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>
27 #include <linux/irqbypass.h>
28 #include <linux/hyperv.h>
31 #include <asm/pvclock-abi.h>
34 #include <asm/msr-index.h>
36 #include <asm/kvm_page_track.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_EVENT KVM_ARCH_REQ(6)
57 #define KVM_REQ_APF_HALT KVM_ARCH_REQ(7)
58 #define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(8)
59 #define KVM_REQ_NMI KVM_ARCH_REQ(9)
60 #define KVM_REQ_PMU KVM_ARCH_REQ(10)
61 #define KVM_REQ_PMI KVM_ARCH_REQ(11)
62 #define KVM_REQ_SMI KVM_ARCH_REQ(12)
63 #define KVM_REQ_MASTERCLOCK_UPDATE KVM_ARCH_REQ(13)
64 #define KVM_REQ_MCLOCK_INPROGRESS \
65 KVM_ARCH_REQ_FLAGS(14, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
66 #define KVM_REQ_SCAN_IOAPIC \
67 KVM_ARCH_REQ_FLAGS(15, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
68 #define KVM_REQ_GLOBAL_CLOCK_UPDATE KVM_ARCH_REQ(16)
69 #define KVM_REQ_APIC_PAGE_RELOAD \
70 KVM_ARCH_REQ_FLAGS(17, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
71 #define KVM_REQ_HV_CRASH KVM_ARCH_REQ(18)
72 #define KVM_REQ_IOAPIC_EOI_EXIT KVM_ARCH_REQ(19)
73 #define KVM_REQ_HV_RESET KVM_ARCH_REQ(20)
74 #define KVM_REQ_HV_EXIT KVM_ARCH_REQ(21)
75 #define KVM_REQ_HV_STIMER KVM_ARCH_REQ(22)
77 #define CR0_RESERVED_BITS \
78 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
79 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
80 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
82 #define CR3_PCID_INVD BIT_64(63)
83 #define CR4_RESERVED_BITS \
84 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
85 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
86 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
87 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \
88 | X86_CR4_OSXMMEXCPT | X86_CR4_LA57 | X86_CR4_VMXE \
89 | X86_CR4_SMAP | X86_CR4_PKE))
91 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
95 #define INVALID_PAGE (~(hpa_t)0)
96 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
98 #define UNMAPPED_GVA (~(gpa_t)0)
100 /* KVM Hugepage definitions for x86 */
101 #define KVM_NR_PAGE_SIZES 3
102 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
103 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
104 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
105 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
106 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
108 static inline gfn_t
gfn_to_index(gfn_t gfn
, gfn_t base_gfn
, int level
)
110 /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */
111 return (gfn
>> KVM_HPAGE_GFN_SHIFT(level
)) -
112 (base_gfn
>> KVM_HPAGE_GFN_SHIFT(level
));
115 #define KVM_PERMILLE_MMU_PAGES 20
116 #define KVM_MIN_ALLOC_MMU_PAGES 64
117 #define KVM_MMU_HASH_SHIFT 12
118 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
119 #define KVM_MIN_FREE_MMU_PAGES 5
120 #define KVM_REFILL_PAGES 25
121 #define KVM_MAX_CPUID_ENTRIES 80
122 #define KVM_NR_FIXED_MTRR_REGION 88
123 #define KVM_NR_VAR_MTRR 8
125 #define ASYNC_PF_PER_VCPU 64
151 VCPU_EXREG_PDPTR
= NR_VCPU_REGS
,
168 #include <asm/kvm_emulate.h>
170 #define KVM_NR_MEM_OBJS 40
172 #define KVM_NR_DB_REGS 4
174 #define DR6_BD (1 << 13)
175 #define DR6_BS (1 << 14)
176 #define DR6_RTM (1 << 16)
177 #define DR6_FIXED_1 0xfffe0ff0
178 #define DR6_INIT 0xffff0ff0
179 #define DR6_VOLATILE 0x0001e00f
181 #define DR7_BP_EN_MASK 0x000000ff
182 #define DR7_GE (1 << 9)
183 #define DR7_GD (1 << 13)
184 #define DR7_FIXED_1 0x00000400
185 #define DR7_VOLATILE 0xffff2bff
187 #define PFERR_PRESENT_BIT 0
188 #define PFERR_WRITE_BIT 1
189 #define PFERR_USER_BIT 2
190 #define PFERR_RSVD_BIT 3
191 #define PFERR_FETCH_BIT 4
192 #define PFERR_PK_BIT 5
193 #define PFERR_GUEST_FINAL_BIT 32
194 #define PFERR_GUEST_PAGE_BIT 33
196 #define PFERR_PRESENT_MASK (1U << PFERR_PRESENT_BIT)
197 #define PFERR_WRITE_MASK (1U << PFERR_WRITE_BIT)
198 #define PFERR_USER_MASK (1U << PFERR_USER_BIT)
199 #define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT)
200 #define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT)
201 #define PFERR_PK_MASK (1U << PFERR_PK_BIT)
202 #define PFERR_GUEST_FINAL_MASK (1ULL << PFERR_GUEST_FINAL_BIT)
203 #define PFERR_GUEST_PAGE_MASK (1ULL << PFERR_GUEST_PAGE_BIT)
205 #define PFERR_NESTED_GUEST_PAGE (PFERR_GUEST_PAGE_MASK | \
210 * The mask used to denote special SPTEs, which can be either MMIO SPTEs or
211 * Access Tracking SPTEs. We use bit 62 instead of bit 63 to avoid conflicting
212 * with the SVE bit in EPT PTEs.
214 #define SPTE_SPECIAL_MASK (1ULL << 62)
216 /* apic attention bits */
217 #define KVM_APIC_CHECK_VAPIC 0
219 * The following bit is set with PV-EOI, unset on EOI.
220 * We detect PV-EOI changes by guest by comparing
221 * this bit with PV-EOI in guest memory.
222 * See the implementation in apic_update_pv_eoi.
224 #define KVM_APIC_PV_EOI_PENDING 1
226 struct kvm_kernel_irq_routing_entry
;
229 * We don't want allocation failures within the mmu code, so we preallocate
230 * enough memory for a single page fault in a cache.
232 struct kvm_mmu_memory_cache
{
234 void *objects
[KVM_NR_MEM_OBJS
];
238 * the pages used as guest page table on soft mmu are tracked by
239 * kvm_memory_slot.arch.gfn_track which is 16 bits, so the role bits used
240 * by indirect shadow page can not be more than 15 bits.
242 * Currently, we used 14 bits that are @level, @cr4_pae, @quadrant, @access,
243 * @nxe, @cr0_wp, @smep_andnot_wp and @smap_andnot_wp.
245 union kvm_mmu_page_role
{
256 unsigned smep_andnot_wp
:1;
257 unsigned smap_andnot_wp
:1;
258 unsigned ad_disabled
:1;
262 * This is left at the top of the word so that
263 * kvm_memslots_for_spte_role can extract it with a
264 * simple shift. While there is room, give it a whole
265 * byte so it is also faster to load it from memory.
271 struct kvm_rmap_head
{
275 struct kvm_mmu_page
{
276 struct list_head link
;
277 struct hlist_node hash_link
;
280 * The following two entries are used to key the shadow page in the
284 union kvm_mmu_page_role role
;
287 /* hold the gfn of each spte inside spt */
290 int root_count
; /* Currently serving as active root */
291 unsigned int unsync_children
;
292 struct kvm_rmap_head parent_ptes
; /* rmap pointers to parent sptes */
294 /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */
295 unsigned long mmu_valid_gen
;
297 DECLARE_BITMAP(unsync_child_bitmap
, 512);
301 * Used out of the mmu-lock to avoid reading spte values while an
302 * update is in progress; see the comments in __get_spte_lockless().
304 int clear_spte_count
;
307 /* Number of writes since the last time traversal visited this page. */
308 atomic_t write_flooding_count
;
311 struct kvm_pio_request
{
318 #define PT64_ROOT_MAX_LEVEL 5
320 struct rsvd_bits_validate
{
321 u64 rsvd_bits_mask
[2][PT64_ROOT_MAX_LEVEL
];
326 * x86 supports 4 paging modes (5-level 64-bit, 4-level 64-bit, 3-level 32-bit,
327 * and 2-level 32-bit). The kvm_mmu structure abstracts the details of the
331 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long root
);
332 unsigned long (*get_cr3
)(struct kvm_vcpu
*vcpu
);
333 u64 (*get_pdptr
)(struct kvm_vcpu
*vcpu
, int index
);
334 int (*page_fault
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 err
,
336 void (*inject_page_fault
)(struct kvm_vcpu
*vcpu
,
337 struct x86_exception
*fault
);
338 gpa_t (*gva_to_gpa
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 access
,
339 struct x86_exception
*exception
);
340 gpa_t (*translate_gpa
)(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
341 struct x86_exception
*exception
);
342 int (*sync_page
)(struct kvm_vcpu
*vcpu
,
343 struct kvm_mmu_page
*sp
);
344 void (*invlpg
)(struct kvm_vcpu
*vcpu
, gva_t gva
);
345 void (*update_pte
)(struct kvm_vcpu
*vcpu
, struct kvm_mmu_page
*sp
,
346 u64
*spte
, const void *pte
);
348 union kvm_mmu_page_role base_role
;
350 u8 shadow_root_level
;
355 * Bitmap; bit set = permission fault
356 * Byte index: page fault error code [4:1]
357 * Bit index: pte permissions in ACC_* format
362 * The pkru_mask indicates if protection key checks are needed. It
363 * consists of 16 domains indexed by page fault error code bits [4:1],
364 * with PFEC.RSVD replaced by ACC_USER_MASK from the page tables.
365 * Each domain has 2 bits which are ANDed with AD and WD from PKRU.
373 * check zero bits on shadow page table entries, these
374 * bits include not only hardware reserved bits but also
375 * the bits spte never used.
377 struct rsvd_bits_validate shadow_zero_check
;
379 struct rsvd_bits_validate guest_rsvd_check
;
381 /* Can have large pages at levels 2..last_nonleaf_level-1. */
382 u8 last_nonleaf_level
;
386 u64 pdptrs
[4]; /* pae */
399 struct perf_event
*perf_event
;
400 struct kvm_vcpu
*vcpu
;
404 unsigned nr_arch_gp_counters
;
405 unsigned nr_arch_fixed_counters
;
406 unsigned available_event_types
;
411 u64 counter_bitmask
[2];
412 u64 global_ctrl_mask
;
415 struct kvm_pmc gp_counters
[INTEL_PMC_MAX_GENERIC
];
416 struct kvm_pmc fixed_counters
[INTEL_PMC_MAX_FIXED
];
417 struct irq_work irq_work
;
424 KVM_DEBUGREG_BP_ENABLED
= 1,
425 KVM_DEBUGREG_WONT_EXIT
= 2,
426 KVM_DEBUGREG_RELOAD
= 4,
429 struct kvm_mtrr_range
{
432 struct list_head node
;
436 struct kvm_mtrr_range var_ranges
[KVM_NR_VAR_MTRR
];
437 mtrr_type fixed_ranges
[KVM_NR_FIXED_MTRR_REGION
];
440 struct list_head head
;
443 /* Hyper-V SynIC timer */
444 struct kvm_vcpu_hv_stimer
{
445 struct hrtimer timer
;
450 struct hv_message msg
;
454 /* Hyper-V synthetic interrupt controller (SynIC)*/
455 struct kvm_vcpu_hv_synic
{
460 atomic64_t sint
[HV_SYNIC_SINT_COUNT
];
461 atomic_t sint_to_gsi
[HV_SYNIC_SINT_COUNT
];
462 DECLARE_BITMAP(auto_eoi_bitmap
, 256);
463 DECLARE_BITMAP(vec_bitmap
, 256);
465 bool dont_zero_synic_pages
;
468 /* Hyper-V per vcpu emulation context */
473 struct kvm_vcpu_hv_synic synic
;
474 struct kvm_hyperv_exit exit
;
475 struct kvm_vcpu_hv_stimer stimer
[HV_SYNIC_STIMER_COUNT
];
476 DECLARE_BITMAP(stimer_pending_bitmap
, HV_SYNIC_STIMER_COUNT
);
479 struct kvm_vcpu_arch
{
481 * rip and regs accesses must go through
482 * kvm_{register,rip}_{read,write} functions.
484 unsigned long regs
[NR_VCPU_REGS
];
489 unsigned long cr0_guest_owned_bits
;
493 unsigned long cr4_guest_owned_bits
;
499 struct kvm_lapic
*apic
; /* kernel irqchip context */
501 DECLARE_BITMAP(ioapic_handled_vectors
, 256);
502 unsigned long apic_attention
;
503 int32_t apic_arb_prio
;
505 u64 ia32_misc_enable_msr
;
507 bool tpr_access_reporting
;
511 * Paging state of the vcpu
513 * If the vcpu runs in guest mode with two level paging this still saves
514 * the paging mode of the l1 guest. This context is always used to
520 * Paging state of an L2 guest (used for nested npt)
522 * This context will save all necessary information to walk page tables
523 * of the an L2 guest. This context is only initialized for page table
524 * walking and not for faulting since we never handle l2 page faults on
527 struct kvm_mmu nested_mmu
;
530 * Pointer to the mmu context currently used for
531 * gva_to_gpa translations.
533 struct kvm_mmu
*walk_mmu
;
535 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache
;
536 struct kvm_mmu_memory_cache mmu_page_cache
;
537 struct kvm_mmu_memory_cache mmu_page_header_cache
;
540 * QEMU userspace and the guest each have their own FPU state.
541 * In vcpu_run, we switch between the user and guest FPU contexts.
542 * While running a VCPU, the VCPU thread will have the guest FPU
545 * Note that while the PKRU state lives inside the fpu registers,
546 * it is switched out separately at VMENTER and VMEXIT time. The
547 * "guest_fpu" state here contains the guest FPU context, with the
551 struct fpu guest_fpu
;
554 u64 guest_supported_xcr0
;
555 u32 guest_xstate_size
;
557 struct kvm_pio_request pio
;
560 u8 event_exit_inst_len
;
562 struct kvm_queued_exception
{
571 struct kvm_queued_interrupt
{
577 int halt_request
; /* real mode on Intel only */
580 struct kvm_cpuid_entry2 cpuid_entries
[KVM_MAX_CPUID_ENTRIES
];
584 /* emulate context */
586 struct x86_emulate_ctxt emulate_ctxt
;
587 bool emulate_regs_need_sync_to_vcpu
;
588 bool emulate_regs_need_sync_from_vcpu
;
589 int (*complete_userspace_io
)(struct kvm_vcpu
*vcpu
);
592 struct pvclock_vcpu_time_info hv_clock
;
593 unsigned int hw_tsc_khz
;
594 struct gfn_to_hva_cache pv_time
;
595 bool pv_time_enabled
;
596 /* set guest stopped flag in pvclock flags field */
597 bool pvclock_set_guest_stopped_request
;
602 struct gfn_to_hva_cache stime
;
603 struct kvm_steal_time steal
;
609 u64 tsc_offset_adjustment
;
612 u64 this_tsc_generation
;
614 bool tsc_always_catchup
;
615 s8 virtual_tsc_shift
;
616 u32 virtual_tsc_mult
;
618 s64 ia32_tsc_adjust_msr
;
619 u64 tsc_scaling_ratio
;
621 atomic_t nmi_queued
; /* unprocessed asynchronous NMIs */
622 unsigned nmi_pending
; /* NMI queued after currently running handler */
623 bool nmi_injected
; /* Trying to inject an NMI this entry */
624 bool smi_pending
; /* SMI queued after currently running handler */
626 struct kvm_mtrr mtrr_state
;
629 unsigned switch_db_regs
;
630 unsigned long db
[KVM_NR_DB_REGS
];
633 unsigned long eff_db
[KVM_NR_DB_REGS
];
634 unsigned long guest_debug_dr7
;
635 u64 msr_platform_info
;
636 u64 msr_misc_features_enables
;
644 /* Cache MMIO info */
652 /* used for guest single stepping over the given code position */
653 unsigned long singlestep_rip
;
655 struct kvm_vcpu_hv hyperv
;
657 cpumask_var_t wbinvd_dirty_mask
;
659 unsigned long last_retry_eip
;
660 unsigned long last_retry_addr
;
664 gfn_t gfns
[roundup_pow_of_two(ASYNC_PF_PER_VCPU
)];
665 struct gfn_to_hva_cache data
;
670 unsigned long nested_apf_token
;
671 bool delivery_as_pf_vmexit
;
674 /* OSVW MSRs (AMD only) */
682 struct gfn_to_hva_cache data
;
686 * Indicate whether the access faults on its page table in guest
687 * which is set when fix page fault and used to detect unhandeable
690 bool write_fault_to_shadow_pgtable
;
692 /* set at EPT violation at this point */
693 unsigned long exit_qualification
;
695 /* pv related host specific info */
700 int pending_ioapic_eoi
;
701 int pending_external_vector
;
707 /* be preempted when it's in kernel-mode(cpl=0) */
708 bool preempted_in_kernel
;
711 struct kvm_lpage_info
{
715 struct kvm_arch_memory_slot
{
716 struct kvm_rmap_head
*rmap
[KVM_NR_PAGE_SIZES
];
717 struct kvm_lpage_info
*lpage_info
[KVM_NR_PAGE_SIZES
- 1];
718 unsigned short *gfn_track
[KVM_PAGE_TRACK_MAX
];
722 * We use as the mode the number of bits allocated in the LDR for the
723 * logical processor ID. It happens that these are all powers of two.
724 * This makes it is very easy to detect cases where the APICs are
725 * configured for multiple modes; in that case, we cannot use the map and
726 * hence cannot use kvm_irq_delivery_to_apic_fast either.
728 #define KVM_APIC_MODE_XAPIC_CLUSTER 4
729 #define KVM_APIC_MODE_XAPIC_FLAT 8
730 #define KVM_APIC_MODE_X2APIC 16
732 struct kvm_apic_map
{
737 struct kvm_lapic
*xapic_flat_map
[8];
738 struct kvm_lapic
*xapic_cluster_map
[16][4];
740 struct kvm_lapic
*phys_map
[];
743 /* Hyper-V emulation context */
745 struct mutex hv_lock
;
750 /* Hyper-v based guest crash (NT kernel bugcheck) parameters */
751 u64 hv_crash_param
[HV_X64_MSR_CRASH_PARAMS
];
754 HV_REFERENCE_TSC_PAGE tsc_ref
;
757 enum kvm_irqchip_mode
{
759 KVM_IRQCHIP_KERNEL
, /* created with KVM_CREATE_IRQCHIP */
760 KVM_IRQCHIP_SPLIT
, /* created with KVM_CAP_SPLIT_IRQCHIP */
764 unsigned int n_used_mmu_pages
;
765 unsigned int n_requested_mmu_pages
;
766 unsigned int n_max_mmu_pages
;
767 unsigned int indirect_shadow_pages
;
768 unsigned long mmu_valid_gen
;
769 struct hlist_head mmu_page_hash
[KVM_NUM_MMU_PAGES
];
771 * Hash table of struct kvm_mmu_page.
773 struct list_head active_mmu_pages
;
774 struct list_head zapped_obsolete_pages
;
775 struct kvm_page_track_notifier_node mmu_sp_tracker
;
776 struct kvm_page_track_notifier_head track_notifier_head
;
778 struct list_head assigned_dev_head
;
779 struct iommu_domain
*iommu_domain
;
780 bool iommu_noncoherent
;
781 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA
782 atomic_t noncoherent_dma_count
;
783 #define __KVM_HAVE_ARCH_ASSIGNED_DEVICE
784 atomic_t assigned_device_count
;
785 struct kvm_pic
*vpic
;
786 struct kvm_ioapic
*vioapic
;
787 struct kvm_pit
*vpit
;
788 atomic_t vapics_in_nmi_mode
;
789 struct mutex apic_map_lock
;
790 struct kvm_apic_map
*apic_map
;
792 unsigned int tss_addr
;
793 bool apic_access_page_done
;
797 bool ept_identity_pagetable_done
;
798 gpa_t ept_identity_map_addr
;
800 unsigned long irq_sources_bitmap
;
802 raw_spinlock_t tsc_write_lock
;
809 u64 cur_tsc_generation
;
810 int nr_vcpus_matched_tsc
;
812 spinlock_t pvclock_gtod_sync_lock
;
813 bool use_master_clock
;
814 u64 master_kernel_ns
;
815 u64 master_cycle_now
;
816 struct delayed_work kvmclock_update_work
;
817 struct delayed_work kvmclock_sync_work
;
819 struct kvm_xen_hvm_config xen_hvm_config
;
821 /* reads protected by irq_srcu, writes by irq_lock */
822 struct hlist_head mask_notifier_list
;
824 struct kvm_hv hyperv
;
826 #ifdef CONFIG_KVM_MMU_AUDIT
830 bool backwards_tsc_observed
;
831 bool boot_vcpu_runs_old_kvmclock
;
836 enum kvm_irqchip_mode irqchip_mode
;
837 u8 nr_reserved_ioapic_pins
;
839 bool disabled_lapic_found
;
841 /* Struct members for AVIC */
844 struct page
*avic_logical_id_table_page
;
845 struct page
*avic_physical_id_table_page
;
846 struct hlist_node hnode
;
849 bool x2apic_broadcast_quirk_disabled
;
853 ulong mmu_shadow_zapped
;
855 ulong mmu_pte_updated
;
856 ulong mmu_pde_zapped
;
859 ulong mmu_cache_miss
;
861 ulong remote_tlb_flush
;
863 ulong max_mmu_page_hash_collisions
;
866 struct kvm_vcpu_stat
{
876 u64 irq_window_exits
;
877 u64 nmi_window_exits
;
879 u64 halt_successful_poll
;
880 u64 halt_attempted_poll
;
881 u64 halt_poll_invalid
;
883 u64 request_irq_exits
;
885 u64 host_state_reload
;
889 u64 insn_emulation_fail
;
896 struct x86_instruction_info
;
904 struct kvm_lapic_irq
{
916 int (*cpu_has_kvm_support
)(void); /* __init */
917 int (*disabled_by_bios
)(void); /* __init */
918 int (*hardware_enable
)(void);
919 void (*hardware_disable
)(void);
920 void (*check_processor_compatibility
)(void *rtn
);
921 int (*hardware_setup
)(void); /* __init */
922 void (*hardware_unsetup
)(void); /* __exit */
923 bool (*cpu_has_accelerated_tpr
)(void);
924 bool (*cpu_has_high_real_mode_segbase
)(void);
925 void (*cpuid_update
)(struct kvm_vcpu
*vcpu
);
927 int (*vm_init
)(struct kvm
*kvm
);
928 void (*vm_destroy
)(struct kvm
*kvm
);
930 /* Create, but do not attach this VCPU */
931 struct kvm_vcpu
*(*vcpu_create
)(struct kvm
*kvm
, unsigned id
);
932 void (*vcpu_free
)(struct kvm_vcpu
*vcpu
);
933 void (*vcpu_reset
)(struct kvm_vcpu
*vcpu
, bool init_event
);
935 void (*prepare_guest_switch
)(struct kvm_vcpu
*vcpu
);
936 void (*vcpu_load
)(struct kvm_vcpu
*vcpu
, int cpu
);
937 void (*vcpu_put
)(struct kvm_vcpu
*vcpu
);
939 void (*update_bp_intercept
)(struct kvm_vcpu
*vcpu
);
940 int (*get_msr
)(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
941 int (*set_msr
)(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
942 u64 (*get_segment_base
)(struct kvm_vcpu
*vcpu
, int seg
);
943 void (*get_segment
)(struct kvm_vcpu
*vcpu
,
944 struct kvm_segment
*var
, int seg
);
945 int (*get_cpl
)(struct kvm_vcpu
*vcpu
);
946 void (*set_segment
)(struct kvm_vcpu
*vcpu
,
947 struct kvm_segment
*var
, int seg
);
948 void (*get_cs_db_l_bits
)(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
949 void (*decache_cr0_guest_bits
)(struct kvm_vcpu
*vcpu
);
950 void (*decache_cr3
)(struct kvm_vcpu
*vcpu
);
951 void (*decache_cr4_guest_bits
)(struct kvm_vcpu
*vcpu
);
952 void (*set_cr0
)(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
953 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
954 int (*set_cr4
)(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
955 void (*set_efer
)(struct kvm_vcpu
*vcpu
, u64 efer
);
956 void (*get_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
957 void (*set_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
958 void (*get_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
959 void (*set_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
960 u64 (*get_dr6
)(struct kvm_vcpu
*vcpu
);
961 void (*set_dr6
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
962 void (*sync_dirty_debug_regs
)(struct kvm_vcpu
*vcpu
);
963 void (*set_dr7
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
964 void (*cache_reg
)(struct kvm_vcpu
*vcpu
, enum kvm_reg reg
);
965 unsigned long (*get_rflags
)(struct kvm_vcpu
*vcpu
);
966 void (*set_rflags
)(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
968 void (*tlb_flush
)(struct kvm_vcpu
*vcpu
);
970 void (*run
)(struct kvm_vcpu
*vcpu
);
971 int (*handle_exit
)(struct kvm_vcpu
*vcpu
);
972 void (*skip_emulated_instruction
)(struct kvm_vcpu
*vcpu
);
973 void (*set_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
974 u32 (*get_interrupt_shadow
)(struct kvm_vcpu
*vcpu
);
975 void (*patch_hypercall
)(struct kvm_vcpu
*vcpu
,
976 unsigned char *hypercall_addr
);
977 void (*set_irq
)(struct kvm_vcpu
*vcpu
);
978 void (*set_nmi
)(struct kvm_vcpu
*vcpu
);
979 void (*queue_exception
)(struct kvm_vcpu
*vcpu
);
980 void (*cancel_injection
)(struct kvm_vcpu
*vcpu
);
981 int (*interrupt_allowed
)(struct kvm_vcpu
*vcpu
);
982 int (*nmi_allowed
)(struct kvm_vcpu
*vcpu
);
983 bool (*get_nmi_mask
)(struct kvm_vcpu
*vcpu
);
984 void (*set_nmi_mask
)(struct kvm_vcpu
*vcpu
, bool masked
);
985 void (*enable_nmi_window
)(struct kvm_vcpu
*vcpu
);
986 void (*enable_irq_window
)(struct kvm_vcpu
*vcpu
);
987 void (*update_cr8_intercept
)(struct kvm_vcpu
*vcpu
, int tpr
, int irr
);
988 bool (*get_enable_apicv
)(struct kvm_vcpu
*vcpu
);
989 void (*refresh_apicv_exec_ctrl
)(struct kvm_vcpu
*vcpu
);
990 void (*hwapic_irr_update
)(struct kvm_vcpu
*vcpu
, int max_irr
);
991 void (*hwapic_isr_update
)(struct kvm_vcpu
*vcpu
, int isr
);
992 void (*load_eoi_exitmap
)(struct kvm_vcpu
*vcpu
, u64
*eoi_exit_bitmap
);
993 void (*set_virtual_x2apic_mode
)(struct kvm_vcpu
*vcpu
, bool set
);
994 void (*set_apic_access_page_addr
)(struct kvm_vcpu
*vcpu
, hpa_t hpa
);
995 void (*deliver_posted_interrupt
)(struct kvm_vcpu
*vcpu
, int vector
);
996 int (*sync_pir_to_irr
)(struct kvm_vcpu
*vcpu
);
997 int (*set_tss_addr
)(struct kvm
*kvm
, unsigned int addr
);
998 int (*get_tdp_level
)(struct kvm_vcpu
*vcpu
);
999 u64 (*get_mt_mask
)(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool is_mmio
);
1000 int (*get_lpage_level
)(void);
1001 bool (*rdtscp_supported
)(void);
1002 bool (*invpcid_supported
)(void);
1004 void (*set_tdp_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
1006 void (*set_supported_cpuid
)(u32 func
, struct kvm_cpuid_entry2
*entry
);
1008 bool (*has_wbinvd_exit
)(void);
1010 void (*write_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 offset
);
1012 void (*get_exit_info
)(struct kvm_vcpu
*vcpu
, u64
*info1
, u64
*info2
);
1014 int (*check_intercept
)(struct kvm_vcpu
*vcpu
,
1015 struct x86_instruction_info
*info
,
1016 enum x86_intercept_stage stage
);
1017 void (*handle_external_intr
)(struct kvm_vcpu
*vcpu
);
1018 bool (*mpx_supported
)(void);
1019 bool (*xsaves_supported
)(void);
1021 int (*check_nested_events
)(struct kvm_vcpu
*vcpu
, bool external_intr
);
1023 void (*sched_in
)(struct kvm_vcpu
*kvm
, int cpu
);
1026 * Arch-specific dirty logging hooks. These hooks are only supposed to
1027 * be valid if the specific arch has hardware-accelerated dirty logging
1028 * mechanism. Currently only for PML on VMX.
1030 * - slot_enable_log_dirty:
1031 * called when enabling log dirty mode for the slot.
1032 * - slot_disable_log_dirty:
1033 * called when disabling log dirty mode for the slot.
1034 * also called when slot is created with log dirty disabled.
1035 * - flush_log_dirty:
1036 * called before reporting dirty_bitmap to userspace.
1037 * - enable_log_dirty_pt_masked:
1038 * called when reenabling log dirty for the GFNs in the mask after
1039 * corresponding bits are cleared in slot->dirty_bitmap.
1041 void (*slot_enable_log_dirty
)(struct kvm
*kvm
,
1042 struct kvm_memory_slot
*slot
);
1043 void (*slot_disable_log_dirty
)(struct kvm
*kvm
,
1044 struct kvm_memory_slot
*slot
);
1045 void (*flush_log_dirty
)(struct kvm
*kvm
);
1046 void (*enable_log_dirty_pt_masked
)(struct kvm
*kvm
,
1047 struct kvm_memory_slot
*slot
,
1048 gfn_t offset
, unsigned long mask
);
1049 int (*write_log_dirty
)(struct kvm_vcpu
*vcpu
);
1051 /* pmu operations of sub-arch */
1052 const struct kvm_pmu_ops
*pmu_ops
;
1055 * Architecture specific hooks for vCPU blocking due to
1057 * Returns for .pre_block():
1058 * - 0 means continue to block the vCPU.
1059 * - 1 means we cannot block the vCPU since some event
1060 * happens during this period, such as, 'ON' bit in
1061 * posted-interrupts descriptor is set.
1063 int (*pre_block
)(struct kvm_vcpu
*vcpu
);
1064 void (*post_block
)(struct kvm_vcpu
*vcpu
);
1066 void (*vcpu_blocking
)(struct kvm_vcpu
*vcpu
);
1067 void (*vcpu_unblocking
)(struct kvm_vcpu
*vcpu
);
1069 int (*update_pi_irte
)(struct kvm
*kvm
, unsigned int host_irq
,
1070 uint32_t guest_irq
, bool set
);
1071 void (*apicv_post_state_restore
)(struct kvm_vcpu
*vcpu
);
1073 int (*set_hv_timer
)(struct kvm_vcpu
*vcpu
, u64 guest_deadline_tsc
);
1074 void (*cancel_hv_timer
)(struct kvm_vcpu
*vcpu
);
1076 void (*setup_mce
)(struct kvm_vcpu
*vcpu
);
1078 int (*smi_allowed
)(struct kvm_vcpu
*vcpu
);
1079 int (*pre_enter_smm
)(struct kvm_vcpu
*vcpu
, char *smstate
);
1080 int (*pre_leave_smm
)(struct kvm_vcpu
*vcpu
, u64 smbase
);
1081 int (*enable_smi_window
)(struct kvm_vcpu
*vcpu
);
1084 struct kvm_arch_async_pf
{
1091 extern struct kvm_x86_ops
*kvm_x86_ops
;
1093 int kvm_mmu_module_init(void);
1094 void kvm_mmu_module_exit(void);
1096 void kvm_mmu_destroy(struct kvm_vcpu
*vcpu
);
1097 int kvm_mmu_create(struct kvm_vcpu
*vcpu
);
1098 void kvm_mmu_setup(struct kvm_vcpu
*vcpu
);
1099 void kvm_mmu_init_vm(struct kvm
*kvm
);
1100 void kvm_mmu_uninit_vm(struct kvm
*kvm
);
1101 void kvm_mmu_set_mask_ptes(u64 user_mask
, u64 accessed_mask
,
1102 u64 dirty_mask
, u64 nx_mask
, u64 x_mask
, u64 p_mask
,
1103 u64 acc_track_mask
, u64 me_mask
);
1105 void kvm_mmu_reset_context(struct kvm_vcpu
*vcpu
);
1106 void kvm_mmu_slot_remove_write_access(struct kvm
*kvm
,
1107 struct kvm_memory_slot
*memslot
);
1108 void kvm_mmu_zap_collapsible_sptes(struct kvm
*kvm
,
1109 const struct kvm_memory_slot
*memslot
);
1110 void kvm_mmu_slot_leaf_clear_dirty(struct kvm
*kvm
,
1111 struct kvm_memory_slot
*memslot
);
1112 void kvm_mmu_slot_largepage_remove_write_access(struct kvm
*kvm
,
1113 struct kvm_memory_slot
*memslot
);
1114 void kvm_mmu_slot_set_dirty(struct kvm
*kvm
,
1115 struct kvm_memory_slot
*memslot
);
1116 void kvm_mmu_clear_dirty_pt_masked(struct kvm
*kvm
,
1117 struct kvm_memory_slot
*slot
,
1118 gfn_t gfn_offset
, unsigned long mask
);
1119 void kvm_mmu_zap_all(struct kvm
*kvm
);
1120 void kvm_mmu_invalidate_mmio_sptes(struct kvm
*kvm
, struct kvm_memslots
*slots
);
1121 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm
*kvm
);
1122 void kvm_mmu_change_mmu_pages(struct kvm
*kvm
, unsigned int kvm_nr_mmu_pages
);
1124 int load_pdptrs(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
, unsigned long cr3
);
1125 bool pdptrs_changed(struct kvm_vcpu
*vcpu
);
1127 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
1128 const void *val
, int bytes
);
1130 struct kvm_irq_mask_notifier
{
1131 void (*func
)(struct kvm_irq_mask_notifier
*kimn
, bool masked
);
1133 struct hlist_node link
;
1136 void kvm_register_irq_mask_notifier(struct kvm
*kvm
, int irq
,
1137 struct kvm_irq_mask_notifier
*kimn
);
1138 void kvm_unregister_irq_mask_notifier(struct kvm
*kvm
, int irq
,
1139 struct kvm_irq_mask_notifier
*kimn
);
1140 void kvm_fire_mask_notifiers(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
,
1143 extern bool tdp_enabled
;
1145 u64
vcpu_tsc_khz(struct kvm_vcpu
*vcpu
);
1147 /* control of guest tsc rate supported? */
1148 extern bool kvm_has_tsc_control
;
1149 /* maximum supported tsc_khz for guests */
1150 extern u32 kvm_max_guest_tsc_khz
;
1151 /* number of bits of the fractional part of the TSC scaling ratio */
1152 extern u8 kvm_tsc_scaling_ratio_frac_bits
;
1153 /* maximum allowed value of TSC scaling ratio */
1154 extern u64 kvm_max_tsc_scaling_ratio
;
1155 /* 1ull << kvm_tsc_scaling_ratio_frac_bits */
1156 extern u64 kvm_default_tsc_scaling_ratio
;
1158 extern u64 kvm_mce_cap_supported
;
1160 enum emulation_result
{
1161 EMULATE_DONE
, /* no further processing */
1162 EMULATE_USER_EXIT
, /* kvm_run ready for userspace exit */
1163 EMULATE_FAIL
, /* can't emulate this instruction */
1166 #define EMULTYPE_NO_DECODE (1 << 0)
1167 #define EMULTYPE_TRAP_UD (1 << 1)
1168 #define EMULTYPE_SKIP (1 << 2)
1169 #define EMULTYPE_RETRY (1 << 3)
1170 #define EMULTYPE_NO_REEXECUTE (1 << 4)
1171 int x86_emulate_instruction(struct kvm_vcpu
*vcpu
, unsigned long cr2
,
1172 int emulation_type
, void *insn
, int insn_len
);
1174 static inline int emulate_instruction(struct kvm_vcpu
*vcpu
,
1177 return x86_emulate_instruction(vcpu
, 0,
1178 emulation_type
| EMULTYPE_NO_REEXECUTE
, NULL
, 0);
1181 void kvm_enable_efer_bits(u64
);
1182 bool kvm_valid_efer(struct kvm_vcpu
*vcpu
, u64 efer
);
1183 int kvm_get_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1184 int kvm_set_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1186 struct x86_emulate_ctxt
;
1188 int kvm_fast_pio_out(struct kvm_vcpu
*vcpu
, int size
, unsigned short port
);
1189 int kvm_fast_pio_in(struct kvm_vcpu
*vcpu
, int size
, unsigned short port
);
1190 int kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
);
1191 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
);
1192 int kvm_vcpu_halt(struct kvm_vcpu
*vcpu
);
1193 int kvm_emulate_wbinvd(struct kvm_vcpu
*vcpu
);
1195 void kvm_get_segment(struct kvm_vcpu
*vcpu
, struct kvm_segment
*var
, int seg
);
1196 int kvm_load_segment_descriptor(struct kvm_vcpu
*vcpu
, u16 selector
, int seg
);
1197 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu
*vcpu
, u8 vector
);
1199 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int idt_index
,
1200 int reason
, bool has_error_code
, u32 error_code
);
1202 int kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
1203 int kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
1204 int kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
1205 int kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
1206 int kvm_set_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long val
);
1207 int kvm_get_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long *val
);
1208 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
);
1209 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
);
1210 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
1211 int kvm_set_xcr(struct kvm_vcpu
*vcpu
, u32 index
, u64 xcr
);
1213 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1214 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1216 unsigned long kvm_get_rflags(struct kvm_vcpu
*vcpu
);
1217 void kvm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
1218 bool kvm_rdpmc(struct kvm_vcpu
*vcpu
);
1220 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
1221 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
1222 void kvm_requeue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
1223 void kvm_requeue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
1224 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
1225 int kvm_read_guest_page_mmu(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
,
1226 gfn_t gfn
, void *data
, int offset
, int len
,
1228 bool kvm_require_cpl(struct kvm_vcpu
*vcpu
, int required_cpl
);
1229 bool kvm_require_dr(struct kvm_vcpu
*vcpu
, int dr
);
1231 static inline int __kvm_irq_line_state(unsigned long *irq_state
,
1232 int irq_source_id
, int level
)
1234 /* Logical OR for level trig interrupt */
1236 __set_bit(irq_source_id
, irq_state
);
1238 __clear_bit(irq_source_id
, irq_state
);
1240 return !!(*irq_state
);
1243 int kvm_pic_set_irq(struct kvm_pic
*pic
, int irq
, int irq_source_id
, int level
);
1244 void kvm_pic_clear_all(struct kvm_pic
*pic
, int irq_source_id
);
1246 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
);
1248 int kvm_mmu_unprotect_page(struct kvm
*kvm
, gfn_t gfn
);
1249 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
*vcpu
, gva_t gva
);
1250 void __kvm_mmu_free_some_pages(struct kvm_vcpu
*vcpu
);
1251 int kvm_mmu_load(struct kvm_vcpu
*vcpu
);
1252 void kvm_mmu_unload(struct kvm_vcpu
*vcpu
);
1253 void kvm_mmu_sync_roots(struct kvm_vcpu
*vcpu
);
1254 gpa_t
translate_nested_gpa(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
1255 struct x86_exception
*exception
);
1256 gpa_t
kvm_mmu_gva_to_gpa_read(struct kvm_vcpu
*vcpu
, gva_t gva
,
1257 struct x86_exception
*exception
);
1258 gpa_t
kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu
*vcpu
, gva_t gva
,
1259 struct x86_exception
*exception
);
1260 gpa_t
kvm_mmu_gva_to_gpa_write(struct kvm_vcpu
*vcpu
, gva_t gva
,
1261 struct x86_exception
*exception
);
1262 gpa_t
kvm_mmu_gva_to_gpa_system(struct kvm_vcpu
*vcpu
, gva_t gva
,
1263 struct x86_exception
*exception
);
1265 void kvm_vcpu_deactivate_apicv(struct kvm_vcpu
*vcpu
);
1267 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
);
1269 int kvm_mmu_page_fault(struct kvm_vcpu
*vcpu
, gva_t gva
, u64 error_code
,
1270 void *insn
, int insn_len
);
1271 void kvm_mmu_invlpg(struct kvm_vcpu
*vcpu
, gva_t gva
);
1272 void kvm_mmu_new_cr3(struct kvm_vcpu
*vcpu
);
1274 void kvm_enable_tdp(void);
1275 void kvm_disable_tdp(void);
1277 static inline gpa_t
translate_gpa(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
1278 struct x86_exception
*exception
)
1283 static inline struct kvm_mmu_page
*page_header(hpa_t shadow_page
)
1285 struct page
*page
= pfn_to_page(shadow_page
>> PAGE_SHIFT
);
1287 return (struct kvm_mmu_page
*)page_private(page
);
1290 static inline u16
kvm_read_ldt(void)
1293 asm("sldt %0" : "=g"(ldt
));
1297 static inline void kvm_load_ldt(u16 sel
)
1299 asm("lldt %0" : : "rm"(sel
));
1302 #ifdef CONFIG_X86_64
1303 static inline unsigned long read_msr(unsigned long msr
)
1312 static inline u32
get_rdx_init_val(void)
1314 return 0x600; /* P6 family */
1317 static inline void kvm_inject_gp(struct kvm_vcpu
*vcpu
, u32 error_code
)
1319 kvm_queue_exception_e(vcpu
, GP_VECTOR
, error_code
);
1322 #define TSS_IOPB_BASE_OFFSET 0x66
1323 #define TSS_BASE_SIZE 0x68
1324 #define TSS_IOPB_SIZE (65536 / 8)
1325 #define TSS_REDIRECTION_SIZE (256 / 8)
1326 #define RMODE_TSS_SIZE \
1327 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
1330 TASK_SWITCH_CALL
= 0,
1331 TASK_SWITCH_IRET
= 1,
1332 TASK_SWITCH_JMP
= 2,
1333 TASK_SWITCH_GATE
= 3,
1336 #define HF_GIF_MASK (1 << 0)
1337 #define HF_HIF_MASK (1 << 1)
1338 #define HF_VINTR_MASK (1 << 2)
1339 #define HF_NMI_MASK (1 << 3)
1340 #define HF_IRET_MASK (1 << 4)
1341 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
1342 #define HF_SMM_MASK (1 << 6)
1343 #define HF_SMM_INSIDE_NMI_MASK (1 << 7)
1345 #define __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
1346 #define KVM_ADDRESS_SPACE_NUM 2
1348 #define kvm_arch_vcpu_memslots_id(vcpu) ((vcpu)->arch.hflags & HF_SMM_MASK ? 1 : 0)
1349 #define kvm_memslots_for_spte_role(kvm, role) __kvm_memslots(kvm, (role).smm)
1352 * Hardware virtualization extension instructions may fault if a
1353 * reboot turns off virtualization while processes are running.
1354 * Trap the fault and ignore the instruction if that happens.
1356 asmlinkage
void kvm_spurious_fault(void);
1358 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
1359 "666: " insn "\n\t" \
1361 ".pushsection .fixup, \"ax\" \n" \
1363 cleanup_insn "\n\t" \
1364 "cmpb $0, kvm_rebooting \n\t" \
1366 __ASM_SIZE(push) " $666b \n\t" \
1367 "call kvm_spurious_fault \n\t" \
1368 ".popsection \n\t" \
1369 _ASM_EXTABLE(666b, 667b)
1371 #define __kvm_handle_fault_on_reboot(insn) \
1372 ____kvm_handle_fault_on_reboot(insn, "")
1374 #define KVM_ARCH_WANT_MMU_NOTIFIER
1375 int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
1376 int kvm_unmap_hva_range(struct kvm
*kvm
, unsigned long start
, unsigned long end
);
1377 int kvm_age_hva(struct kvm
*kvm
, unsigned long start
, unsigned long end
);
1378 int kvm_test_age_hva(struct kvm
*kvm
, unsigned long hva
);
1379 void kvm_set_spte_hva(struct kvm
*kvm
, unsigned long hva
, pte_t pte
);
1380 int kvm_cpu_has_injectable_intr(struct kvm_vcpu
*v
);
1381 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
);
1382 int kvm_arch_interrupt_allowed(struct kvm_vcpu
*vcpu
);
1383 int kvm_cpu_get_interrupt(struct kvm_vcpu
*v
);
1384 void kvm_vcpu_reset(struct kvm_vcpu
*vcpu
, bool init_event
);
1385 void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu
*vcpu
);
1387 void kvm_define_shared_msr(unsigned index
, u32 msr
);
1388 int kvm_set_shared_msr(unsigned index
, u64 val
, u64 mask
);
1390 u64
kvm_scale_tsc(struct kvm_vcpu
*vcpu
, u64 tsc
);
1391 u64
kvm_read_l1_tsc(struct kvm_vcpu
*vcpu
, u64 host_tsc
);
1393 unsigned long kvm_get_linear_rip(struct kvm_vcpu
*vcpu
);
1394 bool kvm_is_linear_rip(struct kvm_vcpu
*vcpu
, unsigned long linear_rip
);
1396 void kvm_make_mclock_inprogress_request(struct kvm
*kvm
);
1397 void kvm_make_scan_ioapic_request(struct kvm
*kvm
);
1399 void kvm_arch_async_page_not_present(struct kvm_vcpu
*vcpu
,
1400 struct kvm_async_pf
*work
);
1401 void kvm_arch_async_page_present(struct kvm_vcpu
*vcpu
,
1402 struct kvm_async_pf
*work
);
1403 void kvm_arch_async_page_ready(struct kvm_vcpu
*vcpu
,
1404 struct kvm_async_pf
*work
);
1405 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu
*vcpu
);
1406 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
1408 int kvm_skip_emulated_instruction(struct kvm_vcpu
*vcpu
);
1409 int kvm_complete_insn_gp(struct kvm_vcpu
*vcpu
, int err
);
1411 int kvm_is_in_guest(void);
1413 int __x86_set_memory_region(struct kvm
*kvm
, int id
, gpa_t gpa
, u32 size
);
1414 int x86_set_memory_region(struct kvm
*kvm
, int id
, gpa_t gpa
, u32 size
);
1415 bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu
*vcpu
);
1416 bool kvm_vcpu_is_bsp(struct kvm_vcpu
*vcpu
);
1418 bool kvm_intr_is_single_vcpu(struct kvm
*kvm
, struct kvm_lapic_irq
*irq
,
1419 struct kvm_vcpu
**dest_vcpu
);
1421 void kvm_set_msi_irq(struct kvm
*kvm
, struct kvm_kernel_irq_routing_entry
*e
,
1422 struct kvm_lapic_irq
*irq
);
1424 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu
*vcpu
)
1426 if (kvm_x86_ops
->vcpu_blocking
)
1427 kvm_x86_ops
->vcpu_blocking(vcpu
);
1430 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu
*vcpu
)
1432 if (kvm_x86_ops
->vcpu_unblocking
)
1433 kvm_x86_ops
->vcpu_unblocking(vcpu
);
1436 static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu
*vcpu
) {}
1438 static inline int kvm_cpu_get_apicid(int mps_cpu
)
1440 #ifdef CONFIG_X86_LOCAL_APIC
1441 return default_cpu_present_to_apicid(mps_cpu
);
1448 #define put_smstate(type, buf, offset, val) \
1449 *(type *)((buf) + (offset) - 0x7e00) = val
1451 void kvm_arch_mmu_notifier_invalidate_range(struct kvm
*kvm
,
1452 unsigned long start
, unsigned long end
);
1454 #endif /* _ASM_X86_KVM_HOST_H */