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 254
30 #define KVM_SOFT_MAX_VCPUS 64
31 #define KVM_MEMORY_SLOTS 32
32 /* memory slots that does not exposed to userspace */
33 #define KVM_PRIVATE_MEM_SLOTS 4
34 #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
36 #define KVM_MMIO_SIZE 16
38 #define KVM_PIO_PAGE_OFFSET 1
39 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
41 #define CR0_RESERVED_BITS \
42 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
43 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
44 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
46 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
47 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
48 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
49 0xFFFFFF0000000000ULL)
50 #define CR4_RESERVED_BITS \
51 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
52 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
53 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR \
54 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
55 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
57 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
61 #define INVALID_PAGE (~(hpa_t)0)
62 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
64 #define UNMAPPED_GVA (~(gpa_t)0)
66 /* KVM Hugepage definitions for x86 */
67 #define KVM_NR_PAGE_SIZES 3
68 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
69 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
70 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
71 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
72 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
90 #define SELECTOR_TI_MASK (1 << 2)
91 #define SELECTOR_RPL_MASK 0x03
95 #define KVM_PERMILLE_MMU_PAGES 20
96 #define KVM_MIN_ALLOC_MMU_PAGES 64
97 #define KVM_MMU_HASH_SHIFT 10
98 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
99 #define KVM_MIN_FREE_MMU_PAGES 5
100 #define KVM_REFILL_PAGES 25
101 #define KVM_MAX_CPUID_ENTRIES 80
102 #define KVM_NR_FIXED_MTRR_REGION 88
103 #define KVM_NR_VAR_MTRR 8
105 #define ASYNC_PF_PER_VCPU 64
107 extern raw_spinlock_t kvm_lock;
108 extern struct list_head vm_list;
138 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
156 #include <asm/kvm_emulate.h>
158 #define KVM_NR_MEM_OBJS 40
160 #define KVM_NR_DB_REGS 4
162 #define DR6_BD (1 << 13)
163 #define DR6_BS (1 << 14)
164 #define DR6_FIXED_1 0xffff0ff0
165 #define DR6_VOLATILE 0x0000e00f
167 #define DR7_BP_EN_MASK 0x000000ff
168 #define DR7_GE (1 << 9)
169 #define DR7_GD (1 << 13)
170 #define DR7_FIXED_1 0x00000400
171 #define DR7_VOLATILE 0xffff23ff
174 * We don't want allocation failures within the mmu code, so we preallocate
175 * enough memory for a single page fault in a cache.
177 struct kvm_mmu_memory_cache {
179 void *objects[KVM_NR_MEM_OBJS];
182 #define NR_PTE_CHAIN_ENTRIES 5
184 struct kvm_pte_chain {
185 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
186 struct hlist_node link;
190 * kvm_mmu_page_role, below, is defined as:
192 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
193 * bits 4:7 - page table level for this shadow (1-4)
194 * bits 8:9 - page table quadrant for 2-level guests
195 * bit 16 - direct mapping of virtual to physical mapping at gfn
196 * used for real mode and two-dimensional paging
197 * bits 17:19 - common access permissions for all ptes in this shadow page
199 union kvm_mmu_page_role {
205 unsigned pad_for_nice_hex_output:6;
211 unsigned smep_andnot_wp:1;
215 struct kvm_mmu_page {
216 struct list_head link;
217 struct hlist_node hash_link;
220 * The following two entries are used to key the shadow page in the
224 union kvm_mmu_page_role role;
227 /* hold the gfn of each spte inside spt */
230 * One bit set per slot which has memory
231 * in this shadow page.
233 DECLARE_BITMAP(slot_bitmap, KVM_MEM_SLOTS_NUM);
235 int root_count; /* Currently serving as active root */
236 unsigned int unsync_children;
237 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
238 DECLARE_BITMAP(unsync_child_bitmap, 512);
241 int clear_spte_count;
244 int write_flooding_count;
249 struct kvm_pio_request {
257 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
258 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
262 void (*new_cr3)(struct kvm_vcpu *vcpu);
263 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
264 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
265 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
266 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
268 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
269 struct x86_exception *fault);
270 void (*free)(struct kvm_vcpu *vcpu);
271 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
272 struct x86_exception *exception);
273 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
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 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
346 struct kvm_mmu_memory_cache mmu_page_cache;
347 struct kvm_mmu_memory_cache mmu_page_header_cache;
349 struct fpu guest_fpu;
352 struct kvm_pio_request pio;
355 u8 event_exit_inst_len;
357 struct kvm_queued_exception {
365 struct kvm_queued_interrupt {
371 int halt_request; /* real mode on Intel only */
374 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
375 /* emulate context */
377 struct x86_emulate_ctxt emulate_ctxt;
378 bool emulate_regs_need_sync_to_vcpu;
379 bool emulate_regs_need_sync_from_vcpu;
382 struct pvclock_vcpu_time_info hv_clock;
383 unsigned int hw_tsc_khz;
384 unsigned int time_offset;
385 struct page *time_page;
391 struct gfn_to_hva_cache stime;
392 struct kvm_steal_time steal;
401 u32 tsc_catchup_mult;
402 s8 tsc_catchup_shift;
404 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
405 unsigned nmi_pending; /* NMI queued after currently running handler */
406 bool nmi_injected; /* Trying to inject an NMI this entry */
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 /* Cache MMIO info */
427 /* used for guest single stepping over the given code position */
428 unsigned long singlestep_rip;
430 /* fields used by HYPER-V emulation */
433 cpumask_var_t wbinvd_dirty_mask;
435 unsigned long last_retry_eip;
436 unsigned long last_retry_addr;
440 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
441 struct gfn_to_hva_cache data;
449 unsigned int n_used_mmu_pages;
450 unsigned int n_requested_mmu_pages;
451 unsigned int n_max_mmu_pages;
452 unsigned int indirect_shadow_pages;
453 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
455 * Hash table of struct kvm_mmu_page.
457 struct list_head active_mmu_pages;
458 struct list_head assigned_dev_head;
459 struct iommu_domain *iommu_domain;
461 struct kvm_pic *vpic;
462 struct kvm_ioapic *vioapic;
463 struct kvm_pit *vpit;
464 int vapics_in_nmi_mode;
466 unsigned int tss_addr;
467 struct page *apic_access_page;
471 struct page *ept_identity_pagetable;
472 bool ept_identity_pagetable_done;
473 gpa_t ept_identity_map_addr;
475 unsigned long irq_sources_bitmap;
477 raw_spinlock_t tsc_write_lock;
482 struct kvm_xen_hvm_config xen_hvm_config;
484 /* fields used by HYPER-V emulation */
488 atomic_t reader_counter;
490 #ifdef CONFIG_KVM_MMU_AUDIT
496 u32 mmu_shadow_zapped;
504 u32 remote_tlb_flush;
508 struct kvm_vcpu_stat {
518 u32 irq_window_exits;
519 u32 nmi_window_exits;
522 u32 request_irq_exits;
524 u32 host_state_reload;
528 u32 insn_emulation_fail;
534 struct x86_instruction_info;
537 int (*cpu_has_kvm_support)(void); /* __init */
538 int (*disabled_by_bios)(void); /* __init */
539 int (*hardware_enable)(void *dummy);
540 void (*hardware_disable)(void *dummy);
541 void (*check_processor_compatibility)(void *rtn);
542 int (*hardware_setup)(void); /* __init */
543 void (*hardware_unsetup)(void); /* __exit */
544 bool (*cpu_has_accelerated_tpr)(void);
545 void (*cpuid_update)(struct kvm_vcpu *vcpu);
547 /* Create, but do not attach this VCPU */
548 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
549 void (*vcpu_free)(struct kvm_vcpu *vcpu);
550 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
552 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
553 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
554 void (*vcpu_put)(struct kvm_vcpu *vcpu);
556 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
557 struct kvm_guest_debug *dbg);
558 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
559 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
560 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
561 void (*get_segment)(struct kvm_vcpu *vcpu,
562 struct kvm_segment *var, int seg);
563 int (*get_cpl)(struct kvm_vcpu *vcpu);
564 void (*set_segment)(struct kvm_vcpu *vcpu,
565 struct kvm_segment *var, int seg);
566 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
567 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
568 void (*decache_cr3)(struct kvm_vcpu *vcpu);
569 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
570 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
571 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
572 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
573 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
574 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
575 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
576 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
577 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
578 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
579 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
580 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
581 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
582 void (*fpu_activate)(struct kvm_vcpu *vcpu);
583 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
585 void (*tlb_flush)(struct kvm_vcpu *vcpu);
587 void (*run)(struct kvm_vcpu *vcpu);
588 int (*handle_exit)(struct kvm_vcpu *vcpu);
589 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
590 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
591 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
592 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
593 unsigned char *hypercall_addr);
594 void (*set_irq)(struct kvm_vcpu *vcpu);
595 void (*set_nmi)(struct kvm_vcpu *vcpu);
596 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
597 bool has_error_code, u32 error_code,
599 void (*cancel_injection)(struct kvm_vcpu *vcpu);
600 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
601 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
602 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
603 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
604 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
605 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
606 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
607 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
608 int (*get_tdp_level)(void);
609 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
610 int (*get_lpage_level)(void);
611 bool (*rdtscp_supported)(void);
612 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
614 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
616 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
618 bool (*has_wbinvd_exit)(void);
620 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz);
621 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
623 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
624 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu);
626 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
628 int (*check_intercept)(struct kvm_vcpu *vcpu,
629 struct x86_instruction_info *info,
630 enum x86_intercept_stage stage);
633 struct kvm_arch_async_pf {
640 extern struct kvm_x86_ops *kvm_x86_ops;
642 int kvm_mmu_module_init(void);
643 void kvm_mmu_module_exit(void);
645 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
646 int kvm_mmu_create(struct kvm_vcpu *vcpu);
647 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
648 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
649 u64 dirty_mask, u64 nx_mask, u64 x_mask);
651 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
652 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
653 int kvm_mmu_rmap_write_protect(struct kvm *kvm, u64 gfn,
654 struct kvm_memory_slot *slot);
655 void kvm_mmu_zap_all(struct kvm *kvm);
656 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
657 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
659 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
661 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
662 const void *val, int bytes);
663 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
665 extern bool tdp_enabled;
667 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
669 /* control of guest tsc rate supported? */
670 extern bool kvm_has_tsc_control;
671 /* minimum supported tsc_khz for guests */
672 extern u32 kvm_min_guest_tsc_khz;
673 /* maximum supported tsc_khz for guests */
674 extern u32 kvm_max_guest_tsc_khz;
676 enum emulation_result {
677 EMULATE_DONE, /* no further processing */
678 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
679 EMULATE_FAIL, /* can't emulate this instruction */
682 #define EMULTYPE_NO_DECODE (1 << 0)
683 #define EMULTYPE_TRAP_UD (1 << 1)
684 #define EMULTYPE_SKIP (1 << 2)
685 #define EMULTYPE_RETRY (1 << 3)
686 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
687 int emulation_type, void *insn, int insn_len);
689 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
692 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
695 void kvm_enable_efer_bits(u64);
696 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
697 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
699 struct x86_emulate_ctxt;
701 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
702 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
703 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
704 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
706 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
707 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
709 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
710 bool has_error_code, u32 error_code);
712 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
713 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
714 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
715 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
716 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
717 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
718 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
719 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
720 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
721 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
723 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
724 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
726 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
727 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
729 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
730 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
731 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
732 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
733 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
734 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
735 gfn_t gfn, void *data, int offset, int len,
737 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
738 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
740 int kvm_pic_set_irq(void *opaque, int irq, int level);
742 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
744 int fx_init(struct kvm_vcpu *vcpu);
746 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
747 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
748 const u8 *new, int bytes);
749 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
750 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
751 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
752 int kvm_mmu_load(struct kvm_vcpu *vcpu);
753 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
754 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
755 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
756 struct x86_exception *exception);
757 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
758 struct x86_exception *exception);
759 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
760 struct x86_exception *exception);
761 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
762 struct x86_exception *exception);
764 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
766 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
767 void *insn, int insn_len);
768 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
770 void kvm_enable_tdp(void);
771 void kvm_disable_tdp(void);
773 int complete_pio(struct kvm_vcpu *vcpu);
774 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
776 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
778 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
780 return (struct kvm_mmu_page *)page_private(page);
783 static inline u16 kvm_read_ldt(void)
786 asm("sldt %0" : "=g"(ldt));
790 static inline void kvm_load_ldt(u16 sel)
792 asm("lldt %0" : : "rm"(sel));
796 static inline unsigned long read_msr(unsigned long msr)
805 static inline u32 get_rdx_init_val(void)
807 return 0x600; /* P6 family */
810 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
812 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
815 #define TSS_IOPB_BASE_OFFSET 0x66
816 #define TSS_BASE_SIZE 0x68
817 #define TSS_IOPB_SIZE (65536 / 8)
818 #define TSS_REDIRECTION_SIZE (256 / 8)
819 #define RMODE_TSS_SIZE \
820 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
823 TASK_SWITCH_CALL = 0,
824 TASK_SWITCH_IRET = 1,
826 TASK_SWITCH_GATE = 3,
829 #define HF_GIF_MASK (1 << 0)
830 #define HF_HIF_MASK (1 << 1)
831 #define HF_VINTR_MASK (1 << 2)
832 #define HF_NMI_MASK (1 << 3)
833 #define HF_IRET_MASK (1 << 4)
834 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
837 * Hardware virtualization extension instructions may fault if a
838 * reboot turns off virtualization while processes are running.
839 * Trap the fault and ignore the instruction if that happens.
841 asmlinkage void kvm_spurious_fault(void);
842 extern bool kvm_rebooting;
844 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
845 "666: " insn "\n\t" \
847 ".pushsection .fixup, \"ax\" \n" \
849 cleanup_insn "\n\t" \
850 "cmpb $0, kvm_rebooting \n\t" \
852 __ASM_SIZE(push) " $666b \n\t" \
853 "call kvm_spurious_fault \n\t" \
855 ".pushsection __ex_table, \"a\" \n\t" \
856 _ASM_PTR " 666b, 667b \n\t" \
859 #define __kvm_handle_fault_on_reboot(insn) \
860 ____kvm_handle_fault_on_reboot(insn, "")
862 #define KVM_ARCH_WANT_MMU_NOTIFIER
863 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
864 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
865 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
866 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
867 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
868 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
869 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
870 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
872 void kvm_define_shared_msr(unsigned index, u32 msr);
873 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
875 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
877 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
878 struct kvm_async_pf *work);
879 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
880 struct kvm_async_pf *work);
881 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
882 struct kvm_async_pf *work);
883 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
884 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
886 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
888 #endif /* _ASM_X86_KVM_HOST_H */