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 254
35 #define KVM_SOFT_MAX_VCPUS 160
36 #define KVM_USER_MEM_SLOTS 125
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_MMIO_SIZE 16
43 #define KVM_PIO_PAGE_OFFSET 1
44 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
46 #define CR0_RESERVED_BITS \
47 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
48 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
49 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
51 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
52 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
53 #define CR3_PCID_ENABLED_RESERVED_BITS 0xFFFFFF0000000000ULL
54 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
55 0xFFFFFF0000000000ULL)
56 #define CR4_RESERVED_BITS \
57 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
58 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
59 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
60 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
61 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
63 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
67 #define INVALID_PAGE (~(hpa_t)0)
68 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
70 #define UNMAPPED_GVA (~(gpa_t)0)
72 /* KVM Hugepage definitions for x86 */
73 #define KVM_NR_PAGE_SIZES 3
74 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
75 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
76 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
77 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
78 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
80 #define SELECTOR_TI_MASK (1 << 2)
81 #define SELECTOR_RPL_MASK 0x03
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
97 extern raw_spinlock_t kvm_lock
;
98 extern struct list_head vm_list
;
128 VCPU_EXREG_PDPTR
= NR_VCPU_REGS
,
146 #include <asm/kvm_emulate.h>
148 #define KVM_NR_MEM_OBJS 40
150 #define KVM_NR_DB_REGS 4
152 #define DR6_BD (1 << 13)
153 #define DR6_BS (1 << 14)
154 #define DR6_FIXED_1 0xffff0ff0
155 #define DR6_VOLATILE 0x0000e00f
157 #define DR7_BP_EN_MASK 0x000000ff
158 #define DR7_GE (1 << 9)
159 #define DR7_GD (1 << 13)
160 #define DR7_FIXED_1 0x00000400
161 #define DR7_VOLATILE 0xffff23ff
163 /* apic attention bits */
164 #define KVM_APIC_CHECK_VAPIC 0
166 * The following bit is set with PV-EOI, unset on EOI.
167 * We detect PV-EOI changes by guest by comparing
168 * this bit with PV-EOI in guest memory.
169 * See the implementation in apic_update_pv_eoi.
171 #define KVM_APIC_PV_EOI_PENDING 1
174 * We don't want allocation failures within the mmu code, so we preallocate
175 * enough memory for a single page fault in a cache.
177 struct kvm_mmu_memory_cache
{
179 void *objects
[KVM_NR_MEM_OBJS
];
183 * kvm_mmu_page_role, below, is defined as:
185 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
186 * bits 4:7 - page table level for this shadow (1-4)
187 * bits 8:9 - page table quadrant for 2-level guests
188 * bit 16 - direct mapping of virtual to physical mapping at gfn
189 * used for real mode and two-dimensional paging
190 * bits 17:19 - common access permissions for all ptes in this shadow page
192 union kvm_mmu_page_role
{
198 unsigned pad_for_nice_hex_output
:6;
204 unsigned smep_andnot_wp
:1;
208 struct kvm_mmu_page
{
209 struct list_head link
;
210 struct hlist_node hash_link
;
213 * The following two entries are used to key the shadow page in the
217 union kvm_mmu_page_role role
;
220 /* hold the gfn of each spte inside spt */
223 int root_count
; /* Currently serving as active root */
224 unsigned int unsync_children
;
225 unsigned long parent_ptes
; /* Reverse mapping for parent_pte */
226 DECLARE_BITMAP(unsync_child_bitmap
, 512);
229 int clear_spte_count
;
232 int write_flooding_count
;
235 struct kvm_pio_request
{
243 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
244 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
248 void (*new_cr3
)(struct kvm_vcpu
*vcpu
);
249 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long root
);
250 unsigned long (*get_cr3
)(struct kvm_vcpu
*vcpu
);
251 u64 (*get_pdptr
)(struct kvm_vcpu
*vcpu
, int index
);
252 int (*page_fault
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 err
,
254 void (*inject_page_fault
)(struct kvm_vcpu
*vcpu
,
255 struct x86_exception
*fault
);
256 void (*free
)(struct kvm_vcpu
*vcpu
);
257 gpa_t (*gva_to_gpa
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 access
,
258 struct x86_exception
*exception
);
259 gpa_t (*translate_gpa
)(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
);
260 int (*sync_page
)(struct kvm_vcpu
*vcpu
,
261 struct kvm_mmu_page
*sp
);
262 void (*invlpg
)(struct kvm_vcpu
*vcpu
, gva_t gva
);
263 void (*update_pte
)(struct kvm_vcpu
*vcpu
, struct kvm_mmu_page
*sp
,
264 u64
*spte
, const void *pte
);
267 int shadow_root_level
;
268 union kvm_mmu_page_role base_role
;
272 * Bitmap; bit set = permission fault
273 * Byte index: page fault error code [4:1]
274 * Bit index: pte permissions in ACC_* format
280 u64 rsvd_bits_mask
[2][4];
283 * Bitmap: bit set = last pte in walk
284 * index[0:1]: level (zero-based)
291 u64 pdptrs
[4]; /* pae */
304 struct perf_event
*perf_event
;
305 struct kvm_vcpu
*vcpu
;
309 unsigned nr_arch_gp_counters
;
310 unsigned nr_arch_fixed_counters
;
311 unsigned available_event_types
;
316 u64 counter_bitmask
[2];
317 u64 global_ctrl_mask
;
319 struct kvm_pmc gp_counters
[INTEL_PMC_MAX_GENERIC
];
320 struct kvm_pmc fixed_counters
[INTEL_PMC_MAX_FIXED
];
321 struct irq_work irq_work
;
325 struct kvm_vcpu_arch
{
327 * rip and regs accesses must go through
328 * kvm_{register,rip}_{read,write} functions.
330 unsigned long regs
[NR_VCPU_REGS
];
335 unsigned long cr0_guest_owned_bits
;
339 unsigned long cr4_guest_owned_bits
;
344 struct kvm_lapic
*apic
; /* kernel irqchip context */
345 unsigned long apic_attention
;
346 int32_t apic_arb_prio
;
349 u64 ia32_misc_enable_msr
;
350 bool tpr_access_reporting
;
353 * Paging state of the vcpu
355 * If the vcpu runs in guest mode with two level paging this still saves
356 * the paging mode of the l1 guest. This context is always used to
362 * Paging state of an L2 guest (used for nested npt)
364 * This context will save all necessary information to walk page tables
365 * of the an L2 guest. This context is only initialized for page table
366 * walking and not for faulting since we never handle l2 page faults on
369 struct kvm_mmu nested_mmu
;
372 * Pointer to the mmu context currently used for
373 * gva_to_gpa translations.
375 struct kvm_mmu
*walk_mmu
;
377 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache
;
378 struct kvm_mmu_memory_cache mmu_page_cache
;
379 struct kvm_mmu_memory_cache mmu_page_header_cache
;
381 struct fpu guest_fpu
;
384 struct kvm_pio_request pio
;
387 u8 event_exit_inst_len
;
389 struct kvm_queued_exception
{
397 struct kvm_queued_interrupt
{
403 int halt_request
; /* real mode on Intel only */
406 struct kvm_cpuid_entry2 cpuid_entries
[KVM_MAX_CPUID_ENTRIES
];
407 /* emulate context */
409 struct x86_emulate_ctxt emulate_ctxt
;
410 bool emulate_regs_need_sync_to_vcpu
;
411 bool emulate_regs_need_sync_from_vcpu
;
412 int (*complete_userspace_io
)(struct kvm_vcpu
*vcpu
);
415 struct pvclock_vcpu_time_info hv_clock
;
416 unsigned int hw_tsc_khz
;
417 unsigned int time_offset
;
418 struct page
*time_page
;
419 /* set guest stopped flag in pvclock flags field */
420 bool pvclock_set_guest_stopped_request
;
426 struct gfn_to_hva_cache stime
;
427 struct kvm_steal_time steal
;
433 u64 tsc_offset_adjustment
;
436 u8 this_tsc_generation
;
438 bool tsc_always_catchup
;
439 s8 virtual_tsc_shift
;
440 u32 virtual_tsc_mult
;
442 s64 ia32_tsc_adjust_msr
;
444 atomic_t nmi_queued
; /* unprocessed asynchronous NMIs */
445 unsigned nmi_pending
; /* NMI queued after currently running handler */
446 bool nmi_injected
; /* Trying to inject an NMI this entry */
448 struct mtrr_state_type mtrr_state
;
452 unsigned long db
[KVM_NR_DB_REGS
];
455 unsigned long eff_db
[KVM_NR_DB_REGS
];
456 unsigned long guest_debug_dr7
;
463 /* Cache MMIO info */
470 /* used for guest single stepping over the given code position */
471 unsigned long singlestep_rip
;
473 /* fields used by HYPER-V emulation */
476 cpumask_var_t wbinvd_dirty_mask
;
478 unsigned long last_retry_eip
;
479 unsigned long last_retry_addr
;
483 gfn_t gfns
[roundup_pow_of_two(ASYNC_PF_PER_VCPU
)];
484 struct gfn_to_hva_cache data
;
490 /* OSVW MSRs (AMD only) */
498 struct gfn_to_hva_cache data
;
502 * Indicate whether the access faults on its page table in guest
503 * which is set when fix page fault and used to detect unhandeable
506 bool write_fault_to_shadow_pgtable
;
509 struct kvm_lpage_info
{
513 struct kvm_arch_memory_slot
{
514 unsigned long *rmap
[KVM_NR_PAGE_SIZES
];
515 struct kvm_lpage_info
*lpage_info
[KVM_NR_PAGE_SIZES
- 1];
518 struct kvm_apic_map
{
521 /* fields bellow are used to decode ldr values in different modes */
522 u32 cid_shift
, cid_mask
, lid_mask
;
523 struct kvm_lapic
*phys_map
[256];
524 /* first index is cluster id second is cpu id in a cluster */
525 struct kvm_lapic
*logical_map
[16][16];
529 unsigned int n_used_mmu_pages
;
530 unsigned int n_requested_mmu_pages
;
531 unsigned int n_max_mmu_pages
;
532 unsigned int indirect_shadow_pages
;
533 struct hlist_head mmu_page_hash
[KVM_NUM_MMU_PAGES
];
535 * Hash table of struct kvm_mmu_page.
537 struct list_head active_mmu_pages
;
538 struct list_head assigned_dev_head
;
539 struct iommu_domain
*iommu_domain
;
541 struct kvm_pic
*vpic
;
542 struct kvm_ioapic
*vioapic
;
543 struct kvm_pit
*vpit
;
544 int vapics_in_nmi_mode
;
545 struct mutex apic_map_lock
;
546 struct kvm_apic_map
*apic_map
;
548 unsigned int tss_addr
;
549 struct page
*apic_access_page
;
553 struct page
*ept_identity_pagetable
;
554 bool ept_identity_pagetable_done
;
555 gpa_t ept_identity_map_addr
;
557 unsigned long irq_sources_bitmap
;
559 raw_spinlock_t tsc_write_lock
;
566 u8 cur_tsc_generation
;
567 int nr_vcpus_matched_tsc
;
569 spinlock_t pvclock_gtod_sync_lock
;
570 bool use_master_clock
;
571 u64 master_kernel_ns
;
572 cycle_t master_cycle_now
;
574 struct kvm_xen_hvm_config xen_hvm_config
;
576 /* fields used by HYPER-V emulation */
580 #ifdef CONFIG_KVM_MMU_AUDIT
586 u32 mmu_shadow_zapped
;
594 u32 remote_tlb_flush
;
598 struct kvm_vcpu_stat
{
608 u32 irq_window_exits
;
609 u32 nmi_window_exits
;
612 u32 request_irq_exits
;
614 u32 host_state_reload
;
618 u32 insn_emulation_fail
;
624 struct x86_instruction_info
;
633 int (*cpu_has_kvm_support
)(void); /* __init */
634 int (*disabled_by_bios
)(void); /* __init */
635 int (*hardware_enable
)(void *dummy
);
636 void (*hardware_disable
)(void *dummy
);
637 void (*check_processor_compatibility
)(void *rtn
);
638 int (*hardware_setup
)(void); /* __init */
639 void (*hardware_unsetup
)(void); /* __exit */
640 bool (*cpu_has_accelerated_tpr
)(void);
641 void (*cpuid_update
)(struct kvm_vcpu
*vcpu
);
643 /* Create, but do not attach this VCPU */
644 struct kvm_vcpu
*(*vcpu_create
)(struct kvm
*kvm
, unsigned id
);
645 void (*vcpu_free
)(struct kvm_vcpu
*vcpu
);
646 int (*vcpu_reset
)(struct kvm_vcpu
*vcpu
);
648 void (*prepare_guest_switch
)(struct kvm_vcpu
*vcpu
);
649 void (*vcpu_load
)(struct kvm_vcpu
*vcpu
, int cpu
);
650 void (*vcpu_put
)(struct kvm_vcpu
*vcpu
);
652 void (*update_db_bp_intercept
)(struct kvm_vcpu
*vcpu
);
653 int (*get_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*pdata
);
654 int (*set_msr
)(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
655 u64 (*get_segment_base
)(struct kvm_vcpu
*vcpu
, int seg
);
656 void (*get_segment
)(struct kvm_vcpu
*vcpu
,
657 struct kvm_segment
*var
, int seg
);
658 int (*get_cpl
)(struct kvm_vcpu
*vcpu
);
659 void (*set_segment
)(struct kvm_vcpu
*vcpu
,
660 struct kvm_segment
*var
, int seg
);
661 void (*get_cs_db_l_bits
)(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
662 void (*decache_cr0_guest_bits
)(struct kvm_vcpu
*vcpu
);
663 void (*decache_cr3
)(struct kvm_vcpu
*vcpu
);
664 void (*decache_cr4_guest_bits
)(struct kvm_vcpu
*vcpu
);
665 void (*set_cr0
)(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
666 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
667 int (*set_cr4
)(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
668 void (*set_efer
)(struct kvm_vcpu
*vcpu
, u64 efer
);
669 void (*get_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
670 void (*set_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
671 void (*get_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
672 void (*set_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
673 void (*set_dr7
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
674 void (*cache_reg
)(struct kvm_vcpu
*vcpu
, enum kvm_reg reg
);
675 unsigned long (*get_rflags
)(struct kvm_vcpu
*vcpu
);
676 void (*set_rflags
)(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
677 void (*fpu_activate
)(struct kvm_vcpu
*vcpu
);
678 void (*fpu_deactivate
)(struct kvm_vcpu
*vcpu
);
680 void (*tlb_flush
)(struct kvm_vcpu
*vcpu
);
682 void (*run
)(struct kvm_vcpu
*vcpu
);
683 int (*handle_exit
)(struct kvm_vcpu
*vcpu
);
684 void (*skip_emulated_instruction
)(struct kvm_vcpu
*vcpu
);
685 void (*set_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
686 u32 (*get_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
687 void (*patch_hypercall
)(struct kvm_vcpu
*vcpu
,
688 unsigned char *hypercall_addr
);
689 void (*set_irq
)(struct kvm_vcpu
*vcpu
);
690 void (*set_nmi
)(struct kvm_vcpu
*vcpu
);
691 void (*queue_exception
)(struct kvm_vcpu
*vcpu
, unsigned nr
,
692 bool has_error_code
, u32 error_code
,
694 void (*cancel_injection
)(struct kvm_vcpu
*vcpu
);
695 int (*interrupt_allowed
)(struct kvm_vcpu
*vcpu
);
696 int (*nmi_allowed
)(struct kvm_vcpu
*vcpu
);
697 bool (*get_nmi_mask
)(struct kvm_vcpu
*vcpu
);
698 void (*set_nmi_mask
)(struct kvm_vcpu
*vcpu
, bool masked
);
699 void (*enable_nmi_window
)(struct kvm_vcpu
*vcpu
);
700 void (*enable_irq_window
)(struct kvm_vcpu
*vcpu
);
701 void (*update_cr8_intercept
)(struct kvm_vcpu
*vcpu
, int tpr
, int irr
);
702 int (*vm_has_apicv
)(struct kvm
*kvm
);
703 void (*hwapic_irr_update
)(struct kvm_vcpu
*vcpu
, int max_irr
);
704 void (*hwapic_isr_update
)(struct kvm
*kvm
, int isr
);
705 void (*load_eoi_exitmap
)(struct kvm_vcpu
*vcpu
, u64
*eoi_exit_bitmap
);
706 void (*set_virtual_x2apic_mode
)(struct kvm_vcpu
*vcpu
, bool set
);
707 int (*set_tss_addr
)(struct kvm
*kvm
, unsigned int addr
);
708 int (*get_tdp_level
)(void);
709 u64 (*get_mt_mask
)(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool is_mmio
);
710 int (*get_lpage_level
)(void);
711 bool (*rdtscp_supported
)(void);
712 bool (*invpcid_supported
)(void);
713 void (*adjust_tsc_offset
)(struct kvm_vcpu
*vcpu
, s64 adjustment
, bool host
);
715 void (*set_tdp_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
717 void (*set_supported_cpuid
)(u32 func
, struct kvm_cpuid_entry2
*entry
);
719 bool (*has_wbinvd_exit
)(void);
721 void (*set_tsc_khz
)(struct kvm_vcpu
*vcpu
, u32 user_tsc_khz
, bool scale
);
722 u64 (*read_tsc_offset
)(struct kvm_vcpu
*vcpu
);
723 void (*write_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 offset
);
725 u64 (*compute_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 target_tsc
);
726 u64 (*read_l1_tsc
)(struct kvm_vcpu
*vcpu
, u64 host_tsc
);
728 void (*get_exit_info
)(struct kvm_vcpu
*vcpu
, u64
*info1
, u64
*info2
);
730 int (*check_intercept
)(struct kvm_vcpu
*vcpu
,
731 struct x86_instruction_info
*info
,
732 enum x86_intercept_stage stage
);
735 struct kvm_arch_async_pf
{
742 extern struct kvm_x86_ops
*kvm_x86_ops
;
744 static inline void adjust_tsc_offset_guest(struct kvm_vcpu
*vcpu
,
747 kvm_x86_ops
->adjust_tsc_offset(vcpu
, adjustment
, false);
750 static inline void adjust_tsc_offset_host(struct kvm_vcpu
*vcpu
, s64 adjustment
)
752 kvm_x86_ops
->adjust_tsc_offset(vcpu
, adjustment
, true);
755 int kvm_mmu_module_init(void);
756 void kvm_mmu_module_exit(void);
758 void kvm_mmu_destroy(struct kvm_vcpu
*vcpu
);
759 int kvm_mmu_create(struct kvm_vcpu
*vcpu
);
760 int kvm_mmu_setup(struct kvm_vcpu
*vcpu
);
761 void kvm_mmu_set_mask_ptes(u64 user_mask
, u64 accessed_mask
,
762 u64 dirty_mask
, u64 nx_mask
, u64 x_mask
);
764 int kvm_mmu_reset_context(struct kvm_vcpu
*vcpu
);
765 void kvm_mmu_slot_remove_write_access(struct kvm
*kvm
, int slot
);
766 void kvm_mmu_write_protect_pt_masked(struct kvm
*kvm
,
767 struct kvm_memory_slot
*slot
,
768 gfn_t gfn_offset
, unsigned long mask
);
769 void kvm_mmu_zap_all(struct kvm
*kvm
);
770 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm
*kvm
);
771 void kvm_mmu_change_mmu_pages(struct kvm
*kvm
, unsigned int kvm_nr_mmu_pages
);
773 int load_pdptrs(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
, unsigned long cr3
);
775 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
776 const void *val
, int bytes
);
777 u8
kvm_get_guest_memory_type(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
779 extern bool tdp_enabled
;
781 u64
vcpu_tsc_khz(struct kvm_vcpu
*vcpu
);
783 /* control of guest tsc rate supported? */
784 extern bool kvm_has_tsc_control
;
785 /* minimum supported tsc_khz for guests */
786 extern u32 kvm_min_guest_tsc_khz
;
787 /* maximum supported tsc_khz for guests */
788 extern u32 kvm_max_guest_tsc_khz
;
790 enum emulation_result
{
791 EMULATE_DONE
, /* no further processing */
792 EMULATE_DO_MMIO
, /* kvm_run filled with mmio request */
793 EMULATE_FAIL
, /* can't emulate this instruction */
796 #define EMULTYPE_NO_DECODE (1 << 0)
797 #define EMULTYPE_TRAP_UD (1 << 1)
798 #define EMULTYPE_SKIP (1 << 2)
799 #define EMULTYPE_RETRY (1 << 3)
800 int x86_emulate_instruction(struct kvm_vcpu
*vcpu
, unsigned long cr2
,
801 int emulation_type
, void *insn
, int insn_len
);
803 static inline int emulate_instruction(struct kvm_vcpu
*vcpu
,
806 return x86_emulate_instruction(vcpu
, 0, emulation_type
, NULL
, 0);
809 void kvm_enable_efer_bits(u64
);
810 int kvm_get_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*data
);
811 int kvm_set_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
813 struct x86_emulate_ctxt
;
815 int kvm_fast_pio_out(struct kvm_vcpu
*vcpu
, int size
, unsigned short port
);
816 void kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
);
817 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
);
818 int kvm_emulate_wbinvd(struct kvm_vcpu
*vcpu
);
820 void kvm_get_segment(struct kvm_vcpu
*vcpu
, struct kvm_segment
*var
, int seg
);
821 int kvm_load_segment_descriptor(struct kvm_vcpu
*vcpu
, u16 selector
, int seg
);
823 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int idt_index
,
824 int reason
, bool has_error_code
, u32 error_code
);
826 int kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
827 int kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
828 int kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
829 int kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
830 int kvm_set_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long val
);
831 int kvm_get_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long *val
);
832 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
);
833 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
);
834 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
835 int kvm_set_xcr(struct kvm_vcpu
*vcpu
, u32 index
, u64 xcr
);
837 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
);
838 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
);
840 unsigned long kvm_get_rflags(struct kvm_vcpu
*vcpu
);
841 void kvm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
842 bool kvm_rdpmc(struct kvm_vcpu
*vcpu
);
844 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
845 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
846 void kvm_requeue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
847 void kvm_requeue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
848 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
849 int kvm_read_guest_page_mmu(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
,
850 gfn_t gfn
, void *data
, int offset
, int len
,
852 void kvm_propagate_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
853 bool kvm_require_cpl(struct kvm_vcpu
*vcpu
, int required_cpl
);
855 static inline int __kvm_irq_line_state(unsigned long *irq_state
,
856 int irq_source_id
, int level
)
858 /* Logical OR for level trig interrupt */
860 __set_bit(irq_source_id
, irq_state
);
862 __clear_bit(irq_source_id
, irq_state
);
864 return !!(*irq_state
);
867 int kvm_pic_set_irq(struct kvm_pic
*pic
, int irq
, int irq_source_id
, int level
);
868 void kvm_pic_clear_all(struct kvm_pic
*pic
, int irq_source_id
);
870 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
);
872 int fx_init(struct kvm_vcpu
*vcpu
);
874 void kvm_mmu_flush_tlb(struct kvm_vcpu
*vcpu
);
875 void kvm_mmu_pte_write(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
876 const u8
*new, int bytes
);
877 int kvm_mmu_unprotect_page(struct kvm
*kvm
, gfn_t gfn
);
878 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
*vcpu
, gva_t gva
);
879 void __kvm_mmu_free_some_pages(struct kvm_vcpu
*vcpu
);
880 int kvm_mmu_load(struct kvm_vcpu
*vcpu
);
881 void kvm_mmu_unload(struct kvm_vcpu
*vcpu
);
882 void kvm_mmu_sync_roots(struct kvm_vcpu
*vcpu
);
883 gpa_t
translate_nested_gpa(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
);
884 gpa_t
kvm_mmu_gva_to_gpa_read(struct kvm_vcpu
*vcpu
, gva_t gva
,
885 struct x86_exception
*exception
);
886 gpa_t
kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu
*vcpu
, gva_t gva
,
887 struct x86_exception
*exception
);
888 gpa_t
kvm_mmu_gva_to_gpa_write(struct kvm_vcpu
*vcpu
, gva_t gva
,
889 struct x86_exception
*exception
);
890 gpa_t
kvm_mmu_gva_to_gpa_system(struct kvm_vcpu
*vcpu
, gva_t gva
,
891 struct x86_exception
*exception
);
893 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
);
895 int kvm_mmu_page_fault(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 error_code
,
896 void *insn
, int insn_len
);
897 void kvm_mmu_invlpg(struct kvm_vcpu
*vcpu
, gva_t gva
);
899 void kvm_enable_tdp(void);
900 void kvm_disable_tdp(void);
902 int complete_pio(struct kvm_vcpu
*vcpu
);
903 bool kvm_check_iopl(struct kvm_vcpu
*vcpu
);
905 static inline gpa_t
translate_gpa(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
)
910 static inline struct kvm_mmu_page
*page_header(hpa_t shadow_page
)
912 struct page
*page
= pfn_to_page(shadow_page
>> PAGE_SHIFT
);
914 return (struct kvm_mmu_page
*)page_private(page
);
917 static inline u16
kvm_read_ldt(void)
920 asm("sldt %0" : "=g"(ldt
));
924 static inline void kvm_load_ldt(u16 sel
)
926 asm("lldt %0" : : "rm"(sel
));
930 static inline unsigned long read_msr(unsigned long msr
)
939 static inline u32
get_rdx_init_val(void)
941 return 0x600; /* P6 family */
944 static inline void kvm_inject_gp(struct kvm_vcpu
*vcpu
, u32 error_code
)
946 kvm_queue_exception_e(vcpu
, GP_VECTOR
, error_code
);
949 #define TSS_IOPB_BASE_OFFSET 0x66
950 #define TSS_BASE_SIZE 0x68
951 #define TSS_IOPB_SIZE (65536 / 8)
952 #define TSS_REDIRECTION_SIZE (256 / 8)
953 #define RMODE_TSS_SIZE \
954 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
957 TASK_SWITCH_CALL
= 0,
958 TASK_SWITCH_IRET
= 1,
960 TASK_SWITCH_GATE
= 3,
963 #define HF_GIF_MASK (1 << 0)
964 #define HF_HIF_MASK (1 << 1)
965 #define HF_VINTR_MASK (1 << 2)
966 #define HF_NMI_MASK (1 << 3)
967 #define HF_IRET_MASK (1 << 4)
968 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
971 * Hardware virtualization extension instructions may fault if a
972 * reboot turns off virtualization while processes are running.
973 * Trap the fault and ignore the instruction if that happens.
975 asmlinkage
void kvm_spurious_fault(void);
976 extern bool kvm_rebooting
;
978 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
979 "666: " insn "\n\t" \
981 ".pushsection .fixup, \"ax\" \n" \
983 cleanup_insn "\n\t" \
984 "cmpb $0, kvm_rebooting \n\t" \
986 __ASM_SIZE(push) " $666b \n\t" \
987 "call kvm_spurious_fault \n\t" \
989 _ASM_EXTABLE(666b, 667b)
991 #define __kvm_handle_fault_on_reboot(insn) \
992 ____kvm_handle_fault_on_reboot(insn, "")
994 #define KVM_ARCH_WANT_MMU_NOTIFIER
995 int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
996 int kvm_unmap_hva_range(struct kvm
*kvm
, unsigned long start
, unsigned long end
);
997 int kvm_age_hva(struct kvm
*kvm
, unsigned long hva
);
998 int kvm_test_age_hva(struct kvm
*kvm
, unsigned long hva
);
999 void kvm_set_spte_hva(struct kvm
*kvm
, unsigned long hva
, pte_t pte
);
1000 int cpuid_maxphyaddr(struct kvm_vcpu
*vcpu
);
1001 int kvm_cpu_has_injectable_intr(struct kvm_vcpu
*v
);
1002 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
);
1003 int kvm_arch_interrupt_allowed(struct kvm_vcpu
*vcpu
);
1004 int kvm_cpu_get_interrupt(struct kvm_vcpu
*v
);
1006 void kvm_define_shared_msr(unsigned index
, u32 msr
);
1007 void kvm_set_shared_msr(unsigned index
, u64 val
, u64 mask
);
1009 bool kvm_is_linear_rip(struct kvm_vcpu
*vcpu
, unsigned long linear_rip
);
1011 void kvm_arch_async_page_not_present(struct kvm_vcpu
*vcpu
,
1012 struct kvm_async_pf
*work
);
1013 void kvm_arch_async_page_present(struct kvm_vcpu
*vcpu
,
1014 struct kvm_async_pf
*work
);
1015 void kvm_arch_async_page_ready(struct kvm_vcpu
*vcpu
,
1016 struct kvm_async_pf
*work
);
1017 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu
*vcpu
);
1018 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
1020 void kvm_complete_insn_gp(struct kvm_vcpu
*vcpu
, int err
);
1022 int kvm_is_in_guest(void);
1024 void kvm_pmu_init(struct kvm_vcpu
*vcpu
);
1025 void kvm_pmu_destroy(struct kvm_vcpu
*vcpu
);
1026 void kvm_pmu_reset(struct kvm_vcpu
*vcpu
);
1027 void kvm_pmu_cpuid_update(struct kvm_vcpu
*vcpu
);
1028 bool kvm_pmu_msr(struct kvm_vcpu
*vcpu
, u32 msr
);
1029 int kvm_pmu_get_msr(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*data
);
1030 int kvm_pmu_set_msr(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
);
1031 int kvm_pmu_read_pmc(struct kvm_vcpu
*vcpu
, unsigned pmc
, u64
*data
);
1032 void kvm_handle_pmu_event(struct kvm_vcpu
*vcpu
);
1033 void kvm_deliver_pmi(struct kvm_vcpu
*vcpu
);
1035 #endif /* _ASM_X86_KVM_HOST_H */