KVM: VMX: Allow the guest to own some cr0 bits
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / arch / x86 / include / asm / kvm_host.h
blob693046a7a12d2f3c9a5e3c1bcfd8ca7c58f896f7
1 /*
2 * Kernel-based Virtual Machine driver for Linux
4 * This header defines architecture specific interfaces, x86 version
6 * This work is licensed under the terms of the GNU GPL, version 2. See
7 * the COPYING file in the top-level directory.
9 */
11 #ifndef _ASM_X86_KVM_HOST_H
12 #define _ASM_X86_KVM_HOST_H
14 #include <linux/types.h>
15 #include <linux/mm.h>
16 #include <linux/mmu_notifier.h>
17 #include <linux/tracepoint.h>
19 #include <linux/kvm.h>
20 #include <linux/kvm_para.h>
21 #include <linux/kvm_types.h>
23 #include <asm/pvclock-abi.h>
24 #include <asm/desc.h>
25 #include <asm/mtrr.h>
26 #include <asm/msr-index.h>
28 #define KVM_MAX_VCPUS 64
29 #define KVM_MEMORY_SLOTS 32
30 /* memory slots that does not exposed to userspace */
31 #define KVM_PRIVATE_MEM_SLOTS 4
33 #define KVM_PIO_PAGE_OFFSET 1
34 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
36 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
37 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
38 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
39 0xFFFFFF0000000000ULL)
41 #define INVALID_PAGE (~(hpa_t)0)
42 #define UNMAPPED_GVA (~(gpa_t)0)
44 /* KVM Hugepage definitions for x86 */
45 #define KVM_NR_PAGE_SIZES 3
46 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + (((x) - 1) * 9))
47 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
48 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
49 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
51 #define DE_VECTOR 0
52 #define DB_VECTOR 1
53 #define BP_VECTOR 3
54 #define OF_VECTOR 4
55 #define BR_VECTOR 5
56 #define UD_VECTOR 6
57 #define NM_VECTOR 7
58 #define DF_VECTOR 8
59 #define TS_VECTOR 10
60 #define NP_VECTOR 11
61 #define SS_VECTOR 12
62 #define GP_VECTOR 13
63 #define PF_VECTOR 14
64 #define MF_VECTOR 16
65 #define MC_VECTOR 18
67 #define SELECTOR_TI_MASK (1 << 2)
68 #define SELECTOR_RPL_MASK 0x03
70 #define IOPL_SHIFT 12
72 #define KVM_ALIAS_SLOTS 4
74 #define KVM_PERMILLE_MMU_PAGES 20
75 #define KVM_MIN_ALLOC_MMU_PAGES 64
76 #define KVM_MMU_HASH_SHIFT 10
77 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
78 #define KVM_MIN_FREE_MMU_PAGES 5
79 #define KVM_REFILL_PAGES 25
80 #define KVM_MAX_CPUID_ENTRIES 40
81 #define KVM_NR_FIXED_MTRR_REGION 88
82 #define KVM_NR_VAR_MTRR 8
84 extern spinlock_t kvm_lock;
85 extern struct list_head vm_list;
87 struct kvm_vcpu;
88 struct kvm;
90 enum kvm_reg {
91 VCPU_REGS_RAX = 0,
92 VCPU_REGS_RCX = 1,
93 VCPU_REGS_RDX = 2,
94 VCPU_REGS_RBX = 3,
95 VCPU_REGS_RSP = 4,
96 VCPU_REGS_RBP = 5,
97 VCPU_REGS_RSI = 6,
98 VCPU_REGS_RDI = 7,
99 #ifdef CONFIG_X86_64
100 VCPU_REGS_R8 = 8,
101 VCPU_REGS_R9 = 9,
102 VCPU_REGS_R10 = 10,
103 VCPU_REGS_R11 = 11,
104 VCPU_REGS_R12 = 12,
105 VCPU_REGS_R13 = 13,
106 VCPU_REGS_R14 = 14,
107 VCPU_REGS_R15 = 15,
108 #endif
109 VCPU_REGS_RIP,
110 NR_VCPU_REGS
113 enum kvm_reg_ex {
114 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
117 enum {
118 VCPU_SREG_ES,
119 VCPU_SREG_CS,
120 VCPU_SREG_SS,
121 VCPU_SREG_DS,
122 VCPU_SREG_FS,
123 VCPU_SREG_GS,
124 VCPU_SREG_TR,
125 VCPU_SREG_LDTR,
128 #include <asm/kvm_emulate.h>
130 #define KVM_NR_MEM_OBJS 40
132 #define KVM_NR_DB_REGS 4
134 #define DR6_BD (1 << 13)
135 #define DR6_BS (1 << 14)
136 #define DR6_FIXED_1 0xffff0ff0
137 #define DR6_VOLATILE 0x0000e00f
139 #define DR7_BP_EN_MASK 0x000000ff
140 #define DR7_GE (1 << 9)
141 #define DR7_GD (1 << 13)
142 #define DR7_FIXED_1 0x00000400
143 #define DR7_VOLATILE 0xffff23ff
146 * We don't want allocation failures within the mmu code, so we preallocate
147 * enough memory for a single page fault in a cache.
149 struct kvm_mmu_memory_cache {
150 int nobjs;
151 void *objects[KVM_NR_MEM_OBJS];
154 #define NR_PTE_CHAIN_ENTRIES 5
156 struct kvm_pte_chain {
157 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
158 struct hlist_node link;
162 * kvm_mmu_page_role, below, is defined as:
164 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
165 * bits 4:7 - page table level for this shadow (1-4)
166 * bits 8:9 - page table quadrant for 2-level guests
167 * bit 16 - direct mapping of virtual to physical mapping at gfn
168 * used for real mode and two-dimensional paging
169 * bits 17:19 - common access permissions for all ptes in this shadow page
171 union kvm_mmu_page_role {
172 unsigned word;
173 struct {
174 unsigned glevels:4;
175 unsigned level:4;
176 unsigned quadrant:2;
177 unsigned pad_for_nice_hex_output:6;
178 unsigned direct:1;
179 unsigned access:3;
180 unsigned invalid:1;
181 unsigned cr4_pge:1;
182 unsigned nxe:1;
186 struct kvm_mmu_page {
187 struct list_head link;
188 struct hlist_node hash_link;
190 struct list_head oos_link;
193 * The following two entries are used to key the shadow page in the
194 * hash table.
196 gfn_t gfn;
197 union kvm_mmu_page_role role;
199 u64 *spt;
200 /* hold the gfn of each spte inside spt */
201 gfn_t *gfns;
203 * One bit set per slot which has memory
204 * in this shadow page.
206 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
207 int multimapped; /* More than one parent_pte? */
208 int root_count; /* Currently serving as active root */
209 bool unsync;
210 unsigned int unsync_children;
211 union {
212 u64 *parent_pte; /* !multimapped */
213 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
215 DECLARE_BITMAP(unsync_child_bitmap, 512);
218 struct kvm_pv_mmu_op_buffer {
219 void *ptr;
220 unsigned len;
221 unsigned processed;
222 char buf[512] __aligned(sizeof(long));
225 struct kvm_pio_request {
226 unsigned long count;
227 int cur_count;
228 gva_t guest_gva;
229 int in;
230 int port;
231 int size;
232 int string;
233 int down;
234 int rep;
238 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
239 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
240 * mode.
242 struct kvm_mmu {
243 void (*new_cr3)(struct kvm_vcpu *vcpu);
244 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
245 void (*free)(struct kvm_vcpu *vcpu);
246 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
247 void (*prefetch_page)(struct kvm_vcpu *vcpu,
248 struct kvm_mmu_page *page);
249 int (*sync_page)(struct kvm_vcpu *vcpu,
250 struct kvm_mmu_page *sp);
251 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
252 hpa_t root_hpa;
253 int root_level;
254 int shadow_root_level;
255 union kvm_mmu_page_role base_role;
257 u64 *pae_root;
258 u64 rsvd_bits_mask[2][4];
261 struct kvm_vcpu_arch {
262 u64 host_tsc;
264 * rip and regs accesses must go through
265 * kvm_{register,rip}_{read,write} functions.
267 unsigned long regs[NR_VCPU_REGS];
268 u32 regs_avail;
269 u32 regs_dirty;
271 unsigned long cr0;
272 unsigned long cr0_guest_owned_bits;
273 unsigned long cr2;
274 unsigned long cr3;
275 unsigned long cr4;
276 unsigned long cr4_guest_owned_bits;
277 unsigned long cr8;
278 u32 hflags;
279 u64 pdptrs[4]; /* pae */
280 u64 shadow_efer;
281 u64 apic_base;
282 struct kvm_lapic *apic; /* kernel irqchip context */
283 int32_t apic_arb_prio;
284 int mp_state;
285 int sipi_vector;
286 u64 ia32_misc_enable_msr;
287 bool tpr_access_reporting;
289 struct kvm_mmu mmu;
290 /* only needed in kvm_pv_mmu_op() path, but it's hot so
291 * put it here to avoid allocation */
292 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
294 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
295 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
296 struct kvm_mmu_memory_cache mmu_page_cache;
297 struct kvm_mmu_memory_cache mmu_page_header_cache;
299 gfn_t last_pt_write_gfn;
300 int last_pt_write_count;
301 u64 *last_pte_updated;
302 gfn_t last_pte_gfn;
304 struct {
305 gfn_t gfn; /* presumed gfn during guest pte update */
306 pfn_t pfn; /* pfn corresponding to that gfn */
307 unsigned long mmu_seq;
308 } update_pte;
310 struct i387_fxsave_struct host_fx_image;
311 struct i387_fxsave_struct guest_fx_image;
313 gva_t mmio_fault_cr2;
314 struct kvm_pio_request pio;
315 void *pio_data;
317 u8 event_exit_inst_len;
319 struct kvm_queued_exception {
320 bool pending;
321 bool has_error_code;
322 u8 nr;
323 u32 error_code;
324 } exception;
326 struct kvm_queued_interrupt {
327 bool pending;
328 bool soft;
329 u8 nr;
330 } interrupt;
332 int halt_request; /* real mode on Intel only */
334 int cpuid_nent;
335 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
336 /* emulate context */
338 struct x86_emulate_ctxt emulate_ctxt;
340 gpa_t time;
341 struct pvclock_vcpu_time_info hv_clock;
342 unsigned int hv_clock_tsc_khz;
343 unsigned int time_offset;
344 struct page *time_page;
346 bool nmi_pending;
347 bool nmi_injected;
349 struct mtrr_state_type mtrr_state;
350 u32 pat;
352 int switch_db_regs;
353 unsigned long db[KVM_NR_DB_REGS];
354 unsigned long dr6;
355 unsigned long dr7;
356 unsigned long eff_db[KVM_NR_DB_REGS];
358 u64 mcg_cap;
359 u64 mcg_status;
360 u64 mcg_ctl;
361 u64 *mce_banks;
363 /* used for guest single stepping over the given code position */
364 u16 singlestep_cs;
365 unsigned long singlestep_rip;
368 struct kvm_mem_alias {
369 gfn_t base_gfn;
370 unsigned long npages;
371 gfn_t target_gfn;
372 #define KVM_ALIAS_INVALID 1UL
373 unsigned long flags;
376 #define KVM_ARCH_HAS_UNALIAS_INSTANTIATION
378 struct kvm_mem_aliases {
379 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
380 int naliases;
383 struct kvm_arch {
384 struct kvm_mem_aliases *aliases;
386 unsigned int n_free_mmu_pages;
387 unsigned int n_requested_mmu_pages;
388 unsigned int n_alloc_mmu_pages;
389 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
391 * Hash table of struct kvm_mmu_page.
393 struct list_head active_mmu_pages;
394 struct list_head assigned_dev_head;
395 struct iommu_domain *iommu_domain;
396 int iommu_flags;
397 struct kvm_pic *vpic;
398 struct kvm_ioapic *vioapic;
399 struct kvm_pit *vpit;
400 int vapics_in_nmi_mode;
402 unsigned int tss_addr;
403 struct page *apic_access_page;
405 gpa_t wall_clock;
407 struct page *ept_identity_pagetable;
408 bool ept_identity_pagetable_done;
409 gpa_t ept_identity_map_addr;
411 unsigned long irq_sources_bitmap;
412 u64 vm_init_tsc;
413 s64 kvmclock_offset;
415 struct kvm_xen_hvm_config xen_hvm_config;
418 struct kvm_vm_stat {
419 u32 mmu_shadow_zapped;
420 u32 mmu_pte_write;
421 u32 mmu_pte_updated;
422 u32 mmu_pde_zapped;
423 u32 mmu_flooded;
424 u32 mmu_recycled;
425 u32 mmu_cache_miss;
426 u32 mmu_unsync;
427 u32 remote_tlb_flush;
428 u32 lpages;
431 struct kvm_vcpu_stat {
432 u32 pf_fixed;
433 u32 pf_guest;
434 u32 tlb_flush;
435 u32 invlpg;
437 u32 exits;
438 u32 io_exits;
439 u32 mmio_exits;
440 u32 signal_exits;
441 u32 irq_window_exits;
442 u32 nmi_window_exits;
443 u32 halt_exits;
444 u32 halt_wakeup;
445 u32 request_irq_exits;
446 u32 irq_exits;
447 u32 host_state_reload;
448 u32 efer_reload;
449 u32 fpu_reload;
450 u32 insn_emulation;
451 u32 insn_emulation_fail;
452 u32 hypercalls;
453 u32 irq_injections;
454 u32 nmi_injections;
457 struct descriptor_table {
458 u16 limit;
459 unsigned long base;
460 } __attribute__((packed));
462 struct kvm_x86_ops {
463 int (*cpu_has_kvm_support)(void); /* __init */
464 int (*disabled_by_bios)(void); /* __init */
465 int (*hardware_enable)(void *dummy);
466 void (*hardware_disable)(void *dummy);
467 void (*check_processor_compatibility)(void *rtn);
468 int (*hardware_setup)(void); /* __init */
469 void (*hardware_unsetup)(void); /* __exit */
470 bool (*cpu_has_accelerated_tpr)(void);
471 void (*cpuid_update)(struct kvm_vcpu *vcpu);
473 /* Create, but do not attach this VCPU */
474 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
475 void (*vcpu_free)(struct kvm_vcpu *vcpu);
476 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
478 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
479 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
480 void (*vcpu_put)(struct kvm_vcpu *vcpu);
482 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
483 struct kvm_guest_debug *dbg);
484 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
485 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
486 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
487 void (*get_segment)(struct kvm_vcpu *vcpu,
488 struct kvm_segment *var, int seg);
489 int (*get_cpl)(struct kvm_vcpu *vcpu);
490 void (*set_segment)(struct kvm_vcpu *vcpu,
491 struct kvm_segment *var, int seg);
492 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
493 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
494 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
495 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
496 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
497 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
498 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
499 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
500 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
501 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
502 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
503 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
504 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
505 int *exception);
506 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
507 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
508 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
510 void (*tlb_flush)(struct kvm_vcpu *vcpu);
512 void (*run)(struct kvm_vcpu *vcpu);
513 int (*handle_exit)(struct kvm_vcpu *vcpu);
514 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
515 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
516 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
517 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
518 unsigned char *hypercall_addr);
519 void (*set_irq)(struct kvm_vcpu *vcpu);
520 void (*set_nmi)(struct kvm_vcpu *vcpu);
521 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
522 bool has_error_code, u32 error_code);
523 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
524 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
525 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
526 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
527 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
528 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
529 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
530 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
531 int (*get_tdp_level)(void);
532 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
533 int (*get_lpage_level)(void);
534 bool (*rdtscp_supported)(void);
536 const struct trace_print_flags *exit_reasons_str;
539 extern struct kvm_x86_ops *kvm_x86_ops;
541 int kvm_mmu_module_init(void);
542 void kvm_mmu_module_exit(void);
544 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
545 int kvm_mmu_create(struct kvm_vcpu *vcpu);
546 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
547 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
548 void kvm_mmu_set_base_ptes(u64 base_pte);
549 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
550 u64 dirty_mask, u64 nx_mask, u64 x_mask);
552 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
553 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
554 void kvm_mmu_zap_all(struct kvm *kvm);
555 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
556 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
558 int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
560 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
561 const void *val, int bytes);
562 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
563 gpa_t addr, unsigned long *ret);
564 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
566 extern bool tdp_enabled;
568 enum emulation_result {
569 EMULATE_DONE, /* no further processing */
570 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
571 EMULATE_FAIL, /* can't emulate this instruction */
574 #define EMULTYPE_NO_DECODE (1 << 0)
575 #define EMULTYPE_TRAP_UD (1 << 1)
576 #define EMULTYPE_SKIP (1 << 2)
577 int emulate_instruction(struct kvm_vcpu *vcpu,
578 unsigned long cr2, u16 error_code, int emulation_type);
579 void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
580 void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
581 void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
582 void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
583 unsigned long *rflags);
585 unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
586 void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
587 unsigned long *rflags);
588 void kvm_enable_efer_bits(u64);
589 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
590 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
592 struct x86_emulate_ctxt;
594 int kvm_emulate_pio(struct kvm_vcpu *vcpu, int in,
595 int size, unsigned port);
596 int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, int in,
597 int size, unsigned long count, int down,
598 gva_t address, int rep, unsigned port);
599 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
600 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
601 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
602 int emulate_clts(struct kvm_vcpu *vcpu);
603 int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
604 unsigned long *dest);
605 int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
606 unsigned long value);
608 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
609 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector,
610 int type_bits, int seg);
612 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason);
614 void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
615 void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
616 void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
617 void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
618 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
619 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
620 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
622 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
623 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
625 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
626 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
628 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
629 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
630 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
631 u32 error_code);
632 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
634 int kvm_pic_set_irq(void *opaque, int irq, int level);
636 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
638 void fx_init(struct kvm_vcpu *vcpu);
640 int emulator_write_emulated(unsigned long addr,
641 const void *val,
642 unsigned int bytes,
643 struct kvm_vcpu *vcpu);
645 unsigned long segment_base(u16 selector);
647 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
648 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
649 const u8 *new, int bytes,
650 bool guest_initiated);
651 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
652 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
653 int kvm_mmu_load(struct kvm_vcpu *vcpu);
654 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
655 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
657 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
659 int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
661 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
662 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
664 void kvm_enable_tdp(void);
665 void kvm_disable_tdp(void);
667 int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
668 int complete_pio(struct kvm_vcpu *vcpu);
670 struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn);
672 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
674 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
676 return (struct kvm_mmu_page *)page_private(page);
679 static inline u16 kvm_read_fs(void)
681 u16 seg;
682 asm("mov %%fs, %0" : "=g"(seg));
683 return seg;
686 static inline u16 kvm_read_gs(void)
688 u16 seg;
689 asm("mov %%gs, %0" : "=g"(seg));
690 return seg;
693 static inline u16 kvm_read_ldt(void)
695 u16 ldt;
696 asm("sldt %0" : "=g"(ldt));
697 return ldt;
700 static inline void kvm_load_fs(u16 sel)
702 asm("mov %0, %%fs" : : "rm"(sel));
705 static inline void kvm_load_gs(u16 sel)
707 asm("mov %0, %%gs" : : "rm"(sel));
710 static inline void kvm_load_ldt(u16 sel)
712 asm("lldt %0" : : "rm"(sel));
715 static inline void kvm_get_idt(struct descriptor_table *table)
717 asm("sidt %0" : "=m"(*table));
720 static inline void kvm_get_gdt(struct descriptor_table *table)
722 asm("sgdt %0" : "=m"(*table));
725 static inline unsigned long kvm_read_tr_base(void)
727 u16 tr;
728 asm("str %0" : "=g"(tr));
729 return segment_base(tr);
732 #ifdef CONFIG_X86_64
733 static inline unsigned long read_msr(unsigned long msr)
735 u64 value;
737 rdmsrl(msr, value);
738 return value;
740 #endif
742 static inline void kvm_fx_save(struct i387_fxsave_struct *image)
744 asm("fxsave (%0)":: "r" (image));
747 static inline void kvm_fx_restore(struct i387_fxsave_struct *image)
749 asm("fxrstor (%0)":: "r" (image));
752 static inline void kvm_fx_finit(void)
754 asm("finit");
757 static inline u32 get_rdx_init_val(void)
759 return 0x600; /* P6 family */
762 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
764 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
767 #define TSS_IOPB_BASE_OFFSET 0x66
768 #define TSS_BASE_SIZE 0x68
769 #define TSS_IOPB_SIZE (65536 / 8)
770 #define TSS_REDIRECTION_SIZE (256 / 8)
771 #define RMODE_TSS_SIZE \
772 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
774 enum {
775 TASK_SWITCH_CALL = 0,
776 TASK_SWITCH_IRET = 1,
777 TASK_SWITCH_JMP = 2,
778 TASK_SWITCH_GATE = 3,
781 #define HF_GIF_MASK (1 << 0)
782 #define HF_HIF_MASK (1 << 1)
783 #define HF_VINTR_MASK (1 << 2)
784 #define HF_NMI_MASK (1 << 3)
785 #define HF_IRET_MASK (1 << 4)
788 * Hardware virtualization extension instructions may fault if a
789 * reboot turns off virtualization while processes are running.
790 * Trap the fault and ignore the instruction if that happens.
792 asmlinkage void kvm_handle_fault_on_reboot(void);
794 #define __kvm_handle_fault_on_reboot(insn) \
795 "666: " insn "\n\t" \
796 ".pushsection .fixup, \"ax\" \n" \
797 "667: \n\t" \
798 __ASM_SIZE(push) " $666b \n\t" \
799 "jmp kvm_handle_fault_on_reboot \n\t" \
800 ".popsection \n\t" \
801 ".pushsection __ex_table, \"a\" \n\t" \
802 _ASM_PTR " 666b, 667b \n\t" \
803 ".popsection"
805 #define KVM_ARCH_WANT_MMU_NOTIFIER
806 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
807 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
808 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
809 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
810 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
811 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
812 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
814 void kvm_define_shared_msr(unsigned index, u32 msr);
815 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
817 #endif /* _ASM_X86_KVM_HOST_H */