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,
153 #include <asm/kvm_emulate.h>
155 #define KVM_NR_MEM_OBJS 40
157 #define KVM_NR_DB_REGS 4
159 #define DR6_BD (1 << 13)
160 #define DR6_BS (1 << 14)
161 #define DR6_FIXED_1 0xffff0ff0
162 #define DR6_VOLATILE 0x0000e00f
164 #define DR7_BP_EN_MASK 0x000000ff
165 #define DR7_GE (1 << 9)
166 #define DR7_GD (1 << 13)
167 #define DR7_FIXED_1 0x00000400
168 #define DR7_VOLATILE 0xffff23ff
171 * We don't want allocation failures within the mmu code, so we preallocate
172 * enough memory for a single page fault in a cache.
174 struct kvm_mmu_memory_cache {
176 void *objects[KVM_NR_MEM_OBJS];
179 #define NR_PTE_CHAIN_ENTRIES 5
181 struct kvm_pte_chain {
182 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
183 struct hlist_node link;
187 * kvm_mmu_page_role, below, is defined as:
189 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
190 * bits 4:7 - page table level for this shadow (1-4)
191 * bits 8:9 - page table quadrant for 2-level guests
192 * bit 16 - direct mapping of virtual to physical mapping at gfn
193 * used for real mode and two-dimensional paging
194 * bits 17:19 - common access permissions for all ptes in this shadow page
196 union kvm_mmu_page_role {
202 unsigned pad_for_nice_hex_output:6;
211 struct kvm_mmu_page {
212 struct list_head link;
213 struct hlist_node hash_link;
216 * The following two entries are used to key the shadow page in the
220 union kvm_mmu_page_role role;
223 /* hold the gfn of each spte inside spt */
226 * One bit set per slot which has memory
227 * in this shadow page.
229 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
230 bool multimapped; /* More than one parent_pte? */
232 int root_count; /* Currently serving as active root */
233 unsigned int unsync_children;
235 u64 *parent_pte; /* !multimapped */
236 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
238 DECLARE_BITMAP(unsync_child_bitmap, 512);
241 struct kvm_pv_mmu_op_buffer {
245 char buf[512] __aligned(sizeof(long));
248 struct kvm_pio_request {
256 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
257 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
261 void (*new_cr3)(struct kvm_vcpu *vcpu);
262 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
263 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
264 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
266 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
267 struct x86_exception *fault);
268 void (*free)(struct kvm_vcpu *vcpu);
269 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
270 struct x86_exception *exception);
271 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
272 void (*prefetch_page)(struct kvm_vcpu *vcpu,
273 struct kvm_mmu_page *page);
274 int (*sync_page)(struct kvm_vcpu *vcpu,
275 struct kvm_mmu_page *sp);
276 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
277 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
278 u64 *spte, const void *pte);
281 int shadow_root_level;
282 union kvm_mmu_page_role base_role;
287 u64 rsvd_bits_mask[2][4];
291 u64 pdptrs[4]; /* pae */
294 struct kvm_vcpu_arch {
296 * rip and regs accesses must go through
297 * kvm_{register,rip}_{read,write} functions.
299 unsigned long regs[NR_VCPU_REGS];
304 unsigned long cr0_guest_owned_bits;
308 unsigned long cr4_guest_owned_bits;
313 struct kvm_lapic *apic; /* kernel irqchip context */
314 int32_t apic_arb_prio;
317 u64 ia32_misc_enable_msr;
318 bool tpr_access_reporting;
321 * Paging state of the vcpu
323 * If the vcpu runs in guest mode with two level paging this still saves
324 * the paging mode of the l1 guest. This context is always used to
330 * Paging state of an L2 guest (used for nested npt)
332 * This context will save all necessary information to walk page tables
333 * of the an L2 guest. This context is only initialized for page table
334 * walking and not for faulting since we never handle l2 page faults on
337 struct kvm_mmu nested_mmu;
340 * Pointer to the mmu context currently used for
341 * gva_to_gpa translations.
343 struct kvm_mmu *walk_mmu;
345 /* only needed in kvm_pv_mmu_op() path, but it's hot so
346 * put it here to avoid allocation */
347 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
349 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
350 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
351 struct kvm_mmu_memory_cache mmu_page_cache;
352 struct kvm_mmu_memory_cache mmu_page_header_cache;
354 gfn_t last_pt_write_gfn;
355 int last_pt_write_count;
356 u64 *last_pte_updated;
359 struct fpu guest_fpu;
362 struct kvm_pio_request pio;
365 u8 event_exit_inst_len;
367 struct kvm_queued_exception {
375 struct kvm_queued_interrupt {
381 int halt_request; /* real mode on Intel only */
384 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
385 /* emulate context */
387 struct x86_emulate_ctxt emulate_ctxt;
388 bool emulate_regs_need_sync_to_vcpu;
389 bool emulate_regs_need_sync_from_vcpu;
392 struct pvclock_vcpu_time_info hv_clock;
393 unsigned int hw_tsc_khz;
394 unsigned int time_offset;
395 struct page *time_page;
402 u32 tsc_catchup_mult;
403 s8 tsc_catchup_shift;
408 struct mtrr_state_type mtrr_state;
412 unsigned long db[KVM_NR_DB_REGS];
415 unsigned long eff_db[KVM_NR_DB_REGS];
422 /* used for guest single stepping over the given code position */
423 unsigned long singlestep_rip;
425 /* fields used by HYPER-V emulation */
428 cpumask_var_t wbinvd_dirty_mask;
432 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
433 struct gfn_to_hva_cache data;
441 unsigned int n_used_mmu_pages;
442 unsigned int n_requested_mmu_pages;
443 unsigned int n_max_mmu_pages;
444 atomic_t invlpg_counter;
445 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
447 * Hash table of struct kvm_mmu_page.
449 struct list_head active_mmu_pages;
450 struct list_head assigned_dev_head;
451 struct iommu_domain *iommu_domain;
453 struct kvm_pic *vpic;
454 struct kvm_ioapic *vioapic;
455 struct kvm_pit *vpit;
456 int vapics_in_nmi_mode;
458 unsigned int tss_addr;
459 struct page *apic_access_page;
463 struct page *ept_identity_pagetable;
464 bool ept_identity_pagetable_done;
465 gpa_t ept_identity_map_addr;
467 unsigned long irq_sources_bitmap;
469 raw_spinlock_t tsc_write_lock;
474 struct kvm_xen_hvm_config xen_hvm_config;
476 /* fields used by HYPER-V emulation */
480 #ifdef CONFIG_KVM_MMU_AUDIT
486 u32 mmu_shadow_zapped;
494 u32 remote_tlb_flush;
498 struct kvm_vcpu_stat {
508 u32 irq_window_exits;
509 u32 nmi_window_exits;
512 u32 request_irq_exits;
514 u32 host_state_reload;
518 u32 insn_emulation_fail;
524 struct x86_instruction_info;
527 int (*cpu_has_kvm_support)(void); /* __init */
528 int (*disabled_by_bios)(void); /* __init */
529 int (*hardware_enable)(void *dummy);
530 void (*hardware_disable)(void *dummy);
531 void (*check_processor_compatibility)(void *rtn);
532 int (*hardware_setup)(void); /* __init */
533 void (*hardware_unsetup)(void); /* __exit */
534 bool (*cpu_has_accelerated_tpr)(void);
535 void (*cpuid_update)(struct kvm_vcpu *vcpu);
537 /* Create, but do not attach this VCPU */
538 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
539 void (*vcpu_free)(struct kvm_vcpu *vcpu);
540 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
542 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
543 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
544 void (*vcpu_put)(struct kvm_vcpu *vcpu);
546 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
547 struct kvm_guest_debug *dbg);
548 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
549 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
550 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
551 void (*get_segment)(struct kvm_vcpu *vcpu,
552 struct kvm_segment *var, int seg);
553 int (*get_cpl)(struct kvm_vcpu *vcpu);
554 void (*set_segment)(struct kvm_vcpu *vcpu,
555 struct kvm_segment *var, int seg);
556 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
557 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
558 void (*decache_cr3)(struct kvm_vcpu *vcpu);
559 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
560 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
561 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
562 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
563 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
564 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
565 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
566 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
567 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
568 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
569 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
570 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
571 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
572 void (*fpu_activate)(struct kvm_vcpu *vcpu);
573 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
575 void (*tlb_flush)(struct kvm_vcpu *vcpu);
577 void (*run)(struct kvm_vcpu *vcpu);
578 int (*handle_exit)(struct kvm_vcpu *vcpu);
579 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
580 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
581 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
582 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
583 unsigned char *hypercall_addr);
584 void (*set_irq)(struct kvm_vcpu *vcpu);
585 void (*set_nmi)(struct kvm_vcpu *vcpu);
586 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
587 bool has_error_code, u32 error_code,
589 void (*cancel_injection)(struct kvm_vcpu *vcpu);
590 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
591 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
592 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
593 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
594 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
595 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
596 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
597 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
598 int (*get_tdp_level)(void);
599 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
600 int (*get_lpage_level)(void);
601 bool (*rdtscp_supported)(void);
602 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
604 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
606 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
608 bool (*has_wbinvd_exit)(void);
610 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz);
611 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
613 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
615 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
617 int (*check_intercept)(struct kvm_vcpu *vcpu,
618 struct x86_instruction_info *info,
619 enum x86_intercept_stage stage);
621 const struct trace_print_flags *exit_reasons_str;
624 struct kvm_arch_async_pf {
631 extern struct kvm_x86_ops *kvm_x86_ops;
633 int kvm_mmu_module_init(void);
634 void kvm_mmu_module_exit(void);
636 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
637 int kvm_mmu_create(struct kvm_vcpu *vcpu);
638 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
639 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
640 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
641 u64 dirty_mask, u64 nx_mask, u64 x_mask);
643 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
644 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
645 void kvm_mmu_zap_all(struct kvm *kvm);
646 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
647 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
649 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
651 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
652 const void *val, int bytes);
653 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
654 gpa_t addr, unsigned long *ret);
655 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
657 extern bool tdp_enabled;
659 /* control of guest tsc rate supported? */
660 extern bool kvm_has_tsc_control;
661 /* minimum supported tsc_khz for guests */
662 extern u32 kvm_min_guest_tsc_khz;
663 /* maximum supported tsc_khz for guests */
664 extern u32 kvm_max_guest_tsc_khz;
666 enum emulation_result {
667 EMULATE_DONE, /* no further processing */
668 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
669 EMULATE_FAIL, /* can't emulate this instruction */
672 #define EMULTYPE_NO_DECODE (1 << 0)
673 #define EMULTYPE_TRAP_UD (1 << 1)
674 #define EMULTYPE_SKIP (1 << 2)
675 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
676 int emulation_type, void *insn, int insn_len);
678 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
681 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
684 void kvm_enable_efer_bits(u64);
685 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
686 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
688 struct x86_emulate_ctxt;
690 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
691 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
692 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
693 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
695 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
696 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
698 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
699 bool has_error_code, u32 error_code);
701 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
702 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
703 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
704 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
705 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
706 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
707 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
708 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
709 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
710 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
712 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
713 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
715 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
716 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
718 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
719 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
720 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
721 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
722 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
723 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
724 gfn_t gfn, void *data, int offset, int len,
726 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
727 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
729 int kvm_pic_set_irq(void *opaque, int irq, int level);
731 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
733 int fx_init(struct kvm_vcpu *vcpu);
735 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
736 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
737 const u8 *new, int bytes,
738 bool guest_initiated);
739 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
740 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
741 int kvm_mmu_load(struct kvm_vcpu *vcpu);
742 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
743 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
744 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
745 struct x86_exception *exception);
746 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
747 struct x86_exception *exception);
748 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
749 struct x86_exception *exception);
750 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
751 struct x86_exception *exception);
753 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
755 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
756 void *insn, int insn_len);
757 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
759 void kvm_enable_tdp(void);
760 void kvm_disable_tdp(void);
762 int complete_pio(struct kvm_vcpu *vcpu);
763 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
765 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
767 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
769 return (struct kvm_mmu_page *)page_private(page);
772 static inline u16 kvm_read_ldt(void)
775 asm("sldt %0" : "=g"(ldt));
779 static inline void kvm_load_ldt(u16 sel)
781 asm("lldt %0" : : "rm"(sel));
785 static inline unsigned long read_msr(unsigned long msr)
794 static inline u32 get_rdx_init_val(void)
796 return 0x600; /* P6 family */
799 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
801 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
804 #define TSS_IOPB_BASE_OFFSET 0x66
805 #define TSS_BASE_SIZE 0x68
806 #define TSS_IOPB_SIZE (65536 / 8)
807 #define TSS_REDIRECTION_SIZE (256 / 8)
808 #define RMODE_TSS_SIZE \
809 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
812 TASK_SWITCH_CALL = 0,
813 TASK_SWITCH_IRET = 1,
815 TASK_SWITCH_GATE = 3,
818 #define HF_GIF_MASK (1 << 0)
819 #define HF_HIF_MASK (1 << 1)
820 #define HF_VINTR_MASK (1 << 2)
821 #define HF_NMI_MASK (1 << 3)
822 #define HF_IRET_MASK (1 << 4)
823 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
826 * Hardware virtualization extension instructions may fault if a
827 * reboot turns off virtualization while processes are running.
828 * Trap the fault and ignore the instruction if that happens.
830 asmlinkage void kvm_spurious_fault(void);
831 extern bool kvm_rebooting;
833 #define __kvm_handle_fault_on_reboot(insn) \
834 "666: " insn "\n\t" \
836 ".pushsection .fixup, \"ax\" \n" \
838 "cmpb $0, kvm_rebooting \n\t" \
840 __ASM_SIZE(push) " $666b \n\t" \
841 "call kvm_spurious_fault \n\t" \
843 ".pushsection __ex_table, \"a\" \n\t" \
844 _ASM_PTR " 666b, 667b \n\t" \
847 #define KVM_ARCH_WANT_MMU_NOTIFIER
848 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
849 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
850 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
851 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
852 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
853 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
854 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
855 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
857 void kvm_define_shared_msr(unsigned index, u32 msr);
858 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
860 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
862 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
863 struct kvm_async_pf *work);
864 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
865 struct kvm_async_pf *work);
866 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
867 struct kvm_async_pf *work);
868 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
869 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
871 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
873 #endif /* _ASM_X86_KVM_HOST_H */