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>
26 #include <asm/pvclock-abi.h>
29 #include <asm/msr-index.h>
32 #define KVM_MAX_VCPUS 254
33 #define KVM_SOFT_MAX_VCPUS 160
34 #define KVM_MEMORY_SLOTS 32
35 /* memory slots that does not exposed to userspace */
36 #define KVM_PRIVATE_MEM_SLOTS 4
37 #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
39 #define KVM_MMIO_SIZE 16
41 #define KVM_PIO_PAGE_OFFSET 1
42 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
44 #define CR0_RESERVED_BITS \
45 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
46 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
47 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
49 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
50 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
51 #define CR3_PCID_ENABLED_RESERVED_BITS 0xFFFFFF0000000000ULL
52 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
53 0xFFFFFF0000000000ULL)
54 #define CR4_RESERVED_BITS \
55 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
56 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
57 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
58 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
59 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
61 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
65 #define INVALID_PAGE (~(hpa_t)0)
66 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
68 #define UNMAPPED_GVA (~(gpa_t)0)
70 /* KVM Hugepage definitions for x86 */
71 #define KVM_NR_PAGE_SIZES 3
72 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
73 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
74 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
75 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
76 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
94 #define SELECTOR_TI_MASK (1 << 2)
95 #define SELECTOR_RPL_MASK 0x03
99 #define KVM_PERMILLE_MMU_PAGES 20
100 #define KVM_MIN_ALLOC_MMU_PAGES 64
101 #define KVM_MMU_HASH_SHIFT 10
102 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
103 #define KVM_MIN_FREE_MMU_PAGES 5
104 #define KVM_REFILL_PAGES 25
105 #define KVM_MAX_CPUID_ENTRIES 80
106 #define KVM_NR_FIXED_MTRR_REGION 88
107 #define KVM_NR_VAR_MTRR 8
109 #define ASYNC_PF_PER_VCPU 64
111 extern raw_spinlock_t kvm_lock;
112 extern struct list_head vm_list;
142 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
160 #include <asm/kvm_emulate.h>
162 #define KVM_NR_MEM_OBJS 40
164 #define KVM_NR_DB_REGS 4
166 #define DR6_BD (1 << 13)
167 #define DR6_BS (1 << 14)
168 #define DR6_FIXED_1 0xffff0ff0
169 #define DR6_VOLATILE 0x0000e00f
171 #define DR7_BP_EN_MASK 0x000000ff
172 #define DR7_GE (1 << 9)
173 #define DR7_GD (1 << 13)
174 #define DR7_FIXED_1 0x00000400
175 #define DR7_VOLATILE 0xffff23ff
177 /* apic attention bits */
178 #define KVM_APIC_CHECK_VAPIC 0
180 * The following bit is set with PV-EOI, unset on EOI.
181 * We detect PV-EOI changes by guest by comparing
182 * this bit with PV-EOI in guest memory.
183 * See the implementation in apic_update_pv_eoi.
185 #define KVM_APIC_PV_EOI_PENDING 1
188 * We don't want allocation failures within the mmu code, so we preallocate
189 * enough memory for a single page fault in a cache.
191 struct kvm_mmu_memory_cache {
193 void *objects[KVM_NR_MEM_OBJS];
197 * kvm_mmu_page_role, below, is defined as:
199 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
200 * bits 4:7 - page table level for this shadow (1-4)
201 * bits 8:9 - page table quadrant for 2-level guests
202 * bit 16 - direct mapping of virtual to physical mapping at gfn
203 * used for real mode and two-dimensional paging
204 * bits 17:19 - common access permissions for all ptes in this shadow page
206 union kvm_mmu_page_role {
212 unsigned pad_for_nice_hex_output:6;
218 unsigned smep_andnot_wp:1;
222 struct kvm_mmu_page {
223 struct list_head link;
224 struct hlist_node hash_link;
227 * The following two entries are used to key the shadow page in the
231 union kvm_mmu_page_role role;
234 /* hold the gfn of each spte inside spt */
237 * One bit set per slot which has memory
238 * in this shadow page.
240 DECLARE_BITMAP(slot_bitmap, KVM_MEM_SLOTS_NUM);
242 int root_count; /* Currently serving as active root */
243 unsigned int unsync_children;
244 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
245 DECLARE_BITMAP(unsync_child_bitmap, 512);
248 int clear_spte_count;
251 int write_flooding_count;
254 struct kvm_pio_request {
262 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
263 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
267 void (*new_cr3)(struct kvm_vcpu *vcpu);
268 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
269 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
270 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
271 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
273 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
274 struct x86_exception *fault);
275 void (*free)(struct kvm_vcpu *vcpu);
276 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
277 struct x86_exception *exception);
278 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
279 int (*sync_page)(struct kvm_vcpu *vcpu,
280 struct kvm_mmu_page *sp);
281 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
282 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
283 u64 *spte, const void *pte);
286 int shadow_root_level;
287 union kvm_mmu_page_role base_role;
292 u64 rsvd_bits_mask[2][4];
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;
419 struct pvclock_vcpu_time_info hv_clock;
420 unsigned int hw_tsc_khz;
421 unsigned int time_offset;
422 struct page *time_page;
428 struct gfn_to_hva_cache stime;
429 struct kvm_steal_time steal;
435 u64 tsc_offset_adjustment;
438 u8 this_tsc_generation;
440 bool tsc_always_catchup;
441 s8 virtual_tsc_shift;
442 u32 virtual_tsc_mult;
445 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
446 unsigned nmi_pending; /* NMI queued after currently running handler */
447 bool nmi_injected; /* Trying to inject an NMI this entry */
449 struct mtrr_state_type mtrr_state;
453 unsigned long db[KVM_NR_DB_REGS];
456 unsigned long eff_db[KVM_NR_DB_REGS];
463 /* Cache MMIO info */
470 /* used for guest single stepping over the given code position */
471 unsigned long singlestep_rip;
473 /* fields used by HYPER-V emulation */
476 cpumask_var_t wbinvd_dirty_mask;
478 unsigned long last_retry_eip;
479 unsigned long last_retry_addr;
483 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
484 struct gfn_to_hva_cache data;
490 /* OSVW MSRs (AMD only) */
498 struct gfn_to_hva_cache data;
502 struct kvm_lpage_info {
503 unsigned long rmap_pde;
507 struct kvm_arch_memory_slot {
508 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
512 unsigned int n_used_mmu_pages;
513 unsigned int n_requested_mmu_pages;
514 unsigned int n_max_mmu_pages;
515 unsigned int indirect_shadow_pages;
516 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
518 * Hash table of struct kvm_mmu_page.
520 struct list_head active_mmu_pages;
521 struct list_head assigned_dev_head;
522 struct iommu_domain *iommu_domain;
524 struct kvm_pic *vpic;
525 struct kvm_ioapic *vioapic;
526 struct kvm_pit *vpit;
527 int vapics_in_nmi_mode;
529 unsigned int tss_addr;
530 struct page *apic_access_page;
534 struct page *ept_identity_pagetable;
535 bool ept_identity_pagetable_done;
536 gpa_t ept_identity_map_addr;
538 unsigned long irq_sources_bitmap;
540 raw_spinlock_t tsc_write_lock;
547 u8 cur_tsc_generation;
549 struct kvm_xen_hvm_config xen_hvm_config;
551 /* fields used by HYPER-V emulation */
555 #ifdef CONFIG_KVM_MMU_AUDIT
561 u32 mmu_shadow_zapped;
569 u32 remote_tlb_flush;
573 struct kvm_vcpu_stat {
583 u32 irq_window_exits;
584 u32 nmi_window_exits;
587 u32 request_irq_exits;
589 u32 host_state_reload;
593 u32 insn_emulation_fail;
599 struct x86_instruction_info;
602 int (*cpu_has_kvm_support)(void); /* __init */
603 int (*disabled_by_bios)(void); /* __init */
604 int (*hardware_enable)(void *dummy);
605 void (*hardware_disable)(void *dummy);
606 void (*check_processor_compatibility)(void *rtn);
607 int (*hardware_setup)(void); /* __init */
608 void (*hardware_unsetup)(void); /* __exit */
609 bool (*cpu_has_accelerated_tpr)(void);
610 void (*cpuid_update)(struct kvm_vcpu *vcpu);
612 /* Create, but do not attach this VCPU */
613 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
614 void (*vcpu_free)(struct kvm_vcpu *vcpu);
615 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
617 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
618 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
619 void (*vcpu_put)(struct kvm_vcpu *vcpu);
621 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
622 struct kvm_guest_debug *dbg);
623 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
624 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
625 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
626 void (*get_segment)(struct kvm_vcpu *vcpu,
627 struct kvm_segment *var, int seg);
628 int (*get_cpl)(struct kvm_vcpu *vcpu);
629 void (*set_segment)(struct kvm_vcpu *vcpu,
630 struct kvm_segment *var, int seg);
631 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
632 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
633 void (*decache_cr3)(struct kvm_vcpu *vcpu);
634 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
635 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
636 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
637 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
638 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
639 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
640 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
641 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
642 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
643 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
644 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
645 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
646 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
647 void (*fpu_activate)(struct kvm_vcpu *vcpu);
648 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
650 void (*tlb_flush)(struct kvm_vcpu *vcpu);
652 void (*run)(struct kvm_vcpu *vcpu);
653 int (*handle_exit)(struct kvm_vcpu *vcpu);
654 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
655 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
656 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
657 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
658 unsigned char *hypercall_addr);
659 void (*set_irq)(struct kvm_vcpu *vcpu);
660 void (*set_nmi)(struct kvm_vcpu *vcpu);
661 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
662 bool has_error_code, u32 error_code,
664 void (*cancel_injection)(struct kvm_vcpu *vcpu);
665 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
666 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
667 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
668 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
669 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
670 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
671 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
672 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
673 int (*get_tdp_level)(void);
674 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
675 int (*get_lpage_level)(void);
676 bool (*rdtscp_supported)(void);
677 bool (*invpcid_supported)(void);
678 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
680 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
682 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
684 bool (*has_wbinvd_exit)(void);
686 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
687 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
689 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
690 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu);
692 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
694 int (*check_intercept)(struct kvm_vcpu *vcpu,
695 struct x86_instruction_info *info,
696 enum x86_intercept_stage stage);
699 struct kvm_arch_async_pf {
706 extern struct kvm_x86_ops *kvm_x86_ops;
708 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
711 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
714 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
716 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
719 int kvm_mmu_module_init(void);
720 void kvm_mmu_module_exit(void);
722 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
723 int kvm_mmu_create(struct kvm_vcpu *vcpu);
724 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
725 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
726 u64 dirty_mask, u64 nx_mask, u64 x_mask);
728 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
729 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
730 void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
731 struct kvm_memory_slot *slot,
732 gfn_t gfn_offset, unsigned long mask);
733 void kvm_mmu_zap_all(struct kvm *kvm);
734 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
735 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
737 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
739 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
740 const void *val, int bytes);
741 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
743 extern bool tdp_enabled;
745 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
747 /* control of guest tsc rate supported? */
748 extern bool kvm_has_tsc_control;
749 /* minimum supported tsc_khz for guests */
750 extern u32 kvm_min_guest_tsc_khz;
751 /* maximum supported tsc_khz for guests */
752 extern u32 kvm_max_guest_tsc_khz;
754 enum emulation_result {
755 EMULATE_DONE, /* no further processing */
756 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
757 EMULATE_FAIL, /* can't emulate this instruction */
760 #define EMULTYPE_NO_DECODE (1 << 0)
761 #define EMULTYPE_TRAP_UD (1 << 1)
762 #define EMULTYPE_SKIP (1 << 2)
763 #define EMULTYPE_RETRY (1 << 3)
764 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
765 int emulation_type, void *insn, int insn_len);
767 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
770 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
773 void kvm_enable_efer_bits(u64);
774 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
775 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
777 struct x86_emulate_ctxt;
779 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
780 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
781 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
782 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
784 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
785 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
787 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
788 int reason, bool has_error_code, u32 error_code);
790 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
791 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
792 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
793 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
794 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
795 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
796 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
797 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
798 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
799 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
801 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
802 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
804 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
805 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
806 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
808 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
809 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
810 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
811 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
812 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
813 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
814 gfn_t gfn, void *data, int offset, int len,
816 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
817 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
819 static inline int __kvm_irq_line_state(unsigned long *irq_state,
820 int irq_source_id, int level)
822 /* Logical OR for level trig interrupt */
824 __set_bit(irq_source_id, irq_state);
826 __clear_bit(irq_source_id, irq_state);
828 return !!(*irq_state);
831 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
832 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
834 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
836 int fx_init(struct kvm_vcpu *vcpu);
838 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
839 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
840 const u8 *new, int bytes);
841 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
842 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
843 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
844 int kvm_mmu_load(struct kvm_vcpu *vcpu);
845 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
846 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
847 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
848 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
849 struct x86_exception *exception);
850 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
851 struct x86_exception *exception);
852 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
853 struct x86_exception *exception);
854 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
855 struct x86_exception *exception);
857 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
859 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
860 void *insn, int insn_len);
861 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
863 void kvm_enable_tdp(void);
864 void kvm_disable_tdp(void);
866 int complete_pio(struct kvm_vcpu *vcpu);
867 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
869 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
874 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
876 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
878 return (struct kvm_mmu_page *)page_private(page);
881 static inline u16 kvm_read_ldt(void)
884 asm("sldt %0" : "=g"(ldt));
888 static inline void kvm_load_ldt(u16 sel)
890 asm("lldt %0" : : "rm"(sel));
894 static inline unsigned long read_msr(unsigned long msr)
903 static inline u32 get_rdx_init_val(void)
905 return 0x600; /* P6 family */
908 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
910 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
913 #define TSS_IOPB_BASE_OFFSET 0x66
914 #define TSS_BASE_SIZE 0x68
915 #define TSS_IOPB_SIZE (65536 / 8)
916 #define TSS_REDIRECTION_SIZE (256 / 8)
917 #define RMODE_TSS_SIZE \
918 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
921 TASK_SWITCH_CALL = 0,
922 TASK_SWITCH_IRET = 1,
924 TASK_SWITCH_GATE = 3,
927 #define HF_GIF_MASK (1 << 0)
928 #define HF_HIF_MASK (1 << 1)
929 #define HF_VINTR_MASK (1 << 2)
930 #define HF_NMI_MASK (1 << 3)
931 #define HF_IRET_MASK (1 << 4)
932 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
935 * Hardware virtualization extension instructions may fault if a
936 * reboot turns off virtualization while processes are running.
937 * Trap the fault and ignore the instruction if that happens.
939 asmlinkage void kvm_spurious_fault(void);
940 extern bool kvm_rebooting;
942 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
943 "666: " insn "\n\t" \
945 ".pushsection .fixup, \"ax\" \n" \
947 cleanup_insn "\n\t" \
948 "cmpb $0, kvm_rebooting \n\t" \
950 __ASM_SIZE(push) " $666b \n\t" \
951 "call kvm_spurious_fault \n\t" \
953 _ASM_EXTABLE(666b, 667b)
955 #define __kvm_handle_fault_on_reboot(insn) \
956 ____kvm_handle_fault_on_reboot(insn, "")
958 #define KVM_ARCH_WANT_MMU_NOTIFIER
959 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
960 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
961 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
962 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
963 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
964 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
965 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
966 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
968 void kvm_define_shared_msr(unsigned index, u32 msr);
969 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
971 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
973 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
974 struct kvm_async_pf *work);
975 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
976 struct kvm_async_pf *work);
977 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
978 struct kvm_async_pf *work);
979 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
980 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
982 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
984 int kvm_is_in_guest(void);
986 void kvm_pmu_init(struct kvm_vcpu *vcpu);
987 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
988 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
989 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
990 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
991 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
992 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data);
993 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
994 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
995 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
997 #endif /* _ASM_X86_KVM_HOST_H */