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>
31 #define KVM_MAX_VCPUS 254
32 #define KVM_SOFT_MAX_VCPUS 160
33 #define KVM_MEMORY_SLOTS 32
34 /* memory slots that does not exposed to userspace */
35 #define KVM_PRIVATE_MEM_SLOTS 4
36 #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
38 #define KVM_MMIO_SIZE 16
40 #define KVM_PIO_PAGE_OFFSET 1
41 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
43 #define CR0_RESERVED_BITS \
44 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
45 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
46 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
48 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
49 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
50 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
51 0xFFFFFF0000000000ULL)
52 #define CR4_RESERVED_BITS \
53 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
54 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
55 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR \
56 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
57 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
59 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
63 #define INVALID_PAGE (~(hpa_t)0)
64 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
66 #define UNMAPPED_GVA (~(gpa_t)0)
68 /* KVM Hugepage definitions for x86 */
69 #define KVM_NR_PAGE_SIZES 3
70 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
71 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
72 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
73 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
74 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
92 #define SELECTOR_TI_MASK (1 << 2)
93 #define SELECTOR_RPL_MASK 0x03
97 #define KVM_PERMILLE_MMU_PAGES 20
98 #define KVM_MIN_ALLOC_MMU_PAGES 64
99 #define KVM_MMU_HASH_SHIFT 10
100 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
101 #define KVM_MIN_FREE_MMU_PAGES 5
102 #define KVM_REFILL_PAGES 25
103 #define KVM_MAX_CPUID_ENTRIES 80
104 #define KVM_NR_FIXED_MTRR_REGION 88
105 #define KVM_NR_VAR_MTRR 8
107 #define ASYNC_PF_PER_VCPU 64
109 extern raw_spinlock_t kvm_lock;
110 extern struct list_head vm_list;
140 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
158 #include <asm/kvm_emulate.h>
160 #define KVM_NR_MEM_OBJS 40
162 #define KVM_NR_DB_REGS 4
164 #define DR6_BD (1 << 13)
165 #define DR6_BS (1 << 14)
166 #define DR6_FIXED_1 0xffff0ff0
167 #define DR6_VOLATILE 0x0000e00f
169 #define DR7_BP_EN_MASK 0x000000ff
170 #define DR7_GE (1 << 9)
171 #define DR7_GD (1 << 13)
172 #define DR7_FIXED_1 0x00000400
173 #define DR7_VOLATILE 0xffff23ff
176 * We don't want allocation failures within the mmu code, so we preallocate
177 * enough memory for a single page fault in a cache.
179 struct kvm_mmu_memory_cache {
181 void *objects[KVM_NR_MEM_OBJS];
185 * kvm_mmu_page_role, below, is defined as:
187 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
188 * bits 4:7 - page table level for this shadow (1-4)
189 * bits 8:9 - page table quadrant for 2-level guests
190 * bit 16 - direct mapping of virtual to physical mapping at gfn
191 * used for real mode and two-dimensional paging
192 * bits 17:19 - common access permissions for all ptes in this shadow page
194 union kvm_mmu_page_role {
200 unsigned pad_for_nice_hex_output:6;
206 unsigned smep_andnot_wp:1;
210 struct kvm_mmu_page {
211 struct list_head link;
212 struct hlist_node hash_link;
215 * The following two entries are used to key the shadow page in the
219 union kvm_mmu_page_role role;
222 /* hold the gfn of each spte inside spt */
225 * One bit set per slot which has memory
226 * in this shadow page.
228 DECLARE_BITMAP(slot_bitmap, KVM_MEM_SLOTS_NUM);
230 int root_count; /* Currently serving as active root */
231 unsigned int unsync_children;
232 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
233 DECLARE_BITMAP(unsync_child_bitmap, 512);
236 int clear_spte_count;
239 int write_flooding_count;
244 struct kvm_pio_request {
252 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
253 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
257 void (*new_cr3)(struct kvm_vcpu *vcpu);
258 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
259 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
260 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
261 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
263 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
264 struct x86_exception *fault);
265 void (*free)(struct kvm_vcpu *vcpu);
266 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
267 struct x86_exception *exception);
268 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
269 int (*sync_page)(struct kvm_vcpu *vcpu,
270 struct kvm_mmu_page *sp);
271 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
272 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
273 u64 *spte, const void *pte);
276 int shadow_root_level;
277 union kvm_mmu_page_role base_role;
282 u64 rsvd_bits_mask[2][4];
286 u64 pdptrs[4]; /* pae */
299 struct perf_event *perf_event;
300 struct kvm_vcpu *vcpu;
304 unsigned nr_arch_gp_counters;
305 unsigned nr_arch_fixed_counters;
306 unsigned available_event_types;
311 u64 counter_bitmask[2];
312 u64 global_ctrl_mask;
314 struct kvm_pmc gp_counters[X86_PMC_MAX_GENERIC];
315 struct kvm_pmc fixed_counters[X86_PMC_MAX_FIXED];
316 struct irq_work irq_work;
320 struct kvm_vcpu_arch {
322 * rip and regs accesses must go through
323 * kvm_{register,rip}_{read,write} functions.
325 unsigned long regs[NR_VCPU_REGS];
330 unsigned long cr0_guest_owned_bits;
334 unsigned long cr4_guest_owned_bits;
339 struct kvm_lapic *apic; /* kernel irqchip context */
340 int32_t apic_arb_prio;
343 u64 ia32_misc_enable_msr;
344 bool tpr_access_reporting;
347 * Paging state of the vcpu
349 * If the vcpu runs in guest mode with two level paging this still saves
350 * the paging mode of the l1 guest. This context is always used to
356 * Paging state of an L2 guest (used for nested npt)
358 * This context will save all necessary information to walk page tables
359 * of the an L2 guest. This context is only initialized for page table
360 * walking and not for faulting since we never handle l2 page faults on
363 struct kvm_mmu nested_mmu;
366 * Pointer to the mmu context currently used for
367 * gva_to_gpa translations.
369 struct kvm_mmu *walk_mmu;
371 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
372 struct kvm_mmu_memory_cache mmu_page_cache;
373 struct kvm_mmu_memory_cache mmu_page_header_cache;
375 struct fpu guest_fpu;
378 struct kvm_pio_request pio;
381 u8 event_exit_inst_len;
383 struct kvm_queued_exception {
391 struct kvm_queued_interrupt {
397 int halt_request; /* real mode on Intel only */
400 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
401 /* emulate context */
403 struct x86_emulate_ctxt emulate_ctxt;
404 bool emulate_regs_need_sync_to_vcpu;
405 bool emulate_regs_need_sync_from_vcpu;
408 struct pvclock_vcpu_time_info hv_clock;
409 unsigned int hw_tsc_khz;
410 unsigned int time_offset;
411 struct page *time_page;
417 struct gfn_to_hva_cache stime;
418 struct kvm_steal_time steal;
427 bool tsc_always_catchup;
428 s8 virtual_tsc_shift;
429 u32 virtual_tsc_mult;
432 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
433 unsigned nmi_pending; /* NMI queued after currently running handler */
434 bool nmi_injected; /* Trying to inject an NMI this entry */
436 struct mtrr_state_type mtrr_state;
440 unsigned long db[KVM_NR_DB_REGS];
443 unsigned long eff_db[KVM_NR_DB_REGS];
450 /* Cache MMIO info */
457 /* used for guest single stepping over the given code position */
458 unsigned long singlestep_rip;
460 /* fields used by HYPER-V emulation */
463 cpumask_var_t wbinvd_dirty_mask;
465 unsigned long last_retry_eip;
466 unsigned long last_retry_addr;
470 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
471 struct gfn_to_hva_cache data;
477 /* OSVW MSRs (AMD only) */
485 unsigned int n_used_mmu_pages;
486 unsigned int n_requested_mmu_pages;
487 unsigned int n_max_mmu_pages;
488 unsigned int indirect_shadow_pages;
489 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
491 * Hash table of struct kvm_mmu_page.
493 struct list_head active_mmu_pages;
494 struct list_head assigned_dev_head;
495 struct iommu_domain *iommu_domain;
497 struct kvm_pic *vpic;
498 struct kvm_ioapic *vioapic;
499 struct kvm_pit *vpit;
500 int vapics_in_nmi_mode;
502 unsigned int tss_addr;
503 struct page *apic_access_page;
507 struct page *ept_identity_pagetable;
508 bool ept_identity_pagetable_done;
509 gpa_t ept_identity_map_addr;
511 unsigned long irq_sources_bitmap;
513 raw_spinlock_t tsc_write_lock;
519 struct kvm_xen_hvm_config xen_hvm_config;
521 /* fields used by HYPER-V emulation */
525 atomic_t reader_counter;
527 #ifdef CONFIG_KVM_MMU_AUDIT
533 u32 mmu_shadow_zapped;
541 u32 remote_tlb_flush;
545 struct kvm_vcpu_stat {
555 u32 irq_window_exits;
556 u32 nmi_window_exits;
559 u32 request_irq_exits;
561 u32 host_state_reload;
565 u32 insn_emulation_fail;
571 struct x86_instruction_info;
574 int (*cpu_has_kvm_support)(void); /* __init */
575 int (*disabled_by_bios)(void); /* __init */
576 int (*hardware_enable)(void *dummy);
577 void (*hardware_disable)(void *dummy);
578 void (*check_processor_compatibility)(void *rtn);
579 int (*hardware_setup)(void); /* __init */
580 void (*hardware_unsetup)(void); /* __exit */
581 bool (*cpu_has_accelerated_tpr)(void);
582 void (*cpuid_update)(struct kvm_vcpu *vcpu);
584 /* Create, but do not attach this VCPU */
585 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
586 void (*vcpu_free)(struct kvm_vcpu *vcpu);
587 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
589 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
590 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
591 void (*vcpu_put)(struct kvm_vcpu *vcpu);
593 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
594 struct kvm_guest_debug *dbg);
595 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
596 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
597 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
598 void (*get_segment)(struct kvm_vcpu *vcpu,
599 struct kvm_segment *var, int seg);
600 int (*get_cpl)(struct kvm_vcpu *vcpu);
601 void (*set_segment)(struct kvm_vcpu *vcpu,
602 struct kvm_segment *var, int seg);
603 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
604 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
605 void (*decache_cr3)(struct kvm_vcpu *vcpu);
606 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
607 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
608 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
609 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
610 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
611 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
612 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
613 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
614 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
615 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
616 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
617 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
618 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
619 void (*fpu_activate)(struct kvm_vcpu *vcpu);
620 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
622 void (*tlb_flush)(struct kvm_vcpu *vcpu);
624 void (*run)(struct kvm_vcpu *vcpu);
625 int (*handle_exit)(struct kvm_vcpu *vcpu);
626 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
627 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
628 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
629 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
630 unsigned char *hypercall_addr);
631 void (*set_irq)(struct kvm_vcpu *vcpu);
632 void (*set_nmi)(struct kvm_vcpu *vcpu);
633 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
634 bool has_error_code, u32 error_code,
636 void (*cancel_injection)(struct kvm_vcpu *vcpu);
637 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
638 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
639 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
640 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
641 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
642 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
643 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
644 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
645 int (*get_tdp_level)(void);
646 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
647 int (*get_lpage_level)(void);
648 bool (*rdtscp_supported)(void);
649 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
651 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
653 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
655 bool (*has_wbinvd_exit)(void);
657 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
658 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
660 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
661 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu);
663 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
665 int (*check_intercept)(struct kvm_vcpu *vcpu,
666 struct x86_instruction_info *info,
667 enum x86_intercept_stage stage);
670 struct kvm_arch_async_pf {
677 extern struct kvm_x86_ops *kvm_x86_ops;
679 int kvm_mmu_module_init(void);
680 void kvm_mmu_module_exit(void);
682 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
683 int kvm_mmu_create(struct kvm_vcpu *vcpu);
684 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
685 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
686 u64 dirty_mask, u64 nx_mask, u64 x_mask);
688 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
689 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
690 int kvm_mmu_rmap_write_protect(struct kvm *kvm, u64 gfn,
691 struct kvm_memory_slot *slot);
692 void kvm_mmu_zap_all(struct kvm *kvm);
693 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
694 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
696 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
698 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
699 const void *val, int bytes);
700 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
702 extern bool tdp_enabled;
704 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
706 /* control of guest tsc rate supported? */
707 extern bool kvm_has_tsc_control;
708 /* minimum supported tsc_khz for guests */
709 extern u32 kvm_min_guest_tsc_khz;
710 /* maximum supported tsc_khz for guests */
711 extern u32 kvm_max_guest_tsc_khz;
713 enum emulation_result {
714 EMULATE_DONE, /* no further processing */
715 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
716 EMULATE_FAIL, /* can't emulate this instruction */
719 #define EMULTYPE_NO_DECODE (1 << 0)
720 #define EMULTYPE_TRAP_UD (1 << 1)
721 #define EMULTYPE_SKIP (1 << 2)
722 #define EMULTYPE_RETRY (1 << 3)
723 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
724 int emulation_type, void *insn, int insn_len);
726 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
729 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
732 void kvm_enable_efer_bits(u64);
733 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
734 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
736 struct x86_emulate_ctxt;
738 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
739 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
740 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
741 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
743 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
744 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
746 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
747 bool has_error_code, u32 error_code);
749 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
750 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
751 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
752 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
753 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
754 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
755 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
756 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
757 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
758 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
760 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
761 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
763 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
764 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
765 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
767 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
768 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
769 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
770 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
771 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
772 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
773 gfn_t gfn, void *data, int offset, int len,
775 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
776 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
778 int kvm_pic_set_irq(void *opaque, int irq, int level);
780 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
782 int fx_init(struct kvm_vcpu *vcpu);
784 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
785 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
786 const u8 *new, int bytes);
787 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
788 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
789 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
790 int kvm_mmu_load(struct kvm_vcpu *vcpu);
791 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
792 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
793 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
794 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
795 struct x86_exception *exception);
796 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
797 struct x86_exception *exception);
798 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
799 struct x86_exception *exception);
800 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
801 struct x86_exception *exception);
803 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
805 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
806 void *insn, int insn_len);
807 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
809 void kvm_enable_tdp(void);
810 void kvm_disable_tdp(void);
812 int complete_pio(struct kvm_vcpu *vcpu);
813 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
815 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
820 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
822 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
824 return (struct kvm_mmu_page *)page_private(page);
827 static inline u16 kvm_read_ldt(void)
830 asm("sldt %0" : "=g"(ldt));
834 static inline void kvm_load_ldt(u16 sel)
836 asm("lldt %0" : : "rm"(sel));
840 static inline unsigned long read_msr(unsigned long msr)
849 static inline u32 get_rdx_init_val(void)
851 return 0x600; /* P6 family */
854 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
856 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
859 #define TSS_IOPB_BASE_OFFSET 0x66
860 #define TSS_BASE_SIZE 0x68
861 #define TSS_IOPB_SIZE (65536 / 8)
862 #define TSS_REDIRECTION_SIZE (256 / 8)
863 #define RMODE_TSS_SIZE \
864 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
867 TASK_SWITCH_CALL = 0,
868 TASK_SWITCH_IRET = 1,
870 TASK_SWITCH_GATE = 3,
873 #define HF_GIF_MASK (1 << 0)
874 #define HF_HIF_MASK (1 << 1)
875 #define HF_VINTR_MASK (1 << 2)
876 #define HF_NMI_MASK (1 << 3)
877 #define HF_IRET_MASK (1 << 4)
878 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
881 * Hardware virtualization extension instructions may fault if a
882 * reboot turns off virtualization while processes are running.
883 * Trap the fault and ignore the instruction if that happens.
885 asmlinkage void kvm_spurious_fault(void);
886 extern bool kvm_rebooting;
888 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
889 "666: " insn "\n\t" \
891 ".pushsection .fixup, \"ax\" \n" \
893 cleanup_insn "\n\t" \
894 "cmpb $0, kvm_rebooting \n\t" \
896 __ASM_SIZE(push) " $666b \n\t" \
897 "call kvm_spurious_fault \n\t" \
899 ".pushsection __ex_table, \"a\" \n\t" \
900 _ASM_PTR " 666b, 667b \n\t" \
903 #define __kvm_handle_fault_on_reboot(insn) \
904 ____kvm_handle_fault_on_reboot(insn, "")
906 #define KVM_ARCH_WANT_MMU_NOTIFIER
907 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
908 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
909 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
910 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
911 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
912 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
913 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
914 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
916 void kvm_define_shared_msr(unsigned index, u32 msr);
917 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
919 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
921 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
922 struct kvm_async_pf *work);
923 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
924 struct kvm_async_pf *work);
925 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
926 struct kvm_async_pf *work);
927 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
928 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
930 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
932 int kvm_is_in_guest(void);
934 void kvm_pmu_init(struct kvm_vcpu *vcpu);
935 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
936 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
937 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
938 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
939 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
940 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data);
941 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
942 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
943 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
945 #endif /* _ASM_X86_KVM_HOST_H */