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>
29 #include <asm/pvclock-abi.h>
32 #include <asm/msr-index.h>
35 #define KVM_MAX_VCPUS 255
36 #define KVM_SOFT_MAX_VCPUS 160
37 #define KVM_USER_MEM_SLOTS 509
38 /* memory slots that are not exposed to userspace */
39 #define KVM_PRIVATE_MEM_SLOTS 3
40 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
42 #define KVM_PIO_PAGE_OFFSET 1
43 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
44 #define KVM_HALT_POLL_NS_DEFAULT 500000
46 #define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS
48 #define CR0_RESERVED_BITS \
49 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
50 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
51 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
53 #define CR3_L_MODE_RESERVED_BITS 0xFFFFFF0000000000ULL
54 #define CR3_PCID_INVD BIT_64(63)
55 #define CR4_RESERVED_BITS \
56 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
57 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
58 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
59 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \
60 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE | X86_CR4_SMAP))
62 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
66 #define INVALID_PAGE (~(hpa_t)0)
67 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
69 #define UNMAPPED_GVA (~(gpa_t)0)
71 /* KVM Hugepage definitions for x86 */
72 #define KVM_NR_PAGE_SIZES 3
73 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
74 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
75 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
76 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
77 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
79 static inline gfn_t
gfn_to_index(gfn_t gfn
, gfn_t base_gfn
, int level
)
81 /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */
82 return (gfn
>> KVM_HPAGE_GFN_SHIFT(level
)) -
83 (base_gfn
>> KVM_HPAGE_GFN_SHIFT(level
));
86 #define KVM_PERMILLE_MMU_PAGES 20
87 #define KVM_MIN_ALLOC_MMU_PAGES 64
88 #define KVM_MMU_HASH_SHIFT 10
89 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
90 #define KVM_MIN_FREE_MMU_PAGES 5
91 #define KVM_REFILL_PAGES 25
92 #define KVM_MAX_CPUID_ENTRIES 80
93 #define KVM_NR_FIXED_MTRR_REGION 88
94 #define KVM_NR_VAR_MTRR 8
96 #define ASYNC_PF_PER_VCPU 64
122 VCPU_EXREG_PDPTR
= NR_VCPU_REGS
,
139 #include <asm/kvm_emulate.h>
141 #define KVM_NR_MEM_OBJS 40
143 #define KVM_NR_DB_REGS 4
145 #define DR6_BD (1 << 13)
146 #define DR6_BS (1 << 14)
147 #define DR6_RTM (1 << 16)
148 #define DR6_FIXED_1 0xfffe0ff0
149 #define DR6_INIT 0xffff0ff0
150 #define DR6_VOLATILE 0x0001e00f
152 #define DR7_BP_EN_MASK 0x000000ff
153 #define DR7_GE (1 << 9)
154 #define DR7_GD (1 << 13)
155 #define DR7_FIXED_1 0x00000400
156 #define DR7_VOLATILE 0xffff2bff
158 #define PFERR_PRESENT_BIT 0
159 #define PFERR_WRITE_BIT 1
160 #define PFERR_USER_BIT 2
161 #define PFERR_RSVD_BIT 3
162 #define PFERR_FETCH_BIT 4
164 #define PFERR_PRESENT_MASK (1U << PFERR_PRESENT_BIT)
165 #define PFERR_WRITE_MASK (1U << PFERR_WRITE_BIT)
166 #define PFERR_USER_MASK (1U << PFERR_USER_BIT)
167 #define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT)
168 #define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT)
170 /* apic attention bits */
171 #define KVM_APIC_CHECK_VAPIC 0
173 * The following bit is set with PV-EOI, unset on EOI.
174 * We detect PV-EOI changes by guest by comparing
175 * this bit with PV-EOI in guest memory.
176 * See the implementation in apic_update_pv_eoi.
178 #define KVM_APIC_PV_EOI_PENDING 1
180 struct kvm_kernel_irq_routing_entry
;
183 * We don't want allocation failures within the mmu code, so we preallocate
184 * enough memory for a single page fault in a cache.
186 struct kvm_mmu_memory_cache
{
188 void *objects
[KVM_NR_MEM_OBJS
];
191 union kvm_mmu_page_role
{
202 unsigned smep_andnot_wp
:1;
203 unsigned smap_andnot_wp
:1;
207 * This is left at the top of the word so that
208 * kvm_memslots_for_spte_role can extract it with a
209 * simple shift. While there is room, give it a whole
210 * byte so it is also faster to load it from memory.
216 struct kvm_mmu_page
{
217 struct list_head link
;
218 struct hlist_node hash_link
;
221 * The following two entries are used to key the shadow page in the
225 union kvm_mmu_page_role role
;
228 /* hold the gfn of each spte inside spt */
231 int root_count
; /* Currently serving as active root */
232 unsigned int unsync_children
;
233 unsigned long parent_ptes
; /* Reverse mapping for parent_pte */
235 /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */
236 unsigned long mmu_valid_gen
;
238 DECLARE_BITMAP(unsync_child_bitmap
, 512);
242 * Used out of the mmu-lock to avoid reading spte values while an
243 * update is in progress; see the comments in __get_spte_lockless().
245 int clear_spte_count
;
248 /* Number of writes since the last time traversal visited this page. */
249 int write_flooding_count
;
252 struct kvm_pio_request
{
259 struct rsvd_bits_validate
{
260 u64 rsvd_bits_mask
[2][4];
265 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
266 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
270 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long root
);
271 unsigned long (*get_cr3
)(struct kvm_vcpu
*vcpu
);
272 u64 (*get_pdptr
)(struct kvm_vcpu
*vcpu
, int index
);
273 int (*page_fault
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 err
,
275 void (*inject_page_fault
)(struct kvm_vcpu
*vcpu
,
276 struct x86_exception
*fault
);
277 gpa_t (*gva_to_gpa
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 access
,
278 struct x86_exception
*exception
);
279 gpa_t (*translate_gpa
)(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
280 struct x86_exception
*exception
);
281 int (*sync_page
)(struct kvm_vcpu
*vcpu
,
282 struct kvm_mmu_page
*sp
);
283 void (*invlpg
)(struct kvm_vcpu
*vcpu
, gva_t gva
);
284 void (*update_pte
)(struct kvm_vcpu
*vcpu
, struct kvm_mmu_page
*sp
,
285 u64
*spte
, const void *pte
);
288 int shadow_root_level
;
289 union kvm_mmu_page_role base_role
;
293 * Bitmap; bit set = permission fault
294 * Byte index: page fault error code [4:1]
295 * Bit index: pte permissions in ACC_* format
303 * check zero bits on shadow page table entries, these
304 * bits include not only hardware reserved bits but also
305 * the bits spte never used.
307 struct rsvd_bits_validate shadow_zero_check
;
309 struct rsvd_bits_validate guest_rsvd_check
;
312 * Bitmap: bit set = last pte in walk
313 * index[0:1]: level (zero-based)
320 u64 pdptrs
[4]; /* pae */
333 struct perf_event
*perf_event
;
334 struct kvm_vcpu
*vcpu
;
338 unsigned nr_arch_gp_counters
;
339 unsigned nr_arch_fixed_counters
;
340 unsigned available_event_types
;
345 u64 counter_bitmask
[2];
346 u64 global_ctrl_mask
;
349 struct kvm_pmc gp_counters
[INTEL_PMC_MAX_GENERIC
];
350 struct kvm_pmc fixed_counters
[INTEL_PMC_MAX_FIXED
];
351 struct irq_work irq_work
;
358 KVM_DEBUGREG_BP_ENABLED
= 1,
359 KVM_DEBUGREG_WONT_EXIT
= 2,
360 KVM_DEBUGREG_RELOAD
= 4,
363 struct kvm_mtrr_range
{
366 struct list_head node
;
370 struct kvm_mtrr_range var_ranges
[KVM_NR_VAR_MTRR
];
371 mtrr_type fixed_ranges
[KVM_NR_FIXED_MTRR_REGION
];
374 struct list_head head
;
377 /* Hyper-V per vcpu emulation context */
383 struct kvm_vcpu_arch
{
385 * rip and regs accesses must go through
386 * kvm_{register,rip}_{read,write} functions.
388 unsigned long regs
[NR_VCPU_REGS
];
393 unsigned long cr0_guest_owned_bits
;
397 unsigned long cr4_guest_owned_bits
;
402 struct kvm_lapic
*apic
; /* kernel irqchip context */
403 u64 eoi_exit_bitmap
[4];
404 unsigned long apic_attention
;
405 int32_t apic_arb_prio
;
407 u64 ia32_misc_enable_msr
;
409 bool tpr_access_reporting
;
413 * Paging state of the vcpu
415 * If the vcpu runs in guest mode with two level paging this still saves
416 * the paging mode of the l1 guest. This context is always used to
422 * Paging state of an L2 guest (used for nested npt)
424 * This context will save all necessary information to walk page tables
425 * of the an L2 guest. This context is only initialized for page table
426 * walking and not for faulting since we never handle l2 page faults on
429 struct kvm_mmu nested_mmu
;
432 * Pointer to the mmu context currently used for
433 * gva_to_gpa translations.
435 struct kvm_mmu
*walk_mmu
;
437 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache
;
438 struct kvm_mmu_memory_cache mmu_page_cache
;
439 struct kvm_mmu_memory_cache mmu_page_header_cache
;
441 struct fpu guest_fpu
;
444 u64 guest_supported_xcr0
;
445 u32 guest_xstate_size
;
447 struct kvm_pio_request pio
;
450 u8 event_exit_inst_len
;
452 struct kvm_queued_exception
{
460 struct kvm_queued_interrupt
{
466 int halt_request
; /* real mode on Intel only */
469 struct kvm_cpuid_entry2 cpuid_entries
[KVM_MAX_CPUID_ENTRIES
];
473 /* emulate context */
475 struct x86_emulate_ctxt emulate_ctxt
;
476 bool emulate_regs_need_sync_to_vcpu
;
477 bool emulate_regs_need_sync_from_vcpu
;
478 int (*complete_userspace_io
)(struct kvm_vcpu
*vcpu
);
481 struct pvclock_vcpu_time_info hv_clock
;
482 unsigned int hw_tsc_khz
;
483 struct gfn_to_hva_cache pv_time
;
484 bool pv_time_enabled
;
485 /* set guest stopped flag in pvclock flags field */
486 bool pvclock_set_guest_stopped_request
;
492 struct gfn_to_hva_cache stime
;
493 struct kvm_steal_time steal
;
498 u64 tsc_offset_adjustment
;
501 u64 this_tsc_generation
;
503 bool tsc_always_catchup
;
504 s8 virtual_tsc_shift
;
505 u32 virtual_tsc_mult
;
507 s64 ia32_tsc_adjust_msr
;
509 atomic_t nmi_queued
; /* unprocessed asynchronous NMIs */
510 unsigned nmi_pending
; /* NMI queued after currently running handler */
511 bool nmi_injected
; /* Trying to inject an NMI this entry */
512 bool smi_pending
; /* SMI queued after currently running handler */
514 struct kvm_mtrr mtrr_state
;
517 unsigned switch_db_regs
;
518 unsigned long db
[KVM_NR_DB_REGS
];
521 unsigned long eff_db
[KVM_NR_DB_REGS
];
522 unsigned long guest_debug_dr7
;
529 /* Cache MMIO info */
537 /* used for guest single stepping over the given code position */
538 unsigned long singlestep_rip
;
540 struct kvm_vcpu_hv hyperv
;
542 cpumask_var_t wbinvd_dirty_mask
;
544 unsigned long last_retry_eip
;
545 unsigned long last_retry_addr
;
549 gfn_t gfns
[roundup_pow_of_two(ASYNC_PF_PER_VCPU
)];
550 struct gfn_to_hva_cache data
;
556 /* OSVW MSRs (AMD only) */
564 struct gfn_to_hva_cache data
;
568 * Indicate whether the access faults on its page table in guest
569 * which is set when fix page fault and used to detect unhandeable
572 bool write_fault_to_shadow_pgtable
;
574 /* set at EPT violation at this point */
575 unsigned long exit_qualification
;
577 /* pv related host specific info */
582 int pending_ioapic_eoi
;
583 int pending_external_vector
;
586 struct kvm_lpage_info
{
590 struct kvm_arch_memory_slot
{
591 unsigned long *rmap
[KVM_NR_PAGE_SIZES
];
592 struct kvm_lpage_info
*lpage_info
[KVM_NR_PAGE_SIZES
- 1];
596 * We use as the mode the number of bits allocated in the LDR for the
597 * logical processor ID. It happens that these are all powers of two.
598 * This makes it is very easy to detect cases where the APICs are
599 * configured for multiple modes; in that case, we cannot use the map and
600 * hence cannot use kvm_irq_delivery_to_apic_fast either.
602 #define KVM_APIC_MODE_XAPIC_CLUSTER 4
603 #define KVM_APIC_MODE_XAPIC_FLAT 8
604 #define KVM_APIC_MODE_X2APIC 16
606 struct kvm_apic_map
{
609 struct kvm_lapic
*phys_map
[256];
610 /* first index is cluster id second is cpu id in a cluster */
611 struct kvm_lapic
*logical_map
[16][16];
614 /* Hyper-V emulation context */
620 /* Hyper-v based guest crash (NT kernel bugcheck) parameters */
621 u64 hv_crash_param
[HV_X64_MSR_CRASH_PARAMS
];
626 unsigned int n_used_mmu_pages
;
627 unsigned int n_requested_mmu_pages
;
628 unsigned int n_max_mmu_pages
;
629 unsigned int indirect_shadow_pages
;
630 unsigned long mmu_valid_gen
;
631 struct hlist_head mmu_page_hash
[KVM_NUM_MMU_PAGES
];
633 * Hash table of struct kvm_mmu_page.
635 struct list_head active_mmu_pages
;
636 struct list_head zapped_obsolete_pages
;
638 struct list_head assigned_dev_head
;
639 struct iommu_domain
*iommu_domain
;
640 bool iommu_noncoherent
;
641 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA
642 atomic_t noncoherent_dma_count
;
643 #define __KVM_HAVE_ARCH_ASSIGNED_DEVICE
644 atomic_t assigned_device_count
;
645 struct kvm_pic
*vpic
;
646 struct kvm_ioapic
*vioapic
;
647 struct kvm_pit
*vpit
;
648 atomic_t vapics_in_nmi_mode
;
649 struct mutex apic_map_lock
;
650 struct kvm_apic_map
*apic_map
;
652 unsigned int tss_addr
;
653 bool apic_access_page_done
;
657 bool ept_identity_pagetable_done
;
658 gpa_t ept_identity_map_addr
;
660 unsigned long irq_sources_bitmap
;
662 raw_spinlock_t tsc_write_lock
;
669 u64 cur_tsc_generation
;
670 int nr_vcpus_matched_tsc
;
672 spinlock_t pvclock_gtod_sync_lock
;
673 bool use_master_clock
;
674 u64 master_kernel_ns
;
675 cycle_t master_cycle_now
;
676 struct delayed_work kvmclock_update_work
;
677 struct delayed_work kvmclock_sync_work
;
679 struct kvm_xen_hvm_config xen_hvm_config
;
681 /* reads protected by irq_srcu, writes by irq_lock */
682 struct hlist_head mask_notifier_list
;
684 struct kvm_hv hyperv
;
686 #ifdef CONFIG_KVM_MMU_AUDIT
690 bool boot_vcpu_runs_old_kvmclock
;
696 u8 nr_reserved_ioapic_pins
;
700 u32 mmu_shadow_zapped
;
708 u32 remote_tlb_flush
;
712 struct kvm_vcpu_stat
{
722 u32 irq_window_exits
;
723 u32 nmi_window_exits
;
725 u32 halt_successful_poll
;
726 u32 halt_attempted_poll
;
728 u32 request_irq_exits
;
730 u32 host_state_reload
;
734 u32 insn_emulation_fail
;
740 struct x86_instruction_info
;
748 struct kvm_lapic_irq
{
760 int (*cpu_has_kvm_support
)(void); /* __init */
761 int (*disabled_by_bios
)(void); /* __init */
762 int (*hardware_enable
)(void);
763 void (*hardware_disable
)(void);
764 void (*check_processor_compatibility
)(void *rtn
);
765 int (*hardware_setup
)(void); /* __init */
766 void (*hardware_unsetup
)(void); /* __exit */
767 bool (*cpu_has_accelerated_tpr
)(void);
768 bool (*cpu_has_high_real_mode_segbase
)(void);
769 void (*cpuid_update
)(struct kvm_vcpu
*vcpu
);
771 /* Create, but do not attach this VCPU */
772 struct kvm_vcpu
*(*vcpu_create
)(struct kvm
*kvm
, unsigned id
);
773 void (*vcpu_free
)(struct kvm_vcpu
*vcpu
);
774 void (*vcpu_reset
)(struct kvm_vcpu
*vcpu
, bool init_event
);
776 void (*prepare_guest_switch
)(struct kvm_vcpu
*vcpu
);
777 void (*vcpu_load
)(struct kvm_vcpu
*vcpu
, int cpu
);
778 void (*vcpu_put
)(struct kvm_vcpu
*vcpu
);
780 void (*update_db_bp_intercept
)(struct kvm_vcpu
*vcpu
);
781 int (*get_msr
)(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
782 int (*set_msr
)(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
783 u64 (*get_segment_base
)(struct kvm_vcpu
*vcpu
, int seg
);
784 void (*get_segment
)(struct kvm_vcpu
*vcpu
,
785 struct kvm_segment
*var
, int seg
);
786 int (*get_cpl
)(struct kvm_vcpu
*vcpu
);
787 void (*set_segment
)(struct kvm_vcpu
*vcpu
,
788 struct kvm_segment
*var
, int seg
);
789 void (*get_cs_db_l_bits
)(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
790 void (*decache_cr0_guest_bits
)(struct kvm_vcpu
*vcpu
);
791 void (*decache_cr3
)(struct kvm_vcpu
*vcpu
);
792 void (*decache_cr4_guest_bits
)(struct kvm_vcpu
*vcpu
);
793 void (*set_cr0
)(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
794 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
795 int (*set_cr4
)(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
796 void (*set_efer
)(struct kvm_vcpu
*vcpu
, u64 efer
);
797 void (*get_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
798 void (*set_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
799 void (*get_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
800 void (*set_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
801 u64 (*get_dr6
)(struct kvm_vcpu
*vcpu
);
802 void (*set_dr6
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
803 void (*sync_dirty_debug_regs
)(struct kvm_vcpu
*vcpu
);
804 void (*set_dr7
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
805 void (*cache_reg
)(struct kvm_vcpu
*vcpu
, enum kvm_reg reg
);
806 unsigned long (*get_rflags
)(struct kvm_vcpu
*vcpu
);
807 void (*set_rflags
)(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
808 void (*fpu_activate
)(struct kvm_vcpu
*vcpu
);
809 void (*fpu_deactivate
)(struct kvm_vcpu
*vcpu
);
811 void (*tlb_flush
)(struct kvm_vcpu
*vcpu
);
813 void (*run
)(struct kvm_vcpu
*vcpu
);
814 int (*handle_exit
)(struct kvm_vcpu
*vcpu
);
815 void (*skip_emulated_instruction
)(struct kvm_vcpu
*vcpu
);
816 void (*set_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
817 u32 (*get_interrupt_shadow
)(struct kvm_vcpu
*vcpu
);
818 void (*patch_hypercall
)(struct kvm_vcpu
*vcpu
,
819 unsigned char *hypercall_addr
);
820 void (*set_irq
)(struct kvm_vcpu
*vcpu
);
821 void (*set_nmi
)(struct kvm_vcpu
*vcpu
);
822 void (*queue_exception
)(struct kvm_vcpu
*vcpu
, unsigned nr
,
823 bool has_error_code
, u32 error_code
,
825 void (*cancel_injection
)(struct kvm_vcpu
*vcpu
);
826 int (*interrupt_allowed
)(struct kvm_vcpu
*vcpu
);
827 int (*nmi_allowed
)(struct kvm_vcpu
*vcpu
);
828 bool (*get_nmi_mask
)(struct kvm_vcpu
*vcpu
);
829 void (*set_nmi_mask
)(struct kvm_vcpu
*vcpu
, bool masked
);
830 void (*enable_nmi_window
)(struct kvm_vcpu
*vcpu
);
831 void (*enable_irq_window
)(struct kvm_vcpu
*vcpu
);
832 void (*update_cr8_intercept
)(struct kvm_vcpu
*vcpu
, int tpr
, int irr
);
833 int (*cpu_uses_apicv
)(struct kvm_vcpu
*vcpu
);
834 void (*hwapic_irr_update
)(struct kvm_vcpu
*vcpu
, int max_irr
);
835 void (*hwapic_isr_update
)(struct kvm
*kvm
, int isr
);
836 void (*load_eoi_exitmap
)(struct kvm_vcpu
*vcpu
);
837 void (*set_virtual_x2apic_mode
)(struct kvm_vcpu
*vcpu
, bool set
);
838 void (*set_apic_access_page_addr
)(struct kvm_vcpu
*vcpu
, hpa_t hpa
);
839 void (*deliver_posted_interrupt
)(struct kvm_vcpu
*vcpu
, int vector
);
840 void (*sync_pir_to_irr
)(struct kvm_vcpu
*vcpu
);
841 int (*set_tss_addr
)(struct kvm
*kvm
, unsigned int addr
);
842 int (*get_tdp_level
)(void);
843 u64 (*get_mt_mask
)(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool is_mmio
);
844 int (*get_lpage_level
)(void);
845 bool (*rdtscp_supported
)(void);
846 bool (*invpcid_supported
)(void);
847 void (*adjust_tsc_offset
)(struct kvm_vcpu
*vcpu
, s64 adjustment
, bool host
);
849 void (*set_tdp_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
851 void (*set_supported_cpuid
)(u32 func
, struct kvm_cpuid_entry2
*entry
);
853 bool (*has_wbinvd_exit
)(void);
855 void (*set_tsc_khz
)(struct kvm_vcpu
*vcpu
, u32 user_tsc_khz
, bool scale
);
856 u64 (*read_tsc_offset
)(struct kvm_vcpu
*vcpu
);
857 void (*write_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 offset
);
859 u64 (*compute_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 target_tsc
);
860 u64 (*read_l1_tsc
)(struct kvm_vcpu
*vcpu
, u64 host_tsc
);
862 void (*get_exit_info
)(struct kvm_vcpu
*vcpu
, u64
*info1
, u64
*info2
);
864 int (*check_intercept
)(struct kvm_vcpu
*vcpu
,
865 struct x86_instruction_info
*info
,
866 enum x86_intercept_stage stage
);
867 void (*handle_external_intr
)(struct kvm_vcpu
*vcpu
);
868 bool (*mpx_supported
)(void);
869 bool (*xsaves_supported
)(void);
871 int (*check_nested_events
)(struct kvm_vcpu
*vcpu
, bool external_intr
);
873 void (*sched_in
)(struct kvm_vcpu
*kvm
, int cpu
);
876 * Arch-specific dirty logging hooks. These hooks are only supposed to
877 * be valid if the specific arch has hardware-accelerated dirty logging
878 * mechanism. Currently only for PML on VMX.
880 * - slot_enable_log_dirty:
881 * called when enabling log dirty mode for the slot.
882 * - slot_disable_log_dirty:
883 * called when disabling log dirty mode for the slot.
884 * also called when slot is created with log dirty disabled.
886 * called before reporting dirty_bitmap to userspace.
887 * - enable_log_dirty_pt_masked:
888 * called when reenabling log dirty for the GFNs in the mask after
889 * corresponding bits are cleared in slot->dirty_bitmap.
891 void (*slot_enable_log_dirty
)(struct kvm
*kvm
,
892 struct kvm_memory_slot
*slot
);
893 void (*slot_disable_log_dirty
)(struct kvm
*kvm
,
894 struct kvm_memory_slot
*slot
);
895 void (*flush_log_dirty
)(struct kvm
*kvm
);
896 void (*enable_log_dirty_pt_masked
)(struct kvm
*kvm
,
897 struct kvm_memory_slot
*slot
,
898 gfn_t offset
, unsigned long mask
);
899 /* pmu operations of sub-arch */
900 const struct kvm_pmu_ops
*pmu_ops
;
903 * Architecture specific hooks for vCPU blocking due to
905 * Returns for .pre_block():
906 * - 0 means continue to block the vCPU.
907 * - 1 means we cannot block the vCPU since some event
908 * happens during this period, such as, 'ON' bit in
909 * posted-interrupts descriptor is set.
911 int (*pre_block
)(struct kvm_vcpu
*vcpu
);
912 void (*post_block
)(struct kvm_vcpu
*vcpu
);
913 int (*update_pi_irte
)(struct kvm
*kvm
, unsigned int host_irq
,
914 uint32_t guest_irq
, bool set
);
917 struct kvm_arch_async_pf
{
924 extern struct kvm_x86_ops
*kvm_x86_ops
;
926 static inline void adjust_tsc_offset_guest(struct kvm_vcpu
*vcpu
,
929 kvm_x86_ops
->adjust_tsc_offset(vcpu
, adjustment
, false);
932 static inline void adjust_tsc_offset_host(struct kvm_vcpu
*vcpu
, s64 adjustment
)
934 kvm_x86_ops
->adjust_tsc_offset(vcpu
, adjustment
, true);
937 int kvm_mmu_module_init(void);
938 void kvm_mmu_module_exit(void);
940 void kvm_mmu_destroy(struct kvm_vcpu
*vcpu
);
941 int kvm_mmu_create(struct kvm_vcpu
*vcpu
);
942 void kvm_mmu_setup(struct kvm_vcpu
*vcpu
);
943 void kvm_mmu_set_mask_ptes(u64 user_mask
, u64 accessed_mask
,
944 u64 dirty_mask
, u64 nx_mask
, u64 x_mask
);
946 void kvm_mmu_reset_context(struct kvm_vcpu
*vcpu
);
947 void kvm_mmu_slot_remove_write_access(struct kvm
*kvm
,
948 struct kvm_memory_slot
*memslot
);
949 void kvm_mmu_zap_collapsible_sptes(struct kvm
*kvm
,
950 const struct kvm_memory_slot
*memslot
);
951 void kvm_mmu_slot_leaf_clear_dirty(struct kvm
*kvm
,
952 struct kvm_memory_slot
*memslot
);
953 void kvm_mmu_slot_largepage_remove_write_access(struct kvm
*kvm
,
954 struct kvm_memory_slot
*memslot
);
955 void kvm_mmu_slot_set_dirty(struct kvm
*kvm
,
956 struct kvm_memory_slot
*memslot
);
957 void kvm_mmu_clear_dirty_pt_masked(struct kvm
*kvm
,
958 struct kvm_memory_slot
*slot
,
959 gfn_t gfn_offset
, unsigned long mask
);
960 void kvm_mmu_zap_all(struct kvm
*kvm
);
961 void kvm_mmu_invalidate_mmio_sptes(struct kvm
*kvm
, struct kvm_memslots
*slots
);
962 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm
*kvm
);
963 void kvm_mmu_change_mmu_pages(struct kvm
*kvm
, unsigned int kvm_nr_mmu_pages
);
965 int load_pdptrs(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
, unsigned long cr3
);
967 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
968 const void *val
, int bytes
);
970 struct kvm_irq_mask_notifier
{
971 void (*func
)(struct kvm_irq_mask_notifier
*kimn
, bool masked
);
973 struct hlist_node link
;
976 void kvm_register_irq_mask_notifier(struct kvm
*kvm
, int irq
,
977 struct kvm_irq_mask_notifier
*kimn
);
978 void kvm_unregister_irq_mask_notifier(struct kvm
*kvm
, int irq
,
979 struct kvm_irq_mask_notifier
*kimn
);
980 void kvm_fire_mask_notifiers(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
,
983 extern bool tdp_enabled
;
985 u64
vcpu_tsc_khz(struct kvm_vcpu
*vcpu
);
987 /* control of guest tsc rate supported? */
988 extern bool kvm_has_tsc_control
;
989 /* maximum supported tsc_khz for guests */
990 extern u32 kvm_max_guest_tsc_khz
;
992 enum emulation_result
{
993 EMULATE_DONE
, /* no further processing */
994 EMULATE_USER_EXIT
, /* kvm_run ready for userspace exit */
995 EMULATE_FAIL
, /* can't emulate this instruction */
998 #define EMULTYPE_NO_DECODE (1 << 0)
999 #define EMULTYPE_TRAP_UD (1 << 1)
1000 #define EMULTYPE_SKIP (1 << 2)
1001 #define EMULTYPE_RETRY (1 << 3)
1002 #define EMULTYPE_NO_REEXECUTE (1 << 4)
1003 int x86_emulate_instruction(struct kvm_vcpu
*vcpu
, unsigned long cr2
,
1004 int emulation_type
, void *insn
, int insn_len
);
1006 static inline int emulate_instruction(struct kvm_vcpu
*vcpu
,
1009 return x86_emulate_instruction(vcpu
, 0, emulation_type
, NULL
, 0);
1012 void kvm_enable_efer_bits(u64
);
1013 bool kvm_valid_efer(struct kvm_vcpu
*vcpu
, u64 efer
);
1014 int kvm_get_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1015 int kvm_set_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1017 struct x86_emulate_ctxt
;
1019 int kvm_fast_pio_out(struct kvm_vcpu
*vcpu
, int size
, unsigned short port
);
1020 void kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
);
1021 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
);
1022 int kvm_vcpu_halt(struct kvm_vcpu
*vcpu
);
1023 int kvm_emulate_wbinvd(struct kvm_vcpu
*vcpu
);
1025 void kvm_get_segment(struct kvm_vcpu
*vcpu
, struct kvm_segment
*var
, int seg
);
1026 int kvm_load_segment_descriptor(struct kvm_vcpu
*vcpu
, u16 selector
, int seg
);
1027 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu
*vcpu
, u8 vector
);
1029 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int idt_index
,
1030 int reason
, bool has_error_code
, u32 error_code
);
1032 int kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
1033 int kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
1034 int kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
1035 int kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
1036 int kvm_set_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long val
);
1037 int kvm_get_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long *val
);
1038 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
);
1039 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
);
1040 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
1041 int kvm_set_xcr(struct kvm_vcpu
*vcpu
, u32 index
, u64 xcr
);
1043 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1044 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1046 unsigned long kvm_get_rflags(struct kvm_vcpu
*vcpu
);
1047 void kvm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
1048 bool kvm_rdpmc(struct kvm_vcpu
*vcpu
);
1050 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
1051 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
1052 void kvm_requeue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
1053 void kvm_requeue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
1054 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
1055 int kvm_read_guest_page_mmu(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
,
1056 gfn_t gfn
, void *data
, int offset
, int len
,
1058 bool kvm_require_cpl(struct kvm_vcpu
*vcpu
, int required_cpl
);
1059 bool kvm_require_dr(struct kvm_vcpu
*vcpu
, int dr
);
1061 static inline int __kvm_irq_line_state(unsigned long *irq_state
,
1062 int irq_source_id
, int level
)
1064 /* Logical OR for level trig interrupt */
1066 __set_bit(irq_source_id
, irq_state
);
1068 __clear_bit(irq_source_id
, irq_state
);
1070 return !!(*irq_state
);
1073 int kvm_pic_set_irq(struct kvm_pic
*pic
, int irq
, int irq_source_id
, int level
);
1074 void kvm_pic_clear_all(struct kvm_pic
*pic
, int irq_source_id
);
1076 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
);
1078 void kvm_mmu_pte_write(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
1079 const u8
*new, int bytes
);
1080 int kvm_mmu_unprotect_page(struct kvm
*kvm
, gfn_t gfn
);
1081 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
*vcpu
, gva_t gva
);
1082 void __kvm_mmu_free_some_pages(struct kvm_vcpu
*vcpu
);
1083 int kvm_mmu_load(struct kvm_vcpu
*vcpu
);
1084 void kvm_mmu_unload(struct kvm_vcpu
*vcpu
);
1085 void kvm_mmu_sync_roots(struct kvm_vcpu
*vcpu
);
1086 gpa_t
translate_nested_gpa(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
1087 struct x86_exception
*exception
);
1088 gpa_t
kvm_mmu_gva_to_gpa_read(struct kvm_vcpu
*vcpu
, gva_t gva
,
1089 struct x86_exception
*exception
);
1090 gpa_t
kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu
*vcpu
, gva_t gva
,
1091 struct x86_exception
*exception
);
1092 gpa_t
kvm_mmu_gva_to_gpa_write(struct kvm_vcpu
*vcpu
, gva_t gva
,
1093 struct x86_exception
*exception
);
1094 gpa_t
kvm_mmu_gva_to_gpa_system(struct kvm_vcpu
*vcpu
, gva_t gva
,
1095 struct x86_exception
*exception
);
1097 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
);
1099 int kvm_mmu_page_fault(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 error_code
,
1100 void *insn
, int insn_len
);
1101 void kvm_mmu_invlpg(struct kvm_vcpu
*vcpu
, gva_t gva
);
1102 void kvm_mmu_new_cr3(struct kvm_vcpu
*vcpu
);
1104 void kvm_enable_tdp(void);
1105 void kvm_disable_tdp(void);
1107 static inline gpa_t
translate_gpa(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
1108 struct x86_exception
*exception
)
1113 static inline struct kvm_mmu_page
*page_header(hpa_t shadow_page
)
1115 struct page
*page
= pfn_to_page(shadow_page
>> PAGE_SHIFT
);
1117 return (struct kvm_mmu_page
*)page_private(page
);
1120 static inline u16
kvm_read_ldt(void)
1123 asm("sldt %0" : "=g"(ldt
));
1127 static inline void kvm_load_ldt(u16 sel
)
1129 asm("lldt %0" : : "rm"(sel
));
1132 #ifdef CONFIG_X86_64
1133 static inline unsigned long read_msr(unsigned long msr
)
1142 static inline u32
get_rdx_init_val(void)
1144 return 0x600; /* P6 family */
1147 static inline void kvm_inject_gp(struct kvm_vcpu
*vcpu
, u32 error_code
)
1149 kvm_queue_exception_e(vcpu
, GP_VECTOR
, error_code
);
1152 static inline u64
get_canonical(u64 la
)
1154 return ((int64_t)la
<< 16) >> 16;
1157 static inline bool is_noncanonical_address(u64 la
)
1159 #ifdef CONFIG_X86_64
1160 return get_canonical(la
) != la
;
1166 #define TSS_IOPB_BASE_OFFSET 0x66
1167 #define TSS_BASE_SIZE 0x68
1168 #define TSS_IOPB_SIZE (65536 / 8)
1169 #define TSS_REDIRECTION_SIZE (256 / 8)
1170 #define RMODE_TSS_SIZE \
1171 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
1174 TASK_SWITCH_CALL
= 0,
1175 TASK_SWITCH_IRET
= 1,
1176 TASK_SWITCH_JMP
= 2,
1177 TASK_SWITCH_GATE
= 3,
1180 #define HF_GIF_MASK (1 << 0)
1181 #define HF_HIF_MASK (1 << 1)
1182 #define HF_VINTR_MASK (1 << 2)
1183 #define HF_NMI_MASK (1 << 3)
1184 #define HF_IRET_MASK (1 << 4)
1185 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
1186 #define HF_SMM_MASK (1 << 6)
1187 #define HF_SMM_INSIDE_NMI_MASK (1 << 7)
1189 #define __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
1190 #define KVM_ADDRESS_SPACE_NUM 2
1192 #define kvm_arch_vcpu_memslots_id(vcpu) ((vcpu)->arch.hflags & HF_SMM_MASK ? 1 : 0)
1193 #define kvm_memslots_for_spte_role(kvm, role) __kvm_memslots(kvm, (role).smm)
1196 * Hardware virtualization extension instructions may fault if a
1197 * reboot turns off virtualization while processes are running.
1198 * Trap the fault and ignore the instruction if that happens.
1200 asmlinkage
void kvm_spurious_fault(void);
1202 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
1203 "666: " insn "\n\t" \
1205 ".pushsection .fixup, \"ax\" \n" \
1207 cleanup_insn "\n\t" \
1208 "cmpb $0, kvm_rebooting \n\t" \
1210 __ASM_SIZE(push) " $666b \n\t" \
1211 "call kvm_spurious_fault \n\t" \
1212 ".popsection \n\t" \
1213 _ASM_EXTABLE(666b, 667b)
1215 #define __kvm_handle_fault_on_reboot(insn) \
1216 ____kvm_handle_fault_on_reboot(insn, "")
1218 #define KVM_ARCH_WANT_MMU_NOTIFIER
1219 int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
1220 int kvm_unmap_hva_range(struct kvm
*kvm
, unsigned long start
, unsigned long end
);
1221 int kvm_age_hva(struct kvm
*kvm
, unsigned long start
, unsigned long end
);
1222 int kvm_test_age_hva(struct kvm
*kvm
, unsigned long hva
);
1223 void kvm_set_spte_hva(struct kvm
*kvm
, unsigned long hva
, pte_t pte
);
1224 int kvm_cpu_has_injectable_intr(struct kvm_vcpu
*v
);
1225 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
);
1226 int kvm_arch_interrupt_allowed(struct kvm_vcpu
*vcpu
);
1227 int kvm_cpu_get_interrupt(struct kvm_vcpu
*v
);
1228 void kvm_vcpu_reset(struct kvm_vcpu
*vcpu
, bool init_event
);
1229 void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu
*vcpu
);
1230 void kvm_arch_mmu_notifier_invalidate_page(struct kvm
*kvm
,
1231 unsigned long address
);
1233 void kvm_define_shared_msr(unsigned index
, u32 msr
);
1234 int kvm_set_shared_msr(unsigned index
, u64 val
, u64 mask
);
1236 unsigned long kvm_get_linear_rip(struct kvm_vcpu
*vcpu
);
1237 bool kvm_is_linear_rip(struct kvm_vcpu
*vcpu
, unsigned long linear_rip
);
1239 void kvm_arch_async_page_not_present(struct kvm_vcpu
*vcpu
,
1240 struct kvm_async_pf
*work
);
1241 void kvm_arch_async_page_present(struct kvm_vcpu
*vcpu
,
1242 struct kvm_async_pf
*work
);
1243 void kvm_arch_async_page_ready(struct kvm_vcpu
*vcpu
,
1244 struct kvm_async_pf
*work
);
1245 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu
*vcpu
);
1246 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
1248 void kvm_complete_insn_gp(struct kvm_vcpu
*vcpu
, int err
);
1250 int kvm_is_in_guest(void);
1252 int __x86_set_memory_region(struct kvm
*kvm
, int id
, gpa_t gpa
, u32 size
);
1253 int x86_set_memory_region(struct kvm
*kvm
, int id
, gpa_t gpa
, u32 size
);
1254 bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu
*vcpu
);
1255 bool kvm_vcpu_is_bsp(struct kvm_vcpu
*vcpu
);
1257 bool kvm_intr_is_single_vcpu(struct kvm
*kvm
, struct kvm_lapic_irq
*irq
,
1258 struct kvm_vcpu
**dest_vcpu
);
1260 void kvm_set_msi_irq(struct kvm_kernel_irq_routing_entry
*e
,
1261 struct kvm_lapic_irq
*irq
);
1263 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu
*vcpu
) {}
1264 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu
*vcpu
) {}
1266 #endif /* _ASM_X86_KVM_HOST_H */