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>
19 #include <linux/irq_work.h>
21 #include <linux/kvm.h>
22 #include <linux/kvm_para.h>
23 #include <linux/kvm_types.h>
24 #include <linux/perf_event.h>
25 #include <linux/pvclock_gtod.h>
26 #include <linux/clocksource.h>
28 #include <asm/pvclock-abi.h>
31 #include <asm/msr-index.h>
34 #define KVM_MAX_VCPUS 255
35 #define KVM_SOFT_MAX_VCPUS 160
36 #define KVM_USER_MEM_SLOTS 509
37 /* memory slots that are not exposed to userspace */
38 #define KVM_PRIVATE_MEM_SLOTS 3
39 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
41 #define KVM_PIO_PAGE_OFFSET 1
42 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
44 #define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS
46 #define CR0_RESERVED_BITS \
47 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
48 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
49 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
51 #define CR3_L_MODE_RESERVED_BITS 0xFFFFFF0000000000ULL
52 #define CR3_PCID_INVD BIT_64(63)
53 #define CR4_RESERVED_BITS \
54 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
55 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
56 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
57 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \
58 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE | X86_CR4_SMAP))
60 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
64 #define INVALID_PAGE (~(hpa_t)0)
65 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
67 #define UNMAPPED_GVA (~(gpa_t)0)
69 /* KVM Hugepage definitions for x86 */
70 #define KVM_NR_PAGE_SIZES 3
71 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
72 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
73 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
74 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
75 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
77 static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level)
79 /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */
80 return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) -
81 (base_gfn >> KVM_HPAGE_GFN_SHIFT(level));
84 #define SELECTOR_TI_MASK (1 << 2)
85 #define SELECTOR_RPL_MASK 0x03
89 #define KVM_PERMILLE_MMU_PAGES 20
90 #define KVM_MIN_ALLOC_MMU_PAGES 64
91 #define KVM_MMU_HASH_SHIFT 10
92 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
93 #define KVM_MIN_FREE_MMU_PAGES 5
94 #define KVM_REFILL_PAGES 25
95 #define KVM_MAX_CPUID_ENTRIES 80
96 #define KVM_NR_FIXED_MTRR_REGION 88
97 #define KVM_NR_VAR_MTRR 8
99 #define ASYNC_PF_PER_VCPU 64
125 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
142 #include <asm/kvm_emulate.h>
144 #define KVM_NR_MEM_OBJS 40
146 #define KVM_NR_DB_REGS 4
148 #define DR6_BD (1 << 13)
149 #define DR6_BS (1 << 14)
150 #define DR6_RTM (1 << 16)
151 #define DR6_FIXED_1 0xfffe0ff0
152 #define DR6_INIT 0xffff0ff0
153 #define DR6_VOLATILE 0x0001e00f
155 #define DR7_BP_EN_MASK 0x000000ff
156 #define DR7_GE (1 << 9)
157 #define DR7_GD (1 << 13)
158 #define DR7_FIXED_1 0x00000400
159 #define DR7_VOLATILE 0xffff2bff
161 #define PFERR_PRESENT_BIT 0
162 #define PFERR_WRITE_BIT 1
163 #define PFERR_USER_BIT 2
164 #define PFERR_RSVD_BIT 3
165 #define PFERR_FETCH_BIT 4
167 #define PFERR_PRESENT_MASK (1U << PFERR_PRESENT_BIT)
168 #define PFERR_WRITE_MASK (1U << PFERR_WRITE_BIT)
169 #define PFERR_USER_MASK (1U << PFERR_USER_BIT)
170 #define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT)
171 #define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT)
173 /* apic attention bits */
174 #define KVM_APIC_CHECK_VAPIC 0
176 * The following bit is set with PV-EOI, unset on EOI.
177 * We detect PV-EOI changes by guest by comparing
178 * this bit with PV-EOI in guest memory.
179 * See the implementation in apic_update_pv_eoi.
181 #define KVM_APIC_PV_EOI_PENDING 1
184 * We don't want allocation failures within the mmu code, so we preallocate
185 * enough memory for a single page fault in a cache.
187 struct kvm_mmu_memory_cache {
189 void *objects[KVM_NR_MEM_OBJS];
193 * kvm_mmu_page_role, below, is defined as:
195 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
196 * bits 4:7 - page table level for this shadow (1-4)
197 * bits 8:9 - page table quadrant for 2-level guests
198 * bit 16 - direct mapping of virtual to physical mapping at gfn
199 * used for real mode and two-dimensional paging
200 * bits 17:19 - common access permissions for all ptes in this shadow page
202 union kvm_mmu_page_role {
208 unsigned pad_for_nice_hex_output:6;
214 unsigned smep_andnot_wp:1;
218 struct kvm_mmu_page {
219 struct list_head link;
220 struct hlist_node hash_link;
223 * The following two entries are used to key the shadow page in the
227 union kvm_mmu_page_role role;
230 /* hold the gfn of each spte inside spt */
233 int root_count; /* Currently serving as active root */
234 unsigned int unsync_children;
235 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
237 /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */
238 unsigned long mmu_valid_gen;
240 DECLARE_BITMAP(unsync_child_bitmap, 512);
244 * Used out of the mmu-lock to avoid reading spte values while an
245 * update is in progress; see the comments in __get_spte_lockless().
247 int clear_spte_count;
250 /* Number of writes since the last time traversal visited this page. */
251 int write_flooding_count;
254 struct kvm_pio_request {
262 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
263 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
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 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
275 struct x86_exception *exception);
276 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
277 struct x86_exception *exception);
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;
290 * Bitmap; bit set = permission fault
291 * Byte index: page fault error code [4:1]
292 * Bit index: pte permissions in ACC_* format
298 u64 rsvd_bits_mask[2][4];
302 * Bitmap: bit set = last pte in walk
303 * index[0:1]: level (zero-based)
310 u64 pdptrs[4]; /* pae */
323 struct perf_event *perf_event;
324 struct kvm_vcpu *vcpu;
328 unsigned nr_arch_gp_counters;
329 unsigned nr_arch_fixed_counters;
330 unsigned available_event_types;
335 u64 counter_bitmask[2];
336 u64 global_ctrl_mask;
339 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
340 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
341 struct irq_work irq_work;
346 KVM_DEBUGREG_BP_ENABLED = 1,
347 KVM_DEBUGREG_WONT_EXIT = 2,
350 struct kvm_vcpu_arch {
352 * rip and regs accesses must go through
353 * kvm_{register,rip}_{read,write} functions.
355 unsigned long regs[NR_VCPU_REGS];
360 unsigned long cr0_guest_owned_bits;
364 unsigned long cr4_guest_owned_bits;
369 struct kvm_lapic *apic; /* kernel irqchip context */
370 unsigned long apic_attention;
371 int32_t apic_arb_prio;
373 u64 ia32_misc_enable_msr;
374 bool tpr_access_reporting;
378 * Paging state of the vcpu
380 * If the vcpu runs in guest mode with two level paging this still saves
381 * the paging mode of the l1 guest. This context is always used to
387 * Paging state of an L2 guest (used for nested npt)
389 * This context will save all necessary information to walk page tables
390 * of the an L2 guest. This context is only initialized for page table
391 * walking and not for faulting since we never handle l2 page faults on
394 struct kvm_mmu nested_mmu;
397 * Pointer to the mmu context currently used for
398 * gva_to_gpa translations.
400 struct kvm_mmu *walk_mmu;
402 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
403 struct kvm_mmu_memory_cache mmu_page_cache;
404 struct kvm_mmu_memory_cache mmu_page_header_cache;
406 struct fpu guest_fpu;
408 u64 guest_supported_xcr0;
409 u32 guest_xstate_size;
411 struct kvm_pio_request pio;
414 u8 event_exit_inst_len;
416 struct kvm_queued_exception {
424 struct kvm_queued_interrupt {
430 int halt_request; /* real mode on Intel only */
433 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
434 /* emulate context */
436 struct x86_emulate_ctxt emulate_ctxt;
437 bool emulate_regs_need_sync_to_vcpu;
438 bool emulate_regs_need_sync_from_vcpu;
439 int (*complete_userspace_io)(struct kvm_vcpu *vcpu);
442 struct pvclock_vcpu_time_info hv_clock;
443 unsigned int hw_tsc_khz;
444 struct gfn_to_hva_cache pv_time;
445 bool pv_time_enabled;
446 /* set guest stopped flag in pvclock flags field */
447 bool pvclock_set_guest_stopped_request;
453 struct gfn_to_hva_cache stime;
454 struct kvm_steal_time steal;
459 u64 tsc_offset_adjustment;
462 u64 this_tsc_generation;
464 bool tsc_always_catchup;
465 s8 virtual_tsc_shift;
466 u32 virtual_tsc_mult;
468 s64 ia32_tsc_adjust_msr;
470 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
471 unsigned nmi_pending; /* NMI queued after currently running handler */
472 bool nmi_injected; /* Trying to inject an NMI this entry */
474 struct mtrr_state_type mtrr_state;
477 unsigned switch_db_regs;
478 unsigned long db[KVM_NR_DB_REGS];
481 unsigned long eff_db[KVM_NR_DB_REGS];
482 unsigned long guest_debug_dr7;
489 /* Cache MMIO info */
497 /* used for guest single stepping over the given code position */
498 unsigned long singlestep_rip;
500 /* fields used by HYPER-V emulation */
503 cpumask_var_t wbinvd_dirty_mask;
505 unsigned long last_retry_eip;
506 unsigned long last_retry_addr;
510 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
511 struct gfn_to_hva_cache data;
517 /* OSVW MSRs (AMD only) */
525 struct gfn_to_hva_cache data;
529 * Indicate whether the access faults on its page table in guest
530 * which is set when fix page fault and used to detect unhandeable
533 bool write_fault_to_shadow_pgtable;
535 /* set at EPT violation at this point */
536 unsigned long exit_qualification;
538 /* pv related host specific info */
544 struct kvm_lpage_info {
548 struct kvm_arch_memory_slot {
549 unsigned long *rmap[KVM_NR_PAGE_SIZES];
550 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
553 struct kvm_apic_map {
556 /* fields bellow are used to decode ldr values in different modes */
557 u32 cid_shift, cid_mask, lid_mask, broadcast;
558 struct kvm_lapic *phys_map[256];
559 /* first index is cluster id second is cpu id in a cluster */
560 struct kvm_lapic *logical_map[16][16];
564 unsigned int n_used_mmu_pages;
565 unsigned int n_requested_mmu_pages;
566 unsigned int n_max_mmu_pages;
567 unsigned int indirect_shadow_pages;
568 unsigned long mmu_valid_gen;
569 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
571 * Hash table of struct kvm_mmu_page.
573 struct list_head active_mmu_pages;
574 struct list_head zapped_obsolete_pages;
576 struct list_head assigned_dev_head;
577 struct iommu_domain *iommu_domain;
578 bool iommu_noncoherent;
579 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA
580 atomic_t noncoherent_dma_count;
581 struct kvm_pic *vpic;
582 struct kvm_ioapic *vioapic;
583 struct kvm_pit *vpit;
584 int vapics_in_nmi_mode;
585 struct mutex apic_map_lock;
586 struct kvm_apic_map *apic_map;
588 unsigned int tss_addr;
589 bool apic_access_page_done;
593 bool ept_identity_pagetable_done;
594 gpa_t ept_identity_map_addr;
596 unsigned long irq_sources_bitmap;
598 raw_spinlock_t tsc_write_lock;
605 u64 cur_tsc_generation;
606 int nr_vcpus_matched_tsc;
608 spinlock_t pvclock_gtod_sync_lock;
609 bool use_master_clock;
610 u64 master_kernel_ns;
611 cycle_t master_cycle_now;
612 struct delayed_work kvmclock_update_work;
613 struct delayed_work kvmclock_sync_work;
615 struct kvm_xen_hvm_config xen_hvm_config;
617 /* reads protected by irq_srcu, writes by irq_lock */
618 struct hlist_head mask_notifier_list;
620 /* fields used by HYPER-V emulation */
625 #ifdef CONFIG_KVM_MMU_AUDIT
629 bool boot_vcpu_runs_old_kvmclock;
633 u32 mmu_shadow_zapped;
641 u32 remote_tlb_flush;
645 struct kvm_vcpu_stat {
655 u32 irq_window_exits;
656 u32 nmi_window_exits;
658 u32 halt_successful_poll;
660 u32 request_irq_exits;
662 u32 host_state_reload;
666 u32 insn_emulation_fail;
672 struct x86_instruction_info;
680 struct kvm_lapic_irq {
691 int (*cpu_has_kvm_support)(void); /* __init */
692 int (*disabled_by_bios)(void); /* __init */
693 int (*hardware_enable)(void);
694 void (*hardware_disable)(void);
695 void (*check_processor_compatibility)(void *rtn);
696 int (*hardware_setup)(void); /* __init */
697 void (*hardware_unsetup)(void); /* __exit */
698 bool (*cpu_has_accelerated_tpr)(void);
699 void (*cpuid_update)(struct kvm_vcpu *vcpu);
701 /* Create, but do not attach this VCPU */
702 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
703 void (*vcpu_free)(struct kvm_vcpu *vcpu);
704 void (*vcpu_reset)(struct kvm_vcpu *vcpu);
706 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
707 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
708 void (*vcpu_put)(struct kvm_vcpu *vcpu);
710 void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu);
711 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
712 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
713 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
714 void (*get_segment)(struct kvm_vcpu *vcpu,
715 struct kvm_segment *var, int seg);
716 int (*get_cpl)(struct kvm_vcpu *vcpu);
717 void (*set_segment)(struct kvm_vcpu *vcpu,
718 struct kvm_segment *var, int seg);
719 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
720 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
721 void (*decache_cr3)(struct kvm_vcpu *vcpu);
722 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
723 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
724 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
725 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
726 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
727 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
728 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
729 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
730 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
731 u64 (*get_dr6)(struct kvm_vcpu *vcpu);
732 void (*set_dr6)(struct kvm_vcpu *vcpu, unsigned long value);
733 void (*sync_dirty_debug_regs)(struct kvm_vcpu *vcpu);
734 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
735 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
736 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
737 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
738 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
740 void (*tlb_flush)(struct kvm_vcpu *vcpu);
742 void (*run)(struct kvm_vcpu *vcpu);
743 int (*handle_exit)(struct kvm_vcpu *vcpu);
744 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
745 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
746 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu);
747 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
748 unsigned char *hypercall_addr);
749 void (*set_irq)(struct kvm_vcpu *vcpu);
750 void (*set_nmi)(struct kvm_vcpu *vcpu);
751 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
752 bool has_error_code, u32 error_code,
754 void (*cancel_injection)(struct kvm_vcpu *vcpu);
755 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
756 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
757 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
758 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
759 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
760 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
761 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
762 int (*vm_has_apicv)(struct kvm *kvm);
763 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
764 void (*hwapic_isr_update)(struct kvm *kvm, int isr);
765 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
766 void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set);
767 void (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu, hpa_t hpa);
768 void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
769 void (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
770 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
771 int (*get_tdp_level)(void);
772 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
773 int (*get_lpage_level)(void);
774 bool (*rdtscp_supported)(void);
775 bool (*invpcid_supported)(void);
776 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
778 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
780 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
782 bool (*has_wbinvd_exit)(void);
784 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
785 u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu);
786 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
788 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
789 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc);
791 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
793 int (*check_intercept)(struct kvm_vcpu *vcpu,
794 struct x86_instruction_info *info,
795 enum x86_intercept_stage stage);
796 void (*handle_external_intr)(struct kvm_vcpu *vcpu);
797 bool (*mpx_supported)(void);
798 bool (*xsaves_supported)(void);
800 int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr);
802 void (*sched_in)(struct kvm_vcpu *kvm, int cpu);
805 * Arch-specific dirty logging hooks. These hooks are only supposed to
806 * be valid if the specific arch has hardware-accelerated dirty logging
807 * mechanism. Currently only for PML on VMX.
809 * - slot_enable_log_dirty:
810 * called when enabling log dirty mode for the slot.
811 * - slot_disable_log_dirty:
812 * called when disabling log dirty mode for the slot.
813 * also called when slot is created with log dirty disabled.
815 * called before reporting dirty_bitmap to userspace.
816 * - enable_log_dirty_pt_masked:
817 * called when reenabling log dirty for the GFNs in the mask after
818 * corresponding bits are cleared in slot->dirty_bitmap.
820 void (*slot_enable_log_dirty)(struct kvm *kvm,
821 struct kvm_memory_slot *slot);
822 void (*slot_disable_log_dirty)(struct kvm *kvm,
823 struct kvm_memory_slot *slot);
824 void (*flush_log_dirty)(struct kvm *kvm);
825 void (*enable_log_dirty_pt_masked)(struct kvm *kvm,
826 struct kvm_memory_slot *slot,
827 gfn_t offset, unsigned long mask);
830 struct kvm_arch_async_pf {
837 extern struct kvm_x86_ops *kvm_x86_ops;
839 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
842 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
845 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
847 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
850 int kvm_mmu_module_init(void);
851 void kvm_mmu_module_exit(void);
853 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
854 int kvm_mmu_create(struct kvm_vcpu *vcpu);
855 void kvm_mmu_setup(struct kvm_vcpu *vcpu);
856 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
857 u64 dirty_mask, u64 nx_mask, u64 x_mask);
859 void kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
860 void kvm_mmu_slot_remove_write_access(struct kvm *kvm,
861 struct kvm_memory_slot *memslot);
862 void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm,
863 struct kvm_memory_slot *memslot);
864 void kvm_mmu_slot_largepage_remove_write_access(struct kvm *kvm,
865 struct kvm_memory_slot *memslot);
866 void kvm_mmu_slot_set_dirty(struct kvm *kvm,
867 struct kvm_memory_slot *memslot);
868 void kvm_mmu_clear_dirty_pt_masked(struct kvm *kvm,
869 struct kvm_memory_slot *slot,
870 gfn_t gfn_offset, unsigned long mask);
871 void kvm_mmu_zap_all(struct kvm *kvm);
872 void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm);
873 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
874 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
876 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
878 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
879 const void *val, int bytes);
880 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
882 struct kvm_irq_mask_notifier {
883 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
885 struct hlist_node link;
888 void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
889 struct kvm_irq_mask_notifier *kimn);
890 void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
891 struct kvm_irq_mask_notifier *kimn);
892 void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
895 extern bool tdp_enabled;
897 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
899 /* control of guest tsc rate supported? */
900 extern bool kvm_has_tsc_control;
901 /* minimum supported tsc_khz for guests */
902 extern u32 kvm_min_guest_tsc_khz;
903 /* maximum supported tsc_khz for guests */
904 extern u32 kvm_max_guest_tsc_khz;
906 enum emulation_result {
907 EMULATE_DONE, /* no further processing */
908 EMULATE_USER_EXIT, /* kvm_run ready for userspace exit */
909 EMULATE_FAIL, /* can't emulate this instruction */
912 #define EMULTYPE_NO_DECODE (1 << 0)
913 #define EMULTYPE_TRAP_UD (1 << 1)
914 #define EMULTYPE_SKIP (1 << 2)
915 #define EMULTYPE_RETRY (1 << 3)
916 #define EMULTYPE_NO_REEXECUTE (1 << 4)
917 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
918 int emulation_type, void *insn, int insn_len);
920 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
923 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
926 void kvm_enable_efer_bits(u64);
927 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer);
928 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
929 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
931 struct x86_emulate_ctxt;
933 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
934 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
935 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
936 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
938 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
939 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
940 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector);
942 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
943 int reason, bool has_error_code, u32 error_code);
945 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
946 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
947 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
948 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
949 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
950 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
951 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
952 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
953 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
954 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
956 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
957 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
959 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
960 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
961 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
963 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
964 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
965 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
966 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
967 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
968 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
969 gfn_t gfn, void *data, int offset, int len,
971 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
972 bool kvm_require_dr(struct kvm_vcpu *vcpu, int dr);
974 static inline int __kvm_irq_line_state(unsigned long *irq_state,
975 int irq_source_id, int level)
977 /* Logical OR for level trig interrupt */
979 __set_bit(irq_source_id, irq_state);
981 __clear_bit(irq_source_id, irq_state);
983 return !!(*irq_state);
986 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
987 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
989 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
991 int fx_init(struct kvm_vcpu *vcpu);
993 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
994 const u8 *new, int bytes);
995 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
996 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
997 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
998 int kvm_mmu_load(struct kvm_vcpu *vcpu);
999 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
1000 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
1001 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
1002 struct x86_exception *exception);
1003 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
1004 struct x86_exception *exception);
1005 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
1006 struct x86_exception *exception);
1007 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
1008 struct x86_exception *exception);
1009 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
1010 struct x86_exception *exception);
1012 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
1014 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
1015 void *insn, int insn_len);
1016 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
1017 void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu);
1019 void kvm_enable_tdp(void);
1020 void kvm_disable_tdp(void);
1022 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
1023 struct x86_exception *exception)
1028 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
1030 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
1032 return (struct kvm_mmu_page *)page_private(page);
1035 static inline u16 kvm_read_ldt(void)
1038 asm("sldt %0" : "=g"(ldt));
1042 static inline void kvm_load_ldt(u16 sel)
1044 asm("lldt %0" : : "rm"(sel));
1047 #ifdef CONFIG_X86_64
1048 static inline unsigned long read_msr(unsigned long msr)
1057 static inline u32 get_rdx_init_val(void)
1059 return 0x600; /* P6 family */
1062 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
1064 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
1067 static inline u64 get_canonical(u64 la)
1069 return ((int64_t)la << 16) >> 16;
1072 static inline bool is_noncanonical_address(u64 la)
1074 #ifdef CONFIG_X86_64
1075 return get_canonical(la) != la;
1081 #define TSS_IOPB_BASE_OFFSET 0x66
1082 #define TSS_BASE_SIZE 0x68
1083 #define TSS_IOPB_SIZE (65536 / 8)
1084 #define TSS_REDIRECTION_SIZE (256 / 8)
1085 #define RMODE_TSS_SIZE \
1086 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
1089 TASK_SWITCH_CALL = 0,
1090 TASK_SWITCH_IRET = 1,
1091 TASK_SWITCH_JMP = 2,
1092 TASK_SWITCH_GATE = 3,
1095 #define HF_GIF_MASK (1 << 0)
1096 #define HF_HIF_MASK (1 << 1)
1097 #define HF_VINTR_MASK (1 << 2)
1098 #define HF_NMI_MASK (1 << 3)
1099 #define HF_IRET_MASK (1 << 4)
1100 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
1103 * Hardware virtualization extension instructions may fault if a
1104 * reboot turns off virtualization while processes are running.
1105 * Trap the fault and ignore the instruction if that happens.
1107 asmlinkage void kvm_spurious_fault(void);
1109 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
1110 "666: " insn "\n\t" \
1112 ".pushsection .fixup, \"ax\" \n" \
1114 cleanup_insn "\n\t" \
1115 "cmpb $0, kvm_rebooting \n\t" \
1117 __ASM_SIZE(push) " $666b \n\t" \
1118 "call kvm_spurious_fault \n\t" \
1119 ".popsection \n\t" \
1120 _ASM_EXTABLE(666b, 667b)
1122 #define __kvm_handle_fault_on_reboot(insn) \
1123 ____kvm_handle_fault_on_reboot(insn, "")
1125 #define KVM_ARCH_WANT_MMU_NOTIFIER
1126 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
1127 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
1128 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
1129 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
1130 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
1131 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
1132 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v);
1133 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
1134 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
1135 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
1136 void kvm_vcpu_reset(struct kvm_vcpu *vcpu);
1137 void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu *vcpu);
1138 void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm,
1139 unsigned long address);
1141 void kvm_define_shared_msr(unsigned index, u32 msr);
1142 int kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
1144 unsigned long kvm_get_linear_rip(struct kvm_vcpu *vcpu);
1145 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
1147 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1148 struct kvm_async_pf *work);
1149 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1150 struct kvm_async_pf *work);
1151 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1152 struct kvm_async_pf *work);
1153 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
1154 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
1156 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
1158 int kvm_is_in_guest(void);
1160 void kvm_pmu_init(struct kvm_vcpu *vcpu);
1161 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
1162 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
1163 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
1164 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
1165 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
1166 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
1167 int kvm_pmu_check_pmc(struct kvm_vcpu *vcpu, unsigned pmc);
1168 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
1169 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
1170 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
1172 #endif /* _ASM_X86_KVM_HOST_H */