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];
291 * Bitmap: bit set = last pte in walk
292 * index[0:1]: level (zero-based)
299 u64 pdptrs[4]; /* pae */
312 struct perf_event *perf_event;
313 struct kvm_vcpu *vcpu;
317 unsigned nr_arch_gp_counters;
318 unsigned nr_arch_fixed_counters;
319 unsigned available_event_types;
324 u64 counter_bitmask[2];
325 u64 global_ctrl_mask;
327 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
328 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
329 struct irq_work irq_work;
333 struct kvm_vcpu_arch {
335 * rip and regs accesses must go through
336 * kvm_{register,rip}_{read,write} functions.
338 unsigned long regs[NR_VCPU_REGS];
343 unsigned long cr0_guest_owned_bits;
347 unsigned long cr4_guest_owned_bits;
352 struct kvm_lapic *apic; /* kernel irqchip context */
353 unsigned long apic_attention;
354 int32_t apic_arb_prio;
356 u64 ia32_misc_enable_msr;
357 bool tpr_access_reporting;
360 * Paging state of the vcpu
362 * If the vcpu runs in guest mode with two level paging this still saves
363 * the paging mode of the l1 guest. This context is always used to
369 * Paging state of an L2 guest (used for nested npt)
371 * This context will save all necessary information to walk page tables
372 * of the an L2 guest. This context is only initialized for page table
373 * walking and not for faulting since we never handle l2 page faults on
376 struct kvm_mmu nested_mmu;
379 * Pointer to the mmu context currently used for
380 * gva_to_gpa translations.
382 struct kvm_mmu *walk_mmu;
384 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
385 struct kvm_mmu_memory_cache mmu_page_cache;
386 struct kvm_mmu_memory_cache mmu_page_header_cache;
388 struct fpu guest_fpu;
391 struct kvm_pio_request pio;
394 u8 event_exit_inst_len;
396 struct kvm_queued_exception {
404 struct kvm_queued_interrupt {
410 int halt_request; /* real mode on Intel only */
413 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
414 /* emulate context */
416 struct x86_emulate_ctxt emulate_ctxt;
417 bool emulate_regs_need_sync_to_vcpu;
418 bool emulate_regs_need_sync_from_vcpu;
419 int (*complete_userspace_io)(struct kvm_vcpu *vcpu);
422 struct pvclock_vcpu_time_info hv_clock;
423 unsigned int hw_tsc_khz;
424 struct gfn_to_hva_cache pv_time;
425 bool pv_time_enabled;
426 /* set guest stopped flag in pvclock flags field */
427 bool pvclock_set_guest_stopped_request;
433 struct gfn_to_hva_cache stime;
434 struct kvm_steal_time steal;
440 u64 tsc_offset_adjustment;
443 u8 this_tsc_generation;
445 bool tsc_always_catchup;
446 s8 virtual_tsc_shift;
447 u32 virtual_tsc_mult;
449 s64 ia32_tsc_adjust_msr;
451 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
452 unsigned nmi_pending; /* NMI queued after currently running handler */
453 bool nmi_injected; /* Trying to inject an NMI this entry */
455 struct mtrr_state_type mtrr_state;
459 unsigned long db[KVM_NR_DB_REGS];
462 unsigned long eff_db[KVM_NR_DB_REGS];
463 unsigned long guest_debug_dr7;
470 /* Cache MMIO info */
477 /* used for guest single stepping over the given code position */
478 unsigned long singlestep_rip;
480 /* fields used by HYPER-V emulation */
483 cpumask_var_t wbinvd_dirty_mask;
485 unsigned long last_retry_eip;
486 unsigned long last_retry_addr;
490 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
491 struct gfn_to_hva_cache data;
497 /* OSVW MSRs (AMD only) */
505 struct gfn_to_hva_cache data;
509 * Indicate whether the access faults on its page table in guest
510 * which is set when fix page fault and used to detect unhandeable
513 bool write_fault_to_shadow_pgtable;
516 struct kvm_lpage_info {
520 struct kvm_arch_memory_slot {
521 unsigned long *rmap[KVM_NR_PAGE_SIZES];
522 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
525 struct kvm_apic_map {
528 /* fields bellow are used to decode ldr values in different modes */
529 u32 cid_shift, cid_mask, lid_mask;
530 struct kvm_lapic *phys_map[256];
531 /* first index is cluster id second is cpu id in a cluster */
532 struct kvm_lapic *logical_map[16][16];
536 unsigned int n_used_mmu_pages;
537 unsigned int n_requested_mmu_pages;
538 unsigned int n_max_mmu_pages;
539 unsigned int indirect_shadow_pages;
540 unsigned long mmu_valid_gen;
541 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
543 * Hash table of struct kvm_mmu_page.
545 struct list_head active_mmu_pages;
546 struct list_head zapped_obsolete_pages;
548 struct list_head assigned_dev_head;
549 struct iommu_domain *iommu_domain;
551 struct kvm_pic *vpic;
552 struct kvm_ioapic *vioapic;
553 struct kvm_pit *vpit;
554 int vapics_in_nmi_mode;
555 struct mutex apic_map_lock;
556 struct kvm_apic_map *apic_map;
558 unsigned int tss_addr;
559 struct page *apic_access_page;
563 struct page *ept_identity_pagetable;
564 bool ept_identity_pagetable_done;
565 gpa_t ept_identity_map_addr;
567 unsigned long irq_sources_bitmap;
569 raw_spinlock_t tsc_write_lock;
576 u8 cur_tsc_generation;
577 int nr_vcpus_matched_tsc;
579 spinlock_t pvclock_gtod_sync_lock;
580 bool use_master_clock;
581 u64 master_kernel_ns;
582 cycle_t master_cycle_now;
584 struct kvm_xen_hvm_config xen_hvm_config;
586 /* fields used by HYPER-V emulation */
590 #ifdef CONFIG_KVM_MMU_AUDIT
596 u32 mmu_shadow_zapped;
604 u32 remote_tlb_flush;
608 struct kvm_vcpu_stat {
618 u32 irq_window_exits;
619 u32 nmi_window_exits;
622 u32 request_irq_exits;
624 u32 host_state_reload;
628 u32 insn_emulation_fail;
634 struct x86_instruction_info;
643 int (*cpu_has_kvm_support)(void); /* __init */
644 int (*disabled_by_bios)(void); /* __init */
645 int (*hardware_enable)(void *dummy);
646 void (*hardware_disable)(void *dummy);
647 void (*check_processor_compatibility)(void *rtn);
648 int (*hardware_setup)(void); /* __init */
649 void (*hardware_unsetup)(void); /* __exit */
650 bool (*cpu_has_accelerated_tpr)(void);
651 void (*cpuid_update)(struct kvm_vcpu *vcpu);
653 /* Create, but do not attach this VCPU */
654 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
655 void (*vcpu_free)(struct kvm_vcpu *vcpu);
656 void (*vcpu_reset)(struct kvm_vcpu *vcpu);
658 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
659 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
660 void (*vcpu_put)(struct kvm_vcpu *vcpu);
662 void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu);
663 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
664 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
665 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
666 void (*get_segment)(struct kvm_vcpu *vcpu,
667 struct kvm_segment *var, int seg);
668 int (*get_cpl)(struct kvm_vcpu *vcpu);
669 void (*set_segment)(struct kvm_vcpu *vcpu,
670 struct kvm_segment *var, int seg);
671 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
672 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
673 void (*decache_cr3)(struct kvm_vcpu *vcpu);
674 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
675 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
676 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
677 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
678 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
679 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
680 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
681 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
682 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
683 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
684 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
685 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
686 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
687 void (*fpu_activate)(struct kvm_vcpu *vcpu);
688 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
690 void (*tlb_flush)(struct kvm_vcpu *vcpu);
692 void (*run)(struct kvm_vcpu *vcpu);
693 int (*handle_exit)(struct kvm_vcpu *vcpu);
694 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
695 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
696 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
697 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
698 unsigned char *hypercall_addr);
699 void (*set_irq)(struct kvm_vcpu *vcpu);
700 void (*set_nmi)(struct kvm_vcpu *vcpu);
701 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
702 bool has_error_code, u32 error_code,
704 void (*cancel_injection)(struct kvm_vcpu *vcpu);
705 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
706 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
707 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
708 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
709 int (*enable_nmi_window)(struct kvm_vcpu *vcpu);
710 int (*enable_irq_window)(struct kvm_vcpu *vcpu);
711 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
712 int (*vm_has_apicv)(struct kvm *kvm);
713 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
714 void (*hwapic_isr_update)(struct kvm *kvm, int isr);
715 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
716 void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set);
717 void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
718 void (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
719 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
720 int (*get_tdp_level)(void);
721 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
722 int (*get_lpage_level)(void);
723 bool (*rdtscp_supported)(void);
724 bool (*invpcid_supported)(void);
725 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
727 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
729 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
731 bool (*has_wbinvd_exit)(void);
733 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
734 u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu);
735 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
737 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
738 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc);
740 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
742 int (*check_intercept)(struct kvm_vcpu *vcpu,
743 struct x86_instruction_info *info,
744 enum x86_intercept_stage stage);
745 void (*handle_external_intr)(struct kvm_vcpu *vcpu);
748 struct kvm_arch_async_pf {
755 extern struct kvm_x86_ops *kvm_x86_ops;
757 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
760 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
763 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
765 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
768 int kvm_mmu_module_init(void);
769 void kvm_mmu_module_exit(void);
771 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
772 int kvm_mmu_create(struct kvm_vcpu *vcpu);
773 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
774 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
775 u64 dirty_mask, u64 nx_mask, u64 x_mask);
777 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
778 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
779 void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
780 struct kvm_memory_slot *slot,
781 gfn_t gfn_offset, unsigned long mask);
782 void kvm_mmu_zap_all(struct kvm *kvm);
783 void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm);
784 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
785 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
787 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
789 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
790 const void *val, int bytes);
791 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
793 extern bool tdp_enabled;
795 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
797 /* control of guest tsc rate supported? */
798 extern bool kvm_has_tsc_control;
799 /* minimum supported tsc_khz for guests */
800 extern u32 kvm_min_guest_tsc_khz;
801 /* maximum supported tsc_khz for guests */
802 extern u32 kvm_max_guest_tsc_khz;
804 enum emulation_result {
805 EMULATE_DONE, /* no further processing */
806 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
807 EMULATE_FAIL, /* can't emulate this instruction */
810 #define EMULTYPE_NO_DECODE (1 << 0)
811 #define EMULTYPE_TRAP_UD (1 << 1)
812 #define EMULTYPE_SKIP (1 << 2)
813 #define EMULTYPE_RETRY (1 << 3)
814 #define EMULTYPE_NO_REEXECUTE (1 << 4)
815 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
816 int emulation_type, void *insn, int insn_len);
818 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
821 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
824 void kvm_enable_efer_bits(u64);
825 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer);
826 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
827 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
829 struct x86_emulate_ctxt;
831 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
832 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
833 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
834 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
836 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
837 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
838 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, unsigned int vector);
840 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
841 int reason, bool has_error_code, u32 error_code);
843 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
844 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
845 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
846 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
847 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
848 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
849 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
850 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
851 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
852 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
854 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
855 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
857 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
858 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
859 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
861 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
862 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
863 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
864 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
865 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
866 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
867 gfn_t gfn, void *data, int offset, int len,
869 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
870 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
872 static inline int __kvm_irq_line_state(unsigned long *irq_state,
873 int irq_source_id, int level)
875 /* Logical OR for level trig interrupt */
877 __set_bit(irq_source_id, irq_state);
879 __clear_bit(irq_source_id, irq_state);
881 return !!(*irq_state);
884 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
885 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
887 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
889 int fx_init(struct kvm_vcpu *vcpu);
891 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
892 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
893 const u8 *new, int bytes);
894 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
895 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
896 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
897 int kvm_mmu_load(struct kvm_vcpu *vcpu);
898 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
899 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
900 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
901 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
902 struct x86_exception *exception);
903 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
904 struct x86_exception *exception);
905 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
906 struct x86_exception *exception);
907 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
908 struct x86_exception *exception);
910 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
912 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
913 void *insn, int insn_len);
914 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
916 void kvm_enable_tdp(void);
917 void kvm_disable_tdp(void);
919 int complete_pio(struct kvm_vcpu *vcpu);
920 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
922 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
927 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
929 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
931 return (struct kvm_mmu_page *)page_private(page);
934 static inline u16 kvm_read_ldt(void)
937 asm("sldt %0" : "=g"(ldt));
941 static inline void kvm_load_ldt(u16 sel)
943 asm("lldt %0" : : "rm"(sel));
947 static inline unsigned long read_msr(unsigned long msr)
956 static inline u32 get_rdx_init_val(void)
958 return 0x600; /* P6 family */
961 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
963 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
966 #define TSS_IOPB_BASE_OFFSET 0x66
967 #define TSS_BASE_SIZE 0x68
968 #define TSS_IOPB_SIZE (65536 / 8)
969 #define TSS_REDIRECTION_SIZE (256 / 8)
970 #define RMODE_TSS_SIZE \
971 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
974 TASK_SWITCH_CALL = 0,
975 TASK_SWITCH_IRET = 1,
977 TASK_SWITCH_GATE = 3,
980 #define HF_GIF_MASK (1 << 0)
981 #define HF_HIF_MASK (1 << 1)
982 #define HF_VINTR_MASK (1 << 2)
983 #define HF_NMI_MASK (1 << 3)
984 #define HF_IRET_MASK (1 << 4)
985 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
988 * Hardware virtualization extension instructions may fault if a
989 * reboot turns off virtualization while processes are running.
990 * Trap the fault and ignore the instruction if that happens.
992 asmlinkage void kvm_spurious_fault(void);
994 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
995 "666: " insn "\n\t" \
997 ".pushsection .fixup, \"ax\" \n" \
999 cleanup_insn "\n\t" \
1000 "cmpb $0, kvm_rebooting \n\t" \
1002 __ASM_SIZE(push) " $666b \n\t" \
1003 "call kvm_spurious_fault \n\t" \
1004 ".popsection \n\t" \
1005 _ASM_EXTABLE(666b, 667b)
1007 #define __kvm_handle_fault_on_reboot(insn) \
1008 ____kvm_handle_fault_on_reboot(insn, "")
1010 #define KVM_ARCH_WANT_MMU_NOTIFIER
1011 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
1012 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
1013 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
1014 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
1015 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
1016 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
1017 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v);
1018 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
1019 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
1020 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
1021 void kvm_vcpu_reset(struct kvm_vcpu *vcpu);
1023 void kvm_define_shared_msr(unsigned index, u32 msr);
1024 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
1026 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
1028 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1029 struct kvm_async_pf *work);
1030 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1031 struct kvm_async_pf *work);
1032 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1033 struct kvm_async_pf *work);
1034 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
1035 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
1037 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
1039 int kvm_is_in_guest(void);
1041 void kvm_pmu_init(struct kvm_vcpu *vcpu);
1042 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
1043 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
1044 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
1045 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
1046 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
1047 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
1048 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
1049 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
1050 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
1052 #endif /* _ASM_X86_KVM_HOST_H */