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_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
52 0xFFFFFF0000000000ULL)
53 #define CR4_RESERVED_BITS \
54 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
55 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
56 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR \
57 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
58 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
60 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
64 #define INVALID_PAGE (~(hpa_t)0)
65 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
67 #define UNMAPPED_GVA (~(gpa_t)0)
69 /* KVM Hugepage definitions for x86 */
70 #define KVM_NR_PAGE_SIZES 3
71 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
72 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
73 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
74 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
75 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
93 #define SELECTOR_TI_MASK (1 << 2)
94 #define SELECTOR_RPL_MASK 0x03
98 #define KVM_PERMILLE_MMU_PAGES 20
99 #define KVM_MIN_ALLOC_MMU_PAGES 64
100 #define KVM_MMU_HASH_SHIFT 10
101 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
102 #define KVM_MIN_FREE_MMU_PAGES 5
103 #define KVM_REFILL_PAGES 25
104 #define KVM_MAX_CPUID_ENTRIES 80
105 #define KVM_NR_FIXED_MTRR_REGION 88
106 #define KVM_NR_VAR_MTRR 8
108 #define ASYNC_PF_PER_VCPU 64
110 extern raw_spinlock_t kvm_lock;
111 extern struct list_head vm_list;
141 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
159 #include <asm/kvm_emulate.h>
161 #define KVM_NR_MEM_OBJS 40
163 #define KVM_NR_DB_REGS 4
165 #define DR6_BD (1 << 13)
166 #define DR6_BS (1 << 14)
167 #define DR6_FIXED_1 0xffff0ff0
168 #define DR6_VOLATILE 0x0000e00f
170 #define DR7_BP_EN_MASK 0x000000ff
171 #define DR7_GE (1 << 9)
172 #define DR7_GD (1 << 13)
173 #define DR7_FIXED_1 0x00000400
174 #define DR7_VOLATILE 0xffff23ff
176 /* apic attention bits */
177 #define KVM_APIC_CHECK_VAPIC 0
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 * One bit set per slot which has memory
230 * in this shadow page.
232 DECLARE_BITMAP(slot_bitmap, KVM_MEM_SLOTS_NUM);
234 int root_count; /* Currently serving as active root */
235 unsigned int unsync_children;
236 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
237 DECLARE_BITMAP(unsync_child_bitmap, 512);
240 int clear_spte_count;
243 int write_flooding_count;
246 struct kvm_pio_request {
254 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
255 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
259 void (*new_cr3)(struct kvm_vcpu *vcpu);
260 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
261 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
262 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
263 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
265 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
266 struct x86_exception *fault);
267 void (*free)(struct kvm_vcpu *vcpu);
268 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
269 struct x86_exception *exception);
270 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
271 int (*sync_page)(struct kvm_vcpu *vcpu,
272 struct kvm_mmu_page *sp);
273 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
274 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
275 u64 *spte, const void *pte);
278 int shadow_root_level;
279 union kvm_mmu_page_role base_role;
284 u64 rsvd_bits_mask[2][4];
288 u64 pdptrs[4]; /* pae */
301 struct perf_event *perf_event;
302 struct kvm_vcpu *vcpu;
306 unsigned nr_arch_gp_counters;
307 unsigned nr_arch_fixed_counters;
308 unsigned available_event_types;
313 u64 counter_bitmask[2];
314 u64 global_ctrl_mask;
316 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
317 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
318 struct irq_work irq_work;
322 struct kvm_vcpu_arch {
324 * rip and regs accesses must go through
325 * kvm_{register,rip}_{read,write} functions.
327 unsigned long regs[NR_VCPU_REGS];
332 unsigned long cr0_guest_owned_bits;
336 unsigned long cr4_guest_owned_bits;
341 struct kvm_lapic *apic; /* kernel irqchip context */
342 unsigned long apic_attention;
343 int32_t apic_arb_prio;
346 u64 ia32_misc_enable_msr;
347 bool tpr_access_reporting;
350 * Paging state of the vcpu
352 * If the vcpu runs in guest mode with two level paging this still saves
353 * the paging mode of the l1 guest. This context is always used to
359 * Paging state of an L2 guest (used for nested npt)
361 * This context will save all necessary information to walk page tables
362 * of the an L2 guest. This context is only initialized for page table
363 * walking and not for faulting since we never handle l2 page faults on
366 struct kvm_mmu nested_mmu;
369 * Pointer to the mmu context currently used for
370 * gva_to_gpa translations.
372 struct kvm_mmu *walk_mmu;
374 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
375 struct kvm_mmu_memory_cache mmu_page_cache;
376 struct kvm_mmu_memory_cache mmu_page_header_cache;
378 struct fpu guest_fpu;
381 struct kvm_pio_request pio;
384 u8 event_exit_inst_len;
386 struct kvm_queued_exception {
394 struct kvm_queued_interrupt {
400 int halt_request; /* real mode on Intel only */
403 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
404 /* emulate context */
406 struct x86_emulate_ctxt emulate_ctxt;
407 bool emulate_regs_need_sync_to_vcpu;
408 bool emulate_regs_need_sync_from_vcpu;
411 struct pvclock_vcpu_time_info hv_clock;
412 unsigned int hw_tsc_khz;
413 unsigned int time_offset;
414 struct page *time_page;
420 struct gfn_to_hva_cache stime;
421 struct kvm_steal_time steal;
427 u64 tsc_offset_adjustment;
430 u8 this_tsc_generation;
432 bool tsc_always_catchup;
433 s8 virtual_tsc_shift;
434 u32 virtual_tsc_mult;
437 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
438 unsigned nmi_pending; /* NMI queued after currently running handler */
439 bool nmi_injected; /* Trying to inject an NMI this entry */
441 struct mtrr_state_type mtrr_state;
445 unsigned long db[KVM_NR_DB_REGS];
448 unsigned long eff_db[KVM_NR_DB_REGS];
455 /* Cache MMIO info */
462 /* used for guest single stepping over the given code position */
463 unsigned long singlestep_rip;
465 /* fields used by HYPER-V emulation */
468 cpumask_var_t wbinvd_dirty_mask;
470 unsigned long last_retry_eip;
471 unsigned long last_retry_addr;
475 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
476 struct gfn_to_hva_cache data;
482 /* OSVW MSRs (AMD only) */
489 struct kvm_lpage_info {
490 unsigned long rmap_pde;
494 struct kvm_arch_memory_slot {
495 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
499 unsigned int n_used_mmu_pages;
500 unsigned int n_requested_mmu_pages;
501 unsigned int n_max_mmu_pages;
502 unsigned int indirect_shadow_pages;
503 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
505 * Hash table of struct kvm_mmu_page.
507 struct list_head active_mmu_pages;
508 struct list_head assigned_dev_head;
509 struct iommu_domain *iommu_domain;
511 struct kvm_pic *vpic;
512 struct kvm_ioapic *vioapic;
513 struct kvm_pit *vpit;
514 int vapics_in_nmi_mode;
516 unsigned int tss_addr;
517 struct page *apic_access_page;
521 struct page *ept_identity_pagetable;
522 bool ept_identity_pagetable_done;
523 gpa_t ept_identity_map_addr;
525 unsigned long irq_sources_bitmap;
527 raw_spinlock_t tsc_write_lock;
534 u8 cur_tsc_generation;
536 struct kvm_xen_hvm_config xen_hvm_config;
538 /* fields used by HYPER-V emulation */
542 #ifdef CONFIG_KVM_MMU_AUDIT
548 u32 mmu_shadow_zapped;
556 u32 remote_tlb_flush;
560 struct kvm_vcpu_stat {
570 u32 irq_window_exits;
571 u32 nmi_window_exits;
574 u32 request_irq_exits;
576 u32 host_state_reload;
580 u32 insn_emulation_fail;
586 struct x86_instruction_info;
589 int (*cpu_has_kvm_support)(void); /* __init */
590 int (*disabled_by_bios)(void); /* __init */
591 int (*hardware_enable)(void *dummy);
592 void (*hardware_disable)(void *dummy);
593 void (*check_processor_compatibility)(void *rtn);
594 int (*hardware_setup)(void); /* __init */
595 void (*hardware_unsetup)(void); /* __exit */
596 bool (*cpu_has_accelerated_tpr)(void);
597 void (*cpuid_update)(struct kvm_vcpu *vcpu);
599 /* Create, but do not attach this VCPU */
600 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
601 void (*vcpu_free)(struct kvm_vcpu *vcpu);
602 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
604 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
605 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
606 void (*vcpu_put)(struct kvm_vcpu *vcpu);
608 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
609 struct kvm_guest_debug *dbg);
610 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
611 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
612 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
613 void (*get_segment)(struct kvm_vcpu *vcpu,
614 struct kvm_segment *var, int seg);
615 int (*get_cpl)(struct kvm_vcpu *vcpu);
616 void (*set_segment)(struct kvm_vcpu *vcpu,
617 struct kvm_segment *var, int seg);
618 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
619 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
620 void (*decache_cr3)(struct kvm_vcpu *vcpu);
621 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
622 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
623 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
624 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
625 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
626 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
627 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
628 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
629 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
630 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
631 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
632 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
633 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
634 void (*fpu_activate)(struct kvm_vcpu *vcpu);
635 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
637 void (*tlb_flush)(struct kvm_vcpu *vcpu);
639 void (*run)(struct kvm_vcpu *vcpu);
640 int (*handle_exit)(struct kvm_vcpu *vcpu);
641 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
642 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
643 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
644 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
645 unsigned char *hypercall_addr);
646 void (*set_irq)(struct kvm_vcpu *vcpu);
647 void (*set_nmi)(struct kvm_vcpu *vcpu);
648 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
649 bool has_error_code, u32 error_code,
651 void (*cancel_injection)(struct kvm_vcpu *vcpu);
652 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
653 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
654 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
655 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
656 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
657 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
658 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
659 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
660 int (*get_tdp_level)(void);
661 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
662 int (*get_lpage_level)(void);
663 bool (*rdtscp_supported)(void);
664 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
666 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
668 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
670 bool (*has_wbinvd_exit)(void);
672 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
673 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
675 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
676 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu);
678 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
680 int (*check_intercept)(struct kvm_vcpu *vcpu,
681 struct x86_instruction_info *info,
682 enum x86_intercept_stage stage);
685 struct kvm_arch_async_pf {
692 extern struct kvm_x86_ops *kvm_x86_ops;
694 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
697 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
700 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
702 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
705 int kvm_mmu_module_init(void);
706 void kvm_mmu_module_exit(void);
708 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
709 int kvm_mmu_create(struct kvm_vcpu *vcpu);
710 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
711 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
712 u64 dirty_mask, u64 nx_mask, u64 x_mask);
714 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
715 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
716 void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
717 struct kvm_memory_slot *slot,
718 gfn_t gfn_offset, unsigned long mask);
719 void kvm_mmu_zap_all(struct kvm *kvm);
720 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
721 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
723 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
725 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
726 const void *val, int bytes);
727 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
729 extern bool tdp_enabled;
731 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
733 /* control of guest tsc rate supported? */
734 extern bool kvm_has_tsc_control;
735 /* minimum supported tsc_khz for guests */
736 extern u32 kvm_min_guest_tsc_khz;
737 /* maximum supported tsc_khz for guests */
738 extern u32 kvm_max_guest_tsc_khz;
740 enum emulation_result {
741 EMULATE_DONE, /* no further processing */
742 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
743 EMULATE_FAIL, /* can't emulate this instruction */
746 #define EMULTYPE_NO_DECODE (1 << 0)
747 #define EMULTYPE_TRAP_UD (1 << 1)
748 #define EMULTYPE_SKIP (1 << 2)
749 #define EMULTYPE_RETRY (1 << 3)
750 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
751 int emulation_type, void *insn, int insn_len);
753 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
756 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
759 void kvm_enable_efer_bits(u64);
760 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
761 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
763 struct x86_emulate_ctxt;
765 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
766 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
767 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
768 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
770 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
771 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
773 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
774 int reason, bool has_error_code, u32 error_code);
776 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
777 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
778 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
779 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
780 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
781 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
782 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
783 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
784 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
785 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
787 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
788 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
790 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
791 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
792 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
794 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
795 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
796 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
797 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
798 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
799 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
800 gfn_t gfn, void *data, int offset, int len,
802 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
803 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
805 int kvm_pic_set_irq(void *opaque, int irq, int level);
807 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
809 int fx_init(struct kvm_vcpu *vcpu);
811 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
812 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
813 const u8 *new, int bytes);
814 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
815 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
816 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
817 int kvm_mmu_load(struct kvm_vcpu *vcpu);
818 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
819 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
820 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
821 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
822 struct x86_exception *exception);
823 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
824 struct x86_exception *exception);
825 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
826 struct x86_exception *exception);
827 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
828 struct x86_exception *exception);
830 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
832 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
833 void *insn, int insn_len);
834 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
836 void kvm_enable_tdp(void);
837 void kvm_disable_tdp(void);
839 int complete_pio(struct kvm_vcpu *vcpu);
840 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
842 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
847 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
849 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
851 return (struct kvm_mmu_page *)page_private(page);
854 static inline u16 kvm_read_ldt(void)
857 asm("sldt %0" : "=g"(ldt));
861 static inline void kvm_load_ldt(u16 sel)
863 asm("lldt %0" : : "rm"(sel));
867 static inline unsigned long read_msr(unsigned long msr)
876 static inline u32 get_rdx_init_val(void)
878 return 0x600; /* P6 family */
881 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
883 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
886 #define TSS_IOPB_BASE_OFFSET 0x66
887 #define TSS_BASE_SIZE 0x68
888 #define TSS_IOPB_SIZE (65536 / 8)
889 #define TSS_REDIRECTION_SIZE (256 / 8)
890 #define RMODE_TSS_SIZE \
891 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
894 TASK_SWITCH_CALL = 0,
895 TASK_SWITCH_IRET = 1,
897 TASK_SWITCH_GATE = 3,
900 #define HF_GIF_MASK (1 << 0)
901 #define HF_HIF_MASK (1 << 1)
902 #define HF_VINTR_MASK (1 << 2)
903 #define HF_NMI_MASK (1 << 3)
904 #define HF_IRET_MASK (1 << 4)
905 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
908 * Hardware virtualization extension instructions may fault if a
909 * reboot turns off virtualization while processes are running.
910 * Trap the fault and ignore the instruction if that happens.
912 asmlinkage void kvm_spurious_fault(void);
913 extern bool kvm_rebooting;
915 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
916 "666: " insn "\n\t" \
918 ".pushsection .fixup, \"ax\" \n" \
920 cleanup_insn "\n\t" \
921 "cmpb $0, kvm_rebooting \n\t" \
923 __ASM_SIZE(push) " $666b \n\t" \
924 "call kvm_spurious_fault \n\t" \
926 _ASM_EXTABLE(666b, 667b)
928 #define __kvm_handle_fault_on_reboot(insn) \
929 ____kvm_handle_fault_on_reboot(insn, "")
931 #define KVM_ARCH_WANT_MMU_NOTIFIER
932 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
933 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
934 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
935 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
936 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
937 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
938 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
939 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
941 void kvm_define_shared_msr(unsigned index, u32 msr);
942 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
944 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
946 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
947 struct kvm_async_pf *work);
948 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
949 struct kvm_async_pf *work);
950 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
951 struct kvm_async_pf *work);
952 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
953 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
955 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
957 int kvm_is_in_guest(void);
959 void kvm_pmu_init(struct kvm_vcpu *vcpu);
960 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
961 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
962 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
963 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
964 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
965 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data);
966 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
967 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
968 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
970 #endif /* _ASM_X86_KVM_HOST_H */