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>
19 #include <linux/irq_work.h>
21 #include <linux/kvm.h>
22 #include <linux/kvm_para.h>
23 #include <linux/kvm_types.h>
24 #include <linux/perf_event.h>
25 #include <linux/pvclock_gtod.h>
26 #include <linux/clocksource.h>
28 #include <asm/pvclock-abi.h>
31 #include <asm/msr-index.h>
34 #define KVM_MAX_VCPUS 254
35 #define KVM_SOFT_MAX_VCPUS 160
36 #define KVM_USER_MEM_SLOTS 125
37 /* memory slots that are not exposed to userspace */
38 #define KVM_PRIVATE_MEM_SLOTS 3
39 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
41 #define KVM_MMIO_SIZE 16
43 #define KVM_PIO_PAGE_OFFSET 1
44 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
46 #define CR0_RESERVED_BITS \
47 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
48 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
49 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
51 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
52 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
53 #define CR3_PCID_ENABLED_RESERVED_BITS 0xFFFFFF0000000000ULL
54 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
55 0xFFFFFF0000000000ULL)
56 #define CR4_RESERVED_BITS \
57 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
58 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
59 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
60 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
61 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
63 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
67 #define INVALID_PAGE (~(hpa_t)0)
68 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
70 #define UNMAPPED_GVA (~(gpa_t)0)
72 /* KVM Hugepage definitions for x86 */
73 #define KVM_NR_PAGE_SIZES 3
74 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
75 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
76 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
77 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
78 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
80 #define SELECTOR_TI_MASK (1 << 2)
81 #define SELECTOR_RPL_MASK 0x03
85 #define KVM_PERMILLE_MMU_PAGES 20
86 #define KVM_MIN_ALLOC_MMU_PAGES 64
87 #define KVM_MMU_HASH_SHIFT 10
88 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
89 #define KVM_MIN_FREE_MMU_PAGES 5
90 #define KVM_REFILL_PAGES 25
91 #define KVM_MAX_CPUID_ENTRIES 80
92 #define KVM_NR_FIXED_MTRR_REGION 88
93 #define KVM_NR_VAR_MTRR 8
95 #define ASYNC_PF_PER_VCPU 64
97 extern raw_spinlock_t kvm_lock;
98 extern struct list_head vm_list;
128 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
146 #include <asm/kvm_emulate.h>
148 #define KVM_NR_MEM_OBJS 40
150 #define KVM_NR_DB_REGS 4
152 #define DR6_BD (1 << 13)
153 #define DR6_BS (1 << 14)
154 #define DR6_FIXED_1 0xffff0ff0
155 #define DR6_VOLATILE 0x0000e00f
157 #define DR7_BP_EN_MASK 0x000000ff
158 #define DR7_GE (1 << 9)
159 #define DR7_GD (1 << 13)
160 #define DR7_FIXED_1 0x00000400
161 #define DR7_VOLATILE 0xffff23ff
163 /* apic attention bits */
164 #define KVM_APIC_CHECK_VAPIC 0
166 * The following bit is set with PV-EOI, unset on EOI.
167 * We detect PV-EOI changes by guest by comparing
168 * this bit with PV-EOI in guest memory.
169 * See the implementation in apic_update_pv_eoi.
171 #define KVM_APIC_PV_EOI_PENDING 1
174 * We don't want allocation failures within the mmu code, so we preallocate
175 * enough memory for a single page fault in a cache.
177 struct kvm_mmu_memory_cache {
179 void *objects[KVM_NR_MEM_OBJS];
183 * kvm_mmu_page_role, below, is defined as:
185 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
186 * bits 4:7 - page table level for this shadow (1-4)
187 * bits 8:9 - page table quadrant for 2-level guests
188 * bit 16 - direct mapping of virtual to physical mapping at gfn
189 * used for real mode and two-dimensional paging
190 * bits 17:19 - common access permissions for all ptes in this shadow page
192 union kvm_mmu_page_role {
198 unsigned pad_for_nice_hex_output:6;
204 unsigned smep_andnot_wp:1;
208 struct kvm_mmu_page {
209 struct list_head link;
210 struct hlist_node hash_link;
213 * The following two entries are used to key the shadow page in the
217 union kvm_mmu_page_role role;
220 /* hold the gfn of each spte inside spt */
223 int root_count; /* Currently serving as active root */
224 unsigned int unsync_children;
225 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
226 DECLARE_BITMAP(unsync_child_bitmap, 512);
229 int clear_spte_count;
232 int write_flooding_count;
236 struct kvm_pio_request {
244 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
245 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
249 void (*new_cr3)(struct kvm_vcpu *vcpu);
250 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
251 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
252 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
253 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
255 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
256 struct x86_exception *fault);
257 void (*free)(struct kvm_vcpu *vcpu);
258 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
259 struct x86_exception *exception);
260 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
261 int (*sync_page)(struct kvm_vcpu *vcpu,
262 struct kvm_mmu_page *sp);
263 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
264 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
265 u64 *spte, const void *pte);
268 int shadow_root_level;
269 union kvm_mmu_page_role base_role;
273 * Bitmap; bit set = permission fault
274 * Byte index: page fault error code [4:1]
275 * Bit index: pte permissions in ACC_* format
281 u64 rsvd_bits_mask[2][4];
284 * Bitmap: bit set = last pte in walk
285 * index[0:1]: level (zero-based)
292 u64 pdptrs[4]; /* pae */
305 struct perf_event *perf_event;
306 struct kvm_vcpu *vcpu;
310 unsigned nr_arch_gp_counters;
311 unsigned nr_arch_fixed_counters;
312 unsigned available_event_types;
317 u64 counter_bitmask[2];
318 u64 global_ctrl_mask;
320 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
321 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
322 struct irq_work irq_work;
326 struct kvm_vcpu_arch {
328 * rip and regs accesses must go through
329 * kvm_{register,rip}_{read,write} functions.
331 unsigned long regs[NR_VCPU_REGS];
336 unsigned long cr0_guest_owned_bits;
340 unsigned long cr4_guest_owned_bits;
345 struct kvm_lapic *apic; /* kernel irqchip context */
346 unsigned long apic_attention;
347 int32_t apic_arb_prio;
349 u64 ia32_misc_enable_msr;
350 bool tpr_access_reporting;
353 * Paging state of the vcpu
355 * If the vcpu runs in guest mode with two level paging this still saves
356 * the paging mode of the l1 guest. This context is always used to
362 * Paging state of an L2 guest (used for nested npt)
364 * This context will save all necessary information to walk page tables
365 * of the an L2 guest. This context is only initialized for page table
366 * walking and not for faulting since we never handle l2 page faults on
369 struct kvm_mmu nested_mmu;
372 * Pointer to the mmu context currently used for
373 * gva_to_gpa translations.
375 struct kvm_mmu *walk_mmu;
377 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
378 struct kvm_mmu_memory_cache mmu_page_cache;
379 struct kvm_mmu_memory_cache mmu_page_header_cache;
381 struct fpu guest_fpu;
384 struct kvm_pio_request pio;
387 u8 event_exit_inst_len;
389 struct kvm_queued_exception {
397 struct kvm_queued_interrupt {
403 int halt_request; /* real mode on Intel only */
406 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
407 /* emulate context */
409 struct x86_emulate_ctxt emulate_ctxt;
410 bool emulate_regs_need_sync_to_vcpu;
411 bool emulate_regs_need_sync_from_vcpu;
412 int (*complete_userspace_io)(struct kvm_vcpu *vcpu);
415 struct pvclock_vcpu_time_info hv_clock;
416 unsigned int hw_tsc_khz;
417 struct gfn_to_hva_cache pv_time;
418 bool pv_time_enabled;
419 /* set guest stopped flag in pvclock flags field */
420 bool pvclock_set_guest_stopped_request;
426 struct gfn_to_hva_cache stime;
427 struct kvm_steal_time steal;
433 u64 tsc_offset_adjustment;
436 u8 this_tsc_generation;
438 bool tsc_always_catchup;
439 s8 virtual_tsc_shift;
440 u32 virtual_tsc_mult;
442 s64 ia32_tsc_adjust_msr;
444 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
445 unsigned nmi_pending; /* NMI queued after currently running handler */
446 bool nmi_injected; /* Trying to inject an NMI this entry */
448 struct mtrr_state_type mtrr_state;
452 unsigned long db[KVM_NR_DB_REGS];
455 unsigned long eff_db[KVM_NR_DB_REGS];
456 unsigned long guest_debug_dr7;
463 /* Cache MMIO info */
470 /* used for guest single stepping over the given code position */
471 unsigned long singlestep_rip;
473 /* fields used by HYPER-V emulation */
476 cpumask_var_t wbinvd_dirty_mask;
478 unsigned long last_retry_eip;
479 unsigned long last_retry_addr;
483 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
484 struct gfn_to_hva_cache data;
490 /* OSVW MSRs (AMD only) */
498 struct gfn_to_hva_cache data;
502 * Indicate whether the access faults on its page table in guest
503 * which is set when fix page fault and used to detect unhandeable
506 bool write_fault_to_shadow_pgtable;
509 struct kvm_lpage_info {
513 struct kvm_arch_memory_slot {
514 unsigned long *rmap[KVM_NR_PAGE_SIZES];
515 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
518 struct kvm_apic_map {
521 /* fields bellow are used to decode ldr values in different modes */
522 u32 cid_shift, cid_mask, lid_mask;
523 struct kvm_lapic *phys_map[256];
524 /* first index is cluster id second is cpu id in a cluster */
525 struct kvm_lapic *logical_map[16][16];
529 unsigned int n_used_mmu_pages;
530 unsigned int n_requested_mmu_pages;
531 unsigned int n_max_mmu_pages;
532 unsigned int indirect_shadow_pages;
533 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
535 * Hash table of struct kvm_mmu_page.
537 struct list_head active_mmu_pages;
538 struct list_head assigned_dev_head;
539 struct iommu_domain *iommu_domain;
541 struct kvm_pic *vpic;
542 struct kvm_ioapic *vioapic;
543 struct kvm_pit *vpit;
544 int vapics_in_nmi_mode;
545 struct mutex apic_map_lock;
546 struct kvm_apic_map *apic_map;
548 unsigned int tss_addr;
549 struct page *apic_access_page;
553 struct page *ept_identity_pagetable;
554 bool ept_identity_pagetable_done;
555 gpa_t ept_identity_map_addr;
557 unsigned long irq_sources_bitmap;
559 raw_spinlock_t tsc_write_lock;
566 u8 cur_tsc_generation;
567 int nr_vcpus_matched_tsc;
569 spinlock_t pvclock_gtod_sync_lock;
570 bool use_master_clock;
571 u64 master_kernel_ns;
572 cycle_t master_cycle_now;
574 struct kvm_xen_hvm_config xen_hvm_config;
576 /* fields used by HYPER-V emulation */
580 #ifdef CONFIG_KVM_MMU_AUDIT
586 u32 mmu_shadow_zapped;
594 u32 remote_tlb_flush;
598 struct kvm_vcpu_stat {
608 u32 irq_window_exits;
609 u32 nmi_window_exits;
612 u32 request_irq_exits;
614 u32 host_state_reload;
618 u32 insn_emulation_fail;
624 struct x86_instruction_info;
633 int (*cpu_has_kvm_support)(void); /* __init */
634 int (*disabled_by_bios)(void); /* __init */
635 int (*hardware_enable)(void *dummy);
636 void (*hardware_disable)(void *dummy);
637 void (*check_processor_compatibility)(void *rtn);
638 int (*hardware_setup)(void); /* __init */
639 void (*hardware_unsetup)(void); /* __exit */
640 bool (*cpu_has_accelerated_tpr)(void);
641 void (*cpuid_update)(struct kvm_vcpu *vcpu);
643 /* Create, but do not attach this VCPU */
644 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
645 void (*vcpu_free)(struct kvm_vcpu *vcpu);
646 void (*vcpu_reset)(struct kvm_vcpu *vcpu);
648 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
649 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
650 void (*vcpu_put)(struct kvm_vcpu *vcpu);
652 void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu);
653 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
654 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
655 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
656 void (*get_segment)(struct kvm_vcpu *vcpu,
657 struct kvm_segment *var, int seg);
658 int (*get_cpl)(struct kvm_vcpu *vcpu);
659 void (*set_segment)(struct kvm_vcpu *vcpu,
660 struct kvm_segment *var, int seg);
661 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
662 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
663 void (*decache_cr3)(struct kvm_vcpu *vcpu);
664 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
665 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
666 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
667 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
668 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
669 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
670 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
671 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
672 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
673 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
674 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
675 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
676 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
677 void (*fpu_activate)(struct kvm_vcpu *vcpu);
678 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
680 void (*tlb_flush)(struct kvm_vcpu *vcpu);
682 void (*run)(struct kvm_vcpu *vcpu);
683 int (*handle_exit)(struct kvm_vcpu *vcpu);
684 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
685 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
686 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
687 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
688 unsigned char *hypercall_addr);
689 void (*set_irq)(struct kvm_vcpu *vcpu);
690 void (*set_nmi)(struct kvm_vcpu *vcpu);
691 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
692 bool has_error_code, u32 error_code,
694 void (*cancel_injection)(struct kvm_vcpu *vcpu);
695 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
696 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
697 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
698 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
699 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
700 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
701 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
702 int (*vm_has_apicv)(struct kvm *kvm);
703 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
704 void (*hwapic_isr_update)(struct kvm *kvm, int isr);
705 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
706 void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set);
707 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
708 int (*get_tdp_level)(void);
709 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
710 int (*get_lpage_level)(void);
711 bool (*rdtscp_supported)(void);
712 bool (*invpcid_supported)(void);
713 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
715 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
717 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
719 bool (*has_wbinvd_exit)(void);
721 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
722 u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu);
723 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
725 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
726 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc);
728 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
730 int (*check_intercept)(struct kvm_vcpu *vcpu,
731 struct x86_instruction_info *info,
732 enum x86_intercept_stage stage);
735 struct kvm_arch_async_pf {
742 extern struct kvm_x86_ops *kvm_x86_ops;
744 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
747 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
750 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
752 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
755 int kvm_mmu_module_init(void);
756 void kvm_mmu_module_exit(void);
758 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
759 int kvm_mmu_create(struct kvm_vcpu *vcpu);
760 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
761 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
762 u64 dirty_mask, u64 nx_mask, u64 x_mask);
764 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
765 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
766 void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
767 struct kvm_memory_slot *slot,
768 gfn_t gfn_offset, unsigned long mask);
769 void kvm_mmu_zap_all(struct kvm *kvm);
770 void kvm_mmu_zap_mmio_sptes(struct kvm *kvm);
771 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
772 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
774 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
776 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
777 const void *val, int bytes);
778 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
780 extern bool tdp_enabled;
782 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
784 /* control of guest tsc rate supported? */
785 extern bool kvm_has_tsc_control;
786 /* minimum supported tsc_khz for guests */
787 extern u32 kvm_min_guest_tsc_khz;
788 /* maximum supported tsc_khz for guests */
789 extern u32 kvm_max_guest_tsc_khz;
791 enum emulation_result {
792 EMULATE_DONE, /* no further processing */
793 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
794 EMULATE_FAIL, /* can't emulate this instruction */
797 #define EMULTYPE_NO_DECODE (1 << 0)
798 #define EMULTYPE_TRAP_UD (1 << 1)
799 #define EMULTYPE_SKIP (1 << 2)
800 #define EMULTYPE_RETRY (1 << 3)
801 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
802 int emulation_type, void *insn, int insn_len);
804 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
807 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
810 void kvm_enable_efer_bits(u64);
811 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
812 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
814 struct x86_emulate_ctxt;
816 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
817 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
818 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
819 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
821 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
822 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
823 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, unsigned int vector);
825 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
826 int reason, bool has_error_code, u32 error_code);
828 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
829 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
830 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
831 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
832 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
833 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
834 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
835 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
836 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
837 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
839 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
840 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
842 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
843 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
844 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
846 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
847 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
848 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
849 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
850 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
851 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
852 gfn_t gfn, void *data, int offset, int len,
854 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
855 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
857 static inline int __kvm_irq_line_state(unsigned long *irq_state,
858 int irq_source_id, int level)
860 /* Logical OR for level trig interrupt */
862 __set_bit(irq_source_id, irq_state);
864 __clear_bit(irq_source_id, irq_state);
866 return !!(*irq_state);
869 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
870 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
872 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
874 int fx_init(struct kvm_vcpu *vcpu);
876 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
877 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
878 const u8 *new, int bytes);
879 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
880 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
881 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
882 int kvm_mmu_load(struct kvm_vcpu *vcpu);
883 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
884 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
885 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
886 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
887 struct x86_exception *exception);
888 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
889 struct x86_exception *exception);
890 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
891 struct x86_exception *exception);
892 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
893 struct x86_exception *exception);
895 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
897 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
898 void *insn, int insn_len);
899 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
901 void kvm_enable_tdp(void);
902 void kvm_disable_tdp(void);
904 int complete_pio(struct kvm_vcpu *vcpu);
905 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
907 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
912 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
914 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
916 return (struct kvm_mmu_page *)page_private(page);
919 static inline u16 kvm_read_ldt(void)
922 asm("sldt %0" : "=g"(ldt));
926 static inline void kvm_load_ldt(u16 sel)
928 asm("lldt %0" : : "rm"(sel));
932 static inline unsigned long read_msr(unsigned long msr)
941 static inline u32 get_rdx_init_val(void)
943 return 0x600; /* P6 family */
946 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
948 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
951 #define TSS_IOPB_BASE_OFFSET 0x66
952 #define TSS_BASE_SIZE 0x68
953 #define TSS_IOPB_SIZE (65536 / 8)
954 #define TSS_REDIRECTION_SIZE (256 / 8)
955 #define RMODE_TSS_SIZE \
956 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
959 TASK_SWITCH_CALL = 0,
960 TASK_SWITCH_IRET = 1,
962 TASK_SWITCH_GATE = 3,
965 #define HF_GIF_MASK (1 << 0)
966 #define HF_HIF_MASK (1 << 1)
967 #define HF_VINTR_MASK (1 << 2)
968 #define HF_NMI_MASK (1 << 3)
969 #define HF_IRET_MASK (1 << 4)
970 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
973 * Hardware virtualization extension instructions may fault if a
974 * reboot turns off virtualization while processes are running.
975 * Trap the fault and ignore the instruction if that happens.
977 asmlinkage void kvm_spurious_fault(void);
978 extern bool kvm_rebooting;
980 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
981 "666: " insn "\n\t" \
983 ".pushsection .fixup, \"ax\" \n" \
985 cleanup_insn "\n\t" \
986 "cmpb $0, kvm_rebooting \n\t" \
988 __ASM_SIZE(push) " $666b \n\t" \
989 "call kvm_spurious_fault \n\t" \
991 _ASM_EXTABLE(666b, 667b)
993 #define __kvm_handle_fault_on_reboot(insn) \
994 ____kvm_handle_fault_on_reboot(insn, "")
996 #define KVM_ARCH_WANT_MMU_NOTIFIER
997 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
998 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
999 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
1000 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
1001 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
1002 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
1003 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v);
1004 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
1005 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
1006 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
1007 void kvm_vcpu_reset(struct kvm_vcpu *vcpu);
1009 void kvm_define_shared_msr(unsigned index, u32 msr);
1010 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
1012 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
1014 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1015 struct kvm_async_pf *work);
1016 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1017 struct kvm_async_pf *work);
1018 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1019 struct kvm_async_pf *work);
1020 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
1021 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
1023 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
1025 int kvm_is_in_guest(void);
1027 void kvm_pmu_init(struct kvm_vcpu *vcpu);
1028 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
1029 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
1030 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
1031 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
1032 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
1033 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
1034 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
1035 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
1036 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
1038 #endif /* _ASM_X86_KVM_HOST_H */