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
179 struct kvm_kernel_irq_routing_entry
;
182 * We don't want allocation failures within the mmu code, so we preallocate
183 * enough memory for a single page fault in a cache.
185 struct kvm_mmu_memory_cache
{
187 void *objects
[KVM_NR_MEM_OBJS
];
190 union kvm_mmu_page_role
{
201 unsigned smep_andnot_wp
:1;
202 unsigned smap_andnot_wp
:1;
206 * This is left at the top of the word so that
207 * kvm_memslots_for_spte_role can extract it with a
208 * simple shift. While there is room, give it a whole
209 * byte so it is also faster to load it from memory.
215 struct kvm_mmu_page
{
216 struct list_head link
;
217 struct hlist_node hash_link
;
220 * The following two entries are used to key the shadow page in the
224 union kvm_mmu_page_role role
;
227 /* hold the gfn of each spte inside spt */
230 int root_count
; /* Currently serving as active root */
231 unsigned int unsync_children
;
232 unsigned long parent_ptes
; /* Reverse mapping for parent_pte */
234 /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */
235 unsigned long mmu_valid_gen
;
237 DECLARE_BITMAP(unsync_child_bitmap
, 512);
241 * Used out of the mmu-lock to avoid reading spte values while an
242 * update is in progress; see the comments in __get_spte_lockless().
244 int clear_spte_count
;
247 /* Number of writes since the last time traversal visited this page. */
248 int write_flooding_count
;
251 struct kvm_pio_request
{
258 struct rsvd_bits_validate
{
259 u64 rsvd_bits_mask
[2][4];
264 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
265 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
269 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long root
);
270 unsigned long (*get_cr3
)(struct kvm_vcpu
*vcpu
);
271 u64 (*get_pdptr
)(struct kvm_vcpu
*vcpu
, int index
);
272 int (*page_fault
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 err
,
274 void (*inject_page_fault
)(struct kvm_vcpu
*vcpu
,
275 struct x86_exception
*fault
);
276 gpa_t (*gva_to_gpa
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 access
,
277 struct x86_exception
*exception
);
278 gpa_t (*translate_gpa
)(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
279 struct x86_exception
*exception
);
280 int (*sync_page
)(struct kvm_vcpu
*vcpu
,
281 struct kvm_mmu_page
*sp
);
282 void (*invlpg
)(struct kvm_vcpu
*vcpu
, gva_t gva
);
283 void (*update_pte
)(struct kvm_vcpu
*vcpu
, struct kvm_mmu_page
*sp
,
284 u64
*spte
, const void *pte
);
287 int shadow_root_level
;
288 union kvm_mmu_page_role base_role
;
292 * Bitmap; bit set = permission fault
293 * Byte index: page fault error code [4:1]
294 * Bit index: pte permissions in ACC_* format
302 * check zero bits on shadow page table entries, these
303 * bits include not only hardware reserved bits but also
304 * the bits spte never used.
306 struct rsvd_bits_validate shadow_zero_check
;
308 struct rsvd_bits_validate guest_rsvd_check
;
311 * Bitmap: bit set = last pte in walk
312 * index[0:1]: level (zero-based)
319 u64 pdptrs
[4]; /* pae */
332 struct perf_event
*perf_event
;
333 struct kvm_vcpu
*vcpu
;
337 unsigned nr_arch_gp_counters
;
338 unsigned nr_arch_fixed_counters
;
339 unsigned available_event_types
;
344 u64 counter_bitmask
[2];
345 u64 global_ctrl_mask
;
348 struct kvm_pmc gp_counters
[INTEL_PMC_MAX_GENERIC
];
349 struct kvm_pmc fixed_counters
[INTEL_PMC_MAX_FIXED
];
350 struct irq_work irq_work
;
357 KVM_DEBUGREG_BP_ENABLED
= 1,
358 KVM_DEBUGREG_WONT_EXIT
= 2,
359 KVM_DEBUGREG_RELOAD
= 4,
362 struct kvm_mtrr_range
{
365 struct list_head node
;
369 struct kvm_mtrr_range var_ranges
[KVM_NR_VAR_MTRR
];
370 mtrr_type fixed_ranges
[KVM_NR_FIXED_MTRR_REGION
];
373 struct list_head head
;
376 /* Hyper-V per vcpu emulation context */
382 struct kvm_vcpu_arch
{
384 * rip and regs accesses must go through
385 * kvm_{register,rip}_{read,write} functions.
387 unsigned long regs
[NR_VCPU_REGS
];
392 unsigned long cr0_guest_owned_bits
;
396 unsigned long cr4_guest_owned_bits
;
401 struct kvm_lapic
*apic
; /* kernel irqchip context */
402 u64 eoi_exit_bitmap
[4];
403 unsigned long apic_attention
;
404 int32_t apic_arb_prio
;
406 u64 ia32_misc_enable_msr
;
408 bool tpr_access_reporting
;
412 * Paging state of the vcpu
414 * If the vcpu runs in guest mode with two level paging this still saves
415 * the paging mode of the l1 guest. This context is always used to
421 * Paging state of an L2 guest (used for nested npt)
423 * This context will save all necessary information to walk page tables
424 * of the an L2 guest. This context is only initialized for page table
425 * walking and not for faulting since we never handle l2 page faults on
428 struct kvm_mmu nested_mmu
;
431 * Pointer to the mmu context currently used for
432 * gva_to_gpa translations.
434 struct kvm_mmu
*walk_mmu
;
436 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache
;
437 struct kvm_mmu_memory_cache mmu_page_cache
;
438 struct kvm_mmu_memory_cache mmu_page_header_cache
;
440 struct fpu guest_fpu
;
443 u64 guest_supported_xcr0
;
444 u32 guest_xstate_size
;
446 struct kvm_pio_request pio
;
449 u8 event_exit_inst_len
;
451 struct kvm_queued_exception
{
459 struct kvm_queued_interrupt
{
465 int halt_request
; /* real mode on Intel only */
468 struct kvm_cpuid_entry2 cpuid_entries
[KVM_MAX_CPUID_ENTRIES
];
472 /* emulate context */
474 struct x86_emulate_ctxt emulate_ctxt
;
475 bool emulate_regs_need_sync_to_vcpu
;
476 bool emulate_regs_need_sync_from_vcpu
;
477 int (*complete_userspace_io
)(struct kvm_vcpu
*vcpu
);
480 struct pvclock_vcpu_time_info hv_clock
;
481 unsigned int hw_tsc_khz
;
482 struct gfn_to_hva_cache pv_time
;
483 bool pv_time_enabled
;
484 /* set guest stopped flag in pvclock flags field */
485 bool pvclock_set_guest_stopped_request
;
491 struct gfn_to_hva_cache stime
;
492 struct kvm_steal_time steal
;
497 u64 tsc_offset_adjustment
;
500 u64 this_tsc_generation
;
502 bool tsc_always_catchup
;
503 s8 virtual_tsc_shift
;
504 u32 virtual_tsc_mult
;
506 s64 ia32_tsc_adjust_msr
;
508 atomic_t nmi_queued
; /* unprocessed asynchronous NMIs */
509 unsigned nmi_pending
; /* NMI queued after currently running handler */
510 bool nmi_injected
; /* Trying to inject an NMI this entry */
511 bool smi_pending
; /* SMI queued after currently running handler */
513 struct kvm_mtrr mtrr_state
;
516 unsigned switch_db_regs
;
517 unsigned long db
[KVM_NR_DB_REGS
];
520 unsigned long eff_db
[KVM_NR_DB_REGS
];
521 unsigned long guest_debug_dr7
;
528 /* Cache MMIO info */
536 /* used for guest single stepping over the given code position */
537 unsigned long singlestep_rip
;
539 struct kvm_vcpu_hv hyperv
;
541 cpumask_var_t wbinvd_dirty_mask
;
543 unsigned long last_retry_eip
;
544 unsigned long last_retry_addr
;
548 gfn_t gfns
[roundup_pow_of_two(ASYNC_PF_PER_VCPU
)];
549 struct gfn_to_hva_cache data
;
555 /* OSVW MSRs (AMD only) */
563 struct gfn_to_hva_cache data
;
567 * Indicate whether the access faults on its page table in guest
568 * which is set when fix page fault and used to detect unhandeable
571 bool write_fault_to_shadow_pgtable
;
573 /* set at EPT violation at this point */
574 unsigned long exit_qualification
;
576 /* pv related host specific info */
581 int pending_ioapic_eoi
;
582 int pending_external_vector
;
585 struct kvm_lpage_info
{
589 struct kvm_arch_memory_slot
{
590 unsigned long *rmap
[KVM_NR_PAGE_SIZES
];
591 struct kvm_lpage_info
*lpage_info
[KVM_NR_PAGE_SIZES
- 1];
595 * We use as the mode the number of bits allocated in the LDR for the
596 * logical processor ID. It happens that these are all powers of two.
597 * This makes it is very easy to detect cases where the APICs are
598 * configured for multiple modes; in that case, we cannot use the map and
599 * hence cannot use kvm_irq_delivery_to_apic_fast either.
601 #define KVM_APIC_MODE_XAPIC_CLUSTER 4
602 #define KVM_APIC_MODE_XAPIC_FLAT 8
603 #define KVM_APIC_MODE_X2APIC 16
605 struct kvm_apic_map
{
608 struct kvm_lapic
*phys_map
[256];
609 /* first index is cluster id second is cpu id in a cluster */
610 struct kvm_lapic
*logical_map
[16][16];
613 /* Hyper-V emulation context */
619 /* Hyper-v based guest crash (NT kernel bugcheck) parameters */
620 u64 hv_crash_param
[HV_X64_MSR_CRASH_PARAMS
];
625 unsigned int n_used_mmu_pages
;
626 unsigned int n_requested_mmu_pages
;
627 unsigned int n_max_mmu_pages
;
628 unsigned int indirect_shadow_pages
;
629 unsigned long mmu_valid_gen
;
630 struct hlist_head mmu_page_hash
[KVM_NUM_MMU_PAGES
];
632 * Hash table of struct kvm_mmu_page.
634 struct list_head active_mmu_pages
;
635 struct list_head zapped_obsolete_pages
;
637 struct list_head assigned_dev_head
;
638 struct iommu_domain
*iommu_domain
;
639 bool iommu_noncoherent
;
640 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA
641 atomic_t noncoherent_dma_count
;
642 #define __KVM_HAVE_ARCH_ASSIGNED_DEVICE
643 atomic_t assigned_device_count
;
644 struct kvm_pic
*vpic
;
645 struct kvm_ioapic
*vioapic
;
646 struct kvm_pit
*vpit
;
647 atomic_t vapics_in_nmi_mode
;
648 struct mutex apic_map_lock
;
649 struct kvm_apic_map
*apic_map
;
651 unsigned int tss_addr
;
652 bool apic_access_page_done
;
656 bool ept_identity_pagetable_done
;
657 gpa_t ept_identity_map_addr
;
659 unsigned long irq_sources_bitmap
;
661 raw_spinlock_t tsc_write_lock
;
668 u64 cur_tsc_generation
;
669 int nr_vcpus_matched_tsc
;
671 spinlock_t pvclock_gtod_sync_lock
;
672 bool use_master_clock
;
673 u64 master_kernel_ns
;
674 cycle_t master_cycle_now
;
675 struct delayed_work kvmclock_update_work
;
676 struct delayed_work kvmclock_sync_work
;
678 struct kvm_xen_hvm_config xen_hvm_config
;
680 /* reads protected by irq_srcu, writes by irq_lock */
681 struct hlist_head mask_notifier_list
;
683 struct kvm_hv hyperv
;
685 #ifdef CONFIG_KVM_MMU_AUDIT
689 bool boot_vcpu_runs_old_kvmclock
;
695 u8 nr_reserved_ioapic_pins
;
699 u32 mmu_shadow_zapped
;
707 u32 remote_tlb_flush
;
711 struct kvm_vcpu_stat
{
721 u32 irq_window_exits
;
722 u32 nmi_window_exits
;
724 u32 halt_successful_poll
;
725 u32 halt_attempted_poll
;
727 u32 request_irq_exits
;
729 u32 host_state_reload
;
733 u32 insn_emulation_fail
;
739 struct x86_instruction_info
;
747 struct kvm_lapic_irq
{
759 int (*cpu_has_kvm_support
)(void); /* __init */
760 int (*disabled_by_bios
)(void); /* __init */
761 int (*hardware_enable
)(void);
762 void (*hardware_disable
)(void);
763 void (*check_processor_compatibility
)(void *rtn
);
764 int (*hardware_setup
)(void); /* __init */
765 void (*hardware_unsetup
)(void); /* __exit */
766 bool (*cpu_has_accelerated_tpr
)(void);
767 bool (*cpu_has_high_real_mode_segbase
)(void);
768 void (*cpuid_update
)(struct kvm_vcpu
*vcpu
);
770 /* Create, but do not attach this VCPU */
771 struct kvm_vcpu
*(*vcpu_create
)(struct kvm
*kvm
, unsigned id
);
772 void (*vcpu_free
)(struct kvm_vcpu
*vcpu
);
773 void (*vcpu_reset
)(struct kvm_vcpu
*vcpu
, bool init_event
);
775 void (*prepare_guest_switch
)(struct kvm_vcpu
*vcpu
);
776 void (*vcpu_load
)(struct kvm_vcpu
*vcpu
, int cpu
);
777 void (*vcpu_put
)(struct kvm_vcpu
*vcpu
);
779 void (*update_db_bp_intercept
)(struct kvm_vcpu
*vcpu
);
780 int (*get_msr
)(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
781 int (*set_msr
)(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
782 u64 (*get_segment_base
)(struct kvm_vcpu
*vcpu
, int seg
);
783 void (*get_segment
)(struct kvm_vcpu
*vcpu
,
784 struct kvm_segment
*var
, int seg
);
785 int (*get_cpl
)(struct kvm_vcpu
*vcpu
);
786 void (*set_segment
)(struct kvm_vcpu
*vcpu
,
787 struct kvm_segment
*var
, int seg
);
788 void (*get_cs_db_l_bits
)(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
789 void (*decache_cr0_guest_bits
)(struct kvm_vcpu
*vcpu
);
790 void (*decache_cr3
)(struct kvm_vcpu
*vcpu
);
791 void (*decache_cr4_guest_bits
)(struct kvm_vcpu
*vcpu
);
792 void (*set_cr0
)(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
793 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
794 int (*set_cr4
)(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
795 void (*set_efer
)(struct kvm_vcpu
*vcpu
, u64 efer
);
796 void (*get_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
797 void (*set_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
798 void (*get_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
799 void (*set_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
800 u64 (*get_dr6
)(struct kvm_vcpu
*vcpu
);
801 void (*set_dr6
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
802 void (*sync_dirty_debug_regs
)(struct kvm_vcpu
*vcpu
);
803 void (*set_dr7
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
804 void (*cache_reg
)(struct kvm_vcpu
*vcpu
, enum kvm_reg reg
);
805 unsigned long (*get_rflags
)(struct kvm_vcpu
*vcpu
);
806 void (*set_rflags
)(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
807 void (*fpu_activate
)(struct kvm_vcpu
*vcpu
);
808 void (*fpu_deactivate
)(struct kvm_vcpu
*vcpu
);
810 void (*tlb_flush
)(struct kvm_vcpu
*vcpu
);
812 void (*run
)(struct kvm_vcpu
*vcpu
);
813 int (*handle_exit
)(struct kvm_vcpu
*vcpu
);
814 void (*skip_emulated_instruction
)(struct kvm_vcpu
*vcpu
);
815 void (*set_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
816 u32 (*get_interrupt_shadow
)(struct kvm_vcpu
*vcpu
);
817 void (*patch_hypercall
)(struct kvm_vcpu
*vcpu
,
818 unsigned char *hypercall_addr
);
819 void (*set_irq
)(struct kvm_vcpu
*vcpu
);
820 void (*set_nmi
)(struct kvm_vcpu
*vcpu
);
821 void (*queue_exception
)(struct kvm_vcpu
*vcpu
, unsigned nr
,
822 bool has_error_code
, u32 error_code
,
824 void (*cancel_injection
)(struct kvm_vcpu
*vcpu
);
825 int (*interrupt_allowed
)(struct kvm_vcpu
*vcpu
);
826 int (*nmi_allowed
)(struct kvm_vcpu
*vcpu
);
827 bool (*get_nmi_mask
)(struct kvm_vcpu
*vcpu
);
828 void (*set_nmi_mask
)(struct kvm_vcpu
*vcpu
, bool masked
);
829 void (*enable_nmi_window
)(struct kvm_vcpu
*vcpu
);
830 void (*enable_irq_window
)(struct kvm_vcpu
*vcpu
);
831 void (*update_cr8_intercept
)(struct kvm_vcpu
*vcpu
, int tpr
, int irr
);
832 int (*cpu_uses_apicv
)(struct kvm_vcpu
*vcpu
);
833 void (*hwapic_irr_update
)(struct kvm_vcpu
*vcpu
, int max_irr
);
834 void (*hwapic_isr_update
)(struct kvm
*kvm
, int isr
);
835 void (*load_eoi_exitmap
)(struct kvm_vcpu
*vcpu
);
836 void (*set_virtual_x2apic_mode
)(struct kvm_vcpu
*vcpu
, bool set
);
837 void (*set_apic_access_page_addr
)(struct kvm_vcpu
*vcpu
, hpa_t hpa
);
838 void (*deliver_posted_interrupt
)(struct kvm_vcpu
*vcpu
, int vector
);
839 void (*sync_pir_to_irr
)(struct kvm_vcpu
*vcpu
);
840 int (*set_tss_addr
)(struct kvm
*kvm
, unsigned int addr
);
841 int (*get_tdp_level
)(void);
842 u64 (*get_mt_mask
)(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool is_mmio
);
843 int (*get_lpage_level
)(void);
844 bool (*rdtscp_supported
)(void);
845 bool (*invpcid_supported
)(void);
846 void (*adjust_tsc_offset
)(struct kvm_vcpu
*vcpu
, s64 adjustment
, bool host
);
848 void (*set_tdp_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
850 void (*set_supported_cpuid
)(u32 func
, struct kvm_cpuid_entry2
*entry
);
852 bool (*has_wbinvd_exit
)(void);
854 void (*set_tsc_khz
)(struct kvm_vcpu
*vcpu
, u32 user_tsc_khz
, bool scale
);
855 u64 (*read_tsc_offset
)(struct kvm_vcpu
*vcpu
);
856 void (*write_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 offset
);
858 u64 (*compute_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 target_tsc
);
859 u64 (*read_l1_tsc
)(struct kvm_vcpu
*vcpu
, u64 host_tsc
);
861 void (*get_exit_info
)(struct kvm_vcpu
*vcpu
, u64
*info1
, u64
*info2
);
863 int (*check_intercept
)(struct kvm_vcpu
*vcpu
,
864 struct x86_instruction_info
*info
,
865 enum x86_intercept_stage stage
);
866 void (*handle_external_intr
)(struct kvm_vcpu
*vcpu
);
867 bool (*mpx_supported
)(void);
868 bool (*xsaves_supported
)(void);
870 int (*check_nested_events
)(struct kvm_vcpu
*vcpu
, bool external_intr
);
872 void (*sched_in
)(struct kvm_vcpu
*kvm
, int cpu
);
875 * Arch-specific dirty logging hooks. These hooks are only supposed to
876 * be valid if the specific arch has hardware-accelerated dirty logging
877 * mechanism. Currently only for PML on VMX.
879 * - slot_enable_log_dirty:
880 * called when enabling log dirty mode for the slot.
881 * - slot_disable_log_dirty:
882 * called when disabling log dirty mode for the slot.
883 * also called when slot is created with log dirty disabled.
885 * called before reporting dirty_bitmap to userspace.
886 * - enable_log_dirty_pt_masked:
887 * called when reenabling log dirty for the GFNs in the mask after
888 * corresponding bits are cleared in slot->dirty_bitmap.
890 void (*slot_enable_log_dirty
)(struct kvm
*kvm
,
891 struct kvm_memory_slot
*slot
);
892 void (*slot_disable_log_dirty
)(struct kvm
*kvm
,
893 struct kvm_memory_slot
*slot
);
894 void (*flush_log_dirty
)(struct kvm
*kvm
);
895 void (*enable_log_dirty_pt_masked
)(struct kvm
*kvm
,
896 struct kvm_memory_slot
*slot
,
897 gfn_t offset
, unsigned long mask
);
898 /* pmu operations of sub-arch */
899 const struct kvm_pmu_ops
*pmu_ops
;
901 int (*update_pi_irte
)(struct kvm
*kvm
, unsigned int host_irq
,
902 uint32_t guest_irq
, bool set
);
905 struct kvm_arch_async_pf
{
912 extern struct kvm_x86_ops
*kvm_x86_ops
;
914 static inline void adjust_tsc_offset_guest(struct kvm_vcpu
*vcpu
,
917 kvm_x86_ops
->adjust_tsc_offset(vcpu
, adjustment
, false);
920 static inline void adjust_tsc_offset_host(struct kvm_vcpu
*vcpu
, s64 adjustment
)
922 kvm_x86_ops
->adjust_tsc_offset(vcpu
, adjustment
, true);
925 int kvm_mmu_module_init(void);
926 void kvm_mmu_module_exit(void);
928 void kvm_mmu_destroy(struct kvm_vcpu
*vcpu
);
929 int kvm_mmu_create(struct kvm_vcpu
*vcpu
);
930 void kvm_mmu_setup(struct kvm_vcpu
*vcpu
);
931 void kvm_mmu_set_mask_ptes(u64 user_mask
, u64 accessed_mask
,
932 u64 dirty_mask
, u64 nx_mask
, u64 x_mask
);
934 void kvm_mmu_reset_context(struct kvm_vcpu
*vcpu
);
935 void kvm_mmu_slot_remove_write_access(struct kvm
*kvm
,
936 struct kvm_memory_slot
*memslot
);
937 void kvm_mmu_zap_collapsible_sptes(struct kvm
*kvm
,
938 const struct kvm_memory_slot
*memslot
);
939 void kvm_mmu_slot_leaf_clear_dirty(struct kvm
*kvm
,
940 struct kvm_memory_slot
*memslot
);
941 void kvm_mmu_slot_largepage_remove_write_access(struct kvm
*kvm
,
942 struct kvm_memory_slot
*memslot
);
943 void kvm_mmu_slot_set_dirty(struct kvm
*kvm
,
944 struct kvm_memory_slot
*memslot
);
945 void kvm_mmu_clear_dirty_pt_masked(struct kvm
*kvm
,
946 struct kvm_memory_slot
*slot
,
947 gfn_t gfn_offset
, unsigned long mask
);
948 void kvm_mmu_zap_all(struct kvm
*kvm
);
949 void kvm_mmu_invalidate_mmio_sptes(struct kvm
*kvm
, struct kvm_memslots
*slots
);
950 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm
*kvm
);
951 void kvm_mmu_change_mmu_pages(struct kvm
*kvm
, unsigned int kvm_nr_mmu_pages
);
953 int load_pdptrs(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
, unsigned long cr3
);
955 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
956 const void *val
, int bytes
);
958 struct kvm_irq_mask_notifier
{
959 void (*func
)(struct kvm_irq_mask_notifier
*kimn
, bool masked
);
961 struct hlist_node link
;
964 void kvm_register_irq_mask_notifier(struct kvm
*kvm
, int irq
,
965 struct kvm_irq_mask_notifier
*kimn
);
966 void kvm_unregister_irq_mask_notifier(struct kvm
*kvm
, int irq
,
967 struct kvm_irq_mask_notifier
*kimn
);
968 void kvm_fire_mask_notifiers(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
,
971 extern bool tdp_enabled
;
973 u64
vcpu_tsc_khz(struct kvm_vcpu
*vcpu
);
975 /* control of guest tsc rate supported? */
976 extern bool kvm_has_tsc_control
;
977 /* minimum supported tsc_khz for guests */
978 extern u32 kvm_min_guest_tsc_khz
;
979 /* maximum supported tsc_khz for guests */
980 extern u32 kvm_max_guest_tsc_khz
;
982 enum emulation_result
{
983 EMULATE_DONE
, /* no further processing */
984 EMULATE_USER_EXIT
, /* kvm_run ready for userspace exit */
985 EMULATE_FAIL
, /* can't emulate this instruction */
988 #define EMULTYPE_NO_DECODE (1 << 0)
989 #define EMULTYPE_TRAP_UD (1 << 1)
990 #define EMULTYPE_SKIP (1 << 2)
991 #define EMULTYPE_RETRY (1 << 3)
992 #define EMULTYPE_NO_REEXECUTE (1 << 4)
993 int x86_emulate_instruction(struct kvm_vcpu
*vcpu
, unsigned long cr2
,
994 int emulation_type
, void *insn
, int insn_len
);
996 static inline int emulate_instruction(struct kvm_vcpu
*vcpu
,
999 return x86_emulate_instruction(vcpu
, 0, emulation_type
, NULL
, 0);
1002 void kvm_enable_efer_bits(u64
);
1003 bool kvm_valid_efer(struct kvm_vcpu
*vcpu
, u64 efer
);
1004 int kvm_get_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1005 int kvm_set_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1007 struct x86_emulate_ctxt
;
1009 int kvm_fast_pio_out(struct kvm_vcpu
*vcpu
, int size
, unsigned short port
);
1010 void kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
);
1011 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
);
1012 int kvm_vcpu_halt(struct kvm_vcpu
*vcpu
);
1013 int kvm_emulate_wbinvd(struct kvm_vcpu
*vcpu
);
1015 void kvm_get_segment(struct kvm_vcpu
*vcpu
, struct kvm_segment
*var
, int seg
);
1016 int kvm_load_segment_descriptor(struct kvm_vcpu
*vcpu
, u16 selector
, int seg
);
1017 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu
*vcpu
, u8 vector
);
1019 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int idt_index
,
1020 int reason
, bool has_error_code
, u32 error_code
);
1022 int kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
1023 int kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
1024 int kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
1025 int kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
1026 int kvm_set_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long val
);
1027 int kvm_get_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long *val
);
1028 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
);
1029 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
);
1030 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
1031 int kvm_set_xcr(struct kvm_vcpu
*vcpu
, u32 index
, u64 xcr
);
1033 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1034 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
1036 unsigned long kvm_get_rflags(struct kvm_vcpu
*vcpu
);
1037 void kvm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
1038 bool kvm_rdpmc(struct kvm_vcpu
*vcpu
);
1040 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
1041 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
1042 void kvm_requeue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
1043 void kvm_requeue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
1044 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
1045 int kvm_read_guest_page_mmu(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
,
1046 gfn_t gfn
, void *data
, int offset
, int len
,
1048 bool kvm_require_cpl(struct kvm_vcpu
*vcpu
, int required_cpl
);
1049 bool kvm_require_dr(struct kvm_vcpu
*vcpu
, int dr
);
1051 static inline int __kvm_irq_line_state(unsigned long *irq_state
,
1052 int irq_source_id
, int level
)
1054 /* Logical OR for level trig interrupt */
1056 __set_bit(irq_source_id
, irq_state
);
1058 __clear_bit(irq_source_id
, irq_state
);
1060 return !!(*irq_state
);
1063 int kvm_pic_set_irq(struct kvm_pic
*pic
, int irq
, int irq_source_id
, int level
);
1064 void kvm_pic_clear_all(struct kvm_pic
*pic
, int irq_source_id
);
1066 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
);
1068 void kvm_mmu_pte_write(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
1069 const u8
*new, int bytes
);
1070 int kvm_mmu_unprotect_page(struct kvm
*kvm
, gfn_t gfn
);
1071 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
*vcpu
, gva_t gva
);
1072 void __kvm_mmu_free_some_pages(struct kvm_vcpu
*vcpu
);
1073 int kvm_mmu_load(struct kvm_vcpu
*vcpu
);
1074 void kvm_mmu_unload(struct kvm_vcpu
*vcpu
);
1075 void kvm_mmu_sync_roots(struct kvm_vcpu
*vcpu
);
1076 gpa_t
translate_nested_gpa(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
1077 struct x86_exception
*exception
);
1078 gpa_t
kvm_mmu_gva_to_gpa_read(struct kvm_vcpu
*vcpu
, gva_t gva
,
1079 struct x86_exception
*exception
);
1080 gpa_t
kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu
*vcpu
, gva_t gva
,
1081 struct x86_exception
*exception
);
1082 gpa_t
kvm_mmu_gva_to_gpa_write(struct kvm_vcpu
*vcpu
, gva_t gva
,
1083 struct x86_exception
*exception
);
1084 gpa_t
kvm_mmu_gva_to_gpa_system(struct kvm_vcpu
*vcpu
, gva_t gva
,
1085 struct x86_exception
*exception
);
1087 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
);
1089 int kvm_mmu_page_fault(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 error_code
,
1090 void *insn
, int insn_len
);
1091 void kvm_mmu_invlpg(struct kvm_vcpu
*vcpu
, gva_t gva
);
1092 void kvm_mmu_new_cr3(struct kvm_vcpu
*vcpu
);
1094 void kvm_enable_tdp(void);
1095 void kvm_disable_tdp(void);
1097 static inline gpa_t
translate_gpa(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
,
1098 struct x86_exception
*exception
)
1103 static inline struct kvm_mmu_page
*page_header(hpa_t shadow_page
)
1105 struct page
*page
= pfn_to_page(shadow_page
>> PAGE_SHIFT
);
1107 return (struct kvm_mmu_page
*)page_private(page
);
1110 static inline u16
kvm_read_ldt(void)
1113 asm("sldt %0" : "=g"(ldt
));
1117 static inline void kvm_load_ldt(u16 sel
)
1119 asm("lldt %0" : : "rm"(sel
));
1122 #ifdef CONFIG_X86_64
1123 static inline unsigned long read_msr(unsigned long msr
)
1132 static inline u32
get_rdx_init_val(void)
1134 return 0x600; /* P6 family */
1137 static inline void kvm_inject_gp(struct kvm_vcpu
*vcpu
, u32 error_code
)
1139 kvm_queue_exception_e(vcpu
, GP_VECTOR
, error_code
);
1142 static inline u64
get_canonical(u64 la
)
1144 return ((int64_t)la
<< 16) >> 16;
1147 static inline bool is_noncanonical_address(u64 la
)
1149 #ifdef CONFIG_X86_64
1150 return get_canonical(la
) != la
;
1156 #define TSS_IOPB_BASE_OFFSET 0x66
1157 #define TSS_BASE_SIZE 0x68
1158 #define TSS_IOPB_SIZE (65536 / 8)
1159 #define TSS_REDIRECTION_SIZE (256 / 8)
1160 #define RMODE_TSS_SIZE \
1161 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
1164 TASK_SWITCH_CALL
= 0,
1165 TASK_SWITCH_IRET
= 1,
1166 TASK_SWITCH_JMP
= 2,
1167 TASK_SWITCH_GATE
= 3,
1170 #define HF_GIF_MASK (1 << 0)
1171 #define HF_HIF_MASK (1 << 1)
1172 #define HF_VINTR_MASK (1 << 2)
1173 #define HF_NMI_MASK (1 << 3)
1174 #define HF_IRET_MASK (1 << 4)
1175 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
1176 #define HF_SMM_MASK (1 << 6)
1177 #define HF_SMM_INSIDE_NMI_MASK (1 << 7)
1179 #define __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
1180 #define KVM_ADDRESS_SPACE_NUM 2
1182 #define kvm_arch_vcpu_memslots_id(vcpu) ((vcpu)->arch.hflags & HF_SMM_MASK ? 1 : 0)
1183 #define kvm_memslots_for_spte_role(kvm, role) __kvm_memslots(kvm, (role).smm)
1186 * Hardware virtualization extension instructions may fault if a
1187 * reboot turns off virtualization while processes are running.
1188 * Trap the fault and ignore the instruction if that happens.
1190 asmlinkage
void kvm_spurious_fault(void);
1192 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
1193 "666: " insn "\n\t" \
1195 ".pushsection .fixup, \"ax\" \n" \
1197 cleanup_insn "\n\t" \
1198 "cmpb $0, kvm_rebooting \n\t" \
1200 __ASM_SIZE(push) " $666b \n\t" \
1201 "call kvm_spurious_fault \n\t" \
1202 ".popsection \n\t" \
1203 _ASM_EXTABLE(666b, 667b)
1205 #define __kvm_handle_fault_on_reboot(insn) \
1206 ____kvm_handle_fault_on_reboot(insn, "")
1208 #define KVM_ARCH_WANT_MMU_NOTIFIER
1209 int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
1210 int kvm_unmap_hva_range(struct kvm
*kvm
, unsigned long start
, unsigned long end
);
1211 int kvm_age_hva(struct kvm
*kvm
, unsigned long start
, unsigned long end
);
1212 int kvm_test_age_hva(struct kvm
*kvm
, unsigned long hva
);
1213 void kvm_set_spte_hva(struct kvm
*kvm
, unsigned long hva
, pte_t pte
);
1214 int kvm_cpu_has_injectable_intr(struct kvm_vcpu
*v
);
1215 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
);
1216 int kvm_arch_interrupt_allowed(struct kvm_vcpu
*vcpu
);
1217 int kvm_cpu_get_interrupt(struct kvm_vcpu
*v
);
1218 void kvm_vcpu_reset(struct kvm_vcpu
*vcpu
, bool init_event
);
1219 void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu
*vcpu
);
1220 void kvm_arch_mmu_notifier_invalidate_page(struct kvm
*kvm
,
1221 unsigned long address
);
1223 void kvm_define_shared_msr(unsigned index
, u32 msr
);
1224 int kvm_set_shared_msr(unsigned index
, u64 val
, u64 mask
);
1226 unsigned long kvm_get_linear_rip(struct kvm_vcpu
*vcpu
);
1227 bool kvm_is_linear_rip(struct kvm_vcpu
*vcpu
, unsigned long linear_rip
);
1229 void kvm_arch_async_page_not_present(struct kvm_vcpu
*vcpu
,
1230 struct kvm_async_pf
*work
);
1231 void kvm_arch_async_page_present(struct kvm_vcpu
*vcpu
,
1232 struct kvm_async_pf
*work
);
1233 void kvm_arch_async_page_ready(struct kvm_vcpu
*vcpu
,
1234 struct kvm_async_pf
*work
);
1235 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu
*vcpu
);
1236 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
1238 void kvm_complete_insn_gp(struct kvm_vcpu
*vcpu
, int err
);
1240 int kvm_is_in_guest(void);
1242 int __x86_set_memory_region(struct kvm
*kvm
,
1243 const struct kvm_userspace_memory_region
*mem
);
1244 int x86_set_memory_region(struct kvm
*kvm
,
1245 const struct kvm_userspace_memory_region
*mem
);
1246 bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu
*vcpu
);
1247 bool kvm_vcpu_is_bsp(struct kvm_vcpu
*vcpu
);
1249 bool kvm_intr_is_single_vcpu(struct kvm
*kvm
, struct kvm_lapic_irq
*irq
,
1250 struct kvm_vcpu
**dest_vcpu
);
1252 void kvm_set_msi_irq(struct kvm_kernel_irq_routing_entry
*e
,
1253 struct kvm_lapic_irq
*irq
);
1254 #endif /* _ASM_X86_KVM_HOST_H */