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
34 #define KVM_PIO_PAGE_OFFSET 1
35 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
37 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
38 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
39 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
40 0xFFFFFF0000000000ULL)
42 #define INVALID_PAGE (~(hpa_t)0)
43 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
45 #define UNMAPPED_GVA (~(gpa_t)0)
47 /* KVM Hugepage definitions for x86 */
48 #define KVM_NR_PAGE_SIZES 3
49 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
50 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
51 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
52 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
53 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
71 #define SELECTOR_TI_MASK (1 << 2)
72 #define SELECTOR_RPL_MASK 0x03
76 #define KVM_PERMILLE_MMU_PAGES 20
77 #define KVM_MIN_ALLOC_MMU_PAGES 64
78 #define KVM_MMU_HASH_SHIFT 10
79 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
80 #define KVM_MIN_FREE_MMU_PAGES 5
81 #define KVM_REFILL_PAGES 25
82 #define KVM_MAX_CPUID_ENTRIES 80
83 #define KVM_NR_FIXED_MTRR_REGION 88
84 #define KVM_NR_VAR_MTRR 8
86 #define ASYNC_PF_PER_VCPU 64
88 extern raw_spinlock_t kvm_lock;
89 extern struct list_head vm_list;
119 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
135 #include <asm/kvm_emulate.h>
137 #define KVM_NR_MEM_OBJS 40
139 #define KVM_NR_DB_REGS 4
141 #define DR6_BD (1 << 13)
142 #define DR6_BS (1 << 14)
143 #define DR6_FIXED_1 0xffff0ff0
144 #define DR6_VOLATILE 0x0000e00f
146 #define DR7_BP_EN_MASK 0x000000ff
147 #define DR7_GE (1 << 9)
148 #define DR7_GD (1 << 13)
149 #define DR7_FIXED_1 0x00000400
150 #define DR7_VOLATILE 0xffff23ff
153 * We don't want allocation failures within the mmu code, so we preallocate
154 * enough memory for a single page fault in a cache.
156 struct kvm_mmu_memory_cache {
158 void *objects[KVM_NR_MEM_OBJS];
161 #define NR_PTE_CHAIN_ENTRIES 5
163 struct kvm_pte_chain {
164 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
165 struct hlist_node link;
169 * kvm_mmu_page_role, below, is defined as:
171 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
172 * bits 4:7 - page table level for this shadow (1-4)
173 * bits 8:9 - page table quadrant for 2-level guests
174 * bit 16 - direct mapping of virtual to physical mapping at gfn
175 * used for real mode and two-dimensional paging
176 * bits 17:19 - common access permissions for all ptes in this shadow page
178 union kvm_mmu_page_role {
184 unsigned pad_for_nice_hex_output:6;
193 struct kvm_mmu_page {
194 struct list_head link;
195 struct hlist_node hash_link;
198 * The following two entries are used to key the shadow page in the
202 union kvm_mmu_page_role role;
205 /* hold the gfn of each spte inside spt */
208 * One bit set per slot which has memory
209 * in this shadow page.
211 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
212 bool multimapped; /* More than one parent_pte? */
214 int root_count; /* Currently serving as active root */
215 unsigned int unsync_children;
217 u64 *parent_pte; /* !multimapped */
218 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
220 DECLARE_BITMAP(unsync_child_bitmap, 512);
223 struct kvm_pv_mmu_op_buffer {
227 char buf[512] __aligned(sizeof(long));
230 struct kvm_pio_request {
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
243 void (*new_cr3)(struct kvm_vcpu *vcpu);
244 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
245 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
246 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
248 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
249 struct x86_exception *fault);
250 void (*free)(struct kvm_vcpu *vcpu);
251 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
252 struct x86_exception *exception);
253 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
254 void (*prefetch_page)(struct kvm_vcpu *vcpu,
255 struct kvm_mmu_page *page);
256 int (*sync_page)(struct kvm_vcpu *vcpu,
257 struct kvm_mmu_page *sp);
258 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
259 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
260 u64 *spte, const void *pte, unsigned long mmu_seq);
263 int shadow_root_level;
264 union kvm_mmu_page_role base_role;
269 u64 rsvd_bits_mask[2][4];
273 u64 pdptrs[4]; /* pae */
276 struct kvm_vcpu_arch {
278 * rip and regs accesses must go through
279 * kvm_{register,rip}_{read,write} functions.
281 unsigned long regs[NR_VCPU_REGS];
286 unsigned long cr0_guest_owned_bits;
290 unsigned long cr4_guest_owned_bits;
295 struct kvm_lapic *apic; /* kernel irqchip context */
296 int32_t apic_arb_prio;
299 u64 ia32_misc_enable_msr;
300 bool tpr_access_reporting;
303 * Paging state of the vcpu
305 * If the vcpu runs in guest mode with two level paging this still saves
306 * the paging mode of the l1 guest. This context is always used to
312 * Paging state of an L2 guest (used for nested npt)
314 * This context will save all necessary information to walk page tables
315 * of the an L2 guest. This context is only initialized for page table
316 * walking and not for faulting since we never handle l2 page faults on
319 struct kvm_mmu nested_mmu;
322 * Pointer to the mmu context currently used for
323 * gva_to_gpa translations.
325 struct kvm_mmu *walk_mmu;
327 /* only needed in kvm_pv_mmu_op() path, but it's hot so
328 * put it here to avoid allocation */
329 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
331 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
332 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
333 struct kvm_mmu_memory_cache mmu_page_cache;
334 struct kvm_mmu_memory_cache mmu_page_header_cache;
336 gfn_t last_pt_write_gfn;
337 int last_pt_write_count;
338 u64 *last_pte_updated;
341 struct fpu guest_fpu;
344 gva_t mmio_fault_cr2;
345 struct kvm_pio_request pio;
348 u8 event_exit_inst_len;
350 struct kvm_queued_exception {
358 struct kvm_queued_interrupt {
364 int halt_request; /* real mode on Intel only */
367 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
368 /* emulate context */
370 struct x86_emulate_ctxt emulate_ctxt;
373 struct pvclock_vcpu_time_info hv_clock;
374 unsigned int hw_tsc_khz;
375 unsigned int time_offset;
376 struct page *time_page;
387 struct mtrr_state_type mtrr_state;
391 unsigned long db[KVM_NR_DB_REGS];
394 unsigned long eff_db[KVM_NR_DB_REGS];
401 /* used for guest single stepping over the given code position */
402 unsigned long singlestep_rip;
404 /* fields used by HYPER-V emulation */
407 cpumask_var_t wbinvd_dirty_mask;
411 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
412 struct gfn_to_hva_cache data;
420 unsigned int n_used_mmu_pages;
421 unsigned int n_requested_mmu_pages;
422 unsigned int n_max_mmu_pages;
423 atomic_t invlpg_counter;
424 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
426 * Hash table of struct kvm_mmu_page.
428 struct list_head active_mmu_pages;
429 struct list_head assigned_dev_head;
430 struct iommu_domain *iommu_domain;
432 struct kvm_pic *vpic;
433 struct kvm_ioapic *vioapic;
434 struct kvm_pit *vpit;
435 int vapics_in_nmi_mode;
437 unsigned int tss_addr;
438 struct page *apic_access_page;
442 struct page *ept_identity_pagetable;
443 bool ept_identity_pagetable_done;
444 gpa_t ept_identity_map_addr;
446 unsigned long irq_sources_bitmap;
448 raw_spinlock_t tsc_write_lock;
453 u32 virtual_tsc_mult;
454 s8 virtual_tsc_shift;
456 struct kvm_xen_hvm_config xen_hvm_config;
458 /* fields used by HYPER-V emulation */
462 #ifdef CONFIG_KVM_MMU_AUDIT
468 u32 mmu_shadow_zapped;
476 u32 remote_tlb_flush;
480 struct kvm_vcpu_stat {
490 u32 irq_window_exits;
491 u32 nmi_window_exits;
494 u32 request_irq_exits;
496 u32 host_state_reload;
500 u32 insn_emulation_fail;
507 int (*cpu_has_kvm_support)(void); /* __init */
508 int (*disabled_by_bios)(void); /* __init */
509 int (*hardware_enable)(void *dummy);
510 void (*hardware_disable)(void *dummy);
511 void (*check_processor_compatibility)(void *rtn);
512 int (*hardware_setup)(void); /* __init */
513 void (*hardware_unsetup)(void); /* __exit */
514 bool (*cpu_has_accelerated_tpr)(void);
515 void (*cpuid_update)(struct kvm_vcpu *vcpu);
517 /* Create, but do not attach this VCPU */
518 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
519 void (*vcpu_free)(struct kvm_vcpu *vcpu);
520 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
522 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
523 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
524 void (*vcpu_put)(struct kvm_vcpu *vcpu);
526 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
527 struct kvm_guest_debug *dbg);
528 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
529 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
530 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
531 void (*get_segment)(struct kvm_vcpu *vcpu,
532 struct kvm_segment *var, int seg);
533 int (*get_cpl)(struct kvm_vcpu *vcpu);
534 void (*set_segment)(struct kvm_vcpu *vcpu,
535 struct kvm_segment *var, int seg);
536 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
537 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
538 void (*decache_cr3)(struct kvm_vcpu *vcpu);
539 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
540 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
541 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
542 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
543 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
544 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
545 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
546 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
547 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
548 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
549 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
550 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
551 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
552 void (*fpu_activate)(struct kvm_vcpu *vcpu);
553 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
555 void (*tlb_flush)(struct kvm_vcpu *vcpu);
557 void (*run)(struct kvm_vcpu *vcpu);
558 int (*handle_exit)(struct kvm_vcpu *vcpu);
559 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
560 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
561 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
562 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
563 unsigned char *hypercall_addr);
564 void (*set_irq)(struct kvm_vcpu *vcpu);
565 void (*set_nmi)(struct kvm_vcpu *vcpu);
566 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
567 bool has_error_code, u32 error_code,
569 void (*cancel_injection)(struct kvm_vcpu *vcpu);
570 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
571 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
572 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
573 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
574 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
575 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
576 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
577 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
578 int (*get_tdp_level)(void);
579 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
580 int (*get_lpage_level)(void);
581 bool (*rdtscp_supported)(void);
582 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
584 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
586 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
588 bool (*has_wbinvd_exit)(void);
590 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
592 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
593 const struct trace_print_flags *exit_reasons_str;
596 struct kvm_arch_async_pf {
603 extern struct kvm_x86_ops *kvm_x86_ops;
605 int kvm_mmu_module_init(void);
606 void kvm_mmu_module_exit(void);
608 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
609 int kvm_mmu_create(struct kvm_vcpu *vcpu);
610 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
611 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
612 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
613 u64 dirty_mask, u64 nx_mask, u64 x_mask);
615 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
616 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
617 void kvm_mmu_zap_all(struct kvm *kvm);
618 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
619 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
621 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
623 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
624 const void *val, int bytes);
625 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
626 gpa_t addr, unsigned long *ret);
627 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
629 extern bool tdp_enabled;
631 enum emulation_result {
632 EMULATE_DONE, /* no further processing */
633 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
634 EMULATE_FAIL, /* can't emulate this instruction */
637 #define EMULTYPE_NO_DECODE (1 << 0)
638 #define EMULTYPE_TRAP_UD (1 << 1)
639 #define EMULTYPE_SKIP (1 << 2)
640 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
641 int emulation_type, void *insn, int insn_len);
643 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
646 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
649 void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
650 void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
652 void kvm_enable_efer_bits(u64);
653 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
654 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
656 struct x86_emulate_ctxt;
658 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
659 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
660 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
661 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
662 int emulate_clts(struct kvm_vcpu *vcpu);
663 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
665 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
666 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
668 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
669 bool has_error_code, u32 error_code);
671 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
672 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
673 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
674 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
675 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
676 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
677 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
678 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
679 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
680 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
682 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
683 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
685 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
686 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
688 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
689 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
690 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
691 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
692 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
693 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
694 gfn_t gfn, void *data, int offset, int len,
696 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
697 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
699 int kvm_pic_set_irq(void *opaque, int irq, int level);
701 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
703 int fx_init(struct kvm_vcpu *vcpu);
705 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
706 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
707 const u8 *new, int bytes,
708 bool guest_initiated);
709 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
710 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
711 int kvm_mmu_load(struct kvm_vcpu *vcpu);
712 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
713 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
714 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
715 struct x86_exception *exception);
716 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
717 struct x86_exception *exception);
718 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
719 struct x86_exception *exception);
720 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
721 struct x86_exception *exception);
723 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
725 int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
727 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
728 void *insn, int insn_len);
729 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
731 void kvm_enable_tdp(void);
732 void kvm_disable_tdp(void);
734 int complete_pio(struct kvm_vcpu *vcpu);
735 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
737 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
739 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
741 return (struct kvm_mmu_page *)page_private(page);
744 static inline u16 kvm_read_ldt(void)
747 asm("sldt %0" : "=g"(ldt));
751 static inline void kvm_load_ldt(u16 sel)
753 asm("lldt %0" : : "rm"(sel));
757 static inline unsigned long read_msr(unsigned long msr)
766 static inline u32 get_rdx_init_val(void)
768 return 0x600; /* P6 family */
771 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
773 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
776 #define TSS_IOPB_BASE_OFFSET 0x66
777 #define TSS_BASE_SIZE 0x68
778 #define TSS_IOPB_SIZE (65536 / 8)
779 #define TSS_REDIRECTION_SIZE (256 / 8)
780 #define RMODE_TSS_SIZE \
781 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
784 TASK_SWITCH_CALL = 0,
785 TASK_SWITCH_IRET = 1,
787 TASK_SWITCH_GATE = 3,
790 #define HF_GIF_MASK (1 << 0)
791 #define HF_HIF_MASK (1 << 1)
792 #define HF_VINTR_MASK (1 << 2)
793 #define HF_NMI_MASK (1 << 3)
794 #define HF_IRET_MASK (1 << 4)
795 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
798 * Hardware virtualization extension instructions may fault if a
799 * reboot turns off virtualization while processes are running.
800 * Trap the fault and ignore the instruction if that happens.
802 asmlinkage void kvm_spurious_fault(void);
803 extern bool kvm_rebooting;
805 #define __kvm_handle_fault_on_reboot(insn) \
806 "666: " insn "\n\t" \
808 ".pushsection .fixup, \"ax\" \n" \
810 "cmpb $0, kvm_rebooting \n\t" \
812 __ASM_SIZE(push) " $666b \n\t" \
813 "call kvm_spurious_fault \n\t" \
815 ".pushsection __ex_table, \"a\" \n\t" \
816 _ASM_PTR " 666b, 667b \n\t" \
819 #define KVM_ARCH_WANT_MMU_NOTIFIER
820 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
821 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
822 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
823 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
824 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
825 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
826 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
827 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
829 void kvm_define_shared_msr(unsigned index, u32 msr);
830 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
832 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
834 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
835 struct kvm_async_pf *work);
836 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
837 struct kvm_async_pf *work);
838 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
839 struct kvm_async_pf *work);
840 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
841 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
843 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
845 #endif /* _ASM_X86_KVM_HOST_H */