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>
20 #include <linux/kvm.h>
21 #include <linux/kvm_para.h>
22 #include <linux/kvm_types.h>
24 #include <asm/pvclock-abi.h>
27 #include <asm/msr-index.h>
29 #define KVM_MAX_VCPUS 64
30 #define KVM_MEMORY_SLOTS 32
31 /* memory slots that does not exposed to userspace */
32 #define KVM_PRIVATE_MEM_SLOTS 4
34 #define KVM_PIO_PAGE_OFFSET 1
35 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
37 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
38 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
39 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
40 0xFFFFFF0000000000ULL)
42 #define INVALID_PAGE (~(hpa_t)0)
43 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
45 #define UNMAPPED_GVA (~(gpa_t)0)
47 /* KVM Hugepage definitions for x86 */
48 #define KVM_NR_PAGE_SIZES 3
49 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
50 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
51 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
52 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
53 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
71 #define SELECTOR_TI_MASK (1 << 2)
72 #define SELECTOR_RPL_MASK 0x03
76 #define KVM_PERMILLE_MMU_PAGES 20
77 #define KVM_MIN_ALLOC_MMU_PAGES 64
78 #define KVM_MMU_HASH_SHIFT 10
79 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
80 #define KVM_MIN_FREE_MMU_PAGES 5
81 #define KVM_REFILL_PAGES 25
82 #define KVM_MAX_CPUID_ENTRIES 80
83 #define KVM_NR_FIXED_MTRR_REGION 88
84 #define KVM_NR_VAR_MTRR 8
86 #define ASYNC_PF_PER_VCPU 64
88 extern spinlock_t kvm_lock;
89 extern struct list_head vm_list;
119 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
133 #include <asm/kvm_emulate.h>
135 #define KVM_NR_MEM_OBJS 40
137 #define KVM_NR_DB_REGS 4
139 #define DR6_BD (1 << 13)
140 #define DR6_BS (1 << 14)
141 #define DR6_FIXED_1 0xffff0ff0
142 #define DR6_VOLATILE 0x0000e00f
144 #define DR7_BP_EN_MASK 0x000000ff
145 #define DR7_GE (1 << 9)
146 #define DR7_GD (1 << 13)
147 #define DR7_FIXED_1 0x00000400
148 #define DR7_VOLATILE 0xffff23ff
151 * We don't want allocation failures within the mmu code, so we preallocate
152 * enough memory for a single page fault in a cache.
154 struct kvm_mmu_memory_cache {
156 void *objects[KVM_NR_MEM_OBJS];
159 #define NR_PTE_CHAIN_ENTRIES 5
161 struct kvm_pte_chain {
162 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
163 struct hlist_node link;
167 * kvm_mmu_page_role, below, is defined as:
169 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
170 * bits 4:7 - page table level for this shadow (1-4)
171 * bits 8:9 - page table quadrant for 2-level guests
172 * bit 16 - direct mapping of virtual to physical mapping at gfn
173 * used for real mode and two-dimensional paging
174 * bits 17:19 - common access permissions for all ptes in this shadow page
176 union kvm_mmu_page_role {
182 unsigned pad_for_nice_hex_output:6;
191 struct kvm_mmu_page {
192 struct list_head link;
193 struct hlist_node hash_link;
196 * The following two entries are used to key the shadow page in the
200 union kvm_mmu_page_role role;
203 /* hold the gfn of each spte inside spt */
206 * One bit set per slot which has memory
207 * in this shadow page.
209 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
210 bool multimapped; /* More than one parent_pte? */
212 int root_count; /* Currently serving as active root */
213 unsigned int unsync_children;
215 u64 *parent_pte; /* !multimapped */
216 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
218 DECLARE_BITMAP(unsync_child_bitmap, 512);
221 struct kvm_pv_mmu_op_buffer {
225 char buf[512] __aligned(sizeof(long));
228 struct kvm_pio_request {
236 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
237 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
241 void (*new_cr3)(struct kvm_vcpu *vcpu);
242 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
243 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
244 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err, bool no_apf);
245 void (*inject_page_fault)(struct kvm_vcpu *vcpu);
246 void (*free)(struct kvm_vcpu *vcpu);
247 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
249 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
250 void (*prefetch_page)(struct kvm_vcpu *vcpu,
251 struct kvm_mmu_page *page);
252 int (*sync_page)(struct kvm_vcpu *vcpu,
253 struct kvm_mmu_page *sp, bool clear_unsync);
254 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
257 int shadow_root_level;
258 union kvm_mmu_page_role base_role;
263 u64 rsvd_bits_mask[2][4];
267 u64 pdptrs[4]; /* pae */
270 struct kvm_vcpu_arch {
272 * rip and regs accesses must go through
273 * kvm_{register,rip}_{read,write} functions.
275 unsigned long regs[NR_VCPU_REGS];
280 unsigned long cr0_guest_owned_bits;
284 unsigned long cr4_guest_owned_bits;
289 struct kvm_lapic *apic; /* kernel irqchip context */
290 int32_t apic_arb_prio;
293 u64 ia32_misc_enable_msr;
294 bool tpr_access_reporting;
297 * Paging state of the vcpu
299 * If the vcpu runs in guest mode with two level paging this still saves
300 * the paging mode of the l1 guest. This context is always used to
306 * Paging state of an L2 guest (used for nested npt)
308 * This context will save all necessary information to walk page tables
309 * of the an L2 guest. This context is only initialized for page table
310 * walking and not for faulting since we never handle l2 page faults on
313 struct kvm_mmu nested_mmu;
316 * Pointer to the mmu context currently used for
317 * gva_to_gpa translations.
319 struct kvm_mmu *walk_mmu;
322 * This struct is filled with the necessary information to propagate a
323 * page fault into the guest
331 /* only needed in kvm_pv_mmu_op() path, but it's hot so
332 * put it here to avoid allocation */
333 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
335 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
336 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
337 struct kvm_mmu_memory_cache mmu_page_cache;
338 struct kvm_mmu_memory_cache mmu_page_header_cache;
340 gfn_t last_pt_write_gfn;
341 int last_pt_write_count;
342 u64 *last_pte_updated;
346 gfn_t gfn; /* presumed gfn during guest pte update */
347 pfn_t pfn; /* pfn corresponding to that gfn */
348 unsigned long mmu_seq;
351 struct fpu guest_fpu;
354 gva_t mmio_fault_cr2;
355 struct kvm_pio_request pio;
358 u8 event_exit_inst_len;
360 struct kvm_queued_exception {
368 struct kvm_queued_interrupt {
374 int halt_request; /* real mode on Intel only */
377 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
378 /* emulate context */
380 struct x86_emulate_ctxt emulate_ctxt;
383 struct pvclock_vcpu_time_info hv_clock;
384 unsigned int hw_tsc_khz;
385 unsigned int time_offset;
386 struct page *time_page;
397 struct mtrr_state_type mtrr_state;
401 unsigned long db[KVM_NR_DB_REGS];
404 unsigned long eff_db[KVM_NR_DB_REGS];
411 /* used for guest single stepping over the given code position */
412 unsigned long singlestep_rip;
414 /* fields used by HYPER-V emulation */
417 cpumask_var_t wbinvd_dirty_mask;
421 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
422 struct gfn_to_hva_cache data;
430 unsigned int n_used_mmu_pages;
431 unsigned int n_requested_mmu_pages;
432 unsigned int n_max_mmu_pages;
433 atomic_t invlpg_counter;
434 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
436 * Hash table of struct kvm_mmu_page.
438 struct list_head active_mmu_pages;
439 struct list_head assigned_dev_head;
440 struct iommu_domain *iommu_domain;
442 struct kvm_pic *vpic;
443 struct kvm_ioapic *vioapic;
444 struct kvm_pit *vpit;
445 int vapics_in_nmi_mode;
447 unsigned int tss_addr;
448 struct page *apic_access_page;
452 struct page *ept_identity_pagetable;
453 bool ept_identity_pagetable_done;
454 gpa_t ept_identity_map_addr;
456 unsigned long irq_sources_bitmap;
458 spinlock_t tsc_write_lock;
463 u32 virtual_tsc_mult;
464 s8 virtual_tsc_shift;
466 struct kvm_xen_hvm_config xen_hvm_config;
468 /* fields used by HYPER-V emulation */
474 u32 mmu_shadow_zapped;
482 u32 remote_tlb_flush;
486 struct kvm_vcpu_stat {
496 u32 irq_window_exits;
497 u32 nmi_window_exits;
500 u32 request_irq_exits;
502 u32 host_state_reload;
506 u32 insn_emulation_fail;
513 int (*cpu_has_kvm_support)(void); /* __init */
514 int (*disabled_by_bios)(void); /* __init */
515 int (*hardware_enable)(void *dummy);
516 void (*hardware_disable)(void *dummy);
517 void (*check_processor_compatibility)(void *rtn);
518 int (*hardware_setup)(void); /* __init */
519 void (*hardware_unsetup)(void); /* __exit */
520 bool (*cpu_has_accelerated_tpr)(void);
521 void (*cpuid_update)(struct kvm_vcpu *vcpu);
523 /* Create, but do not attach this VCPU */
524 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
525 void (*vcpu_free)(struct kvm_vcpu *vcpu);
526 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
528 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
529 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
530 void (*vcpu_put)(struct kvm_vcpu *vcpu);
532 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
533 struct kvm_guest_debug *dbg);
534 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
535 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
536 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
537 void (*get_segment)(struct kvm_vcpu *vcpu,
538 struct kvm_segment *var, int seg);
539 int (*get_cpl)(struct kvm_vcpu *vcpu);
540 void (*set_segment)(struct kvm_vcpu *vcpu,
541 struct kvm_segment *var, int seg);
542 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
543 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
544 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
545 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
546 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
547 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
548 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
549 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
550 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
551 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
552 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
553 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
554 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
555 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
556 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
557 void (*fpu_activate)(struct kvm_vcpu *vcpu);
558 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
560 void (*tlb_flush)(struct kvm_vcpu *vcpu);
562 void (*run)(struct kvm_vcpu *vcpu);
563 int (*handle_exit)(struct kvm_vcpu *vcpu);
564 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
565 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
566 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
567 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
568 unsigned char *hypercall_addr);
569 void (*set_irq)(struct kvm_vcpu *vcpu);
570 void (*set_nmi)(struct kvm_vcpu *vcpu);
571 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
572 bool has_error_code, u32 error_code,
574 void (*cancel_injection)(struct kvm_vcpu *vcpu);
575 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
576 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
577 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
578 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
579 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
580 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
581 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
582 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
583 int (*get_tdp_level)(void);
584 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
585 int (*get_lpage_level)(void);
586 bool (*rdtscp_supported)(void);
587 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
589 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
591 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
593 bool (*has_wbinvd_exit)(void);
595 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
597 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
598 const struct trace_print_flags *exit_reasons_str;
601 struct kvm_arch_async_pf {
607 extern struct kvm_x86_ops *kvm_x86_ops;
609 int kvm_mmu_module_init(void);
610 void kvm_mmu_module_exit(void);
612 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
613 int kvm_mmu_create(struct kvm_vcpu *vcpu);
614 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
615 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
616 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
617 u64 dirty_mask, u64 nx_mask, u64 x_mask);
619 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
620 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
621 void kvm_mmu_zap_all(struct kvm *kvm);
622 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
623 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
625 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
627 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
628 const void *val, int bytes);
629 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
630 gpa_t addr, unsigned long *ret);
631 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
633 extern bool tdp_enabled;
635 enum emulation_result {
636 EMULATE_DONE, /* no further processing */
637 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
638 EMULATE_FAIL, /* can't emulate this instruction */
641 #define EMULTYPE_NO_DECODE (1 << 0)
642 #define EMULTYPE_TRAP_UD (1 << 1)
643 #define EMULTYPE_SKIP (1 << 2)
644 int emulate_instruction(struct kvm_vcpu *vcpu,
645 unsigned long cr2, u16 error_code, int emulation_type);
646 void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
647 void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
649 void kvm_enable_efer_bits(u64);
650 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
651 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
653 struct x86_emulate_ctxt;
655 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
656 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
657 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
658 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
659 int emulate_clts(struct kvm_vcpu *vcpu);
660 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
662 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
663 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
665 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
666 bool has_error_code, u32 error_code);
668 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
669 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
670 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
671 void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
672 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
673 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
674 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
675 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
676 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
677 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
679 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
680 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
682 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
683 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
685 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
686 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
687 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
688 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
689 void kvm_inject_page_fault(struct kvm_vcpu *vcpu);
690 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
691 gfn_t gfn, void *data, int offset, int len,
693 void kvm_propagate_fault(struct kvm_vcpu *vcpu);
694 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
696 int kvm_pic_set_irq(void *opaque, int irq, int level);
698 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
700 int fx_init(struct kvm_vcpu *vcpu);
702 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
703 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
704 const u8 *new, int bytes,
705 bool guest_initiated);
706 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
707 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
708 int kvm_mmu_load(struct kvm_vcpu *vcpu);
709 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
710 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
711 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
712 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
713 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
714 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
716 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
718 int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
720 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
721 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
723 void kvm_enable_tdp(void);
724 void kvm_disable_tdp(void);
726 int complete_pio(struct kvm_vcpu *vcpu);
727 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
729 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
731 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
733 return (struct kvm_mmu_page *)page_private(page);
736 static inline u16 kvm_read_ldt(void)
739 asm("sldt %0" : "=g"(ldt));
743 static inline void kvm_load_ldt(u16 sel)
745 asm("lldt %0" : : "rm"(sel));
749 static inline unsigned long read_msr(unsigned long msr)
758 static inline u32 get_rdx_init_val(void)
760 return 0x600; /* P6 family */
763 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
765 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
768 #define TSS_IOPB_BASE_OFFSET 0x66
769 #define TSS_BASE_SIZE 0x68
770 #define TSS_IOPB_SIZE (65536 / 8)
771 #define TSS_REDIRECTION_SIZE (256 / 8)
772 #define RMODE_TSS_SIZE \
773 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
776 TASK_SWITCH_CALL = 0,
777 TASK_SWITCH_IRET = 1,
779 TASK_SWITCH_GATE = 3,
782 #define HF_GIF_MASK (1 << 0)
783 #define HF_HIF_MASK (1 << 1)
784 #define HF_VINTR_MASK (1 << 2)
785 #define HF_NMI_MASK (1 << 3)
786 #define HF_IRET_MASK (1 << 4)
789 * Hardware virtualization extension instructions may fault if a
790 * reboot turns off virtualization while processes are running.
791 * Trap the fault and ignore the instruction if that happens.
793 asmlinkage void kvm_handle_fault_on_reboot(void);
795 #define __kvm_handle_fault_on_reboot(insn) \
796 "666: " insn "\n\t" \
797 ".pushsection .fixup, \"ax\" \n" \
799 __ASM_SIZE(push) " $666b \n\t" \
800 "jmp kvm_handle_fault_on_reboot \n\t" \
802 ".pushsection __ex_table, \"a\" \n\t" \
803 _ASM_PTR " 666b, 667b \n\t" \
806 #define KVM_ARCH_WANT_MMU_NOTIFIER
807 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
808 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
809 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
810 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
811 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
812 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
813 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
815 void kvm_define_shared_msr(unsigned index, u32 msr);
816 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
818 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
820 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
821 struct kvm_async_pf *work);
822 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
823 struct kvm_async_pf *work);
824 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
825 struct kvm_async_pf *work);
826 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
827 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
829 #endif /* _ASM_X86_KVM_HOST_H */