1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Kernel-based Virtual Machine driver for Linux
5 * This header defines architecture specific interfaces, x86 version
8 #ifndef _ASM_X86_KVM_HOST_H
9 #define _ASM_X86_KVM_HOST_H
11 #include <linux/types.h>
13 #include <linux/mmu_notifier.h>
14 #include <linux/tracepoint.h>
15 #include <linux/cpumask.h>
16 #include <linux/irq_work.h>
17 #include <linux/irq.h>
19 #include <linux/kvm.h>
20 #include <linux/kvm_para.h>
21 #include <linux/kvm_types.h>
22 #include <linux/perf_event.h>
23 #include <linux/pvclock_gtod.h>
24 #include <linux/clocksource.h>
25 #include <linux/irqbypass.h>
26 #include <linux/hyperv.h>
29 #include <asm/pvclock-abi.h>
32 #include <asm/msr-index.h>
34 #include <asm/kvm_page_track.h>
35 #include <asm/kvm_vcpu_regs.h>
36 #include <asm/hyperv-tlfs.h>
38 #define KVM_MAX_VCPUS 288
39 #define KVM_SOFT_MAX_VCPUS 240
40 #define KVM_MAX_VCPU_ID 1023
41 #define KVM_USER_MEM_SLOTS 509
42 /* memory slots that are not exposed to userspace */
43 #define KVM_PRIVATE_MEM_SLOTS 3
44 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
46 #define KVM_HALT_POLL_NS_DEFAULT 200000
48 #define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS
50 /* x86-specific vcpu->requests bit members */
51 #define KVM_REQ_MIGRATE_TIMER KVM_ARCH_REQ(0)
52 #define KVM_REQ_REPORT_TPR_ACCESS KVM_ARCH_REQ(1)
53 #define KVM_REQ_TRIPLE_FAULT KVM_ARCH_REQ(2)
54 #define KVM_REQ_MMU_SYNC KVM_ARCH_REQ(3)
55 #define KVM_REQ_CLOCK_UPDATE KVM_ARCH_REQ(4)
56 #define KVM_REQ_LOAD_CR3 KVM_ARCH_REQ(5)
57 #define KVM_REQ_EVENT KVM_ARCH_REQ(6)
58 #define KVM_REQ_APF_HALT KVM_ARCH_REQ(7)
59 #define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(8)
60 #define KVM_REQ_NMI KVM_ARCH_REQ(9)
61 #define KVM_REQ_PMU KVM_ARCH_REQ(10)
62 #define KVM_REQ_PMI KVM_ARCH_REQ(11)
63 #define KVM_REQ_SMI KVM_ARCH_REQ(12)
64 #define KVM_REQ_MASTERCLOCK_UPDATE KVM_ARCH_REQ(13)
65 #define KVM_REQ_MCLOCK_INPROGRESS \
66 KVM_ARCH_REQ_FLAGS(14, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
67 #define KVM_REQ_SCAN_IOAPIC \
68 KVM_ARCH_REQ_FLAGS(15, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
69 #define KVM_REQ_GLOBAL_CLOCK_UPDATE KVM_ARCH_REQ(16)
70 #define KVM_REQ_APIC_PAGE_RELOAD \
71 KVM_ARCH_REQ_FLAGS(17, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
72 #define KVM_REQ_HV_CRASH KVM_ARCH_REQ(18)
73 #define KVM_REQ_IOAPIC_EOI_EXIT KVM_ARCH_REQ(19)
74 #define KVM_REQ_HV_RESET KVM_ARCH_REQ(20)
75 #define KVM_REQ_HV_EXIT KVM_ARCH_REQ(21)
76 #define KVM_REQ_HV_STIMER KVM_ARCH_REQ(22)
77 #define KVM_REQ_LOAD_EOI_EXITMAP KVM_ARCH_REQ(23)
78 #define KVM_REQ_GET_VMCS12_PAGES KVM_ARCH_REQ(24)
80 #define CR0_RESERVED_BITS \
81 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
82 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
83 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
85 #define CR4_RESERVED_BITS \
86 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
87 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
88 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
89 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \
90 | X86_CR4_OSXMMEXCPT | X86_CR4_LA57 | X86_CR4_VMXE \
91 | X86_CR4_SMAP | X86_CR4_PKE | X86_CR4_UMIP))
93 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
97 #define INVALID_PAGE (~(hpa_t)0)
98 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
100 #define UNMAPPED_GVA (~(gpa_t)0)
102 /* KVM Hugepage definitions for x86 */
104 PT_PAGE_TABLE_LEVEL = 1,
105 PT_DIRECTORY_LEVEL = 2,
107 /* set max level to the biggest one */
108 PT_MAX_HUGEPAGE_LEVEL = PT_PDPE_LEVEL,
110 #define KVM_NR_PAGE_SIZES (PT_MAX_HUGEPAGE_LEVEL - \
111 PT_PAGE_TABLE_LEVEL + 1)
112 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
113 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
114 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
115 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
116 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
118 static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level)
120 /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */
121 return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) -
122 (base_gfn >> KVM_HPAGE_GFN_SHIFT(level));
125 #define KVM_PERMILLE_MMU_PAGES 20
126 #define KVM_MIN_ALLOC_MMU_PAGES 64UL
127 #define KVM_MMU_HASH_SHIFT 12
128 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
129 #define KVM_MIN_FREE_MMU_PAGES 5
130 #define KVM_REFILL_PAGES 25
131 #define KVM_MAX_CPUID_ENTRIES 80
132 #define KVM_NR_FIXED_MTRR_REGION 88
133 #define KVM_NR_VAR_MTRR 8
135 #define ASYNC_PF_PER_VCPU 64
138 VCPU_REGS_RAX = __VCPU_REGS_RAX,
139 VCPU_REGS_RCX = __VCPU_REGS_RCX,
140 VCPU_REGS_RDX = __VCPU_REGS_RDX,
141 VCPU_REGS_RBX = __VCPU_REGS_RBX,
142 VCPU_REGS_RSP = __VCPU_REGS_RSP,
143 VCPU_REGS_RBP = __VCPU_REGS_RBP,
144 VCPU_REGS_RSI = __VCPU_REGS_RSI,
145 VCPU_REGS_RDI = __VCPU_REGS_RDI,
147 VCPU_REGS_R8 = __VCPU_REGS_R8,
148 VCPU_REGS_R9 = __VCPU_REGS_R9,
149 VCPU_REGS_R10 = __VCPU_REGS_R10,
150 VCPU_REGS_R11 = __VCPU_REGS_R11,
151 VCPU_REGS_R12 = __VCPU_REGS_R12,
152 VCPU_REGS_R13 = __VCPU_REGS_R13,
153 VCPU_REGS_R14 = __VCPU_REGS_R14,
154 VCPU_REGS_R15 = __VCPU_REGS_R15,
161 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
178 #include <asm/kvm_emulate.h>
180 #define KVM_NR_MEM_OBJS 40
182 #define KVM_NR_DB_REGS 4
184 #define DR6_BD (1 << 13)
185 #define DR6_BS (1 << 14)
186 #define DR6_BT (1 << 15)
187 #define DR6_RTM (1 << 16)
188 #define DR6_FIXED_1 0xfffe0ff0
189 #define DR6_INIT 0xffff0ff0
190 #define DR6_VOLATILE 0x0001e00f
192 #define DR7_BP_EN_MASK 0x000000ff
193 #define DR7_GE (1 << 9)
194 #define DR7_GD (1 << 13)
195 #define DR7_FIXED_1 0x00000400
196 #define DR7_VOLATILE 0xffff2bff
198 #define PFERR_PRESENT_BIT 0
199 #define PFERR_WRITE_BIT 1
200 #define PFERR_USER_BIT 2
201 #define PFERR_RSVD_BIT 3
202 #define PFERR_FETCH_BIT 4
203 #define PFERR_PK_BIT 5
204 #define PFERR_GUEST_FINAL_BIT 32
205 #define PFERR_GUEST_PAGE_BIT 33
207 #define PFERR_PRESENT_MASK (1U << PFERR_PRESENT_BIT)
208 #define PFERR_WRITE_MASK (1U << PFERR_WRITE_BIT)
209 #define PFERR_USER_MASK (1U << PFERR_USER_BIT)
210 #define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT)
211 #define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT)
212 #define PFERR_PK_MASK (1U << PFERR_PK_BIT)
213 #define PFERR_GUEST_FINAL_MASK (1ULL << PFERR_GUEST_FINAL_BIT)
214 #define PFERR_GUEST_PAGE_MASK (1ULL << PFERR_GUEST_PAGE_BIT)
216 #define PFERR_NESTED_GUEST_PAGE (PFERR_GUEST_PAGE_MASK | \
221 * The mask used to denote special SPTEs, which can be either MMIO SPTEs or
222 * Access Tracking SPTEs. We use bit 62 instead of bit 63 to avoid conflicting
223 * with the SVE bit in EPT PTEs.
225 #define SPTE_SPECIAL_MASK (1ULL << 62)
227 /* apic attention bits */
228 #define KVM_APIC_CHECK_VAPIC 0
230 * The following bit is set with PV-EOI, unset on EOI.
231 * We detect PV-EOI changes by guest by comparing
232 * this bit with PV-EOI in guest memory.
233 * See the implementation in apic_update_pv_eoi.
235 #define KVM_APIC_PV_EOI_PENDING 1
237 struct kvm_kernel_irq_routing_entry;
240 * We don't want allocation failures within the mmu code, so we preallocate
241 * enough memory for a single page fault in a cache.
243 struct kvm_mmu_memory_cache {
245 void *objects[KVM_NR_MEM_OBJS];
249 * the pages used as guest page table on soft mmu are tracked by
250 * kvm_memory_slot.arch.gfn_track which is 16 bits, so the role bits used
251 * by indirect shadow page can not be more than 15 bits.
253 * Currently, we used 14 bits that are @level, @gpte_is_8_bytes, @quadrant, @access,
254 * @nxe, @cr0_wp, @smep_andnot_wp and @smap_andnot_wp.
256 union kvm_mmu_page_role {
260 unsigned gpte_is_8_bytes:1;
267 unsigned smep_andnot_wp:1;
268 unsigned smap_andnot_wp:1;
269 unsigned ad_disabled:1;
270 unsigned guest_mode:1;
274 * This is left at the top of the word so that
275 * kvm_memslots_for_spte_role can extract it with a
276 * simple shift. While there is room, give it a whole
277 * byte so it is also faster to load it from memory.
283 union kvm_mmu_extended_role {
285 * This structure complements kvm_mmu_page_role caching everything needed for
286 * MMU configuration. If nothing in both these structures changed, MMU
287 * re-configuration can be skipped. @valid bit is set on first usage so we don't
288 * treat all-zero structure as valid data.
292 unsigned int valid:1;
293 unsigned int execonly:1;
294 unsigned int cr0_pg:1;
295 unsigned int cr4_pae:1;
296 unsigned int cr4_pse:1;
297 unsigned int cr4_pke:1;
298 unsigned int cr4_smap:1;
299 unsigned int cr4_smep:1;
300 unsigned int cr4_la57:1;
301 unsigned int maxphyaddr:6;
308 union kvm_mmu_page_role base;
309 union kvm_mmu_extended_role ext;
313 struct kvm_rmap_head {
317 struct kvm_mmu_page {
318 struct list_head link;
319 struct hlist_node hash_link;
324 * The following two entries are used to key the shadow page in the
327 union kvm_mmu_page_role role;
331 /* hold the gfn of each spte inside spt */
333 int root_count; /* Currently serving as active root */
334 unsigned int unsync_children;
335 struct kvm_rmap_head parent_ptes; /* rmap pointers to parent sptes */
336 DECLARE_BITMAP(unsync_child_bitmap, 512);
340 * Used out of the mmu-lock to avoid reading spte values while an
341 * update is in progress; see the comments in __get_spte_lockless().
343 int clear_spte_count;
346 /* Number of writes since the last time traversal visited this page. */
347 atomic_t write_flooding_count;
350 struct kvm_pio_request {
351 unsigned long linear_rip;
358 #define PT64_ROOT_MAX_LEVEL 5
360 struct rsvd_bits_validate {
361 u64 rsvd_bits_mask[2][PT64_ROOT_MAX_LEVEL];
365 struct kvm_mmu_root_info {
370 #define KVM_MMU_ROOT_INFO_INVALID \
371 ((struct kvm_mmu_root_info) { .cr3 = INVALID_PAGE, .hpa = INVALID_PAGE })
373 #define KVM_MMU_NUM_PREV_ROOTS 3
376 * x86 supports 4 paging modes (5-level 64-bit, 4-level 64-bit, 3-level 32-bit,
377 * and 2-level 32-bit). The kvm_mmu structure abstracts the details of the
381 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
382 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
383 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
384 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
386 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
387 struct x86_exception *fault);
388 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
389 struct x86_exception *exception);
390 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
391 struct x86_exception *exception);
392 int (*sync_page)(struct kvm_vcpu *vcpu,
393 struct kvm_mmu_page *sp);
394 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root_hpa);
395 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
396 u64 *spte, const void *pte);
399 union kvm_mmu_role mmu_role;
401 u8 shadow_root_level;
404 struct kvm_mmu_root_info prev_roots[KVM_MMU_NUM_PREV_ROOTS];
407 * Bitmap; bit set = permission fault
408 * Byte index: page fault error code [4:1]
409 * Bit index: pte permissions in ACC_* format
414 * The pkru_mask indicates if protection key checks are needed. It
415 * consists of 16 domains indexed by page fault error code bits [4:1],
416 * with PFEC.RSVD replaced by ACC_USER_MASK from the page tables.
417 * Each domain has 2 bits which are ANDed with AD and WD from PKRU.
425 * check zero bits on shadow page table entries, these
426 * bits include not only hardware reserved bits but also
427 * the bits spte never used.
429 struct rsvd_bits_validate shadow_zero_check;
431 struct rsvd_bits_validate guest_rsvd_check;
433 /* Can have large pages at levels 2..last_nonleaf_level-1. */
434 u8 last_nonleaf_level;
438 u64 pdptrs[4]; /* pae */
441 struct kvm_tlb_range {
456 struct perf_event *perf_event;
457 struct kvm_vcpu *vcpu;
461 unsigned nr_arch_gp_counters;
462 unsigned nr_arch_fixed_counters;
463 unsigned available_event_types;
468 u64 counter_bitmask[2];
469 u64 global_ctrl_mask;
470 u64 global_ovf_ctrl_mask;
473 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
474 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
475 struct irq_work irq_work;
482 KVM_DEBUGREG_BP_ENABLED = 1,
483 KVM_DEBUGREG_WONT_EXIT = 2,
484 KVM_DEBUGREG_RELOAD = 4,
487 struct kvm_mtrr_range {
490 struct list_head node;
494 struct kvm_mtrr_range var_ranges[KVM_NR_VAR_MTRR];
495 mtrr_type fixed_ranges[KVM_NR_FIXED_MTRR_REGION];
498 struct list_head head;
501 /* Hyper-V SynIC timer */
502 struct kvm_vcpu_hv_stimer {
503 struct hrtimer timer;
505 union hv_stimer_config config;
508 struct hv_message msg;
512 /* Hyper-V synthetic interrupt controller (SynIC)*/
513 struct kvm_vcpu_hv_synic {
518 atomic64_t sint[HV_SYNIC_SINT_COUNT];
519 atomic_t sint_to_gsi[HV_SYNIC_SINT_COUNT];
520 DECLARE_BITMAP(auto_eoi_bitmap, 256);
521 DECLARE_BITMAP(vec_bitmap, 256);
523 bool dont_zero_synic_pages;
526 /* Hyper-V per vcpu emulation context */
531 struct kvm_vcpu_hv_synic synic;
532 struct kvm_hyperv_exit exit;
533 struct kvm_vcpu_hv_stimer stimer[HV_SYNIC_STIMER_COUNT];
534 DECLARE_BITMAP(stimer_pending_bitmap, HV_SYNIC_STIMER_COUNT);
538 struct kvm_vcpu_arch {
540 * rip and regs accesses must go through
541 * kvm_{register,rip}_{read,write} functions.
543 unsigned long regs[NR_VCPU_REGS];
548 unsigned long cr0_guest_owned_bits;
552 unsigned long cr4_guest_owned_bits;
558 struct kvm_lapic *apic; /* kernel irqchip context */
560 bool load_eoi_exitmap_pending;
561 DECLARE_BITMAP(ioapic_handled_vectors, 256);
562 unsigned long apic_attention;
563 int32_t apic_arb_prio;
565 u64 ia32_misc_enable_msr;
568 bool tpr_access_reporting;
570 u64 microcode_version;
571 u64 arch_capabilities;
574 * Paging state of the vcpu
576 * If the vcpu runs in guest mode with two level paging this still saves
577 * the paging mode of the l1 guest. This context is always used to
582 /* Non-nested MMU for L1 */
583 struct kvm_mmu root_mmu;
585 /* L1 MMU when running nested */
586 struct kvm_mmu guest_mmu;
589 * Paging state of an L2 guest (used for nested npt)
591 * This context will save all necessary information to walk page tables
592 * of the an L2 guest. This context is only initialized for page table
593 * walking and not for faulting since we never handle l2 page faults on
596 struct kvm_mmu nested_mmu;
599 * Pointer to the mmu context currently used for
600 * gva_to_gpa translations.
602 struct kvm_mmu *walk_mmu;
604 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
605 struct kvm_mmu_memory_cache mmu_page_cache;
606 struct kvm_mmu_memory_cache mmu_page_header_cache;
609 * QEMU userspace and the guest each have their own FPU state.
610 * In vcpu_run, we switch between the user and guest FPU contexts.
611 * While running a VCPU, the VCPU thread will have the guest FPU
614 * Note that while the PKRU state lives inside the fpu registers,
615 * it is switched out separately at VMENTER and VMEXIT time. The
616 * "guest_fpu" state here contains the guest FPU context, with the
619 struct fpu *user_fpu;
620 struct fpu *guest_fpu;
623 u64 guest_supported_xcr0;
624 u32 guest_xstate_size;
626 struct kvm_pio_request pio;
629 u8 event_exit_inst_len;
631 struct kvm_queued_exception {
637 unsigned long payload;
642 struct kvm_queued_interrupt {
648 int halt_request; /* real mode on Intel only */
651 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
655 /* emulate context */
657 struct x86_emulate_ctxt emulate_ctxt;
658 bool emulate_regs_need_sync_to_vcpu;
659 bool emulate_regs_need_sync_from_vcpu;
660 int (*complete_userspace_io)(struct kvm_vcpu *vcpu);
663 struct pvclock_vcpu_time_info hv_clock;
664 unsigned int hw_tsc_khz;
665 struct gfn_to_hva_cache pv_time;
666 bool pv_time_enabled;
667 /* set guest stopped flag in pvclock flags field */
668 bool pvclock_set_guest_stopped_request;
673 struct gfn_to_hva_cache stime;
674 struct kvm_steal_time steal;
680 u64 tsc_offset_adjustment;
683 u64 this_tsc_generation;
685 bool tsc_always_catchup;
686 s8 virtual_tsc_shift;
687 u32 virtual_tsc_mult;
689 s64 ia32_tsc_adjust_msr;
690 u64 msr_ia32_power_ctl;
691 u64 tsc_scaling_ratio;
693 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
694 unsigned nmi_pending; /* NMI queued after currently running handler */
695 bool nmi_injected; /* Trying to inject an NMI this entry */
696 bool smi_pending; /* SMI queued after currently running handler */
698 struct kvm_mtrr mtrr_state;
701 unsigned switch_db_regs;
702 unsigned long db[KVM_NR_DB_REGS];
705 unsigned long eff_db[KVM_NR_DB_REGS];
706 unsigned long guest_debug_dr7;
707 u64 msr_platform_info;
708 u64 msr_misc_features_enables;
716 /* Cache MMIO info */
724 /* used for guest single stepping over the given code position */
725 unsigned long singlestep_rip;
727 struct kvm_vcpu_hv hyperv;
729 cpumask_var_t wbinvd_dirty_mask;
731 unsigned long last_retry_eip;
732 unsigned long last_retry_addr;
736 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
737 struct gfn_to_hva_cache data;
742 unsigned long nested_apf_token;
743 bool delivery_as_pf_vmexit;
746 /* OSVW MSRs (AMD only) */
754 struct gfn_to_hva_cache data;
757 u64 msr_kvm_poll_control;
760 * Indicate whether the access faults on its page table in guest
761 * which is set when fix page fault and used to detect unhandeable
764 bool write_fault_to_shadow_pgtable;
766 /* set at EPT violation at this point */
767 unsigned long exit_qualification;
769 /* pv related host specific info */
774 int pending_ioapic_eoi;
775 int pending_external_vector;
781 /* be preempted when it's in kernel-mode(cpl=0) */
782 bool preempted_in_kernel;
784 /* Flush the L1 Data cache for L1TF mitigation on VMENTER */
787 /* AMD MSRC001_0015 Hardware Configuration */
791 struct kvm_lpage_info {
795 struct kvm_arch_memory_slot {
796 struct kvm_rmap_head *rmap[KVM_NR_PAGE_SIZES];
797 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
798 unsigned short *gfn_track[KVM_PAGE_TRACK_MAX];
802 * We use as the mode the number of bits allocated in the LDR for the
803 * logical processor ID. It happens that these are all powers of two.
804 * This makes it is very easy to detect cases where the APICs are
805 * configured for multiple modes; in that case, we cannot use the map and
806 * hence cannot use kvm_irq_delivery_to_apic_fast either.
808 #define KVM_APIC_MODE_XAPIC_CLUSTER 4
809 #define KVM_APIC_MODE_XAPIC_FLAT 8
810 #define KVM_APIC_MODE_X2APIC 16
812 struct kvm_apic_map {
817 struct kvm_lapic *xapic_flat_map[8];
818 struct kvm_lapic *xapic_cluster_map[16][4];
820 struct kvm_lapic *phys_map[];
823 /* Hyper-V emulation context */
825 struct mutex hv_lock;
830 /* Hyper-v based guest crash (NT kernel bugcheck) parameters */
831 u64 hv_crash_param[HV_X64_MSR_CRASH_PARAMS];
834 HV_REFERENCE_TSC_PAGE tsc_ref;
836 struct idr conn_to_evt;
838 u64 hv_reenlightenment_control;
839 u64 hv_tsc_emulation_control;
840 u64 hv_tsc_emulation_status;
842 /* How many vCPUs have VP index != vCPU index */
843 atomic_t num_mismatched_vp_indexes;
846 enum kvm_irqchip_mode {
848 KVM_IRQCHIP_KERNEL, /* created with KVM_CREATE_IRQCHIP */
849 KVM_IRQCHIP_SPLIT, /* created with KVM_CAP_SPLIT_IRQCHIP */
853 unsigned long n_used_mmu_pages;
854 unsigned long n_requested_mmu_pages;
855 unsigned long n_max_mmu_pages;
856 unsigned int indirect_shadow_pages;
857 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
859 * Hash table of struct kvm_mmu_page.
861 struct list_head active_mmu_pages;
862 struct kvm_page_track_notifier_node mmu_sp_tracker;
863 struct kvm_page_track_notifier_head track_notifier_head;
865 struct list_head assigned_dev_head;
866 struct iommu_domain *iommu_domain;
867 bool iommu_noncoherent;
868 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA
869 atomic_t noncoherent_dma_count;
870 #define __KVM_HAVE_ARCH_ASSIGNED_DEVICE
871 atomic_t assigned_device_count;
872 struct kvm_pic *vpic;
873 struct kvm_ioapic *vioapic;
874 struct kvm_pit *vpit;
875 atomic_t vapics_in_nmi_mode;
876 struct mutex apic_map_lock;
877 struct kvm_apic_map *apic_map;
879 bool apic_access_page_done;
886 bool cstate_in_guest;
888 unsigned long irq_sources_bitmap;
890 raw_spinlock_t tsc_write_lock;
897 u64 cur_tsc_generation;
898 int nr_vcpus_matched_tsc;
900 spinlock_t pvclock_gtod_sync_lock;
901 bool use_master_clock;
902 u64 master_kernel_ns;
903 u64 master_cycle_now;
904 struct delayed_work kvmclock_update_work;
905 struct delayed_work kvmclock_sync_work;
907 struct kvm_xen_hvm_config xen_hvm_config;
909 /* reads protected by irq_srcu, writes by irq_lock */
910 struct hlist_head mask_notifier_list;
912 struct kvm_hv hyperv;
914 #ifdef CONFIG_KVM_MMU_AUDIT
918 bool backwards_tsc_observed;
919 bool boot_vcpu_runs_old_kvmclock;
924 enum kvm_irqchip_mode irqchip_mode;
925 u8 nr_reserved_ioapic_pins;
927 bool disabled_lapic_found;
930 bool x2apic_broadcast_quirk_disabled;
932 bool guest_can_read_msr_platform_info;
933 bool exception_payload_enabled;
935 struct kvm_pmu_event_filter *pmu_event_filter;
939 ulong mmu_shadow_zapped;
941 ulong mmu_pte_updated;
942 ulong mmu_pde_zapped;
945 ulong mmu_cache_miss;
947 ulong remote_tlb_flush;
949 ulong max_mmu_page_hash_collisions;
952 struct kvm_vcpu_stat {
962 u64 irq_window_exits;
963 u64 nmi_window_exits;
966 u64 halt_successful_poll;
967 u64 halt_attempted_poll;
968 u64 halt_poll_invalid;
970 u64 request_irq_exits;
972 u64 host_state_reload;
975 u64 insn_emulation_fail;
982 struct x86_instruction_info;
990 struct kvm_lapic_irq {
1001 struct kvm_x86_ops {
1002 int (*cpu_has_kvm_support)(void); /* __init */
1003 int (*disabled_by_bios)(void); /* __init */
1004 int (*hardware_enable)(void);
1005 void (*hardware_disable)(void);
1006 int (*check_processor_compatibility)(void);/* __init */
1007 int (*hardware_setup)(void); /* __init */
1008 void (*hardware_unsetup)(void); /* __exit */
1009 bool (*cpu_has_accelerated_tpr)(void);
1010 bool (*has_emulated_msr)(int index);
1011 void (*cpuid_update)(struct kvm_vcpu *vcpu);
1013 struct kvm *(*vm_alloc)(void);
1014 void (*vm_free)(struct kvm *);
1015 int (*vm_init)(struct kvm *kvm);
1016 void (*vm_destroy)(struct kvm *kvm);
1018 /* Create, but do not attach this VCPU */
1019 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
1020 void (*vcpu_free)(struct kvm_vcpu *vcpu);
1021 void (*vcpu_reset)(struct kvm_vcpu *vcpu, bool init_event);
1023 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
1024 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
1025 void (*vcpu_put)(struct kvm_vcpu *vcpu);
1027 void (*update_bp_intercept)(struct kvm_vcpu *vcpu);
1028 int (*get_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
1029 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
1030 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
1031 void (*get_segment)(struct kvm_vcpu *vcpu,
1032 struct kvm_segment *var, int seg);
1033 int (*get_cpl)(struct kvm_vcpu *vcpu);
1034 void (*set_segment)(struct kvm_vcpu *vcpu,
1035 struct kvm_segment *var, int seg);
1036 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
1037 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
1038 void (*decache_cr3)(struct kvm_vcpu *vcpu);
1039 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
1040 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
1041 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
1042 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
1043 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
1044 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
1045 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
1046 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
1047 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
1048 u64 (*get_dr6)(struct kvm_vcpu *vcpu);
1049 void (*set_dr6)(struct kvm_vcpu *vcpu, unsigned long value);
1050 void (*sync_dirty_debug_regs)(struct kvm_vcpu *vcpu);
1051 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
1052 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
1053 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
1054 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
1056 void (*tlb_flush)(struct kvm_vcpu *vcpu, bool invalidate_gpa);
1057 int (*tlb_remote_flush)(struct kvm *kvm);
1058 int (*tlb_remote_flush_with_range)(struct kvm *kvm,
1059 struct kvm_tlb_range *range);
1062 * Flush any TLB entries associated with the given GVA.
1063 * Does not need to flush GPA->HPA mappings.
1064 * Can potentially get non-canonical addresses through INVLPGs, which
1065 * the implementation may choose to ignore if appropriate.
1067 void (*tlb_flush_gva)(struct kvm_vcpu *vcpu, gva_t addr);
1069 void (*run)(struct kvm_vcpu *vcpu);
1070 int (*handle_exit)(struct kvm_vcpu *vcpu);
1071 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
1072 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
1073 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu);
1074 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
1075 unsigned char *hypercall_addr);
1076 void (*set_irq)(struct kvm_vcpu *vcpu);
1077 void (*set_nmi)(struct kvm_vcpu *vcpu);
1078 void (*queue_exception)(struct kvm_vcpu *vcpu);
1079 void (*cancel_injection)(struct kvm_vcpu *vcpu);
1080 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
1081 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
1082 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
1083 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
1084 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
1085 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
1086 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
1087 bool (*get_enable_apicv)(struct kvm_vcpu *vcpu);
1088 void (*refresh_apicv_exec_ctrl)(struct kvm_vcpu *vcpu);
1089 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
1090 void (*hwapic_isr_update)(struct kvm_vcpu *vcpu, int isr);
1091 bool (*guest_apic_has_interrupt)(struct kvm_vcpu *vcpu);
1092 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
1093 void (*set_virtual_apic_mode)(struct kvm_vcpu *vcpu);
1094 void (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu, hpa_t hpa);
1095 void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
1096 int (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
1097 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
1098 int (*set_identity_map_addr)(struct kvm *kvm, u64 ident_addr);
1099 int (*get_tdp_level)(struct kvm_vcpu *vcpu);
1100 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
1101 int (*get_lpage_level)(void);
1102 bool (*rdtscp_supported)(void);
1103 bool (*invpcid_supported)(void);
1105 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
1107 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
1109 bool (*has_wbinvd_exit)(void);
1111 u64 (*read_l1_tsc_offset)(struct kvm_vcpu *vcpu);
1112 /* Returns actual tsc_offset set in active VMCS */
1113 u64 (*write_l1_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
1115 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
1117 int (*check_intercept)(struct kvm_vcpu *vcpu,
1118 struct x86_instruction_info *info,
1119 enum x86_intercept_stage stage);
1120 void (*handle_exit_irqoff)(struct kvm_vcpu *vcpu);
1121 bool (*mpx_supported)(void);
1122 bool (*xsaves_supported)(void);
1123 bool (*umip_emulated)(void);
1124 bool (*pt_supported)(void);
1126 int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr);
1127 void (*request_immediate_exit)(struct kvm_vcpu *vcpu);
1129 void (*sched_in)(struct kvm_vcpu *kvm, int cpu);
1132 * Arch-specific dirty logging hooks. These hooks are only supposed to
1133 * be valid if the specific arch has hardware-accelerated dirty logging
1134 * mechanism. Currently only for PML on VMX.
1136 * - slot_enable_log_dirty:
1137 * called when enabling log dirty mode for the slot.
1138 * - slot_disable_log_dirty:
1139 * called when disabling log dirty mode for the slot.
1140 * also called when slot is created with log dirty disabled.
1141 * - flush_log_dirty:
1142 * called before reporting dirty_bitmap to userspace.
1143 * - enable_log_dirty_pt_masked:
1144 * called when reenabling log dirty for the GFNs in the mask after
1145 * corresponding bits are cleared in slot->dirty_bitmap.
1147 void (*slot_enable_log_dirty)(struct kvm *kvm,
1148 struct kvm_memory_slot *slot);
1149 void (*slot_disable_log_dirty)(struct kvm *kvm,
1150 struct kvm_memory_slot *slot);
1151 void (*flush_log_dirty)(struct kvm *kvm);
1152 void (*enable_log_dirty_pt_masked)(struct kvm *kvm,
1153 struct kvm_memory_slot *slot,
1154 gfn_t offset, unsigned long mask);
1155 int (*write_log_dirty)(struct kvm_vcpu *vcpu);
1157 /* pmu operations of sub-arch */
1158 const struct kvm_pmu_ops *pmu_ops;
1161 * Architecture specific hooks for vCPU blocking due to
1163 * Returns for .pre_block():
1164 * - 0 means continue to block the vCPU.
1165 * - 1 means we cannot block the vCPU since some event
1166 * happens during this period, such as, 'ON' bit in
1167 * posted-interrupts descriptor is set.
1169 int (*pre_block)(struct kvm_vcpu *vcpu);
1170 void (*post_block)(struct kvm_vcpu *vcpu);
1172 void (*vcpu_blocking)(struct kvm_vcpu *vcpu);
1173 void (*vcpu_unblocking)(struct kvm_vcpu *vcpu);
1175 int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq,
1176 uint32_t guest_irq, bool set);
1177 void (*apicv_post_state_restore)(struct kvm_vcpu *vcpu);
1179 int (*set_hv_timer)(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc,
1181 void (*cancel_hv_timer)(struct kvm_vcpu *vcpu);
1183 void (*setup_mce)(struct kvm_vcpu *vcpu);
1185 int (*get_nested_state)(struct kvm_vcpu *vcpu,
1186 struct kvm_nested_state __user *user_kvm_nested_state,
1187 unsigned user_data_size);
1188 int (*set_nested_state)(struct kvm_vcpu *vcpu,
1189 struct kvm_nested_state __user *user_kvm_nested_state,
1190 struct kvm_nested_state *kvm_state);
1191 void (*get_vmcs12_pages)(struct kvm_vcpu *vcpu);
1193 int (*smi_allowed)(struct kvm_vcpu *vcpu);
1194 int (*pre_enter_smm)(struct kvm_vcpu *vcpu, char *smstate);
1195 int (*pre_leave_smm)(struct kvm_vcpu *vcpu, const char *smstate);
1196 int (*enable_smi_window)(struct kvm_vcpu *vcpu);
1198 int (*mem_enc_op)(struct kvm *kvm, void __user *argp);
1199 int (*mem_enc_reg_region)(struct kvm *kvm, struct kvm_enc_region *argp);
1200 int (*mem_enc_unreg_region)(struct kvm *kvm, struct kvm_enc_region *argp);
1202 int (*get_msr_feature)(struct kvm_msr_entry *entry);
1204 int (*nested_enable_evmcs)(struct kvm_vcpu *vcpu,
1205 uint16_t *vmcs_version);
1206 uint16_t (*nested_get_evmcs_version)(struct kvm_vcpu *vcpu);
1208 bool (*need_emulation_on_page_fault)(struct kvm_vcpu *vcpu);
1211 struct kvm_arch_async_pf {
1218 extern struct kvm_x86_ops *kvm_x86_ops;
1219 extern struct kmem_cache *x86_fpu_cache;
1221 #define __KVM_HAVE_ARCH_VM_ALLOC
1222 static inline struct kvm *kvm_arch_alloc_vm(void)
1224 return kvm_x86_ops->vm_alloc();
1227 static inline void kvm_arch_free_vm(struct kvm *kvm)
1229 return kvm_x86_ops->vm_free(kvm);
1232 #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB
1233 static inline int kvm_arch_flush_remote_tlb(struct kvm *kvm)
1235 if (kvm_x86_ops->tlb_remote_flush &&
1236 !kvm_x86_ops->tlb_remote_flush(kvm))
1242 int kvm_mmu_module_init(void);
1243 void kvm_mmu_module_exit(void);
1245 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
1246 int kvm_mmu_create(struct kvm_vcpu *vcpu);
1247 void kvm_mmu_init_vm(struct kvm *kvm);
1248 void kvm_mmu_uninit_vm(struct kvm *kvm);
1249 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
1250 u64 dirty_mask, u64 nx_mask, u64 x_mask, u64 p_mask,
1251 u64 acc_track_mask, u64 me_mask);
1253 void kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
1254 void kvm_mmu_slot_remove_write_access(struct kvm *kvm,
1255 struct kvm_memory_slot *memslot);
1256 void kvm_mmu_zap_collapsible_sptes(struct kvm *kvm,
1257 const struct kvm_memory_slot *memslot);
1258 void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm,
1259 struct kvm_memory_slot *memslot);
1260 void kvm_mmu_slot_largepage_remove_write_access(struct kvm *kvm,
1261 struct kvm_memory_slot *memslot);
1262 void kvm_mmu_slot_set_dirty(struct kvm *kvm,
1263 struct kvm_memory_slot *memslot);
1264 void kvm_mmu_clear_dirty_pt_masked(struct kvm *kvm,
1265 struct kvm_memory_slot *slot,
1266 gfn_t gfn_offset, unsigned long mask);
1267 void kvm_mmu_zap_all(struct kvm *kvm);
1268 void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm, u64 gen);
1269 unsigned long kvm_mmu_calculate_default_mmu_pages(struct kvm *kvm);
1270 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned long kvm_nr_mmu_pages);
1272 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
1273 bool pdptrs_changed(struct kvm_vcpu *vcpu);
1275 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
1276 const void *val, int bytes);
1278 struct kvm_irq_mask_notifier {
1279 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
1281 struct hlist_node link;
1284 void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
1285 struct kvm_irq_mask_notifier *kimn);
1286 void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
1287 struct kvm_irq_mask_notifier *kimn);
1288 void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
1291 extern bool tdp_enabled;
1293 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
1295 /* control of guest tsc rate supported? */
1296 extern bool kvm_has_tsc_control;
1297 /* maximum supported tsc_khz for guests */
1298 extern u32 kvm_max_guest_tsc_khz;
1299 /* number of bits of the fractional part of the TSC scaling ratio */
1300 extern u8 kvm_tsc_scaling_ratio_frac_bits;
1301 /* maximum allowed value of TSC scaling ratio */
1302 extern u64 kvm_max_tsc_scaling_ratio;
1303 /* 1ull << kvm_tsc_scaling_ratio_frac_bits */
1304 extern u64 kvm_default_tsc_scaling_ratio;
1306 extern u64 kvm_mce_cap_supported;
1308 enum emulation_result {
1309 EMULATE_DONE, /* no further processing */
1310 EMULATE_USER_EXIT, /* kvm_run ready for userspace exit */
1311 EMULATE_FAIL, /* can't emulate this instruction */
1314 #define EMULTYPE_NO_DECODE (1 << 0)
1315 #define EMULTYPE_TRAP_UD (1 << 1)
1316 #define EMULTYPE_SKIP (1 << 2)
1317 #define EMULTYPE_ALLOW_RETRY (1 << 3)
1318 #define EMULTYPE_NO_UD_ON_FAIL (1 << 4)
1319 #define EMULTYPE_VMWARE (1 << 5)
1320 int kvm_emulate_instruction(struct kvm_vcpu *vcpu, int emulation_type);
1321 int kvm_emulate_instruction_from_buffer(struct kvm_vcpu *vcpu,
1322 void *insn, int insn_len);
1324 void kvm_enable_efer_bits(u64);
1325 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer);
1326 int kvm_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
1327 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
1329 struct x86_emulate_ctxt;
1331 int kvm_fast_pio(struct kvm_vcpu *vcpu, int size, unsigned short port, int in);
1332 int kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
1333 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
1334 int kvm_vcpu_halt(struct kvm_vcpu *vcpu);
1335 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
1337 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
1338 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
1339 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector);
1341 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
1342 int reason, bool has_error_code, u32 error_code);
1344 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
1345 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
1346 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
1347 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
1348 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
1349 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
1350 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
1351 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
1352 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
1353 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
1355 int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
1356 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
1358 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
1359 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
1360 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
1362 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
1363 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
1364 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
1365 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
1366 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
1367 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
1368 gfn_t gfn, void *data, int offset, int len,
1370 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
1371 bool kvm_require_dr(struct kvm_vcpu *vcpu, int dr);
1373 static inline int __kvm_irq_line_state(unsigned long *irq_state,
1374 int irq_source_id, int level)
1376 /* Logical OR for level trig interrupt */
1378 __set_bit(irq_source_id, irq_state);
1380 __clear_bit(irq_source_id, irq_state);
1382 return !!(*irq_state);
1385 #define KVM_MMU_ROOT_CURRENT BIT(0)
1386 #define KVM_MMU_ROOT_PREVIOUS(i) BIT(1+i)
1387 #define KVM_MMU_ROOTS_ALL (~0UL)
1389 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
1390 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
1392 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
1394 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
1395 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
1396 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
1397 int kvm_mmu_load(struct kvm_vcpu *vcpu);
1398 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
1399 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
1400 void kvm_mmu_free_roots(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
1401 ulong roots_to_free);
1402 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
1403 struct x86_exception *exception);
1404 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
1405 struct x86_exception *exception);
1406 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
1407 struct x86_exception *exception);
1408 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
1409 struct x86_exception *exception);
1410 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
1411 struct x86_exception *exception);
1413 void kvm_vcpu_deactivate_apicv(struct kvm_vcpu *vcpu);
1415 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
1417 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u64 error_code,
1418 void *insn, int insn_len);
1419 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
1420 void kvm_mmu_invpcid_gva(struct kvm_vcpu *vcpu, gva_t gva, unsigned long pcid);
1421 void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu, gpa_t new_cr3, bool skip_tlb_flush);
1423 void kvm_enable_tdp(void);
1424 void kvm_disable_tdp(void);
1426 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
1427 struct x86_exception *exception)
1432 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
1434 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
1436 return (struct kvm_mmu_page *)page_private(page);
1439 static inline u16 kvm_read_ldt(void)
1442 asm("sldt %0" : "=g"(ldt));
1446 static inline void kvm_load_ldt(u16 sel)
1448 asm("lldt %0" : : "rm"(sel));
1451 #ifdef CONFIG_X86_64
1452 static inline unsigned long read_msr(unsigned long msr)
1461 static inline u32 get_rdx_init_val(void)
1463 return 0x600; /* P6 family */
1466 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
1468 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
1471 #define TSS_IOPB_BASE_OFFSET 0x66
1472 #define TSS_BASE_SIZE 0x68
1473 #define TSS_IOPB_SIZE (65536 / 8)
1474 #define TSS_REDIRECTION_SIZE (256 / 8)
1475 #define RMODE_TSS_SIZE \
1476 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
1479 TASK_SWITCH_CALL = 0,
1480 TASK_SWITCH_IRET = 1,
1481 TASK_SWITCH_JMP = 2,
1482 TASK_SWITCH_GATE = 3,
1485 #define HF_GIF_MASK (1 << 0)
1486 #define HF_HIF_MASK (1 << 1)
1487 #define HF_VINTR_MASK (1 << 2)
1488 #define HF_NMI_MASK (1 << 3)
1489 #define HF_IRET_MASK (1 << 4)
1490 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
1491 #define HF_SMM_MASK (1 << 6)
1492 #define HF_SMM_INSIDE_NMI_MASK (1 << 7)
1494 #define __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
1495 #define KVM_ADDRESS_SPACE_NUM 2
1497 #define kvm_arch_vcpu_memslots_id(vcpu) ((vcpu)->arch.hflags & HF_SMM_MASK ? 1 : 0)
1498 #define kvm_memslots_for_spte_role(kvm, role) __kvm_memslots(kvm, (role).smm)
1500 asmlinkage void __noreturn kvm_spurious_fault(void);
1503 * Hardware virtualization extension instructions may fault if a
1504 * reboot turns off virtualization while processes are running.
1505 * Usually after catching the fault we just panic; during reboot
1506 * instead the instruction is ignored.
1508 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
1513 "call kvm_spurious_fault \n\t" \
1515 ".pushsection .fixup, \"ax\" \n\t" \
1517 cleanup_insn "\n\t" \
1518 "cmpb $0, kvm_rebooting\n\t" \
1521 ".popsection \n\t" \
1522 _ASM_EXTABLE(666b, 700b)
1524 #define __kvm_handle_fault_on_reboot(insn) \
1525 ____kvm_handle_fault_on_reboot(insn, "")
1527 #define KVM_ARCH_WANT_MMU_NOTIFIER
1528 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
1529 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
1530 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
1531 int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
1532 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v);
1533 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
1534 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
1535 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
1536 void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event);
1537 void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu *vcpu);
1539 int kvm_pv_send_ipi(struct kvm *kvm, unsigned long ipi_bitmap_low,
1540 unsigned long ipi_bitmap_high, u32 min,
1541 unsigned long icr, int op_64_bit);
1543 void kvm_define_shared_msr(unsigned index, u32 msr);
1544 int kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
1546 u64 kvm_scale_tsc(struct kvm_vcpu *vcpu, u64 tsc);
1547 u64 kvm_read_l1_tsc(struct kvm_vcpu *vcpu, u64 host_tsc);
1549 unsigned long kvm_get_linear_rip(struct kvm_vcpu *vcpu);
1550 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
1552 void kvm_make_mclock_inprogress_request(struct kvm *kvm);
1553 void kvm_make_scan_ioapic_request(struct kvm *kvm);
1555 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1556 struct kvm_async_pf *work);
1557 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1558 struct kvm_async_pf *work);
1559 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1560 struct kvm_async_pf *work);
1561 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
1562 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
1564 int kvm_skip_emulated_instruction(struct kvm_vcpu *vcpu);
1565 int kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
1566 void __kvm_request_immediate_exit(struct kvm_vcpu *vcpu);
1568 int kvm_is_in_guest(void);
1570 int __x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size);
1571 int x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size);
1572 bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu);
1573 bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu);
1575 bool kvm_intr_is_single_vcpu(struct kvm *kvm, struct kvm_lapic_irq *irq,
1576 struct kvm_vcpu **dest_vcpu);
1578 void kvm_set_msi_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e,
1579 struct kvm_lapic_irq *irq);
1581 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu)
1583 if (kvm_x86_ops->vcpu_blocking)
1584 kvm_x86_ops->vcpu_blocking(vcpu);
1587 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu)
1589 if (kvm_x86_ops->vcpu_unblocking)
1590 kvm_x86_ops->vcpu_unblocking(vcpu);
1593 static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
1595 static inline int kvm_cpu_get_apicid(int mps_cpu)
1597 #ifdef CONFIG_X86_LOCAL_APIC
1598 return default_cpu_present_to_apicid(mps_cpu);
1605 #define put_smstate(type, buf, offset, val) \
1606 *(type *)((buf) + (offset) - 0x7e00) = val
1608 #define GET_SMSTATE(type, buf, offset) \
1609 (*(type *)((buf) + (offset) - 0x7e00))
1611 #endif /* _ASM_X86_KVM_HOST_H */