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_MMIO_SIZE 16
36 #define KVM_PIO_PAGE_OFFSET 1
37 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
39 #define CR0_RESERVED_BITS \
40 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
41 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
42 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
44 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
45 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
46 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
47 0xFFFFFF0000000000ULL)
48 #define CR4_RESERVED_BITS \
49 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
50 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
51 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR \
52 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
53 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
55 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
59 #define INVALID_PAGE (~(hpa_t)0)
60 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
62 #define UNMAPPED_GVA (~(gpa_t)0)
64 /* KVM Hugepage definitions for x86 */
65 #define KVM_NR_PAGE_SIZES 3
66 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
67 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
68 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
69 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
70 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
89 #define SELECTOR_TI_MASK (1 << 2)
90 #define SELECTOR_RPL_MASK 0x03
94 #define KVM_PERMILLE_MMU_PAGES 20
95 #define KVM_MIN_ALLOC_MMU_PAGES 64
96 #define KVM_MMU_HASH_SHIFT 10
97 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
98 #define KVM_MIN_FREE_MMU_PAGES 5
99 #define KVM_REFILL_PAGES 25
100 #define KVM_MAX_CPUID_ENTRIES 80
101 #define KVM_NR_FIXED_MTRR_REGION 88
102 #define KVM_NR_VAR_MTRR 10
104 #define ASYNC_PF_PER_VCPU 64
106 extern raw_spinlock_t kvm_lock;
107 extern struct list_head vm_list;
137 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
155 #include <asm/kvm_emulate.h>
157 #define KVM_NR_MEM_OBJS 40
159 #define KVM_NR_DB_REGS 4
161 #define DR6_BD (1 << 13)
162 #define DR6_BS (1 << 14)
163 #define DR6_FIXED_1 0xffff0ff0
164 #define DR6_VOLATILE 0x0000e00f
166 #define DR7_BP_EN_MASK 0x000000ff
167 #define DR7_GE (1 << 9)
168 #define DR7_GD (1 << 13)
169 #define DR7_FIXED_1 0x00000400
170 #define DR7_VOLATILE 0xffff23ff
173 * We don't want allocation failures within the mmu code, so we preallocate
174 * enough memory for a single page fault in a cache.
176 struct kvm_mmu_memory_cache {
178 void *objects[KVM_NR_MEM_OBJS];
181 #define NR_PTE_CHAIN_ENTRIES 5
183 struct kvm_pte_chain {
184 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
185 struct hlist_node link;
189 * kvm_mmu_page_role, below, is defined as:
191 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
192 * bits 4:7 - page table level for this shadow (1-4)
193 * bits 8:9 - page table quadrant for 2-level guests
194 * bit 16 - direct mapping of virtual to physical mapping at gfn
195 * used for real mode and two-dimensional paging
196 * bits 17:19 - common access permissions for all ptes in this shadow page
198 union kvm_mmu_page_role {
204 unsigned pad_for_nice_hex_output:6;
210 unsigned smep_andnot_wp:1;
214 struct kvm_mmu_page {
215 struct list_head link;
216 struct hlist_node hash_link;
219 * The following two entries are used to key the shadow page in the
223 union kvm_mmu_page_role role;
226 /* hold the gfn of each spte inside spt */
229 * One bit set per slot which has memory
230 * in this shadow page.
232 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
234 int root_count; /* Currently serving as active root */
235 unsigned int unsync_children;
236 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
237 DECLARE_BITMAP(unsync_child_bitmap, 512);
240 int clear_spte_count;
246 struct kvm_pv_mmu_op_buffer {
250 char buf[512] __aligned(sizeof(long));
253 struct kvm_pio_request {
261 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
262 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
266 void (*new_cr3)(struct kvm_vcpu *vcpu);
267 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
268 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
269 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
270 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
272 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
273 struct x86_exception *fault);
274 void (*free)(struct kvm_vcpu *vcpu);
275 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
276 struct x86_exception *exception);
277 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
278 int (*sync_page)(struct kvm_vcpu *vcpu,
279 struct kvm_mmu_page *sp);
280 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
281 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
282 u64 *spte, const void *pte);
285 int shadow_root_level;
286 union kvm_mmu_page_role base_role;
291 u64 rsvd_bits_mask[2][4];
295 u64 pdptrs[4]; /* pae */
298 struct kvm_vcpu_arch {
300 * rip and regs accesses must go through
301 * kvm_{register,rip}_{read,write} functions.
303 unsigned long regs[NR_VCPU_REGS];
308 unsigned long cr0_guest_owned_bits;
312 unsigned long cr4_guest_owned_bits;
317 struct kvm_lapic *apic; /* kernel irqchip context */
318 int32_t apic_arb_prio;
321 u64 ia32_misc_enable_msr;
322 bool tpr_access_reporting;
325 * Paging state of the vcpu
327 * If the vcpu runs in guest mode with two level paging this still saves
328 * the paging mode of the l1 guest. This context is always used to
334 * Paging state of an L2 guest (used for nested npt)
336 * This context will save all necessary information to walk page tables
337 * of the an L2 guest. This context is only initialized for page table
338 * walking and not for faulting since we never handle l2 page faults on
341 struct kvm_mmu nested_mmu;
344 * Pointer to the mmu context currently used for
345 * gva_to_gpa translations.
347 struct kvm_mmu *walk_mmu;
349 /* only needed in kvm_pv_mmu_op() path, but it's hot so
350 * put it here to avoid allocation */
351 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
353 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
354 struct kvm_mmu_memory_cache mmu_page_cache;
355 struct kvm_mmu_memory_cache mmu_page_header_cache;
357 gfn_t last_pt_write_gfn;
358 int last_pt_write_count;
359 u64 *last_pte_updated;
362 struct fpu guest_fpu;
365 struct kvm_pio_request pio;
368 u8 event_exit_inst_len;
370 struct kvm_queued_exception {
378 struct kvm_queued_interrupt {
384 int halt_request; /* real mode on Intel only */
387 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
388 /* emulate context */
390 struct x86_emulate_ctxt emulate_ctxt;
391 bool emulate_regs_need_sync_to_vcpu;
392 bool emulate_regs_need_sync_from_vcpu;
395 struct pvclock_vcpu_time_info hv_clock;
396 unsigned int hw_tsc_khz;
397 struct gfn_to_hva_cache pv_time;
398 bool pv_time_enabled;
404 struct gfn_to_hva_cache stime;
405 struct kvm_steal_time steal;
414 u32 tsc_catchup_mult;
415 s8 tsc_catchup_shift;
417 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
418 unsigned nmi_pending; /* NMI queued after currently running handler */
419 bool nmi_injected; /* Trying to inject an NMI this entry */
421 struct mtrr_state_type mtrr_state;
425 unsigned long db[KVM_NR_DB_REGS];
428 unsigned long eff_db[KVM_NR_DB_REGS];
435 /* Cache MMIO info */
441 /* used for guest single stepping over the given code position */
442 unsigned long singlestep_rip;
444 /* fields used by HYPER-V emulation */
447 cpumask_var_t wbinvd_dirty_mask;
451 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
452 struct gfn_to_hva_cache data;
460 unsigned int n_used_mmu_pages;
461 unsigned int n_requested_mmu_pages;
462 unsigned int n_max_mmu_pages;
463 unsigned int indirect_shadow_pages;
464 atomic_t invlpg_counter;
465 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
467 * Hash table of struct kvm_mmu_page.
469 struct list_head active_mmu_pages;
470 struct list_head assigned_dev_head;
471 struct iommu_domain *iommu_domain;
473 struct kvm_pic *vpic;
474 struct kvm_ioapic *vioapic;
475 struct kvm_pit *vpit;
476 atomic_t vapics_in_nmi_mode;
478 unsigned int tss_addr;
479 struct page *apic_access_page;
483 struct page *ept_identity_pagetable;
484 bool ept_identity_pagetable_done;
485 gpa_t ept_identity_map_addr;
487 unsigned long irq_sources_bitmap;
489 raw_spinlock_t tsc_write_lock;
494 struct kvm_xen_hvm_config xen_hvm_config;
496 /* fields used by HYPER-V emulation */
500 atomic_t reader_counter;
502 #ifdef CONFIG_KVM_MMU_AUDIT
508 u32 mmu_shadow_zapped;
516 u32 remote_tlb_flush;
520 struct kvm_vcpu_stat {
530 u32 irq_window_exits;
531 u32 nmi_window_exits;
534 u32 request_irq_exits;
536 u32 host_state_reload;
540 u32 insn_emulation_fail;
546 struct x86_instruction_info;
549 int (*cpu_has_kvm_support)(void); /* __init */
550 int (*disabled_by_bios)(void); /* __init */
551 int (*hardware_enable)(void *dummy);
552 void (*hardware_disable)(void *dummy);
553 void (*check_processor_compatibility)(void *rtn);
554 int (*hardware_setup)(void); /* __init */
555 void (*hardware_unsetup)(void); /* __exit */
556 bool (*cpu_has_accelerated_tpr)(void);
557 void (*cpuid_update)(struct kvm_vcpu *vcpu);
559 /* Create, but do not attach this VCPU */
560 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
561 void (*vcpu_free)(struct kvm_vcpu *vcpu);
562 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
564 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
565 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
566 void (*vcpu_put)(struct kvm_vcpu *vcpu);
568 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
569 struct kvm_guest_debug *dbg);
570 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
571 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
572 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
573 void (*get_segment)(struct kvm_vcpu *vcpu,
574 struct kvm_segment *var, int seg);
575 int (*get_cpl)(struct kvm_vcpu *vcpu);
576 void (*set_segment)(struct kvm_vcpu *vcpu,
577 struct kvm_segment *var, int seg);
578 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
579 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
580 void (*decache_cr3)(struct kvm_vcpu *vcpu);
581 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
582 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
583 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
584 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
585 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
586 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
587 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
588 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
589 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
590 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
591 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
592 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
593 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
594 void (*fpu_activate)(struct kvm_vcpu *vcpu);
595 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
597 void (*tlb_flush)(struct kvm_vcpu *vcpu);
599 void (*run)(struct kvm_vcpu *vcpu);
600 int (*handle_exit)(struct kvm_vcpu *vcpu);
601 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
602 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
603 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
604 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
605 unsigned char *hypercall_addr);
606 void (*set_irq)(struct kvm_vcpu *vcpu);
607 void (*set_nmi)(struct kvm_vcpu *vcpu);
608 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
609 bool has_error_code, u32 error_code,
611 void (*cancel_injection)(struct kvm_vcpu *vcpu);
612 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
613 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
614 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
615 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
616 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
617 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
618 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
619 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
620 int (*get_tdp_level)(void);
621 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
622 int (*get_lpage_level)(void);
623 bool (*rdtscp_supported)(void);
624 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
626 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
628 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
630 bool (*has_wbinvd_exit)(void);
632 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz);
633 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
635 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
636 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu);
638 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
640 int (*check_intercept)(struct kvm_vcpu *vcpu,
641 struct x86_instruction_info *info,
642 enum x86_intercept_stage stage);
645 struct kvm_arch_async_pf {
652 extern struct kvm_x86_ops *kvm_x86_ops;
654 int kvm_mmu_module_init(void);
655 void kvm_mmu_module_exit(void);
657 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
658 int kvm_mmu_create(struct kvm_vcpu *vcpu);
659 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
660 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
661 u64 dirty_mask, u64 nx_mask, u64 x_mask);
663 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
664 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
665 void kvm_mmu_zap_all(struct kvm *kvm);
666 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
667 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
669 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
671 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
672 const void *val, int bytes);
673 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
674 gpa_t addr, unsigned long *ret);
675 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
677 extern bool tdp_enabled;
679 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
681 /* control of guest tsc rate supported? */
682 extern bool kvm_has_tsc_control;
683 /* minimum supported tsc_khz for guests */
684 extern u32 kvm_min_guest_tsc_khz;
685 /* maximum supported tsc_khz for guests */
686 extern u32 kvm_max_guest_tsc_khz;
688 enum emulation_result {
689 EMULATE_DONE, /* no further processing */
690 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
691 EMULATE_FAIL, /* can't emulate this instruction */
694 #define EMULTYPE_NO_DECODE (1 << 0)
695 #define EMULTYPE_TRAP_UD (1 << 1)
696 #define EMULTYPE_SKIP (1 << 2)
697 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
698 int emulation_type, void *insn, int insn_len);
700 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
703 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
706 void kvm_enable_efer_bits(u64);
707 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
708 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
710 struct x86_emulate_ctxt;
712 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
713 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
714 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
715 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
717 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
718 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
720 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
721 bool has_error_code, u32 error_code);
723 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
724 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
725 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
726 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
727 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
728 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
729 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
730 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
731 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
732 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
734 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
735 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
737 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
738 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
740 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
741 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
742 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
743 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
744 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
745 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
746 gfn_t gfn, void *data, int offset, int len,
748 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
749 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
751 int kvm_pic_set_irq(void *opaque, int irq, int level);
753 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
755 int fx_init(struct kvm_vcpu *vcpu);
757 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
758 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
759 const u8 *new, int bytes,
760 bool guest_initiated);
761 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
762 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
763 int kvm_mmu_load(struct kvm_vcpu *vcpu);
764 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
765 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
766 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
767 struct x86_exception *exception);
768 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
769 struct x86_exception *exception);
770 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
771 struct x86_exception *exception);
772 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
773 struct x86_exception *exception);
775 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
777 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
778 void *insn, int insn_len);
779 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
781 void kvm_enable_tdp(void);
782 void kvm_disable_tdp(void);
784 int complete_pio(struct kvm_vcpu *vcpu);
785 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
787 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
789 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
791 return (struct kvm_mmu_page *)page_private(page);
794 static inline u16 kvm_read_ldt(void)
797 asm("sldt %0" : "=g"(ldt));
801 static inline void kvm_load_ldt(u16 sel)
803 asm("lldt %0" : : "rm"(sel));
807 static inline unsigned long read_msr(unsigned long msr)
816 static inline u32 get_rdx_init_val(void)
818 return 0x600; /* P6 family */
821 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
823 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
826 static inline u64 get_canonical(u64 la)
828 return ((int64_t)la << 16) >> 16;
831 static inline bool is_noncanonical_address(u64 la)
834 return get_canonical(la) != la;
840 #define TSS_IOPB_BASE_OFFSET 0x66
841 #define TSS_BASE_SIZE 0x68
842 #define TSS_IOPB_SIZE (65536 / 8)
843 #define TSS_REDIRECTION_SIZE (256 / 8)
844 #define RMODE_TSS_SIZE \
845 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
848 TASK_SWITCH_CALL = 0,
849 TASK_SWITCH_IRET = 1,
851 TASK_SWITCH_GATE = 3,
854 #define HF_GIF_MASK (1 << 0)
855 #define HF_HIF_MASK (1 << 1)
856 #define HF_VINTR_MASK (1 << 2)
857 #define HF_NMI_MASK (1 << 3)
858 #define HF_IRET_MASK (1 << 4)
859 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
862 * Hardware virtualization extension instructions may fault if a
863 * reboot turns off virtualization while processes are running.
864 * Trap the fault and ignore the instruction if that happens.
866 asmlinkage void kvm_spurious_fault(void);
867 extern bool kvm_rebooting;
869 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
870 "666: " insn "\n\t" \
872 ".pushsection .fixup, \"ax\" \n" \
874 cleanup_insn "\n\t" \
875 "cmpb $0, kvm_rebooting \n\t" \
877 __ASM_SIZE(push) " $666b \n\t" \
878 "call kvm_spurious_fault \n\t" \
880 ".pushsection __ex_table, \"a\" \n\t" \
881 _ASM_PTR " 666b, 667b \n\t" \
884 #define __kvm_handle_fault_on_reboot(insn) \
885 ____kvm_handle_fault_on_reboot(insn, "")
887 #define KVM_ARCH_WANT_MMU_NOTIFIER
888 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
889 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
890 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
891 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
892 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
893 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
894 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
895 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
897 void kvm_define_shared_msr(unsigned index, u32 msr);
898 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
900 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
902 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
903 struct kvm_async_pf *work);
904 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
905 struct kvm_async_pf *work);
906 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
907 struct kvm_async_pf *work);
908 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
909 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
911 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
913 #endif /* _ASM_X86_KVM_HOST_H */