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 255
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 KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS
48 #define CR0_RESERVED_BITS \
49 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
50 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
51 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
53 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
54 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
55 #define CR3_PCID_ENABLED_RESERVED_BITS 0xFFFFFF0000000000ULL
56 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
57 0xFFFFFF0000000000ULL)
58 #define CR4_RESERVED_BITS \
59 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
60 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
61 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
62 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
63 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
65 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
69 #define INVALID_PAGE (~(hpa_t)0)
70 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
72 #define UNMAPPED_GVA (~(gpa_t)0)
74 /* KVM Hugepage definitions for x86 */
75 #define KVM_NR_PAGE_SIZES 3
76 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
77 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
78 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
79 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
80 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
82 static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level)
84 /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */
85 return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) -
86 (base_gfn >> KVM_HPAGE_GFN_SHIFT(level));
89 #define SELECTOR_TI_MASK (1 << 2)
90 #define SELECTOR_RPL_MASK 0x03
94 #define KVM_PERMILLE_MMU_PAGES 20
95 #define KVM_MIN_ALLOC_MMU_PAGES 64
96 #define KVM_MMU_HASH_SHIFT 10
97 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
98 #define KVM_MIN_FREE_MMU_PAGES 5
99 #define KVM_REFILL_PAGES 25
100 #define KVM_MAX_CPUID_ENTRIES 80
101 #define KVM_NR_FIXED_MTRR_REGION 88
102 #define KVM_NR_VAR_MTRR 8
104 #define ASYNC_PF_PER_VCPU 64
130 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
148 #include <asm/kvm_emulate.h>
150 #define KVM_NR_MEM_OBJS 40
152 #define KVM_NR_DB_REGS 4
154 #define DR6_BD (1 << 13)
155 #define DR6_BS (1 << 14)
156 #define DR6_FIXED_1 0xffff0ff0
157 #define DR6_VOLATILE 0x0000e00f
159 #define DR7_BP_EN_MASK 0x000000ff
160 #define DR7_GE (1 << 9)
161 #define DR7_GD (1 << 13)
162 #define DR7_FIXED_1 0x00000400
163 #define DR7_VOLATILE 0xffff23ff
165 /* apic attention bits */
166 #define KVM_APIC_CHECK_VAPIC 0
168 * The following bit is set with PV-EOI, unset on EOI.
169 * We detect PV-EOI changes by guest by comparing
170 * this bit with PV-EOI in guest memory.
171 * See the implementation in apic_update_pv_eoi.
173 #define KVM_APIC_PV_EOI_PENDING 1
176 * We don't want allocation failures within the mmu code, so we preallocate
177 * enough memory for a single page fault in a cache.
179 struct kvm_mmu_memory_cache {
181 void *objects[KVM_NR_MEM_OBJS];
185 * kvm_mmu_page_role, below, is defined as:
187 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
188 * bits 4:7 - page table level for this shadow (1-4)
189 * bits 8:9 - page table quadrant for 2-level guests
190 * bit 16 - direct mapping of virtual to physical mapping at gfn
191 * used for real mode and two-dimensional paging
192 * bits 17:19 - common access permissions for all ptes in this shadow page
194 union kvm_mmu_page_role {
200 unsigned pad_for_nice_hex_output:6;
206 unsigned smep_andnot_wp:1;
210 struct kvm_mmu_page {
211 struct list_head link;
212 struct hlist_node hash_link;
215 * The following two entries are used to key the shadow page in the
219 union kvm_mmu_page_role role;
222 /* hold the gfn of each spte inside spt */
225 int root_count; /* Currently serving as active root */
226 unsigned int unsync_children;
227 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
228 DECLARE_BITMAP(unsync_child_bitmap, 512);
231 int clear_spte_count;
234 int write_flooding_count;
238 struct kvm_pio_request {
246 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
247 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
251 void (*new_cr3)(struct kvm_vcpu *vcpu);
252 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
253 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
254 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
255 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
257 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
258 struct x86_exception *fault);
259 void (*free)(struct kvm_vcpu *vcpu);
260 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
261 struct x86_exception *exception);
262 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
263 int (*sync_page)(struct kvm_vcpu *vcpu,
264 struct kvm_mmu_page *sp);
265 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
266 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
267 u64 *spte, const void *pte);
270 int shadow_root_level;
271 union kvm_mmu_page_role base_role;
275 * Bitmap; bit set = permission fault
276 * Byte index: page fault error code [4:1]
277 * Bit index: pte permissions in ACC_* format
283 u64 rsvd_bits_mask[2][4];
286 * Bitmap: bit set = last pte in walk
287 * index[0:1]: level (zero-based)
294 u64 pdptrs[4]; /* pae */
307 struct perf_event *perf_event;
308 struct kvm_vcpu *vcpu;
312 unsigned nr_arch_gp_counters;
313 unsigned nr_arch_fixed_counters;
314 unsigned available_event_types;
319 u64 counter_bitmask[2];
320 u64 global_ctrl_mask;
322 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
323 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
324 struct irq_work irq_work;
328 struct kvm_vcpu_arch {
330 * rip and regs accesses must go through
331 * kvm_{register,rip}_{read,write} functions.
333 unsigned long regs[NR_VCPU_REGS];
338 unsigned long cr0_guest_owned_bits;
342 unsigned long cr4_guest_owned_bits;
347 struct kvm_lapic *apic; /* kernel irqchip context */
348 unsigned long apic_attention;
349 int32_t apic_arb_prio;
351 u64 ia32_misc_enable_msr;
352 bool tpr_access_reporting;
355 * Paging state of the vcpu
357 * If the vcpu runs in guest mode with two level paging this still saves
358 * the paging mode of the l1 guest. This context is always used to
364 * Paging state of an L2 guest (used for nested npt)
366 * This context will save all necessary information to walk page tables
367 * of the an L2 guest. This context is only initialized for page table
368 * walking and not for faulting since we never handle l2 page faults on
371 struct kvm_mmu nested_mmu;
374 * Pointer to the mmu context currently used for
375 * gva_to_gpa translations.
377 struct kvm_mmu *walk_mmu;
379 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
380 struct kvm_mmu_memory_cache mmu_page_cache;
381 struct kvm_mmu_memory_cache mmu_page_header_cache;
383 struct fpu guest_fpu;
386 struct kvm_pio_request pio;
389 u8 event_exit_inst_len;
391 struct kvm_queued_exception {
399 struct kvm_queued_interrupt {
405 int halt_request; /* real mode on Intel only */
408 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
409 /* emulate context */
411 struct x86_emulate_ctxt emulate_ctxt;
412 bool emulate_regs_need_sync_to_vcpu;
413 bool emulate_regs_need_sync_from_vcpu;
414 int (*complete_userspace_io)(struct kvm_vcpu *vcpu);
417 struct pvclock_vcpu_time_info hv_clock;
418 unsigned int hw_tsc_khz;
419 struct gfn_to_hva_cache pv_time;
420 bool pv_time_enabled;
421 /* set guest stopped flag in pvclock flags field */
422 bool pvclock_set_guest_stopped_request;
428 struct gfn_to_hva_cache stime;
429 struct kvm_steal_time steal;
435 u64 tsc_offset_adjustment;
438 u8 this_tsc_generation;
440 bool tsc_always_catchup;
441 s8 virtual_tsc_shift;
442 u32 virtual_tsc_mult;
444 s64 ia32_tsc_adjust_msr;
446 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
447 unsigned nmi_pending; /* NMI queued after currently running handler */
448 bool nmi_injected; /* Trying to inject an NMI this entry */
450 struct mtrr_state_type mtrr_state;
454 unsigned long db[KVM_NR_DB_REGS];
457 unsigned long eff_db[KVM_NR_DB_REGS];
458 unsigned long guest_debug_dr7;
465 /* Cache MMIO info */
473 /* used for guest single stepping over the given code position */
474 unsigned long singlestep_rip;
476 /* fields used by HYPER-V emulation */
479 cpumask_var_t wbinvd_dirty_mask;
481 unsigned long last_retry_eip;
482 unsigned long last_retry_addr;
486 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
487 struct gfn_to_hva_cache data;
493 /* OSVW MSRs (AMD only) */
501 struct gfn_to_hva_cache data;
505 * Indicate whether the access faults on its page table in guest
506 * which is set when fix page fault and used to detect unhandeable
509 bool write_fault_to_shadow_pgtable;
512 struct kvm_lpage_info {
516 struct kvm_arch_memory_slot {
517 unsigned long *rmap[KVM_NR_PAGE_SIZES];
518 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
521 struct kvm_apic_map {
524 /* fields bellow are used to decode ldr values in different modes */
525 u32 cid_shift, cid_mask, lid_mask;
526 struct kvm_lapic *phys_map[256];
527 /* first index is cluster id second is cpu id in a cluster */
528 struct kvm_lapic *logical_map[16][16];
532 unsigned int n_used_mmu_pages;
533 unsigned int n_requested_mmu_pages;
534 unsigned int n_max_mmu_pages;
535 unsigned int indirect_shadow_pages;
536 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
538 * Hash table of struct kvm_mmu_page.
540 struct list_head active_mmu_pages;
541 struct list_head assigned_dev_head;
542 struct iommu_domain *iommu_domain;
544 struct kvm_pic *vpic;
545 struct kvm_ioapic *vioapic;
546 struct kvm_pit *vpit;
547 int vapics_in_nmi_mode;
548 struct mutex apic_map_lock;
549 struct kvm_apic_map *apic_map;
551 unsigned int tss_addr;
552 struct page *apic_access_page;
556 struct page *ept_identity_pagetable;
557 bool ept_identity_pagetable_done;
558 gpa_t ept_identity_map_addr;
560 unsigned long irq_sources_bitmap;
562 raw_spinlock_t tsc_write_lock;
569 u8 cur_tsc_generation;
570 int nr_vcpus_matched_tsc;
572 spinlock_t pvclock_gtod_sync_lock;
573 bool use_master_clock;
574 u64 master_kernel_ns;
575 cycle_t master_cycle_now;
577 struct kvm_xen_hvm_config xen_hvm_config;
579 /* fields used by HYPER-V emulation */
583 #ifdef CONFIG_KVM_MMU_AUDIT
589 u32 mmu_shadow_zapped;
597 u32 remote_tlb_flush;
601 struct kvm_vcpu_stat {
611 u32 irq_window_exits;
612 u32 nmi_window_exits;
615 u32 request_irq_exits;
617 u32 host_state_reload;
621 u32 insn_emulation_fail;
627 struct x86_instruction_info;
636 int (*cpu_has_kvm_support)(void); /* __init */
637 int (*disabled_by_bios)(void); /* __init */
638 int (*hardware_enable)(void);
639 void (*hardware_disable)(void);
640 void (*check_processor_compatibility)(void *rtn);
641 int (*hardware_setup)(void); /* __init */
642 void (*hardware_unsetup)(void); /* __exit */
643 bool (*cpu_has_accelerated_tpr)(void);
644 void (*cpuid_update)(struct kvm_vcpu *vcpu);
646 /* Create, but do not attach this VCPU */
647 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
648 void (*vcpu_free)(struct kvm_vcpu *vcpu);
649 void (*vcpu_reset)(struct kvm_vcpu *vcpu);
651 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
652 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
653 void (*vcpu_put)(struct kvm_vcpu *vcpu);
655 void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu);
656 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
657 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
658 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
659 void (*get_segment)(struct kvm_vcpu *vcpu,
660 struct kvm_segment *var, int seg);
661 int (*get_cpl)(struct kvm_vcpu *vcpu);
662 void (*set_segment)(struct kvm_vcpu *vcpu,
663 struct kvm_segment *var, int seg);
664 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
665 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
666 void (*decache_cr3)(struct kvm_vcpu *vcpu);
667 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
668 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
669 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
670 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
671 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
672 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
673 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
674 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
675 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
676 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
677 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
678 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
679 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
680 void (*fpu_activate)(struct kvm_vcpu *vcpu);
681 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
683 void (*tlb_flush)(struct kvm_vcpu *vcpu);
685 void (*run)(struct kvm_vcpu *vcpu);
686 int (*handle_exit)(struct kvm_vcpu *vcpu);
687 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
688 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
689 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
690 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
691 unsigned char *hypercall_addr);
692 void (*set_irq)(struct kvm_vcpu *vcpu);
693 void (*set_nmi)(struct kvm_vcpu *vcpu);
694 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
695 bool has_error_code, u32 error_code,
697 void (*cancel_injection)(struct kvm_vcpu *vcpu);
698 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
699 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
700 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
701 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
702 int (*enable_nmi_window)(struct kvm_vcpu *vcpu);
703 int (*enable_irq_window)(struct kvm_vcpu *vcpu);
704 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
705 int (*vm_has_apicv)(struct kvm *kvm);
706 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
707 void (*hwapic_isr_update)(struct kvm *kvm, int isr);
708 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
709 void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set);
710 void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
711 void (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
712 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
713 int (*get_tdp_level)(void);
714 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
715 int (*get_lpage_level)(void);
716 bool (*rdtscp_supported)(void);
717 bool (*invpcid_supported)(void);
718 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
720 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
722 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
724 bool (*has_wbinvd_exit)(void);
726 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
727 u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu);
728 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
730 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
731 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc);
733 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
735 int (*check_intercept)(struct kvm_vcpu *vcpu,
736 struct x86_instruction_info *info,
737 enum x86_intercept_stage stage);
738 void (*handle_external_intr)(struct kvm_vcpu *vcpu);
741 struct kvm_arch_async_pf {
748 extern struct kvm_x86_ops *kvm_x86_ops;
750 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
753 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
756 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
758 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
761 int kvm_mmu_module_init(void);
762 void kvm_mmu_module_exit(void);
764 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
765 int kvm_mmu_create(struct kvm_vcpu *vcpu);
766 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
767 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
768 u64 dirty_mask, u64 nx_mask, u64 x_mask);
770 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
771 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
772 void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
773 struct kvm_memory_slot *slot,
774 gfn_t gfn_offset, unsigned long mask);
775 void kvm_mmu_zap_all(struct kvm *kvm);
776 void kvm_mmu_zap_mmio_sptes(struct kvm *kvm);
777 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
778 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
780 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
782 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
783 const void *val, int bytes);
784 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
786 extern bool tdp_enabled;
788 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
790 /* control of guest tsc rate supported? */
791 extern bool kvm_has_tsc_control;
792 /* minimum supported tsc_khz for guests */
793 extern u32 kvm_min_guest_tsc_khz;
794 /* maximum supported tsc_khz for guests */
795 extern u32 kvm_max_guest_tsc_khz;
797 enum emulation_result {
798 EMULATE_DONE, /* no further processing */
799 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
800 EMULATE_FAIL, /* can't emulate this instruction */
803 #define EMULTYPE_NO_DECODE (1 << 0)
804 #define EMULTYPE_TRAP_UD (1 << 1)
805 #define EMULTYPE_SKIP (1 << 2)
806 #define EMULTYPE_RETRY (1 << 3)
807 #define EMULTYPE_NO_REEXECUTE (1 << 4)
808 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
809 int emulation_type, void *insn, int insn_len);
811 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
814 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
817 void kvm_enable_efer_bits(u64);
818 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer);
819 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
820 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
822 struct x86_emulate_ctxt;
824 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
825 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
826 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
827 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
829 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
830 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
831 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, unsigned int vector);
833 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
834 int reason, bool has_error_code, u32 error_code);
836 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
837 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
838 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
839 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
840 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
841 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
842 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
843 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
844 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
845 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
847 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
848 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
850 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
851 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
852 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
854 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
855 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
856 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
857 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
858 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
859 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
860 gfn_t gfn, void *data, int offset, int len,
862 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
863 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
865 static inline int __kvm_irq_line_state(unsigned long *irq_state,
866 int irq_source_id, int level)
868 /* Logical OR for level trig interrupt */
870 __set_bit(irq_source_id, irq_state);
872 __clear_bit(irq_source_id, irq_state);
874 return !!(*irq_state);
877 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
878 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
880 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
882 int fx_init(struct kvm_vcpu *vcpu);
884 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
885 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
886 const u8 *new, int bytes);
887 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
888 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
889 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
890 int kvm_mmu_load(struct kvm_vcpu *vcpu);
891 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
892 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
893 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
894 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
895 struct x86_exception *exception);
896 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
897 struct x86_exception *exception);
898 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
899 struct x86_exception *exception);
900 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
901 struct x86_exception *exception);
903 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
905 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
906 void *insn, int insn_len);
907 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
909 void kvm_enable_tdp(void);
910 void kvm_disable_tdp(void);
912 int complete_pio(struct kvm_vcpu *vcpu);
913 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
915 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
920 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
922 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
924 return (struct kvm_mmu_page *)page_private(page);
927 static inline u16 kvm_read_ldt(void)
930 asm("sldt %0" : "=g"(ldt));
934 static inline void kvm_load_ldt(u16 sel)
936 asm("lldt %0" : : "rm"(sel));
940 static inline unsigned long read_msr(unsigned long msr)
949 static inline u32 get_rdx_init_val(void)
951 return 0x600; /* P6 family */
954 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
956 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
959 static inline u64 get_canonical(u64 la)
961 return ((int64_t)la << 16) >> 16;
964 static inline bool is_noncanonical_address(u64 la)
967 return get_canonical(la) != la;
973 #define TSS_IOPB_BASE_OFFSET 0x66
974 #define TSS_BASE_SIZE 0x68
975 #define TSS_IOPB_SIZE (65536 / 8)
976 #define TSS_REDIRECTION_SIZE (256 / 8)
977 #define RMODE_TSS_SIZE \
978 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
981 TASK_SWITCH_CALL = 0,
982 TASK_SWITCH_IRET = 1,
984 TASK_SWITCH_GATE = 3,
987 #define HF_GIF_MASK (1 << 0)
988 #define HF_HIF_MASK (1 << 1)
989 #define HF_VINTR_MASK (1 << 2)
990 #define HF_NMI_MASK (1 << 3)
991 #define HF_IRET_MASK (1 << 4)
992 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
995 * Hardware virtualization extension instructions may fault if a
996 * reboot turns off virtualization while processes are running.
997 * Trap the fault and ignore the instruction if that happens.
999 asmlinkage void kvm_spurious_fault(void);
1001 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
1002 "666: " insn "\n\t" \
1004 ".pushsection .fixup, \"ax\" \n" \
1006 cleanup_insn "\n\t" \
1007 "cmpb $0, kvm_rebooting \n\t" \
1009 __ASM_SIZE(push) " $666b \n\t" \
1010 "call kvm_spurious_fault \n\t" \
1011 ".popsection \n\t" \
1012 _ASM_EXTABLE(666b, 667b)
1014 #define __kvm_handle_fault_on_reboot(insn) \
1015 ____kvm_handle_fault_on_reboot(insn, "")
1017 #define KVM_ARCH_WANT_MMU_NOTIFIER
1018 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
1019 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
1020 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
1021 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
1022 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
1023 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
1024 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v);
1025 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
1026 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
1027 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
1028 void kvm_vcpu_reset(struct kvm_vcpu *vcpu);
1030 void kvm_define_shared_msr(unsigned index, u32 msr);
1031 int kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
1033 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
1035 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1036 struct kvm_async_pf *work);
1037 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1038 struct kvm_async_pf *work);
1039 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1040 struct kvm_async_pf *work);
1041 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
1042 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
1044 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
1046 int kvm_is_in_guest(void);
1048 void kvm_pmu_init(struct kvm_vcpu *vcpu);
1049 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
1050 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
1051 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
1052 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
1053 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
1054 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
1055 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
1056 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
1057 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
1059 #endif /* _ASM_X86_KVM_HOST_H */