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.
11 #ifndef _ASM_X86_KVM_HOST_H
12 #define _ASM_X86_KVM_HOST_H
14 #include <linux/types.h>
16 #include <linux/mmu_notifier.h>
17 #include <linux/tracepoint.h>
18 #include <linux/cpumask.h>
20 #include <linux/kvm.h>
21 #include <linux/kvm_para.h>
22 #include <linux/kvm_types.h>
24 #include <asm/pvclock-abi.h>
27 #include <asm/msr-index.h>
29 #define KVM_MAX_VCPUS 64
30 #define KVM_MEMORY_SLOTS 32
31 /* memory slots that does not exposed to userspace */
32 #define KVM_PRIVATE_MEM_SLOTS 4
33 #define KVM_MMIO_SIZE 16
35 #define KVM_PIO_PAGE_OFFSET 1
36 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
38 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
39 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
40 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
41 0xFFFFFF0000000000ULL)
43 #define INVALID_PAGE (~(hpa_t)0)
44 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
46 #define UNMAPPED_GVA (~(gpa_t)0)
48 /* KVM Hugepage definitions for x86 */
49 #define KVM_NR_PAGE_SIZES 3
50 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
51 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
52 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
53 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
54 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
72 #define SELECTOR_TI_MASK (1 << 2)
73 #define SELECTOR_RPL_MASK 0x03
77 #define KVM_PERMILLE_MMU_PAGES 20
78 #define KVM_MIN_ALLOC_MMU_PAGES 64
79 #define KVM_MMU_HASH_SHIFT 10
80 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
81 #define KVM_MIN_FREE_MMU_PAGES 5
82 #define KVM_REFILL_PAGES 25
83 #define KVM_MAX_CPUID_ENTRIES 80
84 #define KVM_NR_FIXED_MTRR_REGION 88
85 #define KVM_NR_VAR_MTRR 8
87 #define ASYNC_PF_PER_VCPU 64
89 extern raw_spinlock_t kvm_lock;
90 extern struct list_head vm_list;
120 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
137 #include <asm/kvm_emulate.h>
139 #define KVM_NR_MEM_OBJS 40
141 #define KVM_NR_DB_REGS 4
143 #define DR6_BD (1 << 13)
144 #define DR6_BS (1 << 14)
145 #define DR6_FIXED_1 0xffff0ff0
146 #define DR6_VOLATILE 0x0000e00f
148 #define DR7_BP_EN_MASK 0x000000ff
149 #define DR7_GE (1 << 9)
150 #define DR7_GD (1 << 13)
151 #define DR7_FIXED_1 0x00000400
152 #define DR7_VOLATILE 0xffff23ff
155 * We don't want allocation failures within the mmu code, so we preallocate
156 * enough memory for a single page fault in a cache.
158 struct kvm_mmu_memory_cache {
160 void *objects[KVM_NR_MEM_OBJS];
163 #define NR_PTE_CHAIN_ENTRIES 5
165 struct kvm_pte_chain {
166 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
167 struct hlist_node link;
171 * kvm_mmu_page_role, below, is defined as:
173 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
174 * bits 4:7 - page table level for this shadow (1-4)
175 * bits 8:9 - page table quadrant for 2-level guests
176 * bit 16 - direct mapping of virtual to physical mapping at gfn
177 * used for real mode and two-dimensional paging
178 * bits 17:19 - common access permissions for all ptes in this shadow page
180 union kvm_mmu_page_role {
186 unsigned pad_for_nice_hex_output:6;
195 struct kvm_mmu_page {
196 struct list_head link;
197 struct hlist_node hash_link;
200 * The following two entries are used to key the shadow page in the
204 union kvm_mmu_page_role role;
207 /* hold the gfn of each spte inside spt */
210 * One bit set per slot which has memory
211 * in this shadow page.
213 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
214 bool multimapped; /* More than one parent_pte? */
216 int root_count; /* Currently serving as active root */
217 unsigned int unsync_children;
219 u64 *parent_pte; /* !multimapped */
220 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
222 DECLARE_BITMAP(unsync_child_bitmap, 512);
225 struct kvm_pv_mmu_op_buffer {
229 char buf[512] __aligned(sizeof(long));
232 struct kvm_pio_request {
240 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
241 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
245 void (*new_cr3)(struct kvm_vcpu *vcpu);
246 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
247 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
248 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
250 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
251 struct x86_exception *fault);
252 void (*free)(struct kvm_vcpu *vcpu);
253 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
254 struct x86_exception *exception);
255 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
256 void (*prefetch_page)(struct kvm_vcpu *vcpu,
257 struct kvm_mmu_page *page);
258 int (*sync_page)(struct kvm_vcpu *vcpu,
259 struct kvm_mmu_page *sp);
260 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
261 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
262 u64 *spte, const void *pte, unsigned long mmu_seq);
265 int shadow_root_level;
266 union kvm_mmu_page_role base_role;
271 u64 rsvd_bits_mask[2][4];
275 u64 pdptrs[4]; /* pae */
278 struct kvm_vcpu_arch {
280 * rip and regs accesses must go through
281 * kvm_{register,rip}_{read,write} functions.
283 unsigned long regs[NR_VCPU_REGS];
288 unsigned long cr0_guest_owned_bits;
292 unsigned long cr4_guest_owned_bits;
297 struct kvm_lapic *apic; /* kernel irqchip context */
298 int32_t apic_arb_prio;
301 u64 ia32_misc_enable_msr;
302 bool tpr_access_reporting;
305 * Paging state of the vcpu
307 * If the vcpu runs in guest mode with two level paging this still saves
308 * the paging mode of the l1 guest. This context is always used to
314 * Paging state of an L2 guest (used for nested npt)
316 * This context will save all necessary information to walk page tables
317 * of the an L2 guest. This context is only initialized for page table
318 * walking and not for faulting since we never handle l2 page faults on
321 struct kvm_mmu nested_mmu;
324 * Pointer to the mmu context currently used for
325 * gva_to_gpa translations.
327 struct kvm_mmu *walk_mmu;
329 /* only needed in kvm_pv_mmu_op() path, but it's hot so
330 * put it here to avoid allocation */
331 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
333 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
334 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
335 struct kvm_mmu_memory_cache mmu_page_cache;
336 struct kvm_mmu_memory_cache mmu_page_header_cache;
338 gfn_t last_pt_write_gfn;
339 int last_pt_write_count;
340 u64 *last_pte_updated;
343 struct fpu guest_fpu;
346 gva_t mmio_fault_cr2;
347 struct kvm_pio_request pio;
350 u8 event_exit_inst_len;
352 struct kvm_queued_exception {
360 struct kvm_queued_interrupt {
366 int halt_request; /* real mode on Intel only */
369 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
370 /* emulate context */
372 struct x86_emulate_ctxt emulate_ctxt;
375 struct pvclock_vcpu_time_info hv_clock;
376 unsigned int hw_tsc_khz;
377 unsigned int time_offset;
378 struct page *time_page;
389 struct mtrr_state_type mtrr_state;
393 unsigned long db[KVM_NR_DB_REGS];
396 unsigned long eff_db[KVM_NR_DB_REGS];
403 /* used for guest single stepping over the given code position */
404 unsigned long singlestep_rip;
406 /* fields used by HYPER-V emulation */
409 cpumask_var_t wbinvd_dirty_mask;
413 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
414 struct gfn_to_hva_cache data;
422 unsigned int n_used_mmu_pages;
423 unsigned int n_requested_mmu_pages;
424 unsigned int n_max_mmu_pages;
425 atomic_t invlpg_counter;
426 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
428 * Hash table of struct kvm_mmu_page.
430 struct list_head active_mmu_pages;
431 struct list_head assigned_dev_head;
432 struct iommu_domain *iommu_domain;
434 struct kvm_pic *vpic;
435 struct kvm_ioapic *vioapic;
436 struct kvm_pit *vpit;
437 int vapics_in_nmi_mode;
439 unsigned int tss_addr;
440 struct page *apic_access_page;
444 struct page *ept_identity_pagetable;
445 bool ept_identity_pagetable_done;
446 gpa_t ept_identity_map_addr;
448 unsigned long irq_sources_bitmap;
450 raw_spinlock_t tsc_write_lock;
455 u32 virtual_tsc_mult;
456 s8 virtual_tsc_shift;
458 struct kvm_xen_hvm_config xen_hvm_config;
460 /* fields used by HYPER-V emulation */
464 #ifdef CONFIG_KVM_MMU_AUDIT
470 u32 mmu_shadow_zapped;
478 u32 remote_tlb_flush;
482 struct kvm_vcpu_stat {
492 u32 irq_window_exits;
493 u32 nmi_window_exits;
496 u32 request_irq_exits;
498 u32 host_state_reload;
502 u32 insn_emulation_fail;
508 struct x86_instruction_info;
511 int (*cpu_has_kvm_support)(void); /* __init */
512 int (*disabled_by_bios)(void); /* __init */
513 int (*hardware_enable)(void *dummy);
514 void (*hardware_disable)(void *dummy);
515 void (*check_processor_compatibility)(void *rtn);
516 int (*hardware_setup)(void); /* __init */
517 void (*hardware_unsetup)(void); /* __exit */
518 bool (*cpu_has_accelerated_tpr)(void);
519 void (*cpuid_update)(struct kvm_vcpu *vcpu);
521 /* Create, but do not attach this VCPU */
522 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
523 void (*vcpu_free)(struct kvm_vcpu *vcpu);
524 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
526 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
527 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
528 void (*vcpu_put)(struct kvm_vcpu *vcpu);
530 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
531 struct kvm_guest_debug *dbg);
532 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
533 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
534 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
535 void (*get_segment)(struct kvm_vcpu *vcpu,
536 struct kvm_segment *var, int seg);
537 int (*get_cpl)(struct kvm_vcpu *vcpu);
538 void (*set_segment)(struct kvm_vcpu *vcpu,
539 struct kvm_segment *var, int seg);
540 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
541 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
542 void (*decache_cr3)(struct kvm_vcpu *vcpu);
543 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
544 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
545 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
546 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
547 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
548 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
549 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
550 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
551 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
552 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
553 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
554 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
555 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
556 void (*fpu_activate)(struct kvm_vcpu *vcpu);
557 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
559 void (*tlb_flush)(struct kvm_vcpu *vcpu);
561 void (*run)(struct kvm_vcpu *vcpu);
562 int (*handle_exit)(struct kvm_vcpu *vcpu);
563 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
564 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
565 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
566 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
567 unsigned char *hypercall_addr);
568 void (*set_irq)(struct kvm_vcpu *vcpu);
569 void (*set_nmi)(struct kvm_vcpu *vcpu);
570 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
571 bool has_error_code, u32 error_code,
573 void (*cancel_injection)(struct kvm_vcpu *vcpu);
574 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
575 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
576 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
577 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
578 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
579 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
580 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
581 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
582 int (*get_tdp_level)(void);
583 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
584 int (*get_lpage_level)(void);
585 bool (*rdtscp_supported)(void);
586 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
588 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
590 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
592 bool (*has_wbinvd_exit)(void);
594 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
596 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
598 int (*check_intercept)(struct kvm_vcpu *vcpu,
599 struct x86_instruction_info *info,
600 enum x86_intercept_stage stage);
602 const struct trace_print_flags *exit_reasons_str;
605 struct kvm_arch_async_pf {
612 extern struct kvm_x86_ops *kvm_x86_ops;
614 int kvm_mmu_module_init(void);
615 void kvm_mmu_module_exit(void);
617 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
618 int kvm_mmu_create(struct kvm_vcpu *vcpu);
619 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
620 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
621 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
622 u64 dirty_mask, u64 nx_mask, u64 x_mask);
624 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
625 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
626 void kvm_mmu_zap_all(struct kvm *kvm);
627 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
628 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
630 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
632 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
633 const void *val, int bytes);
634 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
635 gpa_t addr, unsigned long *ret);
636 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
638 extern bool tdp_enabled;
640 enum emulation_result {
641 EMULATE_DONE, /* no further processing */
642 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
643 EMULATE_FAIL, /* can't emulate this instruction */
646 #define EMULTYPE_NO_DECODE (1 << 0)
647 #define EMULTYPE_TRAP_UD (1 << 1)
648 #define EMULTYPE_SKIP (1 << 2)
649 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
650 int emulation_type, void *insn, int insn_len);
652 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
655 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
658 void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
659 void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
661 void kvm_enable_efer_bits(u64);
662 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
663 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
665 struct x86_emulate_ctxt;
667 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
668 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
669 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
670 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
671 int emulate_clts(struct kvm_vcpu *vcpu);
672 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
674 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
675 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
677 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
678 bool has_error_code, u32 error_code);
680 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
681 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
682 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
683 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
684 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
685 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
686 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
687 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
688 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
689 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
691 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
692 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
694 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
695 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
697 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
698 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
699 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
700 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
701 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
702 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
703 gfn_t gfn, void *data, int offset, int len,
705 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
706 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
708 int kvm_pic_set_irq(void *opaque, int irq, int level);
710 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
712 int fx_init(struct kvm_vcpu *vcpu);
714 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
715 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
716 const u8 *new, int bytes,
717 bool guest_initiated);
718 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
719 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
720 int kvm_mmu_load(struct kvm_vcpu *vcpu);
721 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
722 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
723 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
724 struct x86_exception *exception);
725 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
726 struct x86_exception *exception);
727 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
728 struct x86_exception *exception);
729 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
730 struct x86_exception *exception);
732 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
734 int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
736 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
737 void *insn, int insn_len);
738 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
740 void kvm_enable_tdp(void);
741 void kvm_disable_tdp(void);
743 int complete_pio(struct kvm_vcpu *vcpu);
744 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
746 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
748 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
750 return (struct kvm_mmu_page *)page_private(page);
753 static inline u16 kvm_read_ldt(void)
756 asm("sldt %0" : "=g"(ldt));
760 static inline void kvm_load_ldt(u16 sel)
762 asm("lldt %0" : : "rm"(sel));
766 static inline unsigned long read_msr(unsigned long msr)
775 static inline u32 get_rdx_init_val(void)
777 return 0x600; /* P6 family */
780 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
782 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
785 #define TSS_IOPB_BASE_OFFSET 0x66
786 #define TSS_BASE_SIZE 0x68
787 #define TSS_IOPB_SIZE (65536 / 8)
788 #define TSS_REDIRECTION_SIZE (256 / 8)
789 #define RMODE_TSS_SIZE \
790 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
793 TASK_SWITCH_CALL = 0,
794 TASK_SWITCH_IRET = 1,
796 TASK_SWITCH_GATE = 3,
799 #define HF_GIF_MASK (1 << 0)
800 #define HF_HIF_MASK (1 << 1)
801 #define HF_VINTR_MASK (1 << 2)
802 #define HF_NMI_MASK (1 << 3)
803 #define HF_IRET_MASK (1 << 4)
804 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
807 * Hardware virtualization extension instructions may fault if a
808 * reboot turns off virtualization while processes are running.
809 * Trap the fault and ignore the instruction if that happens.
811 asmlinkage void kvm_spurious_fault(void);
812 extern bool kvm_rebooting;
814 #define __kvm_handle_fault_on_reboot(insn) \
815 "666: " insn "\n\t" \
817 ".pushsection .fixup, \"ax\" \n" \
819 "cmpb $0, kvm_rebooting \n\t" \
821 __ASM_SIZE(push) " $666b \n\t" \
822 "call kvm_spurious_fault \n\t" \
824 ".pushsection __ex_table, \"a\" \n\t" \
825 _ASM_PTR " 666b, 667b \n\t" \
828 #define KVM_ARCH_WANT_MMU_NOTIFIER
829 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
830 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
831 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
832 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
833 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
834 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
835 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
836 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
838 void kvm_define_shared_msr(unsigned index, u32 msr);
839 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
841 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
843 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
844 struct kvm_async_pf *work);
845 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
846 struct kvm_async_pf *work);
847 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
848 struct kvm_async_pf *work);
849 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
850 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
852 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
854 #endif /* _ASM_X86_KVM_HOST_H */