Commit | Line | Data |
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043405e1 CO |
1 | #/* |
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 | ||
edf88417 AK |
11 | #ifndef ASM_KVM_HOST_H |
12 | #define ASM_KVM_HOST_H | |
043405e1 | 13 | |
34c16eec ZX |
14 | #include <linux/types.h> |
15 | #include <linux/mm.h> | |
16 | ||
17 | #include <linux/kvm.h> | |
18 | #include <linux/kvm_para.h> | |
edf88417 | 19 | #include <linux/kvm_types.h> |
34c16eec | 20 | |
50d0a0f9 | 21 | #include <asm/pvclock-abi.h> |
e01a1b57 HB |
22 | #include <asm/desc.h> |
23 | ||
69a9f69b AK |
24 | #define KVM_MAX_VCPUS 16 |
25 | #define KVM_MEMORY_SLOTS 32 | |
26 | /* memory slots that does not exposed to userspace */ | |
27 | #define KVM_PRIVATE_MEM_SLOTS 4 | |
28 | ||
29 | #define KVM_PIO_PAGE_OFFSET 1 | |
30 | ||
cd6e8f87 ZX |
31 | #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1) |
32 | #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD)) | |
7d76b4d3 JP |
33 | #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \ |
34 | 0xFFFFFF0000000000ULL) | |
cd6e8f87 | 35 | |
7d76b4d3 | 36 | #define KVM_GUEST_CR0_MASK \ |
cd6e8f87 ZX |
37 | (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \ |
38 | | X86_CR0_NW | X86_CR0_CD) | |
7d76b4d3 | 39 | #define KVM_VM_CR0_ALWAYS_ON \ |
cd6e8f87 ZX |
40 | (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \ |
41 | | X86_CR0_MP) | |
7d76b4d3 | 42 | #define KVM_GUEST_CR4_MASK \ |
cd6e8f87 ZX |
43 | (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE) |
44 | #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE) | |
45 | #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE) | |
46 | ||
47 | #define INVALID_PAGE (~(hpa_t)0) | |
48 | #define UNMAPPED_GVA (~(gpa_t)0) | |
49 | ||
05da4558 MT |
50 | /* shadow tables are PAE even on non-PAE hosts */ |
51 | #define KVM_HPAGE_SHIFT 21 | |
52 | #define KVM_HPAGE_SIZE (1UL << KVM_HPAGE_SHIFT) | |
53 | #define KVM_HPAGE_MASK (~(KVM_HPAGE_SIZE - 1)) | |
54 | ||
55 | #define KVM_PAGES_PER_HPAGE (KVM_HPAGE_SIZE / PAGE_SIZE) | |
56 | ||
cd6e8f87 ZX |
57 | #define DE_VECTOR 0 |
58 | #define UD_VECTOR 6 | |
59 | #define NM_VECTOR 7 | |
60 | #define DF_VECTOR 8 | |
61 | #define TS_VECTOR 10 | |
62 | #define NP_VECTOR 11 | |
63 | #define SS_VECTOR 12 | |
64 | #define GP_VECTOR 13 | |
65 | #define PF_VECTOR 14 | |
53371b50 | 66 | #define MC_VECTOR 18 |
cd6e8f87 ZX |
67 | |
68 | #define SELECTOR_TI_MASK (1 << 2) | |
69 | #define SELECTOR_RPL_MASK 0x03 | |
70 | ||
71 | #define IOPL_SHIFT 12 | |
72 | ||
d69fb81f ZX |
73 | #define KVM_ALIAS_SLOTS 4 |
74 | ||
d657a98e ZX |
75 | #define KVM_PERMILLE_MMU_PAGES 20 |
76 | #define KVM_MIN_ALLOC_MMU_PAGES 64 | |
1ae0a13d DE |
77 | #define KVM_MMU_HASH_SHIFT 10 |
78 | #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT) | |
d657a98e ZX |
79 | #define KVM_MIN_FREE_MMU_PAGES 5 |
80 | #define KVM_REFILL_PAGES 25 | |
81 | #define KVM_MAX_CPUID_ENTRIES 40 | |
82 | ||
e9b11c17 ZX |
83 | extern spinlock_t kvm_lock; |
84 | extern struct list_head vm_list; | |
85 | ||
d657a98e ZX |
86 | struct kvm_vcpu; |
87 | struct kvm; | |
88 | ||
2b3ccfa0 ZX |
89 | enum { |
90 | VCPU_REGS_RAX = 0, | |
91 | VCPU_REGS_RCX = 1, | |
92 | VCPU_REGS_RDX = 2, | |
93 | VCPU_REGS_RBX = 3, | |
94 | VCPU_REGS_RSP = 4, | |
95 | VCPU_REGS_RBP = 5, | |
96 | VCPU_REGS_RSI = 6, | |
97 | VCPU_REGS_RDI = 7, | |
98 | #ifdef CONFIG_X86_64 | |
99 | VCPU_REGS_R8 = 8, | |
100 | VCPU_REGS_R9 = 9, | |
101 | VCPU_REGS_R10 = 10, | |
102 | VCPU_REGS_R11 = 11, | |
103 | VCPU_REGS_R12 = 12, | |
104 | VCPU_REGS_R13 = 13, | |
105 | VCPU_REGS_R14 = 14, | |
106 | VCPU_REGS_R15 = 15, | |
107 | #endif | |
108 | NR_VCPU_REGS | |
109 | }; | |
110 | ||
111 | enum { | |
112 | VCPU_SREG_CS, | |
113 | VCPU_SREG_DS, | |
114 | VCPU_SREG_ES, | |
115 | VCPU_SREG_FS, | |
116 | VCPU_SREG_GS, | |
117 | VCPU_SREG_SS, | |
118 | VCPU_SREG_TR, | |
119 | VCPU_SREG_LDTR, | |
120 | }; | |
121 | ||
edf88417 | 122 | #include <asm/kvm_x86_emulate.h> |
2b3ccfa0 | 123 | |
d657a98e ZX |
124 | #define KVM_NR_MEM_OBJS 40 |
125 | ||
69a9f69b AK |
126 | struct kvm_guest_debug { |
127 | int enabled; | |
128 | unsigned long bp[4]; | |
129 | int singlestep; | |
130 | }; | |
131 | ||
d657a98e ZX |
132 | /* |
133 | * We don't want allocation failures within the mmu code, so we preallocate | |
134 | * enough memory for a single page fault in a cache. | |
135 | */ | |
136 | struct kvm_mmu_memory_cache { | |
137 | int nobjs; | |
138 | void *objects[KVM_NR_MEM_OBJS]; | |
139 | }; | |
140 | ||
141 | #define NR_PTE_CHAIN_ENTRIES 5 | |
142 | ||
143 | struct kvm_pte_chain { | |
144 | u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES]; | |
145 | struct hlist_node link; | |
146 | }; | |
147 | ||
148 | /* | |
149 | * kvm_mmu_page_role, below, is defined as: | |
150 | * | |
151 | * bits 0:3 - total guest paging levels (2-4, or zero for real mode) | |
152 | * bits 4:7 - page table level for this shadow (1-4) | |
153 | * bits 8:9 - page table quadrant for 2-level guests | |
154 | * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode) | |
155 | * bits 17:19 - common access permissions for all ptes in this shadow page | |
156 | */ | |
157 | union kvm_mmu_page_role { | |
158 | unsigned word; | |
159 | struct { | |
7d76b4d3 JP |
160 | unsigned glevels:4; |
161 | unsigned level:4; | |
162 | unsigned quadrant:2; | |
163 | unsigned pad_for_nice_hex_output:6; | |
164 | unsigned metaphysical:1; | |
165 | unsigned access:3; | |
2e53d63a | 166 | unsigned invalid:1; |
d657a98e ZX |
167 | }; |
168 | }; | |
169 | ||
170 | struct kvm_mmu_page { | |
171 | struct list_head link; | |
172 | struct hlist_node hash_link; | |
173 | ||
174 | /* | |
175 | * The following two entries are used to key the shadow page in the | |
176 | * hash table. | |
177 | */ | |
178 | gfn_t gfn; | |
179 | union kvm_mmu_page_role role; | |
180 | ||
181 | u64 *spt; | |
182 | /* hold the gfn of each spte inside spt */ | |
183 | gfn_t *gfns; | |
184 | unsigned long slot_bitmap; /* One bit set per slot which has memory | |
185 | * in this shadow page. | |
186 | */ | |
187 | int multimapped; /* More than one parent_pte? */ | |
188 | int root_count; /* Currently serving as active root */ | |
189 | union { | |
190 | u64 *parent_pte; /* !multimapped */ | |
191 | struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ | |
192 | }; | |
193 | }; | |
194 | ||
195 | /* | |
196 | * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level | |
197 | * 32-bit). The kvm_mmu structure abstracts the details of the current mmu | |
198 | * mode. | |
199 | */ | |
200 | struct kvm_mmu { | |
201 | void (*new_cr3)(struct kvm_vcpu *vcpu); | |
202 | int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); | |
203 | void (*free)(struct kvm_vcpu *vcpu); | |
204 | gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva); | |
205 | void (*prefetch_page)(struct kvm_vcpu *vcpu, | |
206 | struct kvm_mmu_page *page); | |
207 | hpa_t root_hpa; | |
208 | int root_level; | |
209 | int shadow_root_level; | |
210 | ||
211 | u64 *pae_root; | |
212 | }; | |
213 | ||
ad312c7c | 214 | struct kvm_vcpu_arch { |
34c16eec ZX |
215 | u64 host_tsc; |
216 | int interrupt_window_open; | |
217 | unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */ | |
218 | DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS); | |
219 | unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */ | |
220 | unsigned long rip; /* needs vcpu_load_rsp_rip() */ | |
221 | ||
222 | unsigned long cr0; | |
223 | unsigned long cr2; | |
224 | unsigned long cr3; | |
225 | unsigned long cr4; | |
226 | unsigned long cr8; | |
227 | u64 pdptrs[4]; /* pae */ | |
228 | u64 shadow_efer; | |
229 | u64 apic_base; | |
230 | struct kvm_lapic *apic; /* kernel irqchip context */ | |
34c16eec ZX |
231 | int mp_state; |
232 | int sipi_vector; | |
233 | u64 ia32_misc_enable_msr; | |
b209749f | 234 | bool tpr_access_reporting; |
34c16eec ZX |
235 | |
236 | struct kvm_mmu mmu; | |
237 | ||
238 | struct kvm_mmu_memory_cache mmu_pte_chain_cache; | |
239 | struct kvm_mmu_memory_cache mmu_rmap_desc_cache; | |
240 | struct kvm_mmu_memory_cache mmu_page_cache; | |
241 | struct kvm_mmu_memory_cache mmu_page_header_cache; | |
242 | ||
243 | gfn_t last_pt_write_gfn; | |
244 | int last_pt_write_count; | |
245 | u64 *last_pte_updated; | |
1b7fcd32 | 246 | gfn_t last_pte_gfn; |
34c16eec | 247 | |
d7824fff | 248 | struct { |
35149e21 AL |
249 | gfn_t gfn; /* presumed gfn during guest pte update */ |
250 | pfn_t pfn; /* pfn corresponding to that gfn */ | |
05da4558 | 251 | int largepage; |
d7824fff AK |
252 | } update_pte; |
253 | ||
34c16eec ZX |
254 | struct i387_fxsave_struct host_fx_image; |
255 | struct i387_fxsave_struct guest_fx_image; | |
256 | ||
257 | gva_t mmio_fault_cr2; | |
258 | struct kvm_pio_request pio; | |
259 | void *pio_data; | |
260 | ||
298101da AK |
261 | struct kvm_queued_exception { |
262 | bool pending; | |
263 | bool has_error_code; | |
264 | u8 nr; | |
265 | u32 error_code; | |
266 | } exception; | |
267 | ||
34c16eec ZX |
268 | struct { |
269 | int active; | |
270 | u8 save_iopl; | |
271 | struct kvm_save_segment { | |
272 | u16 selector; | |
273 | unsigned long base; | |
274 | u32 limit; | |
275 | u32 ar; | |
276 | } tr, es, ds, fs, gs; | |
277 | } rmode; | |
278 | int halt_request; /* real mode on Intel only */ | |
279 | ||
280 | int cpuid_nent; | |
07716717 | 281 | struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES]; |
34c16eec ZX |
282 | /* emulate context */ |
283 | ||
284 | struct x86_emulate_ctxt emulate_ctxt; | |
18068523 GOC |
285 | |
286 | gpa_t time; | |
50d0a0f9 GH |
287 | struct pvclock_vcpu_time_info hv_clock; |
288 | unsigned int hv_clock_tsc_khz; | |
18068523 GOC |
289 | unsigned int time_offset; |
290 | struct page *time_page; | |
3419ffc8 SY |
291 | |
292 | bool nmi_pending; | |
34c16eec ZX |
293 | }; |
294 | ||
d69fb81f ZX |
295 | struct kvm_mem_alias { |
296 | gfn_t base_gfn; | |
297 | unsigned long npages; | |
298 | gfn_t target_gfn; | |
299 | }; | |
300 | ||
301 | struct kvm_arch{ | |
302 | int naliases; | |
303 | struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS]; | |
f05e70ac ZX |
304 | |
305 | unsigned int n_free_mmu_pages; | |
306 | unsigned int n_requested_mmu_pages; | |
307 | unsigned int n_alloc_mmu_pages; | |
308 | struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; | |
309 | /* | |
310 | * Hash table of struct kvm_mmu_page. | |
311 | */ | |
312 | struct list_head active_mmu_pages; | |
d7deeeb0 ZX |
313 | struct kvm_pic *vpic; |
314 | struct kvm_ioapic *vioapic; | |
7837699f | 315 | struct kvm_pit *vpit; |
bfc6d222 ZX |
316 | |
317 | int round_robin_prev_vcpu; | |
318 | unsigned int tss_addr; | |
319 | struct page *apic_access_page; | |
18068523 GOC |
320 | |
321 | gpa_t wall_clock; | |
b7ebfb05 SY |
322 | |
323 | struct page *ept_identity_pagetable; | |
324 | bool ept_identity_pagetable_done; | |
d69fb81f ZX |
325 | }; |
326 | ||
0711456c ZX |
327 | struct kvm_vm_stat { |
328 | u32 mmu_shadow_zapped; | |
329 | u32 mmu_pte_write; | |
330 | u32 mmu_pte_updated; | |
331 | u32 mmu_pde_zapped; | |
332 | u32 mmu_flooded; | |
333 | u32 mmu_recycled; | |
dfc5aa00 | 334 | u32 mmu_cache_miss; |
0711456c | 335 | u32 remote_tlb_flush; |
05da4558 | 336 | u32 lpages; |
0711456c ZX |
337 | }; |
338 | ||
77b4c255 ZX |
339 | struct kvm_vcpu_stat { |
340 | u32 pf_fixed; | |
341 | u32 pf_guest; | |
342 | u32 tlb_flush; | |
343 | u32 invlpg; | |
344 | ||
345 | u32 exits; | |
346 | u32 io_exits; | |
347 | u32 mmio_exits; | |
348 | u32 signal_exits; | |
349 | u32 irq_window_exits; | |
f08864b4 | 350 | u32 nmi_window_exits; |
77b4c255 ZX |
351 | u32 halt_exits; |
352 | u32 halt_wakeup; | |
353 | u32 request_irq_exits; | |
354 | u32 irq_exits; | |
355 | u32 host_state_reload; | |
356 | u32 efer_reload; | |
357 | u32 fpu_reload; | |
358 | u32 insn_emulation; | |
359 | u32 insn_emulation_fail; | |
f11c3a8d | 360 | u32 hypercalls; |
77b4c255 | 361 | }; |
ad312c7c | 362 | |
e01a1b57 HB |
363 | struct descriptor_table { |
364 | u16 limit; | |
365 | unsigned long base; | |
366 | } __attribute__((packed)); | |
367 | ||
ea4a5ff8 ZX |
368 | struct kvm_x86_ops { |
369 | int (*cpu_has_kvm_support)(void); /* __init */ | |
370 | int (*disabled_by_bios)(void); /* __init */ | |
371 | void (*hardware_enable)(void *dummy); /* __init */ | |
372 | void (*hardware_disable)(void *dummy); | |
373 | void (*check_processor_compatibility)(void *rtn); | |
374 | int (*hardware_setup)(void); /* __init */ | |
375 | void (*hardware_unsetup)(void); /* __exit */ | |
774ead3a | 376 | bool (*cpu_has_accelerated_tpr)(void); |
ea4a5ff8 ZX |
377 | |
378 | /* Create, but do not attach this VCPU */ | |
379 | struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id); | |
380 | void (*vcpu_free)(struct kvm_vcpu *vcpu); | |
381 | int (*vcpu_reset)(struct kvm_vcpu *vcpu); | |
382 | ||
383 | void (*prepare_guest_switch)(struct kvm_vcpu *vcpu); | |
384 | void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); | |
385 | void (*vcpu_put)(struct kvm_vcpu *vcpu); | |
ea4a5ff8 ZX |
386 | |
387 | int (*set_guest_debug)(struct kvm_vcpu *vcpu, | |
388 | struct kvm_debug_guest *dbg); | |
389 | void (*guest_debug_pre)(struct kvm_vcpu *vcpu); | |
390 | int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata); | |
391 | int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
392 | u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); | |
393 | void (*get_segment)(struct kvm_vcpu *vcpu, | |
394 | struct kvm_segment *var, int seg); | |
2e4d2653 | 395 | int (*get_cpl)(struct kvm_vcpu *vcpu); |
ea4a5ff8 ZX |
396 | void (*set_segment)(struct kvm_vcpu *vcpu, |
397 | struct kvm_segment *var, int seg); | |
398 | void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); | |
399 | void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); | |
400 | void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); | |
401 | void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); | |
402 | void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); | |
403 | void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); | |
404 | void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
405 | void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
406 | void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
407 | void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
408 | unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr); | |
409 | void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value, | |
410 | int *exception); | |
411 | void (*cache_regs)(struct kvm_vcpu *vcpu); | |
412 | void (*decache_regs)(struct kvm_vcpu *vcpu); | |
413 | unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); | |
414 | void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); | |
415 | ||
416 | void (*tlb_flush)(struct kvm_vcpu *vcpu); | |
ea4a5ff8 | 417 | |
ea4a5ff8 ZX |
418 | void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run); |
419 | int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu); | |
420 | void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); | |
421 | void (*patch_hypercall)(struct kvm_vcpu *vcpu, | |
422 | unsigned char *hypercall_addr); | |
423 | int (*get_irq)(struct kvm_vcpu *vcpu); | |
424 | void (*set_irq)(struct kvm_vcpu *vcpu, int vec); | |
298101da AK |
425 | void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr, |
426 | bool has_error_code, u32 error_code); | |
427 | bool (*exception_injected)(struct kvm_vcpu *vcpu); | |
ea4a5ff8 ZX |
428 | void (*inject_pending_irq)(struct kvm_vcpu *vcpu); |
429 | void (*inject_pending_vectors)(struct kvm_vcpu *vcpu, | |
430 | struct kvm_run *run); | |
431 | ||
432 | int (*set_tss_addr)(struct kvm *kvm, unsigned int addr); | |
67253af5 | 433 | int (*get_tdp_level)(void); |
ea4a5ff8 ZX |
434 | }; |
435 | ||
97896d04 ZX |
436 | extern struct kvm_x86_ops *kvm_x86_ops; |
437 | ||
54f1585a ZX |
438 | int kvm_mmu_module_init(void); |
439 | void kvm_mmu_module_exit(void); | |
440 | ||
441 | void kvm_mmu_destroy(struct kvm_vcpu *vcpu); | |
442 | int kvm_mmu_create(struct kvm_vcpu *vcpu); | |
443 | int kvm_mmu_setup(struct kvm_vcpu *vcpu); | |
444 | void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte); | |
7b52345e SY |
445 | void kvm_mmu_set_base_ptes(u64 base_pte); |
446 | void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask, | |
447 | u64 dirty_mask, u64 nx_mask, u64 x_mask); | |
54f1585a ZX |
448 | |
449 | int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); | |
450 | void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot); | |
451 | void kvm_mmu_zap_all(struct kvm *kvm); | |
3ad82a7e | 452 | unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm); |
54f1585a ZX |
453 | void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages); |
454 | ||
cc4b6871 JR |
455 | int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3); |
456 | ||
3200f405 | 457 | int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa, |
9f811285 | 458 | const void *val, int bytes); |
2f333bcb MT |
459 | int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes, |
460 | gpa_t addr, unsigned long *ret); | |
461 | ||
462 | extern bool tdp_enabled; | |
9f811285 | 463 | |
54f1585a ZX |
464 | enum emulation_result { |
465 | EMULATE_DONE, /* no further processing */ | |
466 | EMULATE_DO_MMIO, /* kvm_run filled with mmio request */ | |
467 | EMULATE_FAIL, /* can't emulate this instruction */ | |
468 | }; | |
469 | ||
571008da SY |
470 | #define EMULTYPE_NO_DECODE (1 << 0) |
471 | #define EMULTYPE_TRAP_UD (1 << 1) | |
54f1585a | 472 | int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run, |
571008da | 473 | unsigned long cr2, u16 error_code, int emulation_type); |
54f1585a ZX |
474 | void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context); |
475 | void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
476 | void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
477 | void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, | |
478 | unsigned long *rflags); | |
479 | ||
480 | unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); | |
481 | void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, | |
482 | unsigned long *rflags); | |
f2b4b7dd | 483 | void kvm_enable_efer_bits(u64); |
54f1585a ZX |
484 | int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data); |
485 | int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
486 | ||
487 | struct x86_emulate_ctxt; | |
488 | ||
489 | int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, | |
490 | int size, unsigned port); | |
491 | int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, | |
492 | int size, unsigned long count, int down, | |
493 | gva_t address, int rep, unsigned port); | |
494 | void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); | |
495 | int kvm_emulate_halt(struct kvm_vcpu *vcpu); | |
496 | int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address); | |
497 | int emulate_clts(struct kvm_vcpu *vcpu); | |
498 | int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr, | |
499 | unsigned long *dest); | |
500 | int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, | |
501 | unsigned long value); | |
502 | ||
37817f29 IE |
503 | int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason); |
504 | ||
2d3ad1f4 | 505 | void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); |
9c20456a JR |
506 | void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3); |
507 | void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); | |
508 | void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8); | |
2d3ad1f4 AK |
509 | unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu); |
510 | void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw); | |
54f1585a ZX |
511 | void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); |
512 | ||
513 | int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); | |
514 | int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); | |
515 | ||
298101da AK |
516 | void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr); |
517 | void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); | |
c3c91fee AK |
518 | void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2, |
519 | u32 error_code); | |
298101da | 520 | |
3419ffc8 SY |
521 | void kvm_inject_nmi(struct kvm_vcpu *vcpu); |
522 | ||
54f1585a ZX |
523 | void fx_init(struct kvm_vcpu *vcpu); |
524 | ||
525 | int emulator_read_std(unsigned long addr, | |
526 | void *val, | |
527 | unsigned int bytes, | |
528 | struct kvm_vcpu *vcpu); | |
529 | int emulator_write_emulated(unsigned long addr, | |
530 | const void *val, | |
531 | unsigned int bytes, | |
532 | struct kvm_vcpu *vcpu); | |
533 | ||
534 | unsigned long segment_base(u16 selector); | |
535 | ||
d835dfec | 536 | void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu); |
54f1585a ZX |
537 | void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, |
538 | const u8 *new, int bytes); | |
539 | int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); | |
540 | void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); | |
541 | int kvm_mmu_load(struct kvm_vcpu *vcpu); | |
542 | void kvm_mmu_unload(struct kvm_vcpu *vcpu); | |
543 | ||
544 | int kvm_emulate_hypercall(struct kvm_vcpu *vcpu); | |
545 | ||
546 | int kvm_fix_hypercall(struct kvm_vcpu *vcpu); | |
547 | ||
3067714c | 548 | int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code); |
34c16eec | 549 | |
18552672 JR |
550 | void kvm_enable_tdp(void); |
551 | ||
a03490ed | 552 | int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3); |
de7d789a | 553 | int complete_pio(struct kvm_vcpu *vcpu); |
ec6d273d ZX |
554 | |
555 | static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) | |
556 | { | |
557 | struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); | |
558 | ||
559 | return (struct kvm_mmu_page *)page_private(page); | |
560 | } | |
561 | ||
562 | static inline u16 read_fs(void) | |
563 | { | |
564 | u16 seg; | |
565 | asm("mov %%fs, %0" : "=g"(seg)); | |
566 | return seg; | |
567 | } | |
568 | ||
569 | static inline u16 read_gs(void) | |
570 | { | |
571 | u16 seg; | |
572 | asm("mov %%gs, %0" : "=g"(seg)); | |
573 | return seg; | |
574 | } | |
575 | ||
576 | static inline u16 read_ldt(void) | |
577 | { | |
578 | u16 ldt; | |
579 | asm("sldt %0" : "=g"(ldt)); | |
580 | return ldt; | |
581 | } | |
582 | ||
583 | static inline void load_fs(u16 sel) | |
584 | { | |
585 | asm("mov %0, %%fs" : : "rm"(sel)); | |
586 | } | |
587 | ||
588 | static inline void load_gs(u16 sel) | |
589 | { | |
590 | asm("mov %0, %%gs" : : "rm"(sel)); | |
591 | } | |
592 | ||
593 | #ifndef load_ldt | |
594 | static inline void load_ldt(u16 sel) | |
595 | { | |
596 | asm("lldt %0" : : "rm"(sel)); | |
597 | } | |
598 | #endif | |
599 | ||
600 | static inline void get_idt(struct descriptor_table *table) | |
601 | { | |
602 | asm("sidt %0" : "=m"(*table)); | |
603 | } | |
604 | ||
605 | static inline void get_gdt(struct descriptor_table *table) | |
606 | { | |
607 | asm("sgdt %0" : "=m"(*table)); | |
608 | } | |
609 | ||
610 | static inline unsigned long read_tr_base(void) | |
611 | { | |
612 | u16 tr; | |
613 | asm("str %0" : "=g"(tr)); | |
614 | return segment_base(tr); | |
615 | } | |
616 | ||
617 | #ifdef CONFIG_X86_64 | |
618 | static inline unsigned long read_msr(unsigned long msr) | |
619 | { | |
620 | u64 value; | |
621 | ||
622 | rdmsrl(msr, value); | |
623 | return value; | |
624 | } | |
625 | #endif | |
626 | ||
627 | static inline void fx_save(struct i387_fxsave_struct *image) | |
628 | { | |
629 | asm("fxsave (%0)":: "r" (image)); | |
630 | } | |
631 | ||
632 | static inline void fx_restore(struct i387_fxsave_struct *image) | |
633 | { | |
634 | asm("fxrstor (%0)":: "r" (image)); | |
635 | } | |
636 | ||
bc1a34f1 | 637 | static inline void fx_finit(void) |
ec6d273d ZX |
638 | { |
639 | asm("finit"); | |
640 | } | |
641 | ||
642 | static inline u32 get_rdx_init_val(void) | |
643 | { | |
644 | return 0x600; /* P6 family */ | |
645 | } | |
646 | ||
c1a5d4f9 AK |
647 | static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code) |
648 | { | |
649 | kvm_queue_exception_e(vcpu, GP_VECTOR, error_code); | |
650 | } | |
651 | ||
ec6d273d ZX |
652 | #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30" |
653 | #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2" | |
654 | #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3" | |
655 | #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30" | |
656 | #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0" | |
657 | #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0" | |
658 | #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4" | |
659 | #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4" | |
660 | #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30" | |
1439442c | 661 | #define ASM_VMX_INVEPT ".byte 0x66, 0x0f, 0x38, 0x80, 0x08" |
2384d2b3 | 662 | #define ASM_VMX_INVVPID ".byte 0x66, 0x0f, 0x38, 0x81, 0x08" |
ec6d273d ZX |
663 | |
664 | #define MSR_IA32_TIME_STAMP_COUNTER 0x010 | |
665 | ||
666 | #define TSS_IOPB_BASE_OFFSET 0x66 | |
667 | #define TSS_BASE_SIZE 0x68 | |
668 | #define TSS_IOPB_SIZE (65536 / 8) | |
669 | #define TSS_REDIRECTION_SIZE (256 / 8) | |
7d76b4d3 JP |
670 | #define RMODE_TSS_SIZE \ |
671 | (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) | |
53e0aa7b | 672 | |
37817f29 IE |
673 | enum { |
674 | TASK_SWITCH_CALL = 0, | |
675 | TASK_SWITCH_IRET = 1, | |
676 | TASK_SWITCH_JMP = 2, | |
677 | TASK_SWITCH_GATE = 3, | |
678 | }; | |
679 | ||
2714d1d3 FEL |
680 | #define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \ |
681 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
682 | vcpu, 5, d1, d2, d3, d4, d5) | |
683 | #define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \ | |
684 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
685 | vcpu, 4, d1, d2, d3, d4, 0) | |
686 | #define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \ | |
687 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
688 | vcpu, 3, d1, d2, d3, 0, 0) | |
689 | #define KVMTRACE_2D(evt, vcpu, d1, d2, name) \ | |
690 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
691 | vcpu, 2, d1, d2, 0, 0, 0) | |
692 | #define KVMTRACE_1D(evt, vcpu, d1, name) \ | |
693 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
694 | vcpu, 1, d1, 0, 0, 0, 0) | |
695 | #define KVMTRACE_0D(evt, vcpu, name) \ | |
696 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
697 | vcpu, 0, 0, 0, 0, 0, 0) | |
698 | ||
4ecac3fd AK |
699 | #ifdef CONFIG_64BIT |
700 | #define KVM_EX_ENTRY ".quad" | |
701 | #else | |
702 | #define KVM_EX_ENTRY ".long" | |
703 | #endif | |
704 | ||
705 | /* | |
706 | * Hardware virtualization extension instructions may fault if a | |
707 | * reboot turns off virtualization while processes are running. | |
708 | * Trap the fault and ignore the instruction if that happens. | |
709 | */ | |
710 | asmlinkage void kvm_handle_fault_on_reboot(void); | |
711 | ||
712 | #define __kvm_handle_fault_on_reboot(insn) \ | |
713 | "666: " insn "\n\t" \ | |
714 | ".pushsection .text.fixup, \"ax\" \n" \ | |
715 | "667: \n\t" \ | |
716 | "push $666b \n\t" \ | |
717 | "jmp kvm_handle_fault_on_reboot \n\t" \ | |
718 | ".popsection \n\t" \ | |
719 | ".pushsection __ex_table, \"a\" \n\t" \ | |
720 | KVM_EX_ENTRY " 666b, 667b \n\t" \ | |
721 | ".popsection" | |
722 | ||
043405e1 | 723 | #endif |