a8d | 411 | u32 hypercalls; |
fa89a817 | 412 | u32 irq_injections; |
c4abb7c9 | 413 | u32 nmi_injections; |
77b4c255 | 414 | }; |
ad312c7c | 415 | |
e01a1b57 HB |
416 | struct descriptor_table { |
417 | u16 limit; | |
418 | unsigned long base; | |
419 | } __attribute__((packed)); | |
420 | ||
ea4a5ff8 ZX |
421 | struct kvm_x86_ops { |
422 | int (*cpu_has_kvm_support)(void); /* __init */ | |
423 | int (*disabled_by_bios)(void); /* __init */ | |
424 | void (*hardware_enable)(void *dummy); /* __init */ | |
425 | void (*hardware_disable)(void *dummy); | |
426 | void (*check_processor_compatibility)(void *rtn); | |
427 | int (*hardware_setup)(void); /* __init */ | |
428 | void (*hardware_unsetup)(void); /* __exit */ | |
774ead3a | 429 | bool (*cpu_has_accelerated_tpr)(void); |
ea4a5ff8 ZX |
430 | |
431 | /* Create, but do not attach this VCPU */ | |
432 | struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id); | |
433 | void (*vcpu_free)(struct kvm_vcpu *vcpu); | |
434 | int (*vcpu_reset)(struct kvm_vcpu *vcpu); | |
435 | ||
436 | void (*prepare_guest_switch)(struct kvm_vcpu *vcpu); | |
437 | void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); | |
438 | void (*vcpu_put)(struct kvm_vcpu *vcpu); | |
ea4a5ff8 ZX |
439 | |
440 | int (*set_guest_debug)(struct kvm_vcpu *vcpu, | |
441 | struct kvm_debug_guest *dbg); | |
442 | void (*guest_debug_pre)(struct kvm_vcpu *vcpu); | |
443 | int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata); | |
444 | int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
445 | u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); | |
446 | void (*get_segment)(struct kvm_vcpu *vcpu, | |
447 | struct kvm_segment *var, int seg); | |
2e4d2653 | 448 | int (*get_cpl)(struct kvm_vcpu *vcpu); |
ea4a5ff8 ZX |
449 | void (*set_segment)(struct kvm_vcpu *vcpu, |
450 | struct kvm_segment *var, int seg); | |
451 | void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); | |
452 | void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); | |
453 | void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); | |
454 | void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); | |
455 | void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); | |
456 | void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); | |
457 | void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
458 | void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
459 | void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
460 | void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
461 | unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr); | |
462 | void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value, | |
463 | int *exception); | |
5fdbf976 | 464 | void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg); |
ea4a5ff8 ZX |
465 | unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); |
466 | void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); | |
467 | ||
468 | void (*tlb_flush)(struct kvm_vcpu *vcpu); | |
ea4a5ff8 | 469 | |
ea4a5ff8 ZX |
470 | void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run); |
471 | int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu); | |
472 | void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); | |
473 | void (*patch_hypercall)(struct kvm_vcpu *vcpu, | |
474 | unsigned char *hypercall_addr); | |
475 | int (*get_irq)(struct kvm_vcpu *vcpu); | |
476 | void (*set_irq)(struct kvm_vcpu *vcpu, int vec); | |
298101da AK |
477 | void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr, |
478 | bool has_error_code, u32 error_code); | |
479 | bool (*exception_injected)(struct kvm_vcpu *vcpu); | |
ea4a5ff8 ZX |
480 | void (*inject_pending_irq)(struct kvm_vcpu *vcpu); |
481 | void (*inject_pending_vectors)(struct kvm_vcpu *vcpu, | |
482 | struct kvm_run *run); | |
483 | ||
484 | int (*set_tss_addr)(struct kvm *kvm, unsigned int addr); | |
67253af5 | 485 | int (*get_tdp_level)(void); |
64d4d521 | 486 | int (*get_mt_mask_shift)(void); |
ea4a5ff8 ZX |
487 | }; |
488 | ||
97896d04 ZX |
489 | extern struct kvm_x86_ops *kvm_x86_ops; |
490 | ||
54f1585a ZX |
491 | int kvm_mmu_module_init(void); |
492 | void kvm_mmu_module_exit(void); | |
493 | ||
494 | void kvm_mmu_destroy(struct kvm_vcpu *vcpu); | |
495 | int kvm_mmu_create(struct kvm_vcpu *vcpu); | |
496 | int kvm_mmu_setup(struct kvm_vcpu *vcpu); | |
497 | void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte); | |
7b52345e SY |
498 | void kvm_mmu_set_base_ptes(u64 base_pte); |
499 | void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask, | |
64d4d521 | 500 | u64 dirty_mask, u64 nx_mask, u64 x_mask, u64 mt_mask); |
54f1585a ZX |
501 | |
502 | int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); | |
503 | void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot); | |
504 | void kvm_mmu_zap_all(struct kvm *kvm); | |
3ad82a7e | 505 | unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm); |
54f1585a ZX |
506 | void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages); |
507 | ||
cc4b6871 JR |
508 | int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3); |
509 | ||
3200f405 | 510 | int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa, |
9f811285 | 511 | const void *val, int bytes); |
2f333bcb MT |
512 | int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes, |
513 | gpa_t addr, unsigned long *ret); | |
514 | ||
515 | extern bool tdp_enabled; | |
9f811285 | 516 | |
54f1585a ZX |
517 | enum emulation_result { |
518 | EMULATE_DONE, /* no further processing */ | |
519 | EMULATE_DO_MMIO, /* kvm_run filled with mmio request */ | |
520 | EMULATE_FAIL, /* can't emulate this instruction */ | |
521 | }; | |
522 | ||
571008da SY |
523 | #define EMULTYPE_NO_DECODE (1 << 0) |
524 | #define EMULTYPE_TRAP_UD (1 << 1) | |
54f1585a | 525 | int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run, |
571008da | 526 | unsigned long cr2, u16 error_code, int emulation_type); |
54f1585a ZX |
527 | void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context); |
528 | void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
529 | void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
530 | void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, | |
531 | unsigned long *rflags); | |
532 | ||
533 | unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); | |
534 | void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, | |
535 | unsigned long *rflags); | |
f2b4b7dd | 536 | void kvm_enable_efer_bits(u64); |
54f1585a ZX |
537 | int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data); |
538 | int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
539 | ||
540 | struct x86_emulate_ctxt; | |
541 | ||
542 | int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, | |
543 | int size, unsigned port); | |
544 | int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, | |
545 | int size, unsigned long count, int down, | |
546 | gva_t address, int rep, unsigned port); | |
547 | void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); | |
548 | int kvm_emulate_halt(struct kvm_vcpu *vcpu); | |
549 | int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address); | |
550 | int emulate_clts(struct kvm_vcpu *vcpu); | |
551 | int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr, | |
552 | unsigned long *dest); | |
553 | int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, | |
554 | unsigned long value); | |
555 | ||
3e6e0aab GT |
556 | void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); |
557 | int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, | |
558 | int type_bits, int seg); | |
559 | ||
37817f29 IE |
560 | int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason); |
561 | ||
2d3ad1f4 | 562 | void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); |
9c20456a JR |
563 | void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3); |
564 | void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); | |
565 | void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8); | |
2d3ad1f4 AK |
566 | unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu); |
567 | void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw); | |
54f1585a ZX |
568 | void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); |
569 | ||
570 | int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); | |
571 | int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); | |
572 | ||
298101da AK |
573 | void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr); |
574 | void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); | |
c3c91fee AK |
575 | void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2, |
576 | u32 error_code); | |
298101da | 577 | |
3de42dc0 XZ |
578 | void kvm_pic_set_irq(void *opaque, int irq, int level); |
579 | ||
3419ffc8 SY |
580 | void kvm_inject_nmi(struct kvm_vcpu *vcpu); |
581 | ||
54f1585a ZX |
582 | void fx_init(struct kvm_vcpu *vcpu); |
583 | ||
584 | int emulator_read_std(unsigned long addr, | |
585 | void *val, | |
586 | unsigned int bytes, | |
587 | struct kvm_vcpu *vcpu); | |
588 | int emulator_write_emulated(unsigned long addr, | |
589 | const void *val, | |
590 | unsigned int bytes, | |
591 | struct kvm_vcpu *vcpu); | |
592 | ||
593 | unsigned long segment_base(u16 selector); | |
594 | ||
d835dfec | 595 | void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu); |
54f1585a ZX |
596 | void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, |
597 | const u8 *new, int bytes); | |
598 | int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); | |
599 | void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); | |
600 | int kvm_mmu_load(struct kvm_vcpu *vcpu); | |
601 | void kvm_mmu_unload(struct kvm_vcpu *vcpu); | |
0ba73cda | 602 | void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu); |
54f1585a ZX |
603 | |
604 | int kvm_emulate_hypercall(struct kvm_vcpu *vcpu); | |
605 | ||
606 | int kvm_fix_hypercall(struct kvm_vcpu *vcpu); | |
607 | ||
3067714c | 608 | int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code); |
a7052897 | 609 | void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva); |
34c16eec | 610 | |
18552672 | 611 | void kvm_enable_tdp(void); |
5f4cb662 | 612 | void kvm_disable_tdp(void); |
18552672 | 613 | |
a03490ed | 614 | int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3); |
de7d789a | 615 | int complete_pio(struct kvm_vcpu *vcpu); |
ec6d273d ZX |
616 | |
617 | static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) | |
618 | { | |
619 | struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); | |
620 | ||
621 | return (struct kvm_mmu_page *)page_private(page); | |
622 | } | |
623 | ||
d6e88aec | 624 | static inline u16 kvm_read_fs(void) |
ec6d273d ZX |
625 | { |
626 | u16 seg; | |
627 | asm("mov %%fs, %0" : "=g"(seg)); | |
628 | return seg; | |
629 | } | |
630 | ||
d6e88aec | 631 | static inline u16 kvm_read_gs(void) |
ec6d273d ZX |
632 | { |
633 | u16 seg; | |
634 | asm("mov %%gs, %0" : "=g"(seg)); | |
635 | return seg; | |
636 | } | |
637 | ||
d6e88aec | 638 | static inline u16 kvm_read_ldt(void) |
ec6d273d ZX |
639 | { |
640 | u16 ldt; | |
641 | asm("sldt %0" : "=g"(ldt)); | |
642 | return ldt; | |
643 | } | |
644 | ||
d6e88aec | 645 | static inline void kvm_load_fs(u16 sel) |
ec6d273d ZX |
646 | { |
647 | asm("mov %0, %%fs" : : "rm"(sel)); | |
648 | } | |
649 | ||
d6e88aec | 650 | static inline void kvm_load_gs(u16 sel) |
ec6d273d ZX |
651 | { |
652 | asm("mov %0, %%gs" : : "rm"(sel)); | |
653 | } | |
654 | ||
d6e88aec | 655 | static inline void kvm_load_ldt(u16 sel) |
ec6d273d ZX |
656 | { |
657 | asm("lldt %0" : : "rm"(sel)); | |
658 | } | |
ec6d273d | 659 | |
d6e88aec | 660 | static inline void kvm_get_idt(struct descriptor_table *table) |
ec6d273d ZX |
661 | { |
662 | asm("sidt %0" : "=m"(*table)); | |
663 | } | |
664 | ||
d6e88aec | 665 | static inline void kvm_get_gdt(struct descriptor_table *table) |
ec6d273d ZX |
666 | { |
667 | asm("sgdt %0" : "=m"(*table)); | |
668 | } | |
669 | ||
d6e88aec | 670 | static inline unsigned long kvm_read_tr_base(void) |
ec6d273d ZX |
671 | { |
672 | u16 tr; | |
673 | asm("str %0" : "=g"(tr)); | |
674 | return segment_base(tr); | |
675 | } | |
676 | ||
677 | #ifdef CONFIG_X86_64 | |
678 | static inline unsigned long read_msr(unsigned long msr) | |
679 | { | |
680 | u64 value; | |
681 | ||
682 | rdmsrl(msr, value); | |
683 | return value; | |
684 | } | |
685 | #endif | |
686 | ||
d6e88aec | 687 | static inline void kvm_fx_save(struct i387_fxsave_struct *image) |
ec6d273d ZX |
688 | { |
689 | asm("fxsave (%0)":: "r" (image)); | |
690 | } | |
691 | ||
d6e88aec | 692 | static inline void kvm_fx_restore(struct i387_fxsave_struct *image) |
ec6d273d ZX |
693 | { |
694 | asm("fxrstor (%0)":: "r" (image)); | |
695 | } | |
696 | ||
d6e88aec | 697 | static inline void kvm_fx_finit(void) |
ec6d273d ZX |
698 | { |
699 | asm("finit"); | |
700 | } | |
701 | ||
702 | static inline u32 get_rdx_init_val(void) | |
703 | { | |
704 | return 0x600; /* P6 family */ | |
705 | } | |
706 | ||
c1a5d4f9 AK |
707 | static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code) |
708 | { | |
709 | kvm_queue_exception_e(vcpu, GP_VECTOR, error_code); | |
710 | } | |
711 | ||
ec6d273d ZX |
712 | #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30" |
713 | #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2" | |
714 | #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3" | |
715 | #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30" | |
716 | #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0" | |
717 | #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0" | |
718 | #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4" | |
719 | #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4" | |
720 | #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30" | |
1439442c | 721 | #define ASM_VMX_INVEPT ".byte 0x66, 0x0f, 0x38, 0x80, 0x08" |
2384d2b3 | 722 | #define ASM_VMX_INVVPID ".byte 0x66, 0x0f, 0x38, 0x81, 0x08" |
ec6d273d ZX |
723 | |
724 | #define MSR_IA32_TIME_STAMP_COUNTER 0x010 | |
725 | ||
726 | #define TSS_IOPB_BASE_OFFSET 0x66 | |
727 | #define TSS_BASE_SIZE 0x68 | |
728 | #define TSS_IOPB_SIZE (65536 / 8) | |
729 | #define TSS_REDIRECTION_SIZE (256 / 8) | |
7d76b4d3 JP |
730 | #define RMODE_TSS_SIZE \ |
731 | (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) | |
53e0aa7b | 732 | |
37817f29 IE |
733 | enum { |
734 | TASK_SWITCH_CALL = 0, | |
735 | TASK_SWITCH_IRET = 1, | |
736 | TASK_SWITCH_JMP = 2, | |
737 | TASK_SWITCH_GATE = 3, | |
738 | }; | |
739 | ||
4ecac3fd AK |
740 | /* |
741 | * Hardware virtualization extension instructions may fault if a | |
742 | * reboot turns off virtualization while processes are running. | |
743 | * Trap the fault and ignore the instruction if that happens. | |
744 | */ | |
745 | asmlinkage void kvm_handle_fault_on_reboot(void); | |
746 | ||
747 | #define __kvm_handle_fault_on_reboot(insn) \ | |
748 | "666: " insn "\n\t" \ | |
18b13e54 | 749 | ".pushsection .fixup, \"ax\" \n" \ |
4ecac3fd | 750 | "667: \n\t" \ |
8ceed347 | 751 | __ASM_SIZE(push) " $666b \n\t" \ |
4ecac3fd AK |
752 | "jmp kvm_handle_fault_on_reboot \n\t" \ |
753 | ".popsection \n\t" \ | |
754 | ".pushsection __ex_table, \"a\" \n\t" \ | |
8ceed347 | 755 | _ASM_PTR " 666b, 667b \n\t" \ |
4ecac3fd AK |
756 | ".popsection" |
757 | ||
e930bffe AA |
758 | #define KVM_ARCH_WANT_MMU_NOTIFIER |
759 | int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); | |
760 | int kvm_age_hva(struct kvm *kvm, unsigned long hva); | |
761 | ||
1965aae3 | 762 | #endif /* _ASM_X86_KVM_HOST_H */ |