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
43 #define KVM_HALT_POLL_NS_DEFAULT 500000
45 #define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS
47 #define CR0_RESERVED_BITS \
48 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
49 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
50 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
52 #define CR3_L_MODE_RESERVED_BITS 0xFFFFFF0000000000ULL
53 #define CR3_PCID_INVD BIT_64(63)
54 #define CR4_RESERVED_BITS \
55 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
56 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
57 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
58 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \
59 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE | X86_CR4_SMAP))
61 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
65 #define INVALID_PAGE (~(hpa_t)0)
66 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
68 #define UNMAPPED_GVA (~(gpa_t)0)
70 /* KVM Hugepage definitions for x86 */
71 #define KVM_NR_PAGE_SIZES 3
72 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
73 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
74 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
75 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
76 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
78 static inline gfn_t
gfn_to_index(gfn_t gfn
, gfn_t base_gfn
, int level
)
80 /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */
81 return (gfn
>> KVM_HPAGE_GFN_SHIFT(level
)) -
82 (base_gfn
>> KVM_HPAGE_GFN_SHIFT(level
));
85 #define KVM_PERMILLE_MMU_PAGES 20
86 #define KVM_MIN_ALLOC_MMU_PAGES 64
87 #define KVM_MMU_HASH_SHIFT 10
88 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
89 #define KVM_MIN_FREE_MMU_PAGES 5
90 #define KVM_REFILL_PAGES 25
91 #define KVM_MAX_CPUID_ENTRIES 80
92 #define KVM_NR_FIXED_MTRR_REGION 88
93 #define KVM_NR_VAR_MTRR 8
95 #define ASYNC_PF_PER_VCPU 64
121 VCPU_EXREG_PDPTR
= NR_VCPU_REGS
,
138 #include <asm/kvm_emulate.h>
140 #define KVM_NR_MEM_OBJS 40
142 #define KVM_NR_DB_REGS 4
144 #define DR6_BD (1 << 13)
145 #define DR6_BS (1 << 14)
146 #define DR6_RTM (1 << 16)
147 #define DR6_FIXED_1 0xfffe0ff0
148 #define DR6_INIT 0xffff0ff0
149 #define DR6_VOLATILE 0x0001e00f
151 #define DR7_BP_EN_MASK 0x000000ff
152 #define DR7_GE (1 << 9)
153 #define DR7_GD (1 << 13)
154 #define DR7_FIXED_1 0x00000400
155 #define DR7_VOLATILE 0xffff2bff
157 #define PFERR_PRESENT_BIT 0
158 #define PFERR_WRITE_BIT 1
159 #define PFERR_USER_BIT 2
160 #define PFERR_RSVD_BIT 3
161 #define PFERR_FETCH_BIT 4
163 #define PFERR_PRESENT_MASK (1U << PFERR_PRESENT_BIT)
164 #define PFERR_WRITE_MASK (1U << PFERR_WRITE_BIT)
165 #define PFERR_USER_MASK (1U << PFERR_USER_BIT)
166 #define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT)
167 #define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT)
169 /* apic attention bits */
170 #define KVM_APIC_CHECK_VAPIC 0
172 * The following bit is set with PV-EOI, unset on EOI.
173 * We detect PV-EOI changes by guest by comparing
174 * this bit with PV-EOI in guest memory.
175 * See the implementation in apic_update_pv_eoi.
177 #define KVM_APIC_PV_EOI_PENDING 1
180 * We don't want allocation failures within the mmu code, so we preallocate
181 * enough memory for a single page fault in a cache.
183 struct kvm_mmu_memory_cache
{
185 void *objects
[KVM_NR_MEM_OBJS
];
188 union kvm_mmu_page_role
{
199 unsigned smep_andnot_wp
:1;
200 unsigned smap_andnot_wp
:1;
204 * This is left at the top of the word so that
205 * kvm_memslots_for_spte_role can extract it with a
206 * simple shift. While there is room, give it a whole
207 * byte so it is also faster to load it from memory.
213 struct kvm_mmu_page
{
214 struct list_head link
;
215 struct hlist_node hash_link
;
218 * The following two entries are used to key the shadow page in the
222 union kvm_mmu_page_role role
;
225 /* hold the gfn of each spte inside spt */
228 int root_count
; /* Currently serving as active root */
229 unsigned int unsync_children
;
230 unsigned long parent_ptes
; /* Reverse mapping for parent_pte */
232 /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */
233 unsigned long mmu_valid_gen
;
235 DECLARE_BITMAP(unsync_child_bitmap
, 512);
239 * Used out of the mmu-lock to avoid reading spte values while an
240 * update is in progress; see the comments in __get_spte_lockless().
242 int clear_spte_count
;
245 /* Number of writes since the last time traversal visited this page. */
246 int write_flooding_count
;
249 struct kvm_pio_request
{
256 struct rsvd_bits_validate
{
257 u64 rsvd_bits_mask
[2][4];
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
300 * check zero bits on shadow page table entries, these
301 * bits include not only hardware reserved bits but also
302 * the bits spte never used.
304 struct rsvd_bits_validate shadow_zero_check
;
306 struct rsvd_bits_validate guest_rsvd_check
;
309 * Bitmap: bit set = last pte in walk
310 * index[0:1]: level (zero-based)
317 u64 pdptrs
[4]; /* pae */
330 struct perf_event
*perf_event
;
331 struct kvm_vcpu
*vcpu
;
335 unsigned nr_arch_gp_counters
;
336 unsigned nr_arch_fixed_counters
;
337 unsigned available_event_types
;
342 u64 counter_bitmask
[2];
343 u64 global_ctrl_mask
;
346 struct kvm_pmc gp_counters
[INTEL_PMC_MAX_GENERIC
];
347 struct kvm_pmc fixed_counters
[INTEL_PMC_MAX_FIXED
];
348 struct irq_work irq_work
;
355 KVM_DEBUGREG_BP_ENABLED
= 1,
356 KVM_DEBUGREG_WONT_EXIT
= 2,
357 KVM_DEBUGREG_RELOAD
= 4,
360 struct kvm_mtrr_range
{
363 struct list_head node
;
367 struct kvm_mtrr_range var_ranges
[KVM_NR_VAR_MTRR
];
368 mtrr_type fixed_ranges
[KVM_NR_FIXED_MTRR_REGION
];
371 struct list_head head
;
374 /* Hyper-V per vcpu emulation context */
380 struct kvm_vcpu_arch
{
382 * rip and regs accesses must go through
383 * kvm_{register,rip}_{read,write} functions.
385 unsigned long regs
[NR_VCPU_REGS
];
390 unsigned long cr0_guest_owned_bits
;
394 unsigned long cr4_guest_owned_bits
;
399 struct kvm_lapic
*apic
; /* kernel irqchip context */
400 u64 eoi_exit_bitmap
[4];
401 unsigned long apic_attention
;
402 int32_t apic_arb_prio
;
404 u64 ia32_misc_enable_msr
;
406 bool tpr_access_reporting
;
410 * Paging state of the vcpu
412 * If the vcpu runs in guest mode with two level paging this still saves
413 * the paging mode of the l1 guest. This context is always used to
419 * Paging state of an L2 guest (used for nested npt)
421 * This context will save all necessary information to walk page tables
422 * of the an L2 guest. This context is only initialized for page table
423 * walking and not for faulting since we never handle l2 page faults on
426 struct kvm_mmu nested_mmu
;
429 * Pointer to the mmu context currently used for
430 * gva_to_gpa translations.
432 struct kvm_mmu
*walk_mmu
;
434 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache
;
435 struct kvm_mmu_memory_cache mmu_page_cache
;
436 struct kvm_mmu_memory_cache mmu_page_header_cache
;
438 struct fpu guest_fpu
;
441 u64 guest_supported_xcr0
;
442 u32 guest_xstate_size
;
444 struct kvm_pio_request pio
;
447 u8 event_exit_inst_len
;
449 struct kvm_queued_exception
{
457 struct kvm_queued_interrupt
{
463 int halt_request
; /* real mode on Intel only */
466 struct kvm_cpuid_entry2 cpuid_entries
[KVM_MAX_CPUID_ENTRIES
];
470 /* emulate context */
472 struct x86_emulate_ctxt emulate_ctxt
;
473 bool emulate_regs_need_sync_to_vcpu
;
474 bool emulate_regs_need_sync_from_vcpu
;
475 int (*complete_userspace_io
)(struct kvm_vcpu
*vcpu
);
478 struct pvclock_vcpu_time_info hv_clock
;
479 unsigned int hw_tsc_khz
;
480 struct gfn_to_hva_cache pv_time
;
481 bool pv_time_enabled
;
482 /* set guest stopped flag in pvclock flags field */
483 bool pvclock_set_guest_stopped_request
;
489 struct gfn_to_hva_cache stime
;
490 struct kvm_steal_time steal
;
495 u64 tsc_offset_adjustment
;
498 u64 this_tsc_generation
;
500 bool tsc_always_catchup
;
501 s8 virtual_tsc_shift
;
502 u32 virtual_tsc_mult
;
504 s64 ia32_tsc_adjust_msr
;
506 atomic_t nmi_queued
; /* unprocessed asynchronous NMIs */
507 unsigned nmi_pending
; /* NMI queued after currently running handler */
508 bool nmi_injected
; /* Trying to inject an NMI this entry */
509 bool smi_pending
; /* SMI queued after currently running handler */
511 struct kvm_mtrr mtrr_state
;
514 unsigned switch_db_regs
;
515 unsigned long db
[KVM_NR_DB_REGS
];
518 unsigned long eff_db
[KVM_NR_DB_REGS
];
519 unsigned long guest_debug_dr7
;
526 /* Cache MMIO info */
534 /* used for guest single stepping over the given code position */
535 unsigned long singlestep_rip
;
537 struct kvm_vcpu_hv hyperv
;
539 cpumask_var_t wbinvd_dirty_mask
;
541 unsigned long last_retry_eip
;
542 unsigned long last_retry_addr
;
546 gfn_t gfns
[roundup_pow_of_two(ASYNC_PF_PER_VCPU
)];
547 struct gfn_to_hva_cache data
;
553 /* OSVW MSRs (AMD only) */
561 struct gfn_to_hva_cache data
;
565 * Indicate whether the access faults on its page table in guest
566 * which is set when fix page fault and used to detect unhandeable
569 bool write_fault_to_shadow_pgtable
;
571 /* set at EPT violation at this point */
572 unsigned long exit_qualification
;
574 /* pv related host specific info */
579 int pending_ioapic_eoi
;
580 int pending_external_vector
;
583 struct kvm_lpage_info
{
587 struct kvm_arch_memory_slot
{
588 unsigned long *rmap
[KVM_NR_PAGE_SIZES
];
589 struct kvm_lpage_info
*lpage_info
[KVM_NR_PAGE_SIZES
- 1];
593 * We use as the mode the number of bits allocated in the LDR for the
594 * logical processor ID. It happens that these are all powers of two.
595 * This makes it is very easy to detect cases where the APICs are
596 * configured for multiple modes; in that case, we cannot use the map and
597 * hence cannot use kvm_irq_delivery_to_apic_fast either.
599 #define KVM_APIC_MODE_XAPIC_CLUSTER 4
600 #define KVM_APIC_MODE_XAPIC_FLAT 8
601 #define KVM_APIC_MODE_X2APIC 16
603 struct kvm_apic_map
{
606 struct kvm_lapic
*phys_map
[256];
607 /* first index is cluster id second is cpu id in a cluster */
608 struct kvm_lapic
*logical_map
[16][16];
611 /* Hyper-V emulation context */
617 /* Hyper-v based guest crash (NT kernel bugcheck) parameters */
618 u64 hv_crash_param
[HV_X64_MSR_CRASH_PARAMS
];
623 unsigned int n_used_mmu_pages
;
624 unsigned int n_requested_mmu_pages
;
625 unsigned int n_max_mmu_pages
;
626 unsigned int indirect_shadow_pages
;
627 unsigned long mmu_valid_gen
;
628 struct hlist_head mmu_page_hash
[KVM_NUM_MMU_PAGES
];
630 * Hash table of struct kvm_mmu_page.
632 struct list_head active_mmu_pages
;
633 struct list_head zapped_obsolete_pages
;
635 struct list_head assigned_dev_head
;
636 struct iommu_domain
*iommu_domain
;
637 bool iommu_noncoherent
;
638 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA
639 atomic_t noncoherent_dma_count
;
640 #define __KVM_HAVE_ARCH_ASSIGNED_DEVICE
641 atomic_t assigned_device_count
;
642 struct kvm_pic
*vpic
;
643 struct kvm_ioapic
*vioapic
;
644 struct kvm_pit
*vpit
;
645 atomic_t vapics_in_nmi_mode
;
646 struct mutex apic_map_lock
;
647 struct kvm_apic_map
*apic_map
;
649 unsigned int tss_addr
;
650 bool apic_access_page_done
;
654 bool ept_identity_pagetable_done
;
655 gpa_t ept_identity_map_addr
;
657 unsigned long irq_sources_bitmap
;
659 raw_spinlock_t tsc_write_lock
;
666 u64 cur_tsc_generation
;
667 int nr_vcpus_matched_tsc
;
669 spinlock_t pvclock_gtod_sync_lock
;
670 bool use_master_clock
;
671 u64 master_kernel_ns
;
672 cycle_t master_cycle_now
;
673 struct delayed_work kvmclock_update_work
;
674 struct delayed_work kvmclock_sync_work
;
676 struct kvm_xen_hvm_config xen_hvm_config
;
678 /* reads protected by irq_srcu, writes by irq_lock */
679 struct hlist_head mask_notifier_list
;
681 struct kvm_hv hyperv
;
683 #ifdef CONFIG_KVM_MMU_AUDIT
687 bool boot_vcpu_runs_old_kvmclock
;
693 u8 nr_reserved_ioapic_pins
;
697 u32 mmu_shadow_zapped
;
705 u32 remote_tlb_flush
;
709 struct kvm_vcpu_stat
{
719 u32 irq_window_exits
;
720 u32 nmi_window_exits
;
722 u32 halt_successful_poll
;
723 u32 halt_attempted_poll
;
725 u32 request_irq_exits
;
727 u32 host_state_reload
;
731 u32 insn_emulation_fail
;
737 struct x86_instruction_info
;
745 struct kvm_lapic_irq
{
757 int (*cpu_has_kvm_support
)(void); /* __init */
758 int (*disabled_by_bios
)(void); /* __init */
759 int (*hardware_enable
)(void);
760 void (*hardware_disable
)(void);
761 void (*check_processor_compatibility
)(void *rtn
);
762 int (*hardware_setup
)(void); /* __init */
763 void (*hardware_unsetup
)(void); /* __exit */
764 bool (*cpu_has_accelerated_tpr
)(void);
765 bool (*cpu_has_high_real_mode_segbase
)(void);
766 void (*cpuid_update
)(struct kvm_vcpu
*vcpu
);
768 /* Create, but do not attach this VCPU */
769 struct kvm_vcpu
*(*vcpu_create
)(struct kvm
*kvm
, unsigned id
);
770 void (*vcpu_free
)(struct kvm_vcpu
*vcpu
);
771 void (*vcpu_reset
)(struct kvm_vcpu
*vcpu
, bool init_event
);
773 void (*prepare_guest_switch
)(struct kvm_vcpu
*vcpu
);
774 void (*vcpu_load
)(struct kvm_vcpu
*vcpu
, int cpu
);
775 void (*vcpu_put
)(struct kvm_vcpu
*vcpu
);
777 void (*update_db_bp_intercept
)(struct kvm_vcpu
*vcpu
);
778 int (*get_msr
)(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
779 int (*set_msr
)(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
780 u64 (*get_segment_base
)(struct kvm_vcpu
*vcpu
, int seg
);
781 void (*get_segment
)(struct kvm_vcpu
*vcpu
,
782 struct kvm_segment
*var
, int seg
);
783 int (*get_cpl
)(struct kvm_vcpu
*vcpu
);
784 void (*set_segment
)(struct kvm_vcpu
*vcpu
,
785 struct kvm_segment
*var
, int seg
);
786 void (*get_cs_db_l_bits
)(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
787 void (*decache_cr0_guest_bits
)(struct kvm_vcpu
*vcpu
);
788 void (*decache_cr3
)(struct kvm_vcpu
*vcpu
);
789 void (*decache_cr4_guest_bits
)(struct kvm_vcpu
*vcpu
);
790 void (*set_cr0
)(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
791 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
792 int (*set_cr4
)(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
793 void (*set_efer
)(struct kvm_vcpu
*vcpu
, u64 efer
);
794 void (*get_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
795 void (*set_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
796 void (*get_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
797 void (*set_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
798 u64 (*get_dr6
)(struct kvm_vcpu
*vcpu
);
799 void (*set_dr6
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
800 void (*sync_dirty_debug_regs
)(struct kvm_vcpu
*vcpu
);
801 void (*set_dr7
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
802 void (*cache_reg
)(struct kvm_vcpu
*vcpu
, enum kvm_reg reg
);
803 unsigned long (*get_rflags
)(struct kvm_vcpu
*vcpu
);
804 void (*set_rflags
)(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
805 void (*fpu_activate
)(struct kvm_vcpu
*vcpu
);
806 void (*fpu_deactivate
)(struct kvm_vcpu
*vcpu
);
808 void (*tlb_flush
)(struct kvm_vcpu
*vcpu
);
810 void (*run
)(struct kvm_vcpu
*vcpu
);
811 int (*handle_exit
)(struct kvm_vcpu
*vcpu
);
812 void (*skip_emulated_instruction
)(struct kvm_vcpu
*vcpu
);
813 void (*set_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
814 u32 (*get_interrupt_shadow
)(struct kvm_vcpu
*vcpu
);
815 void (*patch_hypercall
)(struct kvm_vcpu
*vcpu
,
816 unsigned char *hypercall_addr
);
817 void (*set_irq
)(struct kvm_vcpu
*vcpu
);
818 void (*set_nmi
)(struct kvm_vcpu
*vcpu
);
819 void (*queue_exception
)(struct kvm_vcpu
*vcpu
, unsigned nr
,
820 bool has_error_code
, u32 error_code
,
822 void (*cancel_injection
)(struct kvm_vcpu
*vcpu
);
823 int (*interrupt_allowed
)(struct kvm_vcpu
*vcpu
);
824 int (*nmi_allowed
)(struct kvm_vcpu
*vcpu
);
825 bool (*get_nmi_mask
)(struct kvm_vcpu
*vcpu
);
826 void (*set_nmi_mask
)(struct kvm_vcpu
*vcpu
, bool masked
);
827 void (*enable_nmi_window
)(struct kvm_vcpu
*vcpu
);
828 void (*enable_irq_window
)(struct kvm_vcpu
*vcpu
);
829 void (*update_cr8_intercept
)(struct kvm_vcpu
*vcpu
, int tpr
, int irr
);
830 int (*cpu_uses_apicv
)(struct kvm_vcpu
*vcpu
);
831 void (*hwapic_irr_update
)(struct kvm_vcpu
*vcpu
, int max_irr
);
832 void (*hwapic_isr_update
)(struct kvm
*kvm
, int isr
);
833 void (*load_eoi_exitmap
)(struct kvm_vcpu
*vcpu
);
834 void (*set_virtual_x2apic_mode
)(struct kvm_vcpu
*vcpu
, bool set
);
835 void (*set_apic_access_page_addr
)(struct kvm_vcpu
*vcpu
, hpa_t hpa
);
836 void (*deliver_posted_interrupt
)(struct kvm_vcpu
*vcpu
, int vector
);
837 void (*sync_pir_to_irr
)(struct kvm_vcpu
*vcpu
);
838 int (*set_tss_addr
)(struct kvm
*kvm
, unsigned int addr
);
839 int (*get_tdp_level
)(void);
840 u64 (*get_mt_mask
)(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool is_mmio
);
841 int (*get_lpage_level
)(void);
842 bool (*rdtscp_supported
)(void);
843 bool (*invpcid_supported
)(void);
844 void (*adjust_tsc_offset
)(struct kvm_vcpu
*vcpu
, s64 adjustment
, bool host
);
846 void (*set_tdp_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
848 void (*set_supported_cpuid
)(u32 func
, struct kvm_cpuid_entry2
*entry
);
850 bool (*has_wbinvd_exit
)(void);
852 void (*set_tsc_khz
)(struct kvm_vcpu
*vcpu
, u32 user_tsc_khz
, bool scale
);
853 u64 (*read_tsc_offset
)(struct kvm_vcpu
*vcpu
);
854 void (*write_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 offset
);
856 u64 (*compute_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 target_tsc
);
857 u64 (*read_l1_tsc
)(struct kvm_vcpu
*vcpu
, u64 host_tsc
);
859 void (*get_exit_info
)(struct kvm_vcpu
*vcpu
, u64
*info1
, u64
*info2
);
861 int (*check_intercept
)(struct kvm_vcpu
*vcpu
,
862 struct x86_instruction_info
*info
,
863 enum x86_intercept_stage stage
);
864 void (*handle_external_intr
)(struct kvm_vcpu
*vcpu
);
865 bool (*mpx_supported
)(void);
866 bool (*xsaves_supported
)(void);
868 int (*check_nested_events
)(struct kvm_vcpu
*vcpu
, bool external_intr
);
870 void (*sched_in
)(struct kvm_vcpu
*kvm
, int cpu
);
873 * Arch-specific dirty logging hooks. These hooks are only supposed to
874 * be valid if the specific arch has hardware-accelerated dirty logging
875 * mechanism. Currently only for PML on VMX.
877 * - slot_enable_log_dirty:
878 * called when enabling log dirty mode for the slot.
879 * - slot_disable_log_dirty:
880 * called when disabling log dirty mode for the slot.
881 * also called when slot is created with log dirty disabled.
883 * called before reporting dirty_bitmap to userspace.
884 * - enable_log_dirty_pt_masked:
885 * called when reenabling log dirty for the GFNs in the mask after
886 * corresponding bits are cleared in slot->dirty_bitmap.
888 void (*slot_enable_log_dirty
)(struct kvm
*kvm
,
889 struct kvm_memory_slot
*slot
);
890 void (*slot_disable_log_dirty
)(struct kvm
*kvm
,
891 struct kvm_memory_slot
*slot
);
892 void (*flush_log_dirty
)(struct kvm
*kvm
);
893 void (*enable_log_dirty_pt_masked
)(struct kvm
*kvm
,
894 struct kvm_memory_slot
*slot
,
895 gfn_t offset
, unsigned long mask
);
896 /* pmu operations of sub-arch */
897 const struct kvm_pmu_ops
*pmu_ops
;
900 struct kvm_arch_async_pf
{
907 extern struct kvm_x86_ops
*kvm_x86_ops
;
909 static inline void adjust_tsc_offset_guest(struct kvm_vcpu
*vcpu
,
912 kvm_x86_ops
->adjust_tsc_offset(vcpu
, adjustment
, false);
915 static inline void adjust_tsc_offset_host(struct kvm_vcpu
*vcpu
, s64 adjustment
)
917 kvm_x86_ops
->adjust_tsc_offset(vcpu
, adjustment
, true);
920 int kvm_mmu_module_init(void);
921 void kvm_mmu_module_exit(void);
923 void kvm_mmu_destroy(struct kvm_vcpu
*vcpu
);
924 int kvm_mmu_create(struct kvm_vcpu
*vcpu
);
925 void kvm_mmu_setup(struct kvm_vcpu
*vcpu
);
926 void kvm_mmu_set_mask_ptes(u64 user_mask
, u64 accessed_mask
,
927 u64 dirty_mask
, u64 nx_mask
, u64 x_mask
);
929 void kvm_mmu_reset_context(struct kvm_vcpu
*vcpu
);
930 void kvm_mmu_slot_remove_write_access(struct kvm
*kvm
,
931 struct kvm_memory_slot
*memslot
);
932 void kvm_mmu_zap_collapsible_sptes(struct kvm
*kvm
,
933 const struct kvm_memory_slot
*memslot
);
934 void kvm_mmu_slot_leaf_clear_dirty(struct kvm
*kvm
,
935 struct kvm_memory_slot
*memslot
);
936 void kvm_mmu_slot_largepage_remove_write_access(struct kvm
*kvm
,
937 struct kvm_memory_slot
*memslot
);
938 void kvm_mmu_slot_set_dirty(struct kvm
*kvm
,
939 struct kvm_memory_slot
*memslot
);
940 void kvm_mmu_clear_dirty_pt_masked(struct kvm
*kvm
,
941 struct kvm_memory_slot
*slot
,
942 gfn_t gfn_offset
, unsigned long mask
);
943 void kvm_mmu_zap_all(struct kvm
*kvm
);
944 void kvm_mmu_invalidate_mmio_sptes(struct kvm
*kvm
, struct kvm_memslots
*slots
);
945 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm
*kvm
);
946 void kvm_mmu_change_mmu_pages(struct kvm
*kvm
, unsigned int kvm_nr_mmu_pages
);
948 int load_pdptrs(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
, unsigned long cr3
);
950 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
951 const void *val
, int bytes
);
953 struct kvm_irq_mask_notifier
{
954 void (*func
)(struct kvm_irq_mask_notifier
*kimn
, bool masked
);
956 struct hlist_node link
;
959 void kvm_register_irq_mask_notifier(struct kvm
*kvm
, int irq
,
960 struct kvm_irq_mask_notifier
*kimn
);
961 void kvm_unregister_irq_mask_notifier(struct kvm
*kvm
, int irq
,
962 struct kvm_irq_mask_notifier
*kimn
);
963 void kvm_fire_mask_notifiers(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
,
966 extern bool tdp_enabled
;
968 u64
vcpu_tsc_khz(struct kvm_vcpu
*vcpu
);
970 /* control of guest tsc rate supported? */
971 extern bool kvm_has_tsc_control
;
972 /* minimum supported tsc_khz for guests */
973 extern u32 kvm_min_guest_tsc_khz
;
974 /* maximum supported tsc_khz for guests */
975 extern u32 kvm_max_guest_tsc_khz
;
977 enum emulation_result
{
978 EMULATE_DONE
, /* no further processing */
979 EMULATE_USER_EXIT
, /* kvm_run ready for userspace exit */
980 EMULATE_FAIL
, /* can't emulate this instruction */
983 #define EMULTYPE_NO_DECODE (1 << 0)
984 #define EMULTYPE_TRAP_UD (1 << 1)
985 #define EMULTYPE_SKIP (1 << 2)
986 #define EMULTYPE_RETRY (1 << 3)
987 #define EMULTYPE_NO_REEXECUTE (1 << 4)
988 int x86_emulate_instruction(struct kvm_vcpu
*vcpu
, unsigned long cr2
,
989 int emulation_type
, void *insn
, int insn_len
);
991 static inline int emulate_instruction(struct kvm_vcpu
*vcpu
,
994 return x86_emulate_instruction(vcpu
, 0, emulation_type
, NULL
, 0);
997 void kvm_enable_efer_bits(u64
);
998 bool kvm_valid_efer(struct kvm_vcpu
*vcpu
, u64 efer
);
999 int kvm_get_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1000 int kvm_set_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1002 struct x86_emulate_ctxt
;
1004 int kvm_fast_pio_out(struct kvm_vcpu
*vcpu
, int size
, unsigned short port
);
1005 void kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
);
1006 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
);
1007 int kvm_vcpu_halt(struct kvm_vcpu
*vcpu
);
1008 int kvm_emulate_wbinvd(struct kvm_vcpu
*vcpu
);
1010 void kvm_get_segment(struct kvm_vcpu
*vcpu
, struct kvm_segment
*var
, int seg
);
1011 int kvm_load_segment_descriptor(struct kvm_vcpu
*vcpu
, u16 selector
, int seg
);
1012 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu
*vcpu
, u8 vector
);
1014 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int idt_index
,
1015 int reason
, bool has_error_code
, u32 error_code
);
1017 int kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
1018 int kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
1019 int kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
1020 int kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
1021 int kvm_set_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long val
);
1022 int kvm_get_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long *val
);
1023 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
);
1024 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
);
1025 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
1026 int kvm_set_xcr(struct kvm_vcpu
*vcpu
, u32 index
, u64 xcr
);
1028 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1029 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1031 unsigned long kvm_get_rflags(struct kvm_vcpu
*vcpu
);
1032 void kvm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
1033 bool kvm_rdpmc(struct kvm_vcpu
*vcpu
);
1035 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
1036 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
1037 void kvm_requeue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
1038 void kvm_requeue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
1039 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
1040 int kvm_read_guest_page_mmu(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
,
1041 gfn_t gfn
, void *data
, int offset
, int len
,
1043 bool kvm_require_cpl(struct kvm_vcpu
*vcpu
, int required_cpl
);
1044 bool kvm_require_dr(struct kvm_vcpu
*vcpu
, int dr
);
1046 static inline int __kvm_irq_line_state(unsigned long *irq_state
,
1047 int irq_source_id
, int level
)
1049 /* Logical OR for level trig interrupt */
1051 __set_bit(irq_source_id
, irq_state
);
1053 __clear_bit(irq_source_id
, irq_state
);
1055 return !!(*irq_state
);
1058 int kvm_pic_set_irq(struct kvm_pic
*pic
, int irq
, int irq_source_id
, int level
);
1059 void kvm_pic_clear_all(struct kvm_pic
*pic
, int irq_source_id
);
1061 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
);
1063 void kvm_mmu_pte_write(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
1064 const u8
*new, int bytes
);
1065 int kvm_mmu_unprotect_page(struct kvm
*kvm
, gfn_t gfn
);
1066 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
*vcpu
, gva_t gva
);
1067 void __kvm_mmu_free_some_pages(struct kvm_vcpu
*vcpu
);
1068 int kvm_mmu_load(struct kvm_vcpu
*vcpu
);
1069 void kvm_mmu_unload(struct kvm_vcpu
*vcpu
);
1070 void kvm_mmu_sync_roots(struct kvm_vcpu
*vcpu
);
1071 gpa_t
translate_nested_gpa(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
1072 struct x86_exception
*exception
);
1073 gpa_t
kvm_mmu_gva_to_gpa_read(struct kvm_vcpu
*vcpu
, gva_t gva
,
1074 struct x86_exception
*exception
);
1075 gpa_t
kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu
*vcpu
, gva_t gva
,
1076 struct x86_exception
*exception
);
1077 gpa_t
kvm_mmu_gva_to_gpa_write(struct kvm_vcpu
*vcpu
, gva_t gva
,
1078 struct x86_exception
*exception
);
1079 gpa_t
kvm_mmu_gva_to_gpa_system(struct kvm_vcpu
*vcpu
, gva_t gva
,
1080 struct x86_exception
*exception
);
1082 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
);
1084 int kvm_mmu_page_fault(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 error_code
,
1085 void *insn
, int insn_len
);
1086 void kvm_mmu_invlpg(struct kvm_vcpu
*vcpu
, gva_t gva
);
1087 void kvm_mmu_new_cr3(struct kvm_vcpu
*vcpu
);
1089 void kvm_enable_tdp(void);
1090 void kvm_disable_tdp(void);
1092 static inline gpa_t
translate_gpa(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
1093 struct x86_exception
*exception
)
1098 static inline struct kvm_mmu_page
*page_header(hpa_t shadow_page
)
1100 struct page
*page
= pfn_to_page(shadow_page
>> PAGE_SHIFT
);
1102 return (struct kvm_mmu_page
*)page_private(page
);
1105 static inline u16
kvm_read_ldt(void)
1108 asm("sldt %0" : "=g"(ldt
));
1112 static inline void kvm_load_ldt(u16 sel
)
1114 asm("lldt %0" : : "rm"(sel
));
1117 #ifdef CONFIG_X86_64
1118 static inline unsigned long read_msr(unsigned long msr
)
1127 static inline u32
get_rdx_init_val(void)
1129 return 0x600; /* P6 family */
1132 static inline void kvm_inject_gp(struct kvm_vcpu
*vcpu
, u32 error_code
)
1134 kvm_queue_exception_e(vcpu
, GP_VECTOR
, error_code
);
1137 static inline u64
get_canonical(u64 la
)
1139 return ((int64_t)la
<< 16) >> 16;
1142 static inline bool is_noncanonical_address(u64 la
)
1144 #ifdef CONFIG_X86_64
1145 return get_canonical(la
) != la
;
1151 #define TSS_IOPB_BASE_OFFSET 0x66
1152 #define TSS_BASE_SIZE 0x68
1153 #define TSS_IOPB_SIZE (65536 / 8)
1154 #define TSS_REDIRECTION_SIZE (256 / 8)
1155 #define RMODE_TSS_SIZE \
1156 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
1159 TASK_SWITCH_CALL
= 0,
1160 TASK_SWITCH_IRET
= 1,
1161 TASK_SWITCH_JMP
= 2,
1162 TASK_SWITCH_GATE
= 3,
1165 #define HF_GIF_MASK (1 << 0)
1166 #define HF_HIF_MASK (1 << 1)
1167 #define HF_VINTR_MASK (1 << 2)
1168 #define HF_NMI_MASK (1 << 3)
1169 #define HF_IRET_MASK (1 << 4)
1170 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
1171 #define HF_SMM_MASK (1 << 6)
1172 #define HF_SMM_INSIDE_NMI_MASK (1 << 7)
1174 #define __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
1175 #define KVM_ADDRESS_SPACE_NUM 2
1177 #define kvm_arch_vcpu_memslots_id(vcpu) ((vcpu)->arch.hflags & HF_SMM_MASK ? 1 : 0)
1178 #define kvm_memslots_for_spte_role(kvm, role) __kvm_memslots(kvm, (role).smm)
1181 * Hardware virtualization extension instructions may fault if a
1182 * reboot turns off virtualization while processes are running.
1183 * Trap the fault and ignore the instruction if that happens.
1185 asmlinkage
void kvm_spurious_fault(void);
1187 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
1188 "666: " insn "\n\t" \
1190 ".pushsection .fixup, \"ax\" \n" \
1192 cleanup_insn "\n\t" \
1193 "cmpb $0, kvm_rebooting \n\t" \
1195 __ASM_SIZE(push) " $666b \n\t" \
1196 "call kvm_spurious_fault \n\t" \
1197 ".popsection \n\t" \
1198 _ASM_EXTABLE(666b, 667b)
1200 #define __kvm_handle_fault_on_reboot(insn) \
1201 ____kvm_handle_fault_on_reboot(insn, "")
1203 #define KVM_ARCH_WANT_MMU_NOTIFIER
1204 int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
1205 int kvm_unmap_hva_range(struct kvm
*kvm
, unsigned long start
, unsigned long end
);
1206 int kvm_age_hva(struct kvm
*kvm
, unsigned long start
, unsigned long end
);
1207 int kvm_test_age_hva(struct kvm
*kvm
, unsigned long hva
);
1208 void kvm_set_spte_hva(struct kvm
*kvm
, unsigned long hva
, pte_t pte
);
1209 int kvm_cpu_has_injectable_intr(struct kvm_vcpu
*v
);
1210 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
);
1211 int kvm_arch_interrupt_allowed(struct kvm_vcpu
*vcpu
);
1212 int kvm_cpu_get_interrupt(struct kvm_vcpu
*v
);
1213 void kvm_vcpu_reset(struct kvm_vcpu
*vcpu
, bool init_event
);
1214 void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu
*vcpu
);
1215 void kvm_arch_mmu_notifier_invalidate_page(struct kvm
*kvm
,
1216 unsigned long address
);
1218 void kvm_define_shared_msr(unsigned index
, u32 msr
);
1219 int kvm_set_shared_msr(unsigned index
, u64 val
, u64 mask
);
1221 unsigned long kvm_get_linear_rip(struct kvm_vcpu
*vcpu
);
1222 bool kvm_is_linear_rip(struct kvm_vcpu
*vcpu
, unsigned long linear_rip
);
1224 void kvm_arch_async_page_not_present(struct kvm_vcpu
*vcpu
,
1225 struct kvm_async_pf
*work
);
1226 void kvm_arch_async_page_present(struct kvm_vcpu
*vcpu
,
1227 struct kvm_async_pf
*work
);
1228 void kvm_arch_async_page_ready(struct kvm_vcpu
*vcpu
,
1229 struct kvm_async_pf
*work
);
1230 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu
*vcpu
);
1231 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
1233 void kvm_complete_insn_gp(struct kvm_vcpu
*vcpu
, int err
);
1235 int kvm_is_in_guest(void);
1237 int __x86_set_memory_region(struct kvm
*kvm
,
1238 const struct kvm_userspace_memory_region
*mem
);
1239 int x86_set_memory_region(struct kvm
*kvm
,
1240 const struct kvm_userspace_memory_region
*mem
);
1241 bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu
*vcpu
);
1242 bool kvm_vcpu_is_bsp(struct kvm_vcpu
*vcpu
);
1244 #endif /* _ASM_X86_KVM_HOST_H */