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 raw_spinlock_t kvm_lock;
89 extern struct list_head vm_list;
119 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
134 #include <asm/kvm_emulate.h>
136 #define KVM_NR_MEM_OBJS 40
138 #define KVM_NR_DB_REGS 4
140 #define DR6_BD (1 << 13)
141 #define DR6_BS (1 << 14)
142 #define DR6_FIXED_1 0xffff0ff0
143 #define DR6_VOLATILE 0x0000e00f
145 #define DR7_BP_EN_MASK 0x000000ff
146 #define DR7_GE (1 << 9)
147 #define DR7_GD (1 << 13)
148 #define DR7_FIXED_1 0x00000400
149 #define DR7_VOLATILE 0xffff23ff
152 * We don't want allocation failures within the mmu code, so we preallocate
153 * enough memory for a single page fault in a cache.
155 struct kvm_mmu_memory_cache {
157 void *objects[KVM_NR_MEM_OBJS];
160 #define NR_PTE_CHAIN_ENTRIES 5
162 struct kvm_pte_chain {
163 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
164 struct hlist_node link;
168 * kvm_mmu_page_role, below, is defined as:
170 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
171 * bits 4:7 - page table level for this shadow (1-4)
172 * bits 8:9 - page table quadrant for 2-level guests
173 * bit 16 - direct mapping of virtual to physical mapping at gfn
174 * used for real mode and two-dimensional paging
175 * bits 17:19 - common access permissions for all ptes in this shadow page
177 union kvm_mmu_page_role {
183 unsigned pad_for_nice_hex_output:6;
192 struct kvm_mmu_page {
193 struct list_head link;
194 struct hlist_node hash_link;
197 * The following two entries are used to key the shadow page in the
201 union kvm_mmu_page_role role;
204 /* hold the gfn of each spte inside spt */
207 * One bit set per slot which has memory
208 * in this shadow page.
210 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
211 bool multimapped; /* More than one parent_pte? */
213 int root_count; /* Currently serving as active root */
214 unsigned int unsync_children;
216 u64 *parent_pte; /* !multimapped */
217 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
219 DECLARE_BITMAP(unsync_child_bitmap, 512);
222 struct kvm_pv_mmu_op_buffer {
226 char buf[512] __aligned(sizeof(long));
229 struct kvm_pio_request {
237 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
238 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
242 void (*new_cr3)(struct kvm_vcpu *vcpu);
243 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
244 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
245 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
247 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
248 struct x86_exception *fault);
249 void (*free)(struct kvm_vcpu *vcpu);
250 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
251 struct x86_exception *exception);
252 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
253 void (*prefetch_page)(struct kvm_vcpu *vcpu,
254 struct kvm_mmu_page *page);
255 int (*sync_page)(struct kvm_vcpu *vcpu,
256 struct kvm_mmu_page *sp);
257 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
260 int shadow_root_level;
261 union kvm_mmu_page_role base_role;
266 u64 rsvd_bits_mask[2][4];
270 u64 pdptrs[4]; /* pae */
273 struct kvm_vcpu_arch {
275 * rip and regs accesses must go through
276 * kvm_{register,rip}_{read,write} functions.
278 unsigned long regs[NR_VCPU_REGS];
283 unsigned long cr0_guest_owned_bits;
287 unsigned long cr4_guest_owned_bits;
292 struct kvm_lapic *apic; /* kernel irqchip context */
293 int32_t apic_arb_prio;
296 u64 ia32_misc_enable_msr;
297 bool tpr_access_reporting;
300 * Paging state of the vcpu
302 * If the vcpu runs in guest mode with two level paging this still saves
303 * the paging mode of the l1 guest. This context is always used to
309 * Paging state of an L2 guest (used for nested npt)
311 * This context will save all necessary information to walk page tables
312 * of the an L2 guest. This context is only initialized for page table
313 * walking and not for faulting since we never handle l2 page faults on
316 struct kvm_mmu nested_mmu;
319 * Pointer to the mmu context currently used for
320 * gva_to_gpa translations.
322 struct kvm_mmu *walk_mmu;
324 /* only needed in kvm_pv_mmu_op() path, but it's hot so
325 * put it here to avoid allocation */
326 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
328 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
329 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
330 struct kvm_mmu_memory_cache mmu_page_cache;
331 struct kvm_mmu_memory_cache mmu_page_header_cache;
333 gfn_t last_pt_write_gfn;
334 int last_pt_write_count;
335 u64 *last_pte_updated;
339 pfn_t pfn; /* pfn corresponding to that gfn */
340 unsigned long mmu_seq;
343 struct fpu guest_fpu;
346 gva_t mmio_fault_cr2;
347 struct kvm_pio_request pio;
350 u8 event_exit_inst_len;
352 struct kvm_queued_exception {
360 struct kvm_queued_interrupt {
366 int halt_request; /* real mode on Intel only */
369 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
370 /* emulate context */
372 struct x86_emulate_ctxt emulate_ctxt;
375 struct pvclock_vcpu_time_info hv_clock;
376 unsigned int hw_tsc_khz;
377 unsigned int time_offset;
378 struct page *time_page;
389 struct mtrr_state_type mtrr_state;
393 unsigned long db[KVM_NR_DB_REGS];
396 unsigned long eff_db[KVM_NR_DB_REGS];
403 /* used for guest single stepping over the given code position */
404 unsigned long singlestep_rip;
406 /* fields used by HYPER-V emulation */
409 cpumask_var_t wbinvd_dirty_mask;
413 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
414 struct gfn_to_hva_cache data;
422 unsigned int n_used_mmu_pages;
423 unsigned int n_requested_mmu_pages;
424 unsigned int n_max_mmu_pages;
425 atomic_t invlpg_counter;
426 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
428 * Hash table of struct kvm_mmu_page.
430 struct list_head active_mmu_pages;
431 struct list_head assigned_dev_head;
432 struct iommu_domain *iommu_domain;
434 struct kvm_pic *vpic;
435 struct kvm_ioapic *vioapic;
436 struct kvm_pit *vpit;
437 int vapics_in_nmi_mode;
439 unsigned int tss_addr;
440 struct page *apic_access_page;
444 struct page *ept_identity_pagetable;
445 bool ept_identity_pagetable_done;
446 gpa_t ept_identity_map_addr;
448 unsigned long irq_sources_bitmap;
450 raw_spinlock_t tsc_write_lock;
455 u32 virtual_tsc_mult;
456 s8 virtual_tsc_shift;
458 struct kvm_xen_hvm_config xen_hvm_config;
460 /* fields used by HYPER-V emulation */
464 #ifdef CONFIG_KVM_MMU_AUDIT
470 u32 mmu_shadow_zapped;
478 u32 remote_tlb_flush;
482 struct kvm_vcpu_stat {
492 u32 irq_window_exits;
493 u32 nmi_window_exits;
496 u32 request_irq_exits;
498 u32 host_state_reload;
502 u32 insn_emulation_fail;
509 int (*cpu_has_kvm_support)(void); /* __init */
510 int (*disabled_by_bios)(void); /* __init */
511 int (*hardware_enable)(void *dummy);
512 void (*hardware_disable)(void *dummy);
513 void (*check_processor_compatibility)(void *rtn);
514 int (*hardware_setup)(void); /* __init */
515 void (*hardware_unsetup)(void); /* __exit */
516 bool (*cpu_has_accelerated_tpr)(void);
517 void (*cpuid_update)(struct kvm_vcpu *vcpu);
519 /* Create, but do not attach this VCPU */
520 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
521 void (*vcpu_free)(struct kvm_vcpu *vcpu);
522 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
524 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
525 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
526 void (*vcpu_put)(struct kvm_vcpu *vcpu);
528 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
529 struct kvm_guest_debug *dbg);
530 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
531 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
532 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
533 void (*get_segment)(struct kvm_vcpu *vcpu,
534 struct kvm_segment *var, int seg);
535 int (*get_cpl)(struct kvm_vcpu *vcpu);
536 void (*set_segment)(struct kvm_vcpu *vcpu,
537 struct kvm_segment *var, int seg);
538 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
539 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
540 void (*decache_cr3)(struct kvm_vcpu *vcpu);
541 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
542 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
543 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
544 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
545 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
546 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
547 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
548 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
549 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
550 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
551 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
552 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
553 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
554 void (*fpu_activate)(struct kvm_vcpu *vcpu);
555 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
557 void (*tlb_flush)(struct kvm_vcpu *vcpu);
559 void (*run)(struct kvm_vcpu *vcpu);
560 int (*handle_exit)(struct kvm_vcpu *vcpu);
561 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
562 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
563 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
564 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
565 unsigned char *hypercall_addr);
566 void (*set_irq)(struct kvm_vcpu *vcpu);
567 void (*set_nmi)(struct kvm_vcpu *vcpu);
568 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
569 bool has_error_code, u32 error_code,
571 void (*cancel_injection)(struct kvm_vcpu *vcpu);
572 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
573 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
574 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
575 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
576 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
577 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
578 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
579 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
580 int (*get_tdp_level)(void);
581 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
582 int (*get_lpage_level)(void);
583 bool (*rdtscp_supported)(void);
584 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
586 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
588 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
590 bool (*has_wbinvd_exit)(void);
592 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
594 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
595 const struct trace_print_flags *exit_reasons_str;
598 struct kvm_arch_async_pf {
605 extern struct kvm_x86_ops *kvm_x86_ops;
607 int kvm_mmu_module_init(void);
608 void kvm_mmu_module_exit(void);
610 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
611 int kvm_mmu_create(struct kvm_vcpu *vcpu);
612 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
613 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
614 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
615 u64 dirty_mask, u64 nx_mask, u64 x_mask);
617 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
618 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
619 void kvm_mmu_zap_all(struct kvm *kvm);
620 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
621 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
623 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
625 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
626 const void *val, int bytes);
627 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
628 gpa_t addr, unsigned long *ret);
629 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
631 extern bool tdp_enabled;
633 enum emulation_result {
634 EMULATE_DONE, /* no further processing */
635 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
636 EMULATE_FAIL, /* can't emulate this instruction */
639 #define EMULTYPE_NO_DECODE (1 << 0)
640 #define EMULTYPE_TRAP_UD (1 << 1)
641 #define EMULTYPE_SKIP (1 << 2)
642 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
643 int emulation_type, void *insn, int insn_len);
645 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
648 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
651 void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
652 void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
654 void kvm_enable_efer_bits(u64);
655 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
656 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
658 struct x86_emulate_ctxt;
660 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
661 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
662 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
663 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
664 int emulate_clts(struct kvm_vcpu *vcpu);
665 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
667 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
668 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
670 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
671 bool has_error_code, u32 error_code);
673 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
674 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
675 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
676 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
677 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
678 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
679 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
680 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
681 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
682 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
684 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
685 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
687 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
688 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
690 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
691 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
692 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
693 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
694 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
695 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
696 gfn_t gfn, void *data, int offset, int len,
698 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
699 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
701 int kvm_pic_set_irq(void *opaque, int irq, int level);
703 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
705 int fx_init(struct kvm_vcpu *vcpu);
707 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
708 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
709 const u8 *new, int bytes,
710 bool guest_initiated);
711 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
712 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
713 int kvm_mmu_load(struct kvm_vcpu *vcpu);
714 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
715 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
716 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
717 struct x86_exception *exception);
718 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
719 struct x86_exception *exception);
720 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
721 struct x86_exception *exception);
722 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
723 struct x86_exception *exception);
725 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
727 int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
729 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
730 void *insn, int insn_len);
731 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
733 void kvm_enable_tdp(void);
734 void kvm_disable_tdp(void);
736 int complete_pio(struct kvm_vcpu *vcpu);
737 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
739 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
741 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
743 return (struct kvm_mmu_page *)page_private(page);
746 static inline u16 kvm_read_ldt(void)
749 asm("sldt %0" : "=g"(ldt));
753 static inline void kvm_load_ldt(u16 sel)
755 asm("lldt %0" : : "rm"(sel));
759 static inline unsigned long read_msr(unsigned long msr)
768 static inline u32 get_rdx_init_val(void)
770 return 0x600; /* P6 family */
773 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
775 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
778 #define TSS_IOPB_BASE_OFFSET 0x66
779 #define TSS_BASE_SIZE 0x68
780 #define TSS_IOPB_SIZE (65536 / 8)
781 #define TSS_REDIRECTION_SIZE (256 / 8)
782 #define RMODE_TSS_SIZE \
783 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
786 TASK_SWITCH_CALL = 0,
787 TASK_SWITCH_IRET = 1,
789 TASK_SWITCH_GATE = 3,
792 #define HF_GIF_MASK (1 << 0)
793 #define HF_HIF_MASK (1 << 1)
794 #define HF_VINTR_MASK (1 << 2)
795 #define HF_NMI_MASK (1 << 3)
796 #define HF_IRET_MASK (1 << 4)
797 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
800 * Hardware virtualization extension instructions may fault if a
801 * reboot turns off virtualization while processes are running.
802 * Trap the fault and ignore the instruction if that happens.
804 asmlinkage void kvm_spurious_fault(void);
805 extern bool kvm_rebooting;
807 #define __kvm_handle_fault_on_reboot(insn) \
808 "666: " insn "\n\t" \
810 ".pushsection .fixup, \"ax\" \n" \
812 "cmpb $0, kvm_rebooting \n\t" \
814 __ASM_SIZE(push) " $666b \n\t" \
815 "call kvm_spurious_fault \n\t" \
817 ".pushsection __ex_table, \"a\" \n\t" \
818 _ASM_PTR " 666b, 667b \n\t" \
821 #define KVM_ARCH_WANT_MMU_NOTIFIER
822 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
823 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
824 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
825 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
826 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
827 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
828 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
829 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
831 void kvm_define_shared_msr(unsigned index, u32 msr);
832 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
834 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
836 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
837 struct kvm_async_pf *work);
838 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
839 struct kvm_async_pf *work);
840 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
841 struct kvm_async_pf *work);
842 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
843 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
845 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
847 #endif /* _ASM_X86_KVM_HOST_H */