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KVM: Synchronize guest physical memory map to host virtual memory map
[net-next-2.6.git] / include / asm-x86 / kvm_host.h
CommitLineData
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>
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
HB		 23#include <asm/desc.h>
24
69a9f69b
AK		 25#define KVM_MAX_VCPUS 16
26#define KVM_MEMORY_SLOTS 32
27/* memory slots that does not exposed to userspace */
28#define KVM_PRIVATE_MEM_SLOTS 4
29
30#define KVM_PIO_PAGE_OFFSET 1
542472b5 31#define KVM_COALESCED_MMIO_PAGE_OFFSET 2
69a9f69b 32
cd6e8f87
ZX		 33#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
34#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
7d76b4d3
JP		 35#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
36 0xFFFFFF0000000000ULL)
cd6e8f87 37
7d76b4d3 38#define KVM_GUEST_CR0_MASK \
cd6e8f87
ZX		 39 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
40 | X86_CR0_NW | X86_CR0_CD)
7d76b4d3 41#define KVM_VM_CR0_ALWAYS_ON \
cd6e8f87
ZX		 42 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
43 | X86_CR0_MP)
7d76b4d3 44#define KVM_GUEST_CR4_MASK \
cd6e8f87
ZX		 45 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
46#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
47#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
48
49#define INVALID_PAGE (~(hpa_t)0)
50#define UNMAPPED_GVA (~(gpa_t)0)
51
05da4558
MT		 52/* shadow tables are PAE even on non-PAE hosts */
53#define KVM_HPAGE_SHIFT 21
54#define KVM_HPAGE_SIZE (1UL << KVM_HPAGE_SHIFT)
55#define KVM_HPAGE_MASK (~(KVM_HPAGE_SIZE - 1))
56
57#define KVM_PAGES_PER_HPAGE (KVM_HPAGE_SIZE / PAGE_SIZE)
58
cd6e8f87
ZX		 59#define DE_VECTOR 0
60#define UD_VECTOR 6
61#define NM_VECTOR 7
62#define DF_VECTOR 8
63#define TS_VECTOR 10
64#define NP_VECTOR 11
65#define SS_VECTOR 12
66#define GP_VECTOR 13
67#define PF_VECTOR 14
53371b50 68#define MC_VECTOR 18
cd6e8f87
ZX		 69
70#define SELECTOR_TI_MASK (1 << 2)
71#define SELECTOR_RPL_MASK 0x03
72
73#define IOPL_SHIFT 12
74
d69fb81f
ZX		 75#define KVM_ALIAS_SLOTS 4
76
d657a98e
ZX		 77#define KVM_PERMILLE_MMU_PAGES 20
78#define KVM_MIN_ALLOC_MMU_PAGES 64
1ae0a13d
DE		 79#define KVM_MMU_HASH_SHIFT 10
80#define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
d657a98e
ZX		 81#define KVM_MIN_FREE_MMU_PAGES 5
82#define KVM_REFILL_PAGES 25
83#define KVM_MAX_CPUID_ENTRIES 40
9ba075a6 84#define KVM_NR_VAR_MTRR 8
d657a98e 85
e9b11c17
ZX		 86extern spinlock_t kvm_lock;
87extern struct list_head vm_list;
88
d657a98e
ZX		 89struct kvm_vcpu;
90struct kvm;
91
2b3ccfa0
ZX		 92enum {
93 VCPU_REGS_RAX = 0,
94 VCPU_REGS_RCX = 1,
95 VCPU_REGS_RDX = 2,
96 VCPU_REGS_RBX = 3,
97 VCPU_REGS_RSP = 4,
98 VCPU_REGS_RBP = 5,
99 VCPU_REGS_RSI = 6,
100 VCPU_REGS_RDI = 7,
101#ifdef CONFIG_X86_64
102 VCPU_REGS_R8 = 8,
103 VCPU_REGS_R9 = 9,
104 VCPU_REGS_R10 = 10,
105 VCPU_REGS_R11 = 11,
106 VCPU_REGS_R12 = 12,
107 VCPU_REGS_R13 = 13,
108 VCPU_REGS_R14 = 14,
109 VCPU_REGS_R15 = 15,
110#endif
111 NR_VCPU_REGS
112};
113
114enum {
81609e3e 115 VCPU_SREG_ES,
2b3ccfa0 116 VCPU_SREG_CS,
81609e3e 117 VCPU_SREG_SS,
2b3ccfa0 118 VCPU_SREG_DS,
2b3ccfa0
ZX		 119 VCPU_SREG_FS,
120 VCPU_SREG_GS,
2b3ccfa0
ZX		 121 VCPU_SREG_TR,
122 VCPU_SREG_LDTR,
123};
124
edf88417 125#include <asm/kvm_x86_emulate.h>
2b3ccfa0 126
d657a98e
ZX		 127#define KVM_NR_MEM_OBJS 40
128
69a9f69b
AK		 129struct kvm_guest_debug {
130 int enabled;
131 unsigned long bp[4];
132 int singlestep;
133};
134
d657a98e
ZX		 135/*
136 * We don't want allocation failures within the mmu code, so we preallocate
137 * enough memory for a single page fault in a cache.
138 */
139struct kvm_mmu_memory_cache {
140 int nobjs;
141 void *objects[KVM_NR_MEM_OBJS];
142};
143
144#define NR_PTE_CHAIN_ENTRIES 5
145
146struct kvm_pte_chain {
147 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
148 struct hlist_node link;
149};
150
151/*
152 * kvm_mmu_page_role, below, is defined as:
153 *
154 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
155 * bits 4:7 - page table level for this shadow (1-4)
156 * bits 8:9 - page table quadrant for 2-level guests
157 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
158 * bits 17:19 - common access permissions for all ptes in this shadow page
159 */
160union kvm_mmu_page_role {
161 unsigned word;
162 struct {
7d76b4d3
JP		 163 unsigned glevels:4;
164 unsigned level:4;
165 unsigned quadrant:2;
166 unsigned pad_for_nice_hex_output:6;
167 unsigned metaphysical:1;
168 unsigned access:3;
2e53d63a 169 unsigned invalid:1;
d657a98e
ZX		 170 };
171};
172
173struct kvm_mmu_page {
174 struct list_head link;
175 struct hlist_node hash_link;
176
177 /*
178 * The following two entries are used to key the shadow page in the
179 * hash table.
180 */
181 gfn_t gfn;
182 union kvm_mmu_page_role role;
183
184 u64 *spt;
185 /* hold the gfn of each spte inside spt */
186 gfn_t *gfns;
187 unsigned long slot_bitmap; /* One bit set per slot which has memory
188 * in this shadow page.
189 */
190 int multimapped; /* More than one parent_pte? */
191 int root_count; /* Currently serving as active root */
192 union {
193 u64 *parent_pte; /* !multimapped */
194 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
195 };
196};
197
198/*
199 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
200 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
201 * mode.
202 */
203struct kvm_mmu {
204 void (*new_cr3)(struct kvm_vcpu *vcpu);
205 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
206 void (*free)(struct kvm_vcpu *vcpu);
207 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
208 void (*prefetch_page)(struct kvm_vcpu *vcpu,
209 struct kvm_mmu_page *page);
210 hpa_t root_hpa;
211 int root_level;
212 int shadow_root_level;
213
214 u64 *pae_root;
215};
216
ad312c7c 217struct kvm_vcpu_arch {
34c16eec
ZX		 218 u64 host_tsc;
219 int interrupt_window_open;
220 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
221 DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
222 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
223 unsigned long rip; /* needs vcpu_load_rsp_rip() */
224
225 unsigned long cr0;
226 unsigned long cr2;
227 unsigned long cr3;
228 unsigned long cr4;
229 unsigned long cr8;
230 u64 pdptrs[4]; /* pae */
231 u64 shadow_efer;
232 u64 apic_base;
233 struct kvm_lapic *apic; /* kernel irqchip context */
34c16eec
ZX		 234 int mp_state;
235 int sipi_vector;
236 u64 ia32_misc_enable_msr;
b209749f 237 bool tpr_access_reporting;
34c16eec
ZX		 238
239 struct kvm_mmu mmu;
240
241 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
242 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
243 struct kvm_mmu_memory_cache mmu_page_cache;
244 struct kvm_mmu_memory_cache mmu_page_header_cache;
245
246 gfn_t last_pt_write_gfn;
247 int last_pt_write_count;
248 u64 *last_pte_updated;
1b7fcd32 249 gfn_t last_pte_gfn;
34c16eec 250
d7824fff 251 struct {
35149e21
AL		 252 gfn_t gfn; /* presumed gfn during guest pte update */
253 pfn_t pfn; /* pfn corresponding to that gfn */
05da4558 254 int largepage;
e930bffe 255 unsigned long mmu_seq;
d7824fff
AK		 256 } update_pte;
257
34c16eec
ZX		 258 struct i387_fxsave_struct host_fx_image;
259 struct i387_fxsave_struct guest_fx_image;
260
261 gva_t mmio_fault_cr2;
262 struct kvm_pio_request pio;
263 void *pio_data;
264
298101da
AK		 265 struct kvm_queued_exception {
266 bool pending;
267 bool has_error_code;
268 u8 nr;
269 u32 error_code;
270 } exception;
271
34c16eec
ZX		 272 struct {
273 int active;
274 u8 save_iopl;
275 struct kvm_save_segment {
276 u16 selector;
277 unsigned long base;
278 u32 limit;
279 u32 ar;
280 } tr, es, ds, fs, gs;
281 } rmode;
282 int halt_request; /* real mode on Intel only */
283
284 int cpuid_nent;
07716717 285 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
34c16eec
ZX		 286 /* emulate context */
287
288 struct x86_emulate_ctxt emulate_ctxt;
18068523
GOC		 289
290 gpa_t time;
50d0a0f9
GH		 291 struct pvclock_vcpu_time_info hv_clock;
292 unsigned int hv_clock_tsc_khz;
18068523
GOC		 293 unsigned int time_offset;
294 struct page *time_page;
3419ffc8
SY		 295
296 bool nmi_pending;
9ba075a6
AK		 297
298 u64 mtrr[0x100];
34c16eec
ZX		 299};
300
d69fb81f
ZX		 301struct kvm_mem_alias {
302 gfn_t base_gfn;
303 unsigned long npages;
304 gfn_t target_gfn;
305};
306
307struct kvm_arch{
308 int naliases;
309 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
f05e70ac
ZX		 310
311 unsigned int n_free_mmu_pages;
312 unsigned int n_requested_mmu_pages;
313 unsigned int n_alloc_mmu_pages;
314 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
315 /*
316 * Hash table of struct kvm_mmu_page.
317 */
318 struct list_head active_mmu_pages;
d7deeeb0
ZX		 319 struct kvm_pic *vpic;
320 struct kvm_ioapic *vioapic;
7837699f 321 struct kvm_pit *vpit;
bfc6d222
ZX		 322
323 int round_robin_prev_vcpu;
324 unsigned int tss_addr;
325 struct page *apic_access_page;
18068523
GOC		 326
327 gpa_t wall_clock;
b7ebfb05
SY		 328
329 struct page *ept_identity_pagetable;
330 bool ept_identity_pagetable_done;
d69fb81f
ZX		 331};
332
0711456c
ZX		 333struct kvm_vm_stat {
334 u32 mmu_shadow_zapped;
335 u32 mmu_pte_write;
336 u32 mmu_pte_updated;
337 u32 mmu_pde_zapped;
338 u32 mmu_flooded;
339 u32 mmu_recycled;
dfc5aa00 340 u32 mmu_cache_miss;
0711456c 341 u32 remote_tlb_flush;
05da4558 342 u32 lpages;
0711456c
ZX		 343};
344
77b4c255
ZX		 345struct kvm_vcpu_stat {
346 u32 pf_fixed;
347 u32 pf_guest;
348 u32 tlb_flush;
349 u32 invlpg;
350
351 u32 exits;
352 u32 io_exits;
353 u32 mmio_exits;
354 u32 signal_exits;
355 u32 irq_window_exits;
f08864b4 356 u32 nmi_window_exits;
77b4c255
ZX		 357 u32 halt_exits;
358 u32 halt_wakeup;
359 u32 request_irq_exits;
360 u32 irq_exits;
361 u32 host_state_reload;
362 u32 efer_reload;
363 u32 fpu_reload;
364 u32 insn_emulation;
365 u32 insn_emulation_fail;
f11c3a8d 366 u32 hypercalls;
77b4c255 367};
ad312c7c 368
e01a1b57
HB		 369struct descriptor_table {
370 u16 limit;
371 unsigned long base;
372} __attribute__((packed));
373
ea4a5ff8
ZX		 374struct kvm_x86_ops {
375 int (*cpu_has_kvm_support)(void); /* __init */
376 int (*disabled_by_bios)(void); /* __init */
377 void (*hardware_enable)(void *dummy); /* __init */
378 void (*hardware_disable)(void *dummy);
379 void (*check_processor_compatibility)(void *rtn);
380 int (*hardware_setup)(void); /* __init */
381 void (*hardware_unsetup)(void); /* __exit */
774ead3a 382 bool (*cpu_has_accelerated_tpr)(void);
ea4a5ff8
ZX		 383
384 /* Create, but do not attach this VCPU */
385 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
386 void (*vcpu_free)(struct kvm_vcpu *vcpu);
387 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
388
389 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
390 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
391 void (*vcpu_put)(struct kvm_vcpu *vcpu);
ea4a5ff8
ZX		 392
393 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
394 struct kvm_debug_guest *dbg);
395 void (*guest_debug_pre)(struct kvm_vcpu *vcpu);
396 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
397 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
398 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
399 void (*get_segment)(struct kvm_vcpu *vcpu,
400 struct kvm_segment *var, int seg);
2e4d2653 401 int (*get_cpl)(struct kvm_vcpu *vcpu);
ea4a5ff8
ZX		 402 void (*set_segment)(struct kvm_vcpu *vcpu,
403 struct kvm_segment *var, int seg);
404 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
405 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
406 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
407 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
408 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
409 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
410 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
411 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
412 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
413 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
414 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
415 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
416 int *exception);
417 void (*cache_regs)(struct kvm_vcpu *vcpu);
418 void (*decache_regs)(struct kvm_vcpu *vcpu);
419 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
420 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
421
422 void (*tlb_flush)(struct kvm_vcpu *vcpu);
ea4a5ff8 423
ea4a5ff8
ZX		 424 void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
425 int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
426 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
427 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
428 unsigned char *hypercall_addr);
429 int (*get_irq)(struct kvm_vcpu *vcpu);
430 void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
298101da
AK		 431 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
432 bool has_error_code, u32 error_code);
433 bool (*exception_injected)(struct kvm_vcpu *vcpu);
ea4a5ff8
ZX		 434 void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
435 void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
436 struct kvm_run *run);
437
438 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
67253af5 439 int (*get_tdp_level)(void);
ea4a5ff8
ZX		 440};
441
97896d04
ZX		 442extern struct kvm_x86_ops *kvm_x86_ops;
443
54f1585a
ZX		 444int kvm_mmu_module_init(void);
445void kvm_mmu_module_exit(void);
446
447void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
448int kvm_mmu_create(struct kvm_vcpu *vcpu);
449int kvm_mmu_setup(struct kvm_vcpu *vcpu);
450void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
7b52345e
SY		 451void kvm_mmu_set_base_ptes(u64 base_pte);
452void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
453 u64 dirty_mask, u64 nx_mask, u64 x_mask);
54f1585a
ZX		 454
455int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
456void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
457void kvm_mmu_zap_all(struct kvm *kvm);
3ad82a7e 458unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
54f1585a
ZX		 459void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
460
cc4b6871
JR		 461int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
462
3200f405 463int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
9f811285 464 const void *val, int bytes);
2f333bcb
MT		 465int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
466 gpa_t addr, unsigned long *ret);
467
468extern bool tdp_enabled;
9f811285 469
54f1585a
ZX		 470enum emulation_result {
471 EMULATE_DONE, /* no further processing */
472 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
473 EMULATE_FAIL, /* can't emulate this instruction */
474};
475
571008da
SY		 476#define EMULTYPE_NO_DECODE (1 << 0)
477#define EMULTYPE_TRAP_UD (1 << 1)
54f1585a 478int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
571008da 479 unsigned long cr2, u16 error_code, int emulation_type);
54f1585a
ZX		 480void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
481void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
482void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
483void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
484 unsigned long *rflags);
485
486unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
487void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
488 unsigned long *rflags);
f2b4b7dd 489void kvm_enable_efer_bits(u64);
54f1585a
ZX		 490int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
491int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
492
493struct x86_emulate_ctxt;
494
495int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
496 int size, unsigned port);
497int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
498 int size, unsigned long count, int down,
499 gva_t address, int rep, unsigned port);
500void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
501int kvm_emulate_halt(struct kvm_vcpu *vcpu);
502int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
503int emulate_clts(struct kvm_vcpu *vcpu);
504int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
505 unsigned long *dest);
506int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
507 unsigned long value);
508
3e6e0aab
GT		 509void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
510int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector,
511 int type_bits, int seg);
512
37817f29
IE		 513int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason);
514
2d3ad1f4 515void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
9c20456a
JR		 516void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
517void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
518void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
2d3ad1f4
AK		 519unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
520void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
54f1585a
ZX		 521void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
522
523int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
524int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
525
298101da
AK		 526void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
527void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
c3c91fee
AK		 528void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
529 u32 error_code);
298101da 530
3419ffc8
SY		 531void kvm_inject_nmi(struct kvm_vcpu *vcpu);
532
54f1585a
ZX		 533void fx_init(struct kvm_vcpu *vcpu);
534
535int emulator_read_std(unsigned long addr,
536 void *val,
537 unsigned int bytes,
538 struct kvm_vcpu *vcpu);
539int emulator_write_emulated(unsigned long addr,
540 const void *val,
541 unsigned int bytes,
542 struct kvm_vcpu *vcpu);
543
544unsigned long segment_base(u16 selector);
545
d835dfec 546void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
54f1585a
ZX		 547void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
548 const u8 *new, int bytes);
549int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
550void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
551int kvm_mmu_load(struct kvm_vcpu *vcpu);
552void kvm_mmu_unload(struct kvm_vcpu *vcpu);
553
554int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
555
556int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
557
3067714c 558int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
34c16eec 559
18552672 560void kvm_enable_tdp(void);
5f4cb662 561void kvm_disable_tdp(void);
18552672 562
a03490ed 563int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
de7d789a 564int complete_pio(struct kvm_vcpu *vcpu);
ec6d273d
ZX		 565
566static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
567{
568 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
569
570 return (struct kvm_mmu_page *)page_private(page);
571}
572
d6e88aec 573static inline u16 kvm_read_fs(void)
ec6d273d
ZX		 574{
575 u16 seg;
576 asm("mov %%fs, %0" : "=g"(seg));
577 return seg;
578}
579
d6e88aec 580static inline u16 kvm_read_gs(void)
ec6d273d
ZX		 581{
582 u16 seg;
583 asm("mov %%gs, %0" : "=g"(seg));
584 return seg;
585}
586
d6e88aec 587static inline u16 kvm_read_ldt(void)
ec6d273d
ZX		 588{
589 u16 ldt;
590 asm("sldt %0" : "=g"(ldt));
591 return ldt;
592}
593
d6e88aec 594static inline void kvm_load_fs(u16 sel)
ec6d273d
ZX		 595{
596 asm("mov %0, %%fs" : : "rm"(sel));
597}
598
d6e88aec 599static inline void kvm_load_gs(u16 sel)
ec6d273d
ZX		 600{
601 asm("mov %0, %%gs" : : "rm"(sel));
602}
603
d6e88aec 604static inline void kvm_load_ldt(u16 sel)
ec6d273d
ZX		 605{
606 asm("lldt %0" : : "rm"(sel));
607}
ec6d273d 608
d6e88aec 609static inline void kvm_get_idt(struct descriptor_table *table)
ec6d273d
ZX		 610{
611 asm("sidt %0" : "=m"(*table));
612}
613
d6e88aec 614static inline void kvm_get_gdt(struct descriptor_table *table)
ec6d273d
ZX		 615{
616 asm("sgdt %0" : "=m"(*table));
617}
618
d6e88aec 619static inline unsigned long kvm_read_tr_base(void)
ec6d273d
ZX		 620{
621 u16 tr;
622 asm("str %0" : "=g"(tr));
623 return segment_base(tr);
624}
625
626#ifdef CONFIG_X86_64
627static inline unsigned long read_msr(unsigned long msr)
628{
629 u64 value;
630
631 rdmsrl(msr, value);
632 return value;
633}
634#endif
635
d6e88aec 636static inline void kvm_fx_save(struct i387_fxsave_struct *image)
ec6d273d
ZX		 637{
638 asm("fxsave (%0)":: "r" (image));
639}
640
d6e88aec 641static inline void kvm_fx_restore(struct i387_fxsave_struct *image)
ec6d273d
ZX		 642{
643 asm("fxrstor (%0)":: "r" (image));
644}
645
d6e88aec 646static inline void kvm_fx_finit(void)
ec6d273d
ZX		 647{
648 asm("finit");
649}
650
651static inline u32 get_rdx_init_val(void)
652{
653 return 0x600; /* P6 family */
654}
655
c1a5d4f9
AK		 656static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
657{
658 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
659}
660
ec6d273d
ZX		 661#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
662#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
663#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
664#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
665#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
666#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
667#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
668#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
669#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
1439442c 670#define ASM_VMX_INVEPT ".byte 0x66, 0x0f, 0x38, 0x80, 0x08"
2384d2b3 671#define ASM_VMX_INVVPID ".byte 0x66, 0x0f, 0x38, 0x81, 0x08"
ec6d273d
ZX		 672
673#define MSR_IA32_TIME_STAMP_COUNTER 0x010
674
675#define TSS_IOPB_BASE_OFFSET 0x66
676#define TSS_BASE_SIZE 0x68
677#define TSS_IOPB_SIZE (65536 / 8)
678#define TSS_REDIRECTION_SIZE (256 / 8)
7d76b4d3
JP		 679#define RMODE_TSS_SIZE \
680 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
53e0aa7b 681
37817f29
IE		 682enum {
683 TASK_SWITCH_CALL = 0,
684 TASK_SWITCH_IRET = 1,
685 TASK_SWITCH_JMP = 2,
686 TASK_SWITCH_GATE = 3,
687};
688
2714d1d3
FEL		 689#define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
690 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
691 vcpu, 5, d1, d2, d3, d4, d5)
692#define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
693 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
694 vcpu, 4, d1, d2, d3, d4, 0)
695#define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
696 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
697 vcpu, 3, d1, d2, d3, 0, 0)
698#define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
699 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
700 vcpu, 2, d1, d2, 0, 0, 0)
701#define KVMTRACE_1D(evt, vcpu, d1, name) \
702 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
703 vcpu, 1, d1, 0, 0, 0, 0)
704#define KVMTRACE_0D(evt, vcpu, name) \
705 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
706 vcpu, 0, 0, 0, 0, 0, 0)
707
4ecac3fd 708#ifdef CONFIG_64BIT
33a37eb4
IM		 709# define KVM_EX_ENTRY ".quad"
710# define KVM_EX_PUSH "pushq"
4ecac3fd 711#else
33a37eb4
IM		 712# define KVM_EX_ENTRY ".long"
713# define KVM_EX_PUSH "pushl"
4ecac3fd
AK		 714#endif
715
716/*
717 * Hardware virtualization extension instructions may fault if a
718 * reboot turns off virtualization while processes are running.
719 * Trap the fault and ignore the instruction if that happens.
720 */
721asmlinkage void kvm_handle_fault_on_reboot(void);
722
723#define __kvm_handle_fault_on_reboot(insn) \
724 "666: " insn "\n\t" \
725 ".pushsection .text.fixup, \"ax\" \n" \
726 "667: \n\t" \
33a37eb4 727 KVM_EX_PUSH " $666b \n\t" \
4ecac3fd
AK		 728 "jmp kvm_handle_fault_on_reboot \n\t" \
729 ".popsection \n\t" \
730 ".pushsection __ex_table, \"a\" \n\t" \
731 KVM_EX_ENTRY " 666b, 667b \n\t" \
732 ".popsection"
733
e930bffe
AA		 734#define KVM_ARCH_WANT_MMU_NOTIFIER
735int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
736int kvm_age_hva(struct kvm *kvm, unsigned long hva);
737
043405e1 738#endif
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