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 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
134 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
152 #include <asm/kvm_emulate.h>
154 #define KVM_NR_MEM_OBJS 40
156 #define KVM_NR_DB_REGS 4
158 #define DR6_BD (1 << 13)
159 #define DR6_BS (1 << 14)
160 #define DR6_FIXED_1 0xffff0ff0
161 #define DR6_VOLATILE 0x0000e00f
163 #define DR7_BP_EN_MASK 0x000000ff
164 #define DR7_GE (1 << 9)
165 #define DR7_GD (1 << 13)
166 #define DR7_FIXED_1 0x00000400
167 #define DR7_VOLATILE 0xffff23ff
169 /* apic attention bits */
170 #define KVM_APIC_CHECK_VAPIC 0
172 * The following bit is set with PV-EOI, unset on EOI.
173 * We detect PV-EOI changes by guest by comparing
174 * this bit with PV-EOI in guest memory.
175 * See the implementation in apic_update_pv_eoi.
177 #define KVM_APIC_PV_EOI_PENDING 1
180 * We don't want allocation failures within the mmu code, so we preallocate
181 * enough memory for a single page fault in a cache.
183 struct kvm_mmu_memory_cache {
185 void *objects[KVM_NR_MEM_OBJS];
189 * kvm_mmu_page_role, below, is defined as:
191 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
192 * bits 4:7 - page table level for this shadow (1-4)
193 * bits 8:9 - page table quadrant for 2-level guests
194 * bit 16 - direct mapping of virtual to physical mapping at gfn
195 * used for real mode and two-dimensional paging
196 * bits 17:19 - common access permissions for all ptes in this shadow page
198 union kvm_mmu_page_role {
204 unsigned pad_for_nice_hex_output:6;
210 unsigned smep_andnot_wp:1;
214 struct kvm_mmu_page {
215 struct list_head link;
216 struct hlist_node hash_link;
219 * The following two entries are used to key the shadow page in the
223 union kvm_mmu_page_role role;
226 /* hold the gfn of each spte inside spt */
229 int root_count; /* Currently serving as active root */
230 unsigned int unsync_children;
231 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
233 /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */
234 unsigned long mmu_valid_gen;
236 DECLARE_BITMAP(unsync_child_bitmap, 512);
240 * Used out of the mmu-lock to avoid reading spte values while an
241 * update is in progress; see the comments in __get_spte_lockless().
243 int clear_spte_count;
246 /* Number of writes since the last time traversal visited this page. */
247 int write_flooding_count;
250 struct kvm_pio_request {
258 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
259 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
263 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
264 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
265 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
266 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
268 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
269 struct x86_exception *fault);
270 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
271 struct x86_exception *exception);
272 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
273 int (*sync_page)(struct kvm_vcpu *vcpu,
274 struct kvm_mmu_page *sp);
275 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
276 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
277 u64 *spte, const void *pte);
280 int shadow_root_level;
281 union kvm_mmu_page_role base_role;
285 * Bitmap; bit set = permission fault
286 * Byte index: page fault error code [4:1]
287 * Bit index: pte permissions in ACC_* format
293 u64 rsvd_bits_mask[2][4];
297 * Bitmap: bit set = last pte in walk
298 * index[0:1]: level (zero-based)
305 u64 pdptrs[4]; /* pae */
318 struct perf_event *perf_event;
319 struct kvm_vcpu *vcpu;
323 unsigned nr_arch_gp_counters;
324 unsigned nr_arch_fixed_counters;
325 unsigned available_event_types;
330 u64 counter_bitmask[2];
331 u64 global_ctrl_mask;
334 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
335 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
336 struct irq_work irq_work;
340 struct kvm_vcpu_arch {
342 * rip and regs accesses must go through
343 * kvm_{register,rip}_{read,write} functions.
345 unsigned long regs[NR_VCPU_REGS];
350 unsigned long cr0_guest_owned_bits;
354 unsigned long cr4_guest_owned_bits;
359 struct kvm_lapic *apic; /* kernel irqchip context */
360 unsigned long apic_attention;
361 int32_t apic_arb_prio;
363 u64 ia32_misc_enable_msr;
364 bool tpr_access_reporting;
367 * Paging state of the vcpu
369 * If the vcpu runs in guest mode with two level paging this still saves
370 * the paging mode of the l1 guest. This context is always used to
376 * Paging state of an L2 guest (used for nested npt)
378 * This context will save all necessary information to walk page tables
379 * of the an L2 guest. This context is only initialized for page table
380 * walking and not for faulting since we never handle l2 page faults on
383 struct kvm_mmu nested_mmu;
386 * Pointer to the mmu context currently used for
387 * gva_to_gpa translations.
389 struct kvm_mmu *walk_mmu;
391 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
392 struct kvm_mmu_memory_cache mmu_page_cache;
393 struct kvm_mmu_memory_cache mmu_page_header_cache;
395 struct fpu guest_fpu;
397 u64 guest_supported_xcr0;
398 u32 guest_xstate_size;
400 struct kvm_pio_request pio;
403 u8 event_exit_inst_len;
405 struct kvm_queued_exception {
413 struct kvm_queued_interrupt {
419 int halt_request; /* real mode on Intel only */
422 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
423 /* emulate context */
425 struct x86_emulate_ctxt emulate_ctxt;
426 bool emulate_regs_need_sync_to_vcpu;
427 bool emulate_regs_need_sync_from_vcpu;
428 int (*complete_userspace_io)(struct kvm_vcpu *vcpu);
431 struct pvclock_vcpu_time_info hv_clock;
432 unsigned int hw_tsc_khz;
433 struct gfn_to_hva_cache pv_time;
434 bool pv_time_enabled;
435 /* set guest stopped flag in pvclock flags field */
436 bool pvclock_set_guest_stopped_request;
442 struct gfn_to_hva_cache stime;
443 struct kvm_steal_time steal;
449 u64 tsc_offset_adjustment;
452 u8 this_tsc_generation;
454 bool tsc_always_catchup;
455 s8 virtual_tsc_shift;
456 u32 virtual_tsc_mult;
458 s64 ia32_tsc_adjust_msr;
460 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
461 unsigned nmi_pending; /* NMI queued after currently running handler */
462 bool nmi_injected; /* Trying to inject an NMI this entry */
464 struct mtrr_state_type mtrr_state;
468 unsigned long db[KVM_NR_DB_REGS];
471 unsigned long eff_db[KVM_NR_DB_REGS];
472 unsigned long guest_debug_dr7;
479 /* Cache MMIO info */
486 /* used for guest single stepping over the given code position */
487 unsigned long singlestep_rip;
489 /* fields used by HYPER-V emulation */
492 cpumask_var_t wbinvd_dirty_mask;
494 unsigned long last_retry_eip;
495 unsigned long last_retry_addr;
499 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
500 struct gfn_to_hva_cache data;
506 /* OSVW MSRs (AMD only) */
514 struct gfn_to_hva_cache data;
518 * Indicate whether the access faults on its page table in guest
519 * which is set when fix page fault and used to detect unhandeable
522 bool write_fault_to_shadow_pgtable;
524 /* set at EPT violation at this point */
525 unsigned long exit_qualification;
527 /* pv related host specific info */
533 struct kvm_lpage_info {
537 struct kvm_arch_memory_slot {
538 unsigned long *rmap[KVM_NR_PAGE_SIZES];
539 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
542 struct kvm_apic_map {
545 /* fields bellow are used to decode ldr values in different modes */
546 u32 cid_shift, cid_mask, lid_mask;
547 struct kvm_lapic *phys_map[256];
548 /* first index is cluster id second is cpu id in a cluster */
549 struct kvm_lapic *logical_map[16][16];
553 unsigned int n_used_mmu_pages;
554 unsigned int n_requested_mmu_pages;
555 unsigned int n_max_mmu_pages;
556 unsigned int indirect_shadow_pages;
557 unsigned long mmu_valid_gen;
558 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
560 * Hash table of struct kvm_mmu_page.
562 struct list_head active_mmu_pages;
563 struct list_head zapped_obsolete_pages;
565 struct list_head assigned_dev_head;
566 struct iommu_domain *iommu_domain;
567 bool iommu_noncoherent;
568 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA
569 atomic_t noncoherent_dma_count;
570 struct kvm_pic *vpic;
571 struct kvm_ioapic *vioapic;
572 struct kvm_pit *vpit;
573 int vapics_in_nmi_mode;
574 struct mutex apic_map_lock;
575 struct kvm_apic_map *apic_map;
577 unsigned int tss_addr;
578 struct page *apic_access_page;
582 struct page *ept_identity_pagetable;
583 bool ept_identity_pagetable_done;
584 gpa_t ept_identity_map_addr;
586 unsigned long irq_sources_bitmap;
588 raw_spinlock_t tsc_write_lock;
595 u8 cur_tsc_generation;
596 int nr_vcpus_matched_tsc;
598 spinlock_t pvclock_gtod_sync_lock;
599 bool use_master_clock;
600 u64 master_kernel_ns;
601 cycle_t master_cycle_now;
603 struct kvm_xen_hvm_config xen_hvm_config;
605 /* fields used by HYPER-V emulation */
610 #ifdef CONFIG_KVM_MMU_AUDIT
616 u32 mmu_shadow_zapped;
624 u32 remote_tlb_flush;
628 struct kvm_vcpu_stat {
638 u32 irq_window_exits;
639 u32 nmi_window_exits;
642 u32 request_irq_exits;
644 u32 host_state_reload;
648 u32 insn_emulation_fail;
654 struct x86_instruction_info;
663 int (*cpu_has_kvm_support)(void); /* __init */
664 int (*disabled_by_bios)(void); /* __init */
665 int (*hardware_enable)(void *dummy);
666 void (*hardware_disable)(void *dummy);
667 void (*check_processor_compatibility)(void *rtn);
668 int (*hardware_setup)(void); /* __init */
669 void (*hardware_unsetup)(void); /* __exit */
670 bool (*cpu_has_accelerated_tpr)(void);
671 void (*cpuid_update)(struct kvm_vcpu *vcpu);
673 /* Create, but do not attach this VCPU */
674 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
675 void (*vcpu_free)(struct kvm_vcpu *vcpu);
676 void (*vcpu_reset)(struct kvm_vcpu *vcpu);
678 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
679 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
680 void (*vcpu_put)(struct kvm_vcpu *vcpu);
682 void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu);
683 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
684 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
685 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
686 void (*get_segment)(struct kvm_vcpu *vcpu,
687 struct kvm_segment *var, int seg);
688 int (*get_cpl)(struct kvm_vcpu *vcpu);
689 void (*set_segment)(struct kvm_vcpu *vcpu,
690 struct kvm_segment *var, int seg);
691 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
692 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
693 void (*decache_cr3)(struct kvm_vcpu *vcpu);
694 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
695 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
696 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
697 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
698 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
699 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
700 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
701 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
702 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
703 u64 (*get_dr6)(struct kvm_vcpu *vcpu);
704 void (*set_dr6)(struct kvm_vcpu *vcpu, unsigned long value);
705 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
706 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
707 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
708 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
709 void (*fpu_activate)(struct kvm_vcpu *vcpu);
710 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
712 void (*tlb_flush)(struct kvm_vcpu *vcpu);
714 void (*run)(struct kvm_vcpu *vcpu);
715 int (*handle_exit)(struct kvm_vcpu *vcpu);
716 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
717 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
718 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
719 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
720 unsigned char *hypercall_addr);
721 void (*set_irq)(struct kvm_vcpu *vcpu);
722 void (*set_nmi)(struct kvm_vcpu *vcpu);
723 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
724 bool has_error_code, u32 error_code,
726 void (*cancel_injection)(struct kvm_vcpu *vcpu);
727 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
728 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
729 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
730 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
731 int (*enable_nmi_window)(struct kvm_vcpu *vcpu);
732 int (*enable_irq_window)(struct kvm_vcpu *vcpu);
733 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
734 int (*vm_has_apicv)(struct kvm *kvm);
735 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
736 void (*hwapic_isr_update)(struct kvm *kvm, int isr);
737 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
738 void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set);
739 void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
740 void (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
741 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
742 int (*get_tdp_level)(void);
743 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
744 int (*get_lpage_level)(void);
745 bool (*rdtscp_supported)(void);
746 bool (*invpcid_supported)(void);
747 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
749 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
751 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
753 bool (*has_wbinvd_exit)(void);
755 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
756 u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu);
757 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
759 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
760 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc);
762 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
764 int (*check_intercept)(struct kvm_vcpu *vcpu,
765 struct x86_instruction_info *info,
766 enum x86_intercept_stage stage);
767 void (*handle_external_intr)(struct kvm_vcpu *vcpu);
770 struct kvm_arch_async_pf {
777 extern struct kvm_x86_ops *kvm_x86_ops;
779 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
782 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
785 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
787 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
790 int kvm_mmu_module_init(void);
791 void kvm_mmu_module_exit(void);
793 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
794 int kvm_mmu_create(struct kvm_vcpu *vcpu);
795 void kvm_mmu_setup(struct kvm_vcpu *vcpu);
796 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
797 u64 dirty_mask, u64 nx_mask, u64 x_mask);
799 void kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
800 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
801 void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
802 struct kvm_memory_slot *slot,
803 gfn_t gfn_offset, unsigned long mask);
804 void kvm_mmu_zap_all(struct kvm *kvm);
805 void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm);
806 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
807 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
809 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
811 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
812 const void *val, int bytes);
813 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
815 extern bool tdp_enabled;
817 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
819 /* control of guest tsc rate supported? */
820 extern bool kvm_has_tsc_control;
821 /* minimum supported tsc_khz for guests */
822 extern u32 kvm_min_guest_tsc_khz;
823 /* maximum supported tsc_khz for guests */
824 extern u32 kvm_max_guest_tsc_khz;
826 enum emulation_result {
827 EMULATE_DONE, /* no further processing */
828 EMULATE_USER_EXIT, /* kvm_run ready for userspace exit */
829 EMULATE_FAIL, /* can't emulate this instruction */
832 #define EMULTYPE_NO_DECODE (1 << 0)
833 #define EMULTYPE_TRAP_UD (1 << 1)
834 #define EMULTYPE_SKIP (1 << 2)
835 #define EMULTYPE_RETRY (1 << 3)
836 #define EMULTYPE_NO_REEXECUTE (1 << 4)
837 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
838 int emulation_type, void *insn, int insn_len);
840 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
843 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
846 void kvm_enable_efer_bits(u64);
847 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer);
848 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
849 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
851 struct x86_emulate_ctxt;
853 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
854 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
855 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
856 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
858 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
859 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
860 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, unsigned int vector);
862 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
863 int reason, bool has_error_code, u32 error_code);
865 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
866 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
867 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
868 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
869 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
870 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
871 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
872 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
873 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
874 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
876 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
877 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
879 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
880 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
881 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
883 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
884 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
885 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
886 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
887 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
888 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
889 gfn_t gfn, void *data, int offset, int len,
891 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
892 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
894 static inline int __kvm_irq_line_state(unsigned long *irq_state,
895 int irq_source_id, int level)
897 /* Logical OR for level trig interrupt */
899 __set_bit(irq_source_id, irq_state);
901 __clear_bit(irq_source_id, irq_state);
903 return !!(*irq_state);
906 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
907 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
909 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
911 int fx_init(struct kvm_vcpu *vcpu);
913 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
914 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
915 const u8 *new, int bytes);
916 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
917 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
918 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
919 int kvm_mmu_load(struct kvm_vcpu *vcpu);
920 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
921 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
922 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
923 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
924 struct x86_exception *exception);
925 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
926 struct x86_exception *exception);
927 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
928 struct x86_exception *exception);
929 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
930 struct x86_exception *exception);
932 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
934 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
935 void *insn, int insn_len);
936 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
937 void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu);
939 void kvm_enable_tdp(void);
940 void kvm_disable_tdp(void);
942 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
947 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
949 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
951 return (struct kvm_mmu_page *)page_private(page);
954 static inline u16 kvm_read_ldt(void)
957 asm("sldt %0" : "=g"(ldt));
961 static inline void kvm_load_ldt(u16 sel)
963 asm("lldt %0" : : "rm"(sel));
967 static inline unsigned long read_msr(unsigned long msr)
976 static inline u32 get_rdx_init_val(void)
978 return 0x600; /* P6 family */
981 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
983 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
986 #define TSS_IOPB_BASE_OFFSET 0x66
987 #define TSS_BASE_SIZE 0x68
988 #define TSS_IOPB_SIZE (65536 / 8)
989 #define TSS_REDIRECTION_SIZE (256 / 8)
990 #define RMODE_TSS_SIZE \
991 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
994 TASK_SWITCH_CALL = 0,
995 TASK_SWITCH_IRET = 1,
997 TASK_SWITCH_GATE = 3,
1000 #define HF_GIF_MASK (1 << 0)
1001 #define HF_HIF_MASK (1 << 1)
1002 #define HF_VINTR_MASK (1 << 2)
1003 #define HF_NMI_MASK (1 << 3)
1004 #define HF_IRET_MASK (1 << 4)
1005 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
1008 * Hardware virtualization extension instructions may fault if a
1009 * reboot turns off virtualization while processes are running.
1010 * Trap the fault and ignore the instruction if that happens.
1012 asmlinkage void kvm_spurious_fault(void);
1014 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
1015 "666: " insn "\n\t" \
1017 ".pushsection .fixup, \"ax\" \n" \
1019 cleanup_insn "\n\t" \
1020 "cmpb $0, kvm_rebooting \n\t" \
1022 __ASM_SIZE(push) " $666b \n\t" \
1023 "call kvm_spurious_fault \n\t" \
1024 ".popsection \n\t" \
1025 _ASM_EXTABLE(666b, 667b)
1027 #define __kvm_handle_fault_on_reboot(insn) \
1028 ____kvm_handle_fault_on_reboot(insn, "")
1030 #define KVM_ARCH_WANT_MMU_NOTIFIER
1031 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
1032 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
1033 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
1034 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
1035 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
1036 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
1037 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v);
1038 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
1039 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
1040 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
1041 void kvm_vcpu_reset(struct kvm_vcpu *vcpu);
1043 void kvm_define_shared_msr(unsigned index, u32 msr);
1044 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
1046 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
1048 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1049 struct kvm_async_pf *work);
1050 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1051 struct kvm_async_pf *work);
1052 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1053 struct kvm_async_pf *work);
1054 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
1055 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
1057 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
1059 int kvm_is_in_guest(void);
1061 void kvm_pmu_init(struct kvm_vcpu *vcpu);
1062 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
1063 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
1064 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
1065 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
1066 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
1067 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
1068 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
1069 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
1070 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
1072 #endif /* _ASM_X86_KVM_HOST_H */