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_FSGSBASE \
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 #define SELECTOR_TI_MASK (1 << 2)
83 #define SELECTOR_RPL_MASK 0x03
87 #define KVM_PERMILLE_MMU_PAGES 20
88 #define KVM_MIN_ALLOC_MMU_PAGES 64
89 #define KVM_MMU_HASH_SHIFT 10
90 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
91 #define KVM_MIN_FREE_MMU_PAGES 5
92 #define KVM_REFILL_PAGES 25
93 #define KVM_MAX_CPUID_ENTRIES 80
94 #define KVM_NR_FIXED_MTRR_REGION 88
95 #define KVM_NR_VAR_MTRR 8
97 #define ASYNC_PF_PER_VCPU 64
127 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
145 #include <asm/kvm_emulate.h>
147 #define KVM_NR_MEM_OBJS 40
149 #define KVM_NR_DB_REGS 4
151 #define DR6_BD (1 << 13)
152 #define DR6_BS (1 << 14)
153 #define DR6_FIXED_1 0xffff0ff0
154 #define DR6_VOLATILE 0x0000e00f
156 #define DR7_BP_EN_MASK 0x000000ff
157 #define DR7_GE (1 << 9)
158 #define DR7_GD (1 << 13)
159 #define DR7_FIXED_1 0x00000400
160 #define DR7_VOLATILE 0xffff23ff
162 /* apic attention bits */
163 #define KVM_APIC_CHECK_VAPIC 0
165 * The following bit is set with PV-EOI, unset on EOI.
166 * We detect PV-EOI changes by guest by comparing
167 * this bit with PV-EOI in guest memory.
168 * See the implementation in apic_update_pv_eoi.
170 #define KVM_APIC_PV_EOI_PENDING 1
173 * We don't want allocation failures within the mmu code, so we preallocate
174 * enough memory for a single page fault in a cache.
176 struct kvm_mmu_memory_cache {
178 void *objects[KVM_NR_MEM_OBJS];
182 * kvm_mmu_page_role, below, is defined as:
184 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
185 * bits 4:7 - page table level for this shadow (1-4)
186 * bits 8:9 - page table quadrant for 2-level guests
187 * bit 16 - direct mapping of virtual to physical mapping at gfn
188 * used for real mode and two-dimensional paging
189 * bits 17:19 - common access permissions for all ptes in this shadow page
191 union kvm_mmu_page_role {
197 unsigned pad_for_nice_hex_output:6;
203 unsigned smep_andnot_wp:1;
207 struct kvm_mmu_page {
208 struct list_head link;
209 struct hlist_node hash_link;
212 * The following two entries are used to key the shadow page in the
216 union kvm_mmu_page_role role;
219 /* hold the gfn of each spte inside spt */
222 int root_count; /* Currently serving as active root */
223 unsigned int unsync_children;
224 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
226 /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */
227 unsigned long mmu_valid_gen;
229 DECLARE_BITMAP(unsync_child_bitmap, 512);
233 * Used out of the mmu-lock to avoid reading spte values while an
234 * update is in progress; see the comments in __get_spte_lockless().
236 int clear_spte_count;
239 /* Number of writes since the last time traversal visited this page. */
240 int write_flooding_count;
243 struct kvm_pio_request {
251 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
252 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
256 void (*new_cr3)(struct kvm_vcpu *vcpu);
257 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
258 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
259 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
260 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
262 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
263 struct x86_exception *fault);
264 void (*free)(struct kvm_vcpu *vcpu);
265 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
266 struct x86_exception *exception);
267 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
268 int (*sync_page)(struct kvm_vcpu *vcpu,
269 struct kvm_mmu_page *sp);
270 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
271 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
272 u64 *spte, const void *pte);
275 int shadow_root_level;
276 union kvm_mmu_page_role base_role;
280 * Bitmap; bit set = permission fault
281 * Byte index: page fault error code [4:1]
282 * Bit index: pte permissions in ACC_* format
288 u64 rsvd_bits_mask[2][4];
292 * Bitmap: bit set = last pte in walk
293 * index[0:1]: level (zero-based)
300 u64 pdptrs[4]; /* pae */
313 struct perf_event *perf_event;
314 struct kvm_vcpu *vcpu;
318 unsigned nr_arch_gp_counters;
319 unsigned nr_arch_fixed_counters;
320 unsigned available_event_types;
325 u64 counter_bitmask[2];
326 u64 global_ctrl_mask;
329 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
330 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
331 struct irq_work irq_work;
335 struct kvm_vcpu_arch {
337 * rip and regs accesses must go through
338 * kvm_{register,rip}_{read,write} functions.
340 unsigned long regs[NR_VCPU_REGS];
345 unsigned long cr0_guest_owned_bits;
349 unsigned long cr4_guest_owned_bits;
354 struct kvm_lapic *apic; /* kernel irqchip context */
355 unsigned long apic_attention;
356 int32_t apic_arb_prio;
358 u64 ia32_misc_enable_msr;
359 bool tpr_access_reporting;
362 * Paging state of the vcpu
364 * If the vcpu runs in guest mode with two level paging this still saves
365 * the paging mode of the l1 guest. This context is always used to
371 * Paging state of an L2 guest (used for nested npt)
373 * This context will save all necessary information to walk page tables
374 * of the an L2 guest. This context is only initialized for page table
375 * walking and not for faulting since we never handle l2 page faults on
378 struct kvm_mmu nested_mmu;
381 * Pointer to the mmu context currently used for
382 * gva_to_gpa translations.
384 struct kvm_mmu *walk_mmu;
386 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
387 struct kvm_mmu_memory_cache mmu_page_cache;
388 struct kvm_mmu_memory_cache mmu_page_header_cache;
390 struct fpu guest_fpu;
392 u64 guest_supported_xcr0;
393 u32 guest_xstate_size;
395 struct kvm_pio_request pio;
398 u8 event_exit_inst_len;
400 struct kvm_queued_exception {
408 struct kvm_queued_interrupt {
414 int halt_request; /* real mode on Intel only */
417 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
418 /* emulate context */
420 struct x86_emulate_ctxt emulate_ctxt;
421 bool emulate_regs_need_sync_to_vcpu;
422 bool emulate_regs_need_sync_from_vcpu;
423 int (*complete_userspace_io)(struct kvm_vcpu *vcpu);
426 struct pvclock_vcpu_time_info hv_clock;
427 unsigned int hw_tsc_khz;
428 struct gfn_to_hva_cache pv_time;
429 bool pv_time_enabled;
430 /* set guest stopped flag in pvclock flags field */
431 bool pvclock_set_guest_stopped_request;
437 struct gfn_to_hva_cache stime;
438 struct kvm_steal_time steal;
444 u64 tsc_offset_adjustment;
447 u8 this_tsc_generation;
449 bool tsc_always_catchup;
450 s8 virtual_tsc_shift;
451 u32 virtual_tsc_mult;
453 s64 ia32_tsc_adjust_msr;
455 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
456 unsigned nmi_pending; /* NMI queued after currently running handler */
457 bool nmi_injected; /* Trying to inject an NMI this entry */
459 struct mtrr_state_type mtrr_state;
463 unsigned long db[KVM_NR_DB_REGS];
466 unsigned long eff_db[KVM_NR_DB_REGS];
467 unsigned long guest_debug_dr7;
474 /* Cache MMIO info */
481 /* used for guest single stepping over the given code position */
482 unsigned long singlestep_rip;
484 /* fields used by HYPER-V emulation */
487 cpumask_var_t wbinvd_dirty_mask;
489 unsigned long last_retry_eip;
490 unsigned long last_retry_addr;
494 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
495 struct gfn_to_hva_cache data;
501 /* OSVW MSRs (AMD only) */
509 struct gfn_to_hva_cache data;
513 * Indicate whether the access faults on its page table in guest
514 * which is set when fix page fault and used to detect unhandeable
517 bool write_fault_to_shadow_pgtable;
519 /* set at EPT violation at this point */
520 unsigned long exit_qualification;
522 /* pv related host specific info */
528 struct kvm_lpage_info {
532 struct kvm_arch_memory_slot {
533 unsigned long *rmap[KVM_NR_PAGE_SIZES];
534 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
537 struct kvm_apic_map {
540 /* fields bellow are used to decode ldr values in different modes */
541 u32 cid_shift, cid_mask, lid_mask;
542 struct kvm_lapic *phys_map[256];
543 /* first index is cluster id second is cpu id in a cluster */
544 struct kvm_lapic *logical_map[16][16];
548 unsigned int n_used_mmu_pages;
549 unsigned int n_requested_mmu_pages;
550 unsigned int n_max_mmu_pages;
551 unsigned int indirect_shadow_pages;
552 unsigned long mmu_valid_gen;
553 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
555 * Hash table of struct kvm_mmu_page.
557 struct list_head active_mmu_pages;
558 struct list_head zapped_obsolete_pages;
560 struct list_head assigned_dev_head;
561 struct iommu_domain *iommu_domain;
563 struct kvm_pic *vpic;
564 struct kvm_ioapic *vioapic;
565 struct kvm_pit *vpit;
566 int vapics_in_nmi_mode;
567 struct mutex apic_map_lock;
568 struct kvm_apic_map *apic_map;
570 unsigned int tss_addr;
571 struct page *apic_access_page;
575 struct page *ept_identity_pagetable;
576 bool ept_identity_pagetable_done;
577 gpa_t ept_identity_map_addr;
579 unsigned long irq_sources_bitmap;
581 raw_spinlock_t tsc_write_lock;
588 u8 cur_tsc_generation;
589 int nr_vcpus_matched_tsc;
591 spinlock_t pvclock_gtod_sync_lock;
592 bool use_master_clock;
593 u64 master_kernel_ns;
594 cycle_t master_cycle_now;
596 struct kvm_xen_hvm_config xen_hvm_config;
598 /* fields used by HYPER-V emulation */
602 #ifdef CONFIG_KVM_MMU_AUDIT
608 u32 mmu_shadow_zapped;
616 u32 remote_tlb_flush;
620 struct kvm_vcpu_stat {
630 u32 irq_window_exits;
631 u32 nmi_window_exits;
634 u32 request_irq_exits;
636 u32 host_state_reload;
640 u32 insn_emulation_fail;
646 struct x86_instruction_info;
655 int (*cpu_has_kvm_support)(void); /* __init */
656 int (*disabled_by_bios)(void); /* __init */
657 int (*hardware_enable)(void *dummy);
658 void (*hardware_disable)(void *dummy);
659 void (*check_processor_compatibility)(void *rtn);
660 int (*hardware_setup)(void); /* __init */
661 void (*hardware_unsetup)(void); /* __exit */
662 bool (*cpu_has_accelerated_tpr)(void);
663 void (*cpuid_update)(struct kvm_vcpu *vcpu);
665 /* Create, but do not attach this VCPU */
666 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
667 void (*vcpu_free)(struct kvm_vcpu *vcpu);
668 void (*vcpu_reset)(struct kvm_vcpu *vcpu);
670 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
671 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
672 void (*vcpu_put)(struct kvm_vcpu *vcpu);
674 void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu);
675 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
676 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
677 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
678 void (*get_segment)(struct kvm_vcpu *vcpu,
679 struct kvm_segment *var, int seg);
680 int (*get_cpl)(struct kvm_vcpu *vcpu);
681 void (*set_segment)(struct kvm_vcpu *vcpu,
682 struct kvm_segment *var, int seg);
683 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
684 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
685 void (*decache_cr3)(struct kvm_vcpu *vcpu);
686 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
687 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
688 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
689 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
690 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
691 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
692 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
693 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
694 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
695 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
696 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
697 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
698 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
699 void (*fpu_activate)(struct kvm_vcpu *vcpu);
700 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
702 void (*tlb_flush)(struct kvm_vcpu *vcpu);
704 void (*run)(struct kvm_vcpu *vcpu);
705 int (*handle_exit)(struct kvm_vcpu *vcpu);
706 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
707 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
708 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
709 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
710 unsigned char *hypercall_addr);
711 void (*set_irq)(struct kvm_vcpu *vcpu);
712 void (*set_nmi)(struct kvm_vcpu *vcpu);
713 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
714 bool has_error_code, u32 error_code,
716 void (*cancel_injection)(struct kvm_vcpu *vcpu);
717 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
718 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
719 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
720 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
721 int (*enable_nmi_window)(struct kvm_vcpu *vcpu);
722 int (*enable_irq_window)(struct kvm_vcpu *vcpu);
723 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
724 int (*vm_has_apicv)(struct kvm *kvm);
725 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
726 void (*hwapic_isr_update)(struct kvm *kvm, int isr);
727 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
728 void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set);
729 void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
730 void (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
731 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
732 int (*get_tdp_level)(void);
733 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
734 int (*get_lpage_level)(void);
735 bool (*rdtscp_supported)(void);
736 bool (*invpcid_supported)(void);
737 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
739 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
741 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
743 bool (*has_wbinvd_exit)(void);
745 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
746 u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu);
747 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
749 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
750 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc);
752 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
754 int (*check_intercept)(struct kvm_vcpu *vcpu,
755 struct x86_instruction_info *info,
756 enum x86_intercept_stage stage);
757 void (*handle_external_intr)(struct kvm_vcpu *vcpu);
760 struct kvm_arch_async_pf {
767 extern struct kvm_x86_ops *kvm_x86_ops;
769 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
772 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
775 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
777 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
780 int kvm_mmu_module_init(void);
781 void kvm_mmu_module_exit(void);
783 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
784 int kvm_mmu_create(struct kvm_vcpu *vcpu);
785 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
786 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
787 u64 dirty_mask, u64 nx_mask, u64 x_mask);
789 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
790 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
791 void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
792 struct kvm_memory_slot *slot,
793 gfn_t gfn_offset, unsigned long mask);
794 void kvm_mmu_zap_all(struct kvm *kvm);
795 void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm);
796 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
797 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
799 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
801 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
802 const void *val, int bytes);
803 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
805 extern bool tdp_enabled;
807 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
809 /* control of guest tsc rate supported? */
810 extern bool kvm_has_tsc_control;
811 /* minimum supported tsc_khz for guests */
812 extern u32 kvm_min_guest_tsc_khz;
813 /* maximum supported tsc_khz for guests */
814 extern u32 kvm_max_guest_tsc_khz;
816 enum emulation_result {
817 EMULATE_DONE, /* no further processing */
818 EMULATE_USER_EXIT, /* kvm_run ready for userspace exit */
819 EMULATE_FAIL, /* can't emulate this instruction */
822 #define EMULTYPE_NO_DECODE (1 << 0)
823 #define EMULTYPE_TRAP_UD (1 << 1)
824 #define EMULTYPE_SKIP (1 << 2)
825 #define EMULTYPE_RETRY (1 << 3)
826 #define EMULTYPE_NO_REEXECUTE (1 << 4)
827 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
828 int emulation_type, void *insn, int insn_len);
830 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
833 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
836 void kvm_enable_efer_bits(u64);
837 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer);
838 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
839 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
841 struct x86_emulate_ctxt;
843 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
844 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
845 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
846 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
848 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
849 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
850 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, unsigned int vector);
852 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
853 int reason, bool has_error_code, u32 error_code);
855 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
856 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
857 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
858 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
859 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
860 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
861 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
862 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
863 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
864 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
866 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
867 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
869 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
870 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
871 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
873 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
874 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
875 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
876 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
877 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
878 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
879 gfn_t gfn, void *data, int offset, int len,
881 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
882 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
884 static inline int __kvm_irq_line_state(unsigned long *irq_state,
885 int irq_source_id, int level)
887 /* Logical OR for level trig interrupt */
889 __set_bit(irq_source_id, irq_state);
891 __clear_bit(irq_source_id, irq_state);
893 return !!(*irq_state);
896 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
897 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
899 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
901 int fx_init(struct kvm_vcpu *vcpu);
903 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
904 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
905 const u8 *new, int bytes);
906 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
907 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
908 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
909 int kvm_mmu_load(struct kvm_vcpu *vcpu);
910 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
911 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
912 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
913 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
914 struct x86_exception *exception);
915 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
916 struct x86_exception *exception);
917 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
918 struct x86_exception *exception);
919 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
920 struct x86_exception *exception);
922 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
924 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
925 void *insn, int insn_len);
926 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
928 void kvm_enable_tdp(void);
929 void kvm_disable_tdp(void);
931 int complete_pio(struct kvm_vcpu *vcpu);
932 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
934 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
939 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
941 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
943 return (struct kvm_mmu_page *)page_private(page);
946 static inline u16 kvm_read_ldt(void)
949 asm("sldt %0" : "=g"(ldt));
953 static inline void kvm_load_ldt(u16 sel)
955 asm("lldt %0" : : "rm"(sel));
959 static inline unsigned long read_msr(unsigned long msr)
968 static inline u32 get_rdx_init_val(void)
970 return 0x600; /* P6 family */
973 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
975 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
978 #define TSS_IOPB_BASE_OFFSET 0x66
979 #define TSS_BASE_SIZE 0x68
980 #define TSS_IOPB_SIZE (65536 / 8)
981 #define TSS_REDIRECTION_SIZE (256 / 8)
982 #define RMODE_TSS_SIZE \
983 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
986 TASK_SWITCH_CALL = 0,
987 TASK_SWITCH_IRET = 1,
989 TASK_SWITCH_GATE = 3,
992 #define HF_GIF_MASK (1 << 0)
993 #define HF_HIF_MASK (1 << 1)
994 #define HF_VINTR_MASK (1 << 2)
995 #define HF_NMI_MASK (1 << 3)
996 #define HF_IRET_MASK (1 << 4)
997 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
1000 * Hardware virtualization extension instructions may fault if a
1001 * reboot turns off virtualization while processes are running.
1002 * Trap the fault and ignore the instruction if that happens.
1004 asmlinkage void kvm_spurious_fault(void);
1006 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
1007 "666: " insn "\n\t" \
1009 ".pushsection .fixup, \"ax\" \n" \
1011 cleanup_insn "\n\t" \
1012 "cmpb $0, kvm_rebooting \n\t" \
1014 __ASM_SIZE(push) " $666b \n\t" \
1015 "call kvm_spurious_fault \n\t" \
1016 ".popsection \n\t" \
1017 _ASM_EXTABLE(666b, 667b)
1019 #define __kvm_handle_fault_on_reboot(insn) \
1020 ____kvm_handle_fault_on_reboot(insn, "")
1022 #define KVM_ARCH_WANT_MMU_NOTIFIER
1023 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
1024 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
1025 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
1026 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
1027 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
1028 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
1029 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v);
1030 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
1031 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
1032 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
1033 void kvm_vcpu_reset(struct kvm_vcpu *vcpu);
1035 void kvm_define_shared_msr(unsigned index, u32 msr);
1036 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
1038 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
1040 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1041 struct kvm_async_pf *work);
1042 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1043 struct kvm_async_pf *work);
1044 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1045 struct kvm_async_pf *work);
1046 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
1047 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
1049 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
1051 int kvm_is_in_guest(void);
1053 void kvm_pmu_init(struct kvm_vcpu *vcpu);
1054 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
1055 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
1056 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
1057 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
1058 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
1059 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
1060 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
1061 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
1062 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
1064 #endif /* _ASM_X86_KVM_HOST_H */