2 * Kernel-based Virtual Machine driver for Linux
4 * This header defines architecture specific interfaces, x86 version
6 * This work is licensed under the terms of the GNU GPL, version 2. See
7 * the COPYING file in the top-level directory.
11 #ifndef _ASM_X86_KVM_HOST_H
12 #define _ASM_X86_KVM_HOST_H
14 #include <linux/types.h>
16 #include <linux/mmu_notifier.h>
17 #include <linux/tracepoint.h>
18 #include <linux/cpumask.h>
19 #include <linux/irq_work.h>
21 #include <linux/kvm.h>
22 #include <linux/kvm_para.h>
23 #include <linux/kvm_types.h>
24 #include <linux/perf_event.h>
25 #include <linux/pvclock_gtod.h>
26 #include <linux/clocksource.h>
28 #include <asm/pvclock-abi.h>
31 #include <asm/msr-index.h>
34 #define KVM_MAX_VCPUS 254
35 #define KVM_SOFT_MAX_VCPUS 160
36 #define KVM_MEMORY_SLOTS 32
37 /* memory slots that does not exposed to userspace */
38 #define KVM_PRIVATE_MEM_SLOTS 4
39 #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
41 #define KVM_MMIO_SIZE 16
43 #define KVM_PIO_PAGE_OFFSET 1
44 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
46 #define CR0_RESERVED_BITS \
47 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
48 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
49 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
51 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
52 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
53 #define CR3_PCID_ENABLED_RESERVED_BITS 0xFFFFFF0000000000ULL
54 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
55 0xFFFFFF0000000000ULL)
56 #define CR4_RESERVED_BITS \
57 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
58 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
59 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
60 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
61 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
63 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
67 #define INVALID_PAGE (~(hpa_t)0)
68 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
70 #define UNMAPPED_GVA (~(gpa_t)0)
72 /* KVM Hugepage definitions for x86 */
73 #define KVM_NR_PAGE_SIZES 3
74 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
75 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
76 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
77 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
78 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
80 #define SELECTOR_TI_MASK (1 << 2)
81 #define SELECTOR_RPL_MASK 0x03
85 #define KVM_PERMILLE_MMU_PAGES 20
86 #define KVM_MIN_ALLOC_MMU_PAGES 64
87 #define KVM_MMU_HASH_SHIFT 10
88 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
89 #define KVM_MIN_FREE_MMU_PAGES 5
90 #define KVM_REFILL_PAGES 25
91 #define KVM_MAX_CPUID_ENTRIES 80
92 #define KVM_NR_FIXED_MTRR_REGION 88
93 #define KVM_NR_VAR_MTRR 8
95 #define ASYNC_PF_PER_VCPU 64
97 extern raw_spinlock_t kvm_lock;
98 extern struct list_head vm_list;
128 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
146 #include <asm/kvm_emulate.h>
148 #define KVM_NR_MEM_OBJS 40
150 #define KVM_NR_DB_REGS 4
152 #define DR6_BD (1 << 13)
153 #define DR6_BS (1 << 14)
154 #define DR6_FIXED_1 0xffff0ff0
155 #define DR6_VOLATILE 0x0000e00f
157 #define DR7_BP_EN_MASK 0x000000ff
158 #define DR7_GE (1 << 9)
159 #define DR7_GD (1 << 13)
160 #define DR7_FIXED_1 0x00000400
161 #define DR7_VOLATILE 0xffff23ff
163 /* apic attention bits */
164 #define KVM_APIC_CHECK_VAPIC 0
166 * The following bit is set with PV-EOI, unset on EOI.
167 * We detect PV-EOI changes by guest by comparing
168 * this bit with PV-EOI in guest memory.
169 * See the implementation in apic_update_pv_eoi.
171 #define KVM_APIC_PV_EOI_PENDING 1
174 * We don't want allocation failures within the mmu code, so we preallocate
175 * enough memory for a single page fault in a cache.
177 struct kvm_mmu_memory_cache {
179 void *objects[KVM_NR_MEM_OBJS];
183 * kvm_mmu_page_role, below, is defined as:
185 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
186 * bits 4:7 - page table level for this shadow (1-4)
187 * bits 8:9 - page table quadrant for 2-level guests
188 * bit 16 - direct mapping of virtual to physical mapping at gfn
189 * used for real mode and two-dimensional paging
190 * bits 17:19 - common access permissions for all ptes in this shadow page
192 union kvm_mmu_page_role {
198 unsigned pad_for_nice_hex_output:6;
204 unsigned smep_andnot_wp:1;
208 struct kvm_mmu_page {
209 struct list_head link;
210 struct hlist_node hash_link;
213 * The following two entries are used to key the shadow page in the
217 union kvm_mmu_page_role role;
220 /* hold the gfn of each spte inside spt */
223 * One bit set per slot which has memory
224 * in this shadow page.
226 DECLARE_BITMAP(slot_bitmap, KVM_MEM_SLOTS_NUM);
228 int root_count; /* Currently serving as active root */
229 unsigned int unsync_children;
230 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
231 DECLARE_BITMAP(unsync_child_bitmap, 512);
234 int clear_spte_count;
237 int write_flooding_count;
240 struct kvm_pio_request {
248 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
249 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
253 void (*new_cr3)(struct kvm_vcpu *vcpu);
254 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
255 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
256 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
257 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
259 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
260 struct x86_exception *fault);
261 void (*free)(struct kvm_vcpu *vcpu);
262 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
263 struct x86_exception *exception);
264 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
265 int (*sync_page)(struct kvm_vcpu *vcpu,
266 struct kvm_mmu_page *sp);
267 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
268 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
269 u64 *spte, const void *pte);
272 int shadow_root_level;
273 union kvm_mmu_page_role base_role;
277 * Bitmap; bit set = permission fault
278 * Byte index: page fault error code [4:1]
279 * Bit index: pte permissions in ACC_* format
285 u64 rsvd_bits_mask[2][4];
288 * Bitmap: bit set = last pte in walk
289 * index[0:1]: level (zero-based)
296 u64 pdptrs[4]; /* pae */
309 struct perf_event *perf_event;
310 struct kvm_vcpu *vcpu;
314 unsigned nr_arch_gp_counters;
315 unsigned nr_arch_fixed_counters;
316 unsigned available_event_types;
321 u64 counter_bitmask[2];
322 u64 global_ctrl_mask;
324 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
325 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
326 struct irq_work irq_work;
330 struct kvm_vcpu_arch {
332 * rip and regs accesses must go through
333 * kvm_{register,rip}_{read,write} functions.
335 unsigned long regs[NR_VCPU_REGS];
340 unsigned long cr0_guest_owned_bits;
344 unsigned long cr4_guest_owned_bits;
349 struct kvm_lapic *apic; /* kernel irqchip context */
350 unsigned long apic_attention;
351 int32_t apic_arb_prio;
354 u64 ia32_misc_enable_msr;
355 bool tpr_access_reporting;
358 * Paging state of the vcpu
360 * If the vcpu runs in guest mode with two level paging this still saves
361 * the paging mode of the l1 guest. This context is always used to
367 * Paging state of an L2 guest (used for nested npt)
369 * This context will save all necessary information to walk page tables
370 * of the an L2 guest. This context is only initialized for page table
371 * walking and not for faulting since we never handle l2 page faults on
374 struct kvm_mmu nested_mmu;
377 * Pointer to the mmu context currently used for
378 * gva_to_gpa translations.
380 struct kvm_mmu *walk_mmu;
382 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
383 struct kvm_mmu_memory_cache mmu_page_cache;
384 struct kvm_mmu_memory_cache mmu_page_header_cache;
386 struct fpu guest_fpu;
389 struct kvm_pio_request pio;
392 u8 event_exit_inst_len;
394 struct kvm_queued_exception {
402 struct kvm_queued_interrupt {
408 int halt_request; /* real mode on Intel only */
411 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
412 /* emulate context */
414 struct x86_emulate_ctxt emulate_ctxt;
415 bool emulate_regs_need_sync_to_vcpu;
416 bool emulate_regs_need_sync_from_vcpu;
417 int (*complete_userspace_io)(struct kvm_vcpu *vcpu);
420 struct pvclock_vcpu_time_info hv_clock;
421 unsigned int hw_tsc_khz;
422 unsigned int time_offset;
423 struct page *time_page;
424 /* set guest stopped flag in pvclock flags field */
425 bool pvclock_set_guest_stopped_request;
431 struct gfn_to_hva_cache stime;
432 struct kvm_steal_time steal;
438 u64 tsc_offset_adjustment;
441 u8 this_tsc_generation;
443 bool tsc_always_catchup;
444 s8 virtual_tsc_shift;
445 u32 virtual_tsc_mult;
448 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
449 unsigned nmi_pending; /* NMI queued after currently running handler */
450 bool nmi_injected; /* Trying to inject an NMI this entry */
452 struct mtrr_state_type mtrr_state;
456 unsigned long db[KVM_NR_DB_REGS];
459 unsigned long eff_db[KVM_NR_DB_REGS];
460 unsigned long guest_debug_dr7;
467 /* Cache MMIO info */
474 /* used for guest single stepping over the given code position */
475 unsigned long singlestep_rip;
477 /* fields used by HYPER-V emulation */
480 cpumask_var_t wbinvd_dirty_mask;
482 unsigned long last_retry_eip;
483 unsigned long last_retry_addr;
487 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
488 struct gfn_to_hva_cache data;
494 /* OSVW MSRs (AMD only) */
502 struct gfn_to_hva_cache data;
506 struct kvm_lpage_info {
510 struct kvm_arch_memory_slot {
511 unsigned long *rmap[KVM_NR_PAGE_SIZES];
512 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
515 struct kvm_apic_map {
518 /* fields bellow are used to decode ldr values in different modes */
519 u32 cid_shift, cid_mask, lid_mask;
520 struct kvm_lapic *phys_map[256];
521 /* first index is cluster id second is cpu id in a cluster */
522 struct kvm_lapic *logical_map[16][16];
526 unsigned int n_used_mmu_pages;
527 unsigned int n_requested_mmu_pages;
528 unsigned int n_max_mmu_pages;
529 unsigned int indirect_shadow_pages;
530 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
532 * Hash table of struct kvm_mmu_page.
534 struct list_head active_mmu_pages;
535 struct list_head assigned_dev_head;
536 struct iommu_domain *iommu_domain;
538 struct kvm_pic *vpic;
539 struct kvm_ioapic *vioapic;
540 struct kvm_pit *vpit;
541 int vapics_in_nmi_mode;
542 struct mutex apic_map_lock;
543 struct kvm_apic_map *apic_map;
545 unsigned int tss_addr;
546 struct page *apic_access_page;
550 struct page *ept_identity_pagetable;
551 bool ept_identity_pagetable_done;
552 gpa_t ept_identity_map_addr;
554 unsigned long irq_sources_bitmap;
556 raw_spinlock_t tsc_write_lock;
563 u8 cur_tsc_generation;
564 int nr_vcpus_matched_tsc;
566 spinlock_t pvclock_gtod_sync_lock;
567 bool use_master_clock;
568 u64 master_kernel_ns;
569 cycle_t master_cycle_now;
571 struct kvm_xen_hvm_config xen_hvm_config;
573 /* fields used by HYPER-V emulation */
577 #ifdef CONFIG_KVM_MMU_AUDIT
583 u32 mmu_shadow_zapped;
591 u32 remote_tlb_flush;
595 struct kvm_vcpu_stat {
605 u32 irq_window_exits;
606 u32 nmi_window_exits;
609 u32 request_irq_exits;
611 u32 host_state_reload;
615 u32 insn_emulation_fail;
621 struct x86_instruction_info;
630 int (*cpu_has_kvm_support)(void); /* __init */
631 int (*disabled_by_bios)(void); /* __init */
632 int (*hardware_enable)(void *dummy);
633 void (*hardware_disable)(void *dummy);
634 void (*check_processor_compatibility)(void *rtn);
635 int (*hardware_setup)(void); /* __init */
636 void (*hardware_unsetup)(void); /* __exit */
637 bool (*cpu_has_accelerated_tpr)(void);
638 void (*cpuid_update)(struct kvm_vcpu *vcpu);
640 /* Create, but do not attach this VCPU */
641 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
642 void (*vcpu_free)(struct kvm_vcpu *vcpu);
643 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
645 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
646 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
647 void (*vcpu_put)(struct kvm_vcpu *vcpu);
649 void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu);
650 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
651 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
652 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
653 void (*get_segment)(struct kvm_vcpu *vcpu,
654 struct kvm_segment *var, int seg);
655 int (*get_cpl)(struct kvm_vcpu *vcpu);
656 void (*set_segment)(struct kvm_vcpu *vcpu,
657 struct kvm_segment *var, int seg);
658 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
659 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
660 void (*decache_cr3)(struct kvm_vcpu *vcpu);
661 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
662 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
663 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
664 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
665 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
666 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
667 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
668 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
669 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
670 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
671 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
672 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
673 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
674 void (*fpu_activate)(struct kvm_vcpu *vcpu);
675 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
677 void (*tlb_flush)(struct kvm_vcpu *vcpu);
679 void (*run)(struct kvm_vcpu *vcpu);
680 int (*handle_exit)(struct kvm_vcpu *vcpu);
681 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
682 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
683 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
684 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
685 unsigned char *hypercall_addr);
686 void (*set_irq)(struct kvm_vcpu *vcpu);
687 void (*set_nmi)(struct kvm_vcpu *vcpu);
688 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
689 bool has_error_code, u32 error_code,
691 void (*cancel_injection)(struct kvm_vcpu *vcpu);
692 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
693 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
694 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
695 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
696 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
697 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
698 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
699 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
700 int (*get_tdp_level)(void);
701 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
702 int (*get_lpage_level)(void);
703 bool (*rdtscp_supported)(void);
704 bool (*invpcid_supported)(void);
705 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
707 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
709 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
711 bool (*has_wbinvd_exit)(void);
713 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
714 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
716 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
717 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc);
719 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
721 int (*check_intercept)(struct kvm_vcpu *vcpu,
722 struct x86_instruction_info *info,
723 enum x86_intercept_stage stage);
726 struct kvm_arch_async_pf {
733 extern struct kvm_x86_ops *kvm_x86_ops;
735 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
738 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
741 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
743 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
746 int kvm_mmu_module_init(void);
747 void kvm_mmu_module_exit(void);
749 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
750 int kvm_mmu_create(struct kvm_vcpu *vcpu);
751 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
752 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
753 u64 dirty_mask, u64 nx_mask, u64 x_mask);
755 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
756 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
757 void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
758 struct kvm_memory_slot *slot,
759 gfn_t gfn_offset, unsigned long mask);
760 void kvm_mmu_zap_all(struct kvm *kvm);
761 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
762 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
764 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
766 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
767 const void *val, int bytes);
768 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
770 extern bool tdp_enabled;
772 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
774 /* control of guest tsc rate supported? */
775 extern bool kvm_has_tsc_control;
776 /* minimum supported tsc_khz for guests */
777 extern u32 kvm_min_guest_tsc_khz;
778 /* maximum supported tsc_khz for guests */
779 extern u32 kvm_max_guest_tsc_khz;
781 enum emulation_result {
782 EMULATE_DONE, /* no further processing */
783 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
784 EMULATE_FAIL, /* can't emulate this instruction */
787 #define EMULTYPE_NO_DECODE (1 << 0)
788 #define EMULTYPE_TRAP_UD (1 << 1)
789 #define EMULTYPE_SKIP (1 << 2)
790 #define EMULTYPE_RETRY (1 << 3)
791 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
792 int emulation_type, void *insn, int insn_len);
794 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
797 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
800 void kvm_enable_efer_bits(u64);
801 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
802 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
804 struct x86_emulate_ctxt;
806 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
807 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
808 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
809 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
811 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
812 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
814 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
815 int reason, bool has_error_code, u32 error_code);
817 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
818 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
819 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
820 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
821 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
822 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
823 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
824 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
825 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
826 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
828 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
829 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
831 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
832 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
833 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
835 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
836 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
837 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
838 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
839 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
840 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
841 gfn_t gfn, void *data, int offset, int len,
843 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
844 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
846 static inline int __kvm_irq_line_state(unsigned long *irq_state,
847 int irq_source_id, int level)
849 /* Logical OR for level trig interrupt */
851 __set_bit(irq_source_id, irq_state);
853 __clear_bit(irq_source_id, irq_state);
855 return !!(*irq_state);
858 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
859 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
861 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
863 int fx_init(struct kvm_vcpu *vcpu);
865 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
866 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
867 const u8 *new, int bytes);
868 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
869 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
870 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
871 int kvm_mmu_load(struct kvm_vcpu *vcpu);
872 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
873 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
874 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
875 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
876 struct x86_exception *exception);
877 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
878 struct x86_exception *exception);
879 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
880 struct x86_exception *exception);
881 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
882 struct x86_exception *exception);
884 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
886 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
887 void *insn, int insn_len);
888 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
890 void kvm_enable_tdp(void);
891 void kvm_disable_tdp(void);
893 int complete_pio(struct kvm_vcpu *vcpu);
894 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
896 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
901 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
903 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
905 return (struct kvm_mmu_page *)page_private(page);
908 static inline u16 kvm_read_ldt(void)
911 asm("sldt %0" : "=g"(ldt));
915 static inline void kvm_load_ldt(u16 sel)
917 asm("lldt %0" : : "rm"(sel));
921 static inline unsigned long read_msr(unsigned long msr)
930 static inline u32 get_rdx_init_val(void)
932 return 0x600; /* P6 family */
935 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
937 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
940 #define TSS_IOPB_BASE_OFFSET 0x66
941 #define TSS_BASE_SIZE 0x68
942 #define TSS_IOPB_SIZE (65536 / 8)
943 #define TSS_REDIRECTION_SIZE (256 / 8)
944 #define RMODE_TSS_SIZE \
945 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
948 TASK_SWITCH_CALL = 0,
949 TASK_SWITCH_IRET = 1,
951 TASK_SWITCH_GATE = 3,
954 #define HF_GIF_MASK (1 << 0)
955 #define HF_HIF_MASK (1 << 1)
956 #define HF_VINTR_MASK (1 << 2)
957 #define HF_NMI_MASK (1 << 3)
958 #define HF_IRET_MASK (1 << 4)
959 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
962 * Hardware virtualization extension instructions may fault if a
963 * reboot turns off virtualization while processes are running.
964 * Trap the fault and ignore the instruction if that happens.
966 asmlinkage void kvm_spurious_fault(void);
967 extern bool kvm_rebooting;
969 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
970 "666: " insn "\n\t" \
972 ".pushsection .fixup, \"ax\" \n" \
974 cleanup_insn "\n\t" \
975 "cmpb $0, kvm_rebooting \n\t" \
977 __ASM_SIZE(push) " $666b \n\t" \
978 "call kvm_spurious_fault \n\t" \
980 _ASM_EXTABLE(666b, 667b)
982 #define __kvm_handle_fault_on_reboot(insn) \
983 ____kvm_handle_fault_on_reboot(insn, "")
985 #define KVM_ARCH_WANT_MMU_NOTIFIER
986 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
987 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
988 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
989 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
990 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
991 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
992 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
993 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
994 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
996 void kvm_define_shared_msr(unsigned index, u32 msr);
997 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
999 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
1001 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1002 struct kvm_async_pf *work);
1003 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1004 struct kvm_async_pf *work);
1005 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1006 struct kvm_async_pf *work);
1007 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
1008 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
1010 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
1012 int kvm_is_in_guest(void);
1014 void kvm_pmu_init(struct kvm_vcpu *vcpu);
1015 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
1016 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
1017 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
1018 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
1019 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
1020 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data);
1021 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
1022 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
1023 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
1025 #endif /* _ASM_X86_KVM_HOST_H */