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
33 #define KVM_MMIO_SIZE 16
35 #define KVM_PIO_PAGE_OFFSET 1
36 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
38 #define CR0_RESERVED_BITS \
39 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
40 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
41 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
43 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
44 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
45 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
46 0xFFFFFF0000000000ULL)
47 #define CR4_RESERVED_BITS \
48 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
49 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
50 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR \
52 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
54 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
58 #define INVALID_PAGE (~(hpa_t)0)
59 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
61 #define UNMAPPED_GVA (~(gpa_t)0)
63 /* KVM Hugepage definitions for x86 */
64 #define KVM_NR_PAGE_SIZES 3
65 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
66 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
67 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
68 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
69 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
87 #define SELECTOR_TI_MASK (1 << 2)
88 #define SELECTOR_RPL_MASK 0x03
92 #define KVM_PERMILLE_MMU_PAGES 20
93 #define KVM_MIN_ALLOC_MMU_PAGES 64
94 #define KVM_MMU_HASH_SHIFT 10
95 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
96 #define KVM_MIN_FREE_MMU_PAGES 5
97 #define KVM_REFILL_PAGES 25
98 #define KVM_MAX_CPUID_ENTRIES 80
99 #define KVM_NR_FIXED_MTRR_REGION 88
100 #define KVM_NR_VAR_MTRR 8
102 #define ASYNC_PF_PER_VCPU 64
104 extern raw_spinlock_t kvm_lock;
105 extern struct list_head vm_list;
135 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
152 #include <asm/kvm_emulate.h>
154 #define KVM_NR_MEM_OBJS 40
156 #define KVM_NR_DB_REGS 4
158 #define DR6_BD (1 << 13)
159 #define DR6_BS (1 << 14)
160 #define DR6_FIXED_1 0xffff0ff0
161 #define DR6_VOLATILE 0x0000e00f
163 #define DR7_BP_EN_MASK 0x000000ff
164 #define DR7_GE (1 << 9)
165 #define DR7_GD (1 << 13)
166 #define DR7_FIXED_1 0x00000400
167 #define DR7_VOLATILE 0xffff23ff
170 * We don't want allocation failures within the mmu code, so we preallocate
171 * enough memory for a single page fault in a cache.
173 struct kvm_mmu_memory_cache {
175 void *objects[KVM_NR_MEM_OBJS];
178 #define NR_PTE_CHAIN_ENTRIES 5
180 struct kvm_pte_chain {
181 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
182 struct hlist_node link;
186 * kvm_mmu_page_role, below, is defined as:
188 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
189 * bits 4:7 - page table level for this shadow (1-4)
190 * bits 8:9 - page table quadrant for 2-level guests
191 * bit 16 - direct mapping of virtual to physical mapping at gfn
192 * used for real mode and two-dimensional paging
193 * bits 17:19 - common access permissions for all ptes in this shadow page
195 union kvm_mmu_page_role {
201 unsigned pad_for_nice_hex_output:6;
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_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
229 bool multimapped; /* More than one parent_pte? */
231 int root_count; /* Currently serving as active root */
232 unsigned int unsync_children;
234 u64 *parent_pte; /* !multimapped */
235 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
237 DECLARE_BITMAP(unsync_child_bitmap, 512);
240 struct kvm_pv_mmu_op_buffer {
244 char buf[512] __aligned(sizeof(long));
247 struct kvm_pio_request {
255 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
256 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
260 void (*new_cr3)(struct kvm_vcpu *vcpu);
261 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
262 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
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 void (*prefetch_page)(struct kvm_vcpu *vcpu,
272 struct kvm_mmu_page *page);
273 int (*sync_page)(struct kvm_vcpu *vcpu,
274 struct kvm_mmu_page *sp);
275 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
276 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
277 u64 *spte, const void *pte);
280 int shadow_root_level;
281 union kvm_mmu_page_role base_role;
286 u64 rsvd_bits_mask[2][4];
290 u64 pdptrs[4]; /* pae */
293 struct kvm_vcpu_arch {
295 * rip and regs accesses must go through
296 * kvm_{register,rip}_{read,write} functions.
298 unsigned long regs[NR_VCPU_REGS];
303 unsigned long cr0_guest_owned_bits;
307 unsigned long cr4_guest_owned_bits;
312 struct kvm_lapic *apic; /* kernel irqchip context */
313 int32_t apic_arb_prio;
316 u64 ia32_misc_enable_msr;
317 bool tpr_access_reporting;
320 * Paging state of the vcpu
322 * If the vcpu runs in guest mode with two level paging this still saves
323 * the paging mode of the l1 guest. This context is always used to
329 * Paging state of an L2 guest (used for nested npt)
331 * This context will save all necessary information to walk page tables
332 * of the an L2 guest. This context is only initialized for page table
333 * walking and not for faulting since we never handle l2 page faults on
336 struct kvm_mmu nested_mmu;
339 * Pointer to the mmu context currently used for
340 * gva_to_gpa translations.
342 struct kvm_mmu *walk_mmu;
344 /* only needed in kvm_pv_mmu_op() path, but it's hot so
345 * put it here to avoid allocation */
346 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
348 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
349 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
350 struct kvm_mmu_memory_cache mmu_page_cache;
351 struct kvm_mmu_memory_cache mmu_page_header_cache;
353 gfn_t last_pt_write_gfn;
354 int last_pt_write_count;
355 u64 *last_pte_updated;
358 struct fpu guest_fpu;
361 struct kvm_pio_request pio;
364 u8 event_exit_inst_len;
366 struct kvm_queued_exception {
374 struct kvm_queued_interrupt {
380 int halt_request; /* real mode on Intel only */
383 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
384 /* emulate context */
386 struct x86_emulate_ctxt emulate_ctxt;
387 bool emulate_regs_need_sync_to_vcpu;
388 bool emulate_regs_need_sync_from_vcpu;
391 struct pvclock_vcpu_time_info hv_clock;
392 unsigned int hw_tsc_khz;
393 unsigned int time_offset;
394 struct page *time_page;
401 u32 tsc_catchup_mult;
402 s8 tsc_catchup_shift;
407 struct mtrr_state_type mtrr_state;
411 unsigned long db[KVM_NR_DB_REGS];
414 unsigned long eff_db[KVM_NR_DB_REGS];
421 /* used for guest single stepping over the given code position */
422 unsigned long singlestep_rip;
424 /* fields used by HYPER-V emulation */
427 cpumask_var_t wbinvd_dirty_mask;
431 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
432 struct gfn_to_hva_cache data;
440 unsigned int n_used_mmu_pages;
441 unsigned int n_requested_mmu_pages;
442 unsigned int n_max_mmu_pages;
443 atomic_t invlpg_counter;
444 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
446 * Hash table of struct kvm_mmu_page.
448 struct list_head active_mmu_pages;
449 struct list_head assigned_dev_head;
450 struct iommu_domain *iommu_domain;
452 struct kvm_pic *vpic;
453 struct kvm_ioapic *vioapic;
454 struct kvm_pit *vpit;
455 int vapics_in_nmi_mode;
457 unsigned int tss_addr;
458 struct page *apic_access_page;
462 struct page *ept_identity_pagetable;
463 bool ept_identity_pagetable_done;
464 gpa_t ept_identity_map_addr;
466 unsigned long irq_sources_bitmap;
468 raw_spinlock_t tsc_write_lock;
473 struct kvm_xen_hvm_config xen_hvm_config;
475 /* fields used by HYPER-V emulation */
479 #ifdef CONFIG_KVM_MMU_AUDIT
485 u32 mmu_shadow_zapped;
493 u32 remote_tlb_flush;
497 struct kvm_vcpu_stat {
507 u32 irq_window_exits;
508 u32 nmi_window_exits;
511 u32 request_irq_exits;
513 u32 host_state_reload;
517 u32 insn_emulation_fail;
523 struct x86_instruction_info;
526 int (*cpu_has_kvm_support)(void); /* __init */
527 int (*disabled_by_bios)(void); /* __init */
528 int (*hardware_enable)(void *dummy);
529 void (*hardware_disable)(void *dummy);
530 void (*check_processor_compatibility)(void *rtn);
531 int (*hardware_setup)(void); /* __init */
532 void (*hardware_unsetup)(void); /* __exit */
533 bool (*cpu_has_accelerated_tpr)(void);
534 void (*cpuid_update)(struct kvm_vcpu *vcpu);
536 /* Create, but do not attach this VCPU */
537 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
538 void (*vcpu_free)(struct kvm_vcpu *vcpu);
539 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
541 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
542 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
543 void (*vcpu_put)(struct kvm_vcpu *vcpu);
545 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
546 struct kvm_guest_debug *dbg);
547 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
548 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
549 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
550 void (*get_segment)(struct kvm_vcpu *vcpu,
551 struct kvm_segment *var, int seg);
552 int (*get_cpl)(struct kvm_vcpu *vcpu);
553 void (*set_segment)(struct kvm_vcpu *vcpu,
554 struct kvm_segment *var, int seg);
555 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
556 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
557 void (*decache_cr3)(struct kvm_vcpu *vcpu);
558 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
559 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
560 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
561 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
562 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
563 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
564 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
565 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
566 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
567 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
568 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
569 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
570 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
571 void (*fpu_activate)(struct kvm_vcpu *vcpu);
572 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
574 void (*tlb_flush)(struct kvm_vcpu *vcpu);
576 void (*run)(struct kvm_vcpu *vcpu);
577 int (*handle_exit)(struct kvm_vcpu *vcpu);
578 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
579 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
580 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
581 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
582 unsigned char *hypercall_addr);
583 void (*set_irq)(struct kvm_vcpu *vcpu);
584 void (*set_nmi)(struct kvm_vcpu *vcpu);
585 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
586 bool has_error_code, u32 error_code,
588 void (*cancel_injection)(struct kvm_vcpu *vcpu);
589 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
590 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
591 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
592 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
593 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
594 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
595 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
596 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
597 int (*get_tdp_level)(void);
598 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
599 int (*get_lpage_level)(void);
600 bool (*rdtscp_supported)(void);
601 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
603 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
605 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
607 bool (*has_wbinvd_exit)(void);
609 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz);
610 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
612 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
614 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
616 int (*check_intercept)(struct kvm_vcpu *vcpu,
617 struct x86_instruction_info *info,
618 enum x86_intercept_stage stage);
620 const struct trace_print_flags *exit_reasons_str;
623 struct kvm_arch_async_pf {
630 extern struct kvm_x86_ops *kvm_x86_ops;
632 int kvm_mmu_module_init(void);
633 void kvm_mmu_module_exit(void);
635 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
636 int kvm_mmu_create(struct kvm_vcpu *vcpu);
637 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
638 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
639 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
640 u64 dirty_mask, u64 nx_mask, u64 x_mask);
642 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
643 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
644 void kvm_mmu_zap_all(struct kvm *kvm);
645 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
646 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
648 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
650 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
651 const void *val, int bytes);
652 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
653 gpa_t addr, unsigned long *ret);
654 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
656 extern bool tdp_enabled;
658 /* control of guest tsc rate supported? */
659 extern bool kvm_has_tsc_control;
660 /* minimum supported tsc_khz for guests */
661 extern u32 kvm_min_guest_tsc_khz;
662 /* maximum supported tsc_khz for guests */
663 extern u32 kvm_max_guest_tsc_khz;
665 enum emulation_result {
666 EMULATE_DONE, /* no further processing */
667 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
668 EMULATE_FAIL, /* can't emulate this instruction */
671 #define EMULTYPE_NO_DECODE (1 << 0)
672 #define EMULTYPE_TRAP_UD (1 << 1)
673 #define EMULTYPE_SKIP (1 << 2)
674 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
675 int emulation_type, void *insn, int insn_len);
677 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
680 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
683 void kvm_enable_efer_bits(u64);
684 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
685 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
687 struct x86_emulate_ctxt;
689 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
690 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
691 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
692 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
694 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
695 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
697 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
698 bool has_error_code, u32 error_code);
700 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
701 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
702 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
703 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
704 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
705 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
706 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
707 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
708 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
709 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
711 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
712 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
714 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
715 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
717 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
718 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
719 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
720 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
721 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
722 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
723 gfn_t gfn, void *data, int offset, int len,
725 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
726 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
728 int kvm_pic_set_irq(void *opaque, int irq, int level);
730 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
732 int fx_init(struct kvm_vcpu *vcpu);
734 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
735 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
736 const u8 *new, int bytes,
737 bool guest_initiated);
738 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
739 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
740 int kvm_mmu_load(struct kvm_vcpu *vcpu);
741 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
742 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
743 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
744 struct x86_exception *exception);
745 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
746 struct x86_exception *exception);
747 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
748 struct x86_exception *exception);
749 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
750 struct x86_exception *exception);
752 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
754 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
755 void *insn, int insn_len);
756 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
758 void kvm_enable_tdp(void);
759 void kvm_disable_tdp(void);
761 int complete_pio(struct kvm_vcpu *vcpu);
762 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
764 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
766 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
768 return (struct kvm_mmu_page *)page_private(page);
771 static inline u16 kvm_read_ldt(void)
774 asm("sldt %0" : "=g"(ldt));
778 static inline void kvm_load_ldt(u16 sel)
780 asm("lldt %0" : : "rm"(sel));
784 static inline unsigned long read_msr(unsigned long msr)
793 static inline u32 get_rdx_init_val(void)
795 return 0x600; /* P6 family */
798 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
800 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
803 #define TSS_IOPB_BASE_OFFSET 0x66
804 #define TSS_BASE_SIZE 0x68
805 #define TSS_IOPB_SIZE (65536 / 8)
806 #define TSS_REDIRECTION_SIZE (256 / 8)
807 #define RMODE_TSS_SIZE \
808 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
811 TASK_SWITCH_CALL = 0,
812 TASK_SWITCH_IRET = 1,
814 TASK_SWITCH_GATE = 3,
817 #define HF_GIF_MASK (1 << 0)
818 #define HF_HIF_MASK (1 << 1)
819 #define HF_VINTR_MASK (1 << 2)
820 #define HF_NMI_MASK (1 << 3)
821 #define HF_IRET_MASK (1 << 4)
822 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
825 * Hardware virtualization extension instructions may fault if a
826 * reboot turns off virtualization while processes are running.
827 * Trap the fault and ignore the instruction if that happens.
829 asmlinkage void kvm_spurious_fault(void);
830 extern bool kvm_rebooting;
832 #define __kvm_handle_fault_on_reboot(insn) \
833 "666: " insn "\n\t" \
835 ".pushsection .fixup, \"ax\" \n" \
837 "cmpb $0, kvm_rebooting \n\t" \
839 __ASM_SIZE(push) " $666b \n\t" \
840 "call kvm_spurious_fault \n\t" \
842 ".pushsection __ex_table, \"a\" \n\t" \
843 _ASM_PTR " 666b, 667b \n\t" \
846 #define KVM_ARCH_WANT_MMU_NOTIFIER
847 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
848 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
849 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
850 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
851 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
852 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
853 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
854 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
856 void kvm_define_shared_msr(unsigned index, u32 msr);
857 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
859 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
861 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
862 struct kvm_async_pf *work);
863 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
864 struct kvm_async_pf *work);
865 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
866 struct kvm_async_pf *work);
867 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
868 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
870 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
872 #endif /* _ASM_X86_KVM_HOST_H */