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>
20 #include <linux/kvm.h>
21 #include <linux/kvm_para.h>
22 #include <linux/kvm_types.h>
24 #include <asm/pvclock-abi.h>
27 #include <asm/msr-index.h>
29 #define KVM_MAX_VCPUS 64
30 #define KVM_MEMORY_SLOTS 32
31 /* memory slots that does not exposed to userspace */
32 #define KVM_PRIVATE_MEM_SLOTS 4
33 #define KVM_MMIO_SIZE 16
35 #define KVM_PIO_PAGE_OFFSET 1
36 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
38 #define CR0_RESERVED_BITS \
39 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
40 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
41 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
43 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
44 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
45 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
46 0xFFFFFF0000000000ULL)
47 #define CR4_RESERVED_BITS \
48 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
49 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
50 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR \
51 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
52 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
54 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
58 #define INVALID_PAGE (~(hpa_t)0)
59 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
61 #define UNMAPPED_GVA (~(gpa_t)0)
63 /* KVM Hugepage definitions for x86 */
64 #define KVM_NR_PAGE_SIZES 3
65 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
66 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
67 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
68 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
69 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
87 #define SELECTOR_TI_MASK (1 << 2)
88 #define SELECTOR_RPL_MASK 0x03
92 #define KVM_PERMILLE_MMU_PAGES 20
93 #define KVM_MIN_ALLOC_MMU_PAGES 64
94 #define KVM_MMU_HASH_SHIFT 10
95 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
96 #define KVM_MIN_FREE_MMU_PAGES 5
97 #define KVM_REFILL_PAGES 25
98 #define KVM_MAX_CPUID_ENTRIES 80
99 #define KVM_NR_FIXED_MTRR_REGION 88
100 #define KVM_NR_VAR_MTRR 8
102 #define ASYNC_PF_PER_VCPU 64
104 extern raw_spinlock_t kvm_lock
;
105 extern struct list_head vm_list
;
135 VCPU_EXREG_PDPTR
= NR_VCPU_REGS
,
153 #include <asm/kvm_emulate.h>
155 #define KVM_NR_MEM_OBJS 40
157 #define KVM_NR_DB_REGS 4
159 #define DR6_BD (1 << 13)
160 #define DR6_BS (1 << 14)
161 #define DR6_FIXED_1 0xffff0ff0
162 #define DR6_VOLATILE 0x0000e00f
164 #define DR7_BP_EN_MASK 0x000000ff
165 #define DR7_GE (1 << 9)
166 #define DR7_GD (1 << 13)
167 #define DR7_FIXED_1 0x00000400
168 #define DR7_VOLATILE 0xffff23ff
171 * We don't want allocation failures within the mmu code, so we preallocate
172 * enough memory for a single page fault in a cache.
174 struct kvm_mmu_memory_cache
{
176 void *objects
[KVM_NR_MEM_OBJS
];
179 #define NR_PTE_CHAIN_ENTRIES 5
181 struct kvm_pte_chain
{
182 u64
*parent_ptes
[NR_PTE_CHAIN_ENTRIES
];
183 struct hlist_node link
;
187 * kvm_mmu_page_role, below, is defined as:
189 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
190 * bits 4:7 - page table level for this shadow (1-4)
191 * bits 8:9 - page table quadrant for 2-level guests
192 * bit 16 - direct mapping of virtual to physical mapping at gfn
193 * used for real mode and two-dimensional paging
194 * bits 17:19 - common access permissions for all ptes in this shadow page
196 union kvm_mmu_page_role
{
202 unsigned pad_for_nice_hex_output
:6;
208 unsigned smep_andnot_wp
:1;
212 struct kvm_mmu_page
{
213 struct list_head link
;
214 struct hlist_node hash_link
;
217 * The following two entries are used to key the shadow page in the
221 union kvm_mmu_page_role role
;
224 /* hold the gfn of each spte inside spt */
227 * One bit set per slot which has memory
228 * in this shadow page.
230 DECLARE_BITMAP(slot_bitmap
, KVM_MEMORY_SLOTS
+ KVM_PRIVATE_MEM_SLOTS
);
232 int root_count
; /* Currently serving as active root */
233 unsigned int unsync_children
;
234 unsigned long parent_ptes
; /* Reverse mapping for parent_pte */
235 DECLARE_BITMAP(unsync_child_bitmap
, 512);
238 struct kvm_pv_mmu_op_buffer
{
242 char buf
[512] __aligned(sizeof(long));
245 struct kvm_pio_request
{
253 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
254 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
258 void (*new_cr3
)(struct kvm_vcpu
*vcpu
);
259 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long root
);
260 unsigned long (*get_cr3
)(struct kvm_vcpu
*vcpu
);
261 int (*page_fault
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 err
,
263 void (*inject_page_fault
)(struct kvm_vcpu
*vcpu
,
264 struct x86_exception
*fault
);
265 void (*free
)(struct kvm_vcpu
*vcpu
);
266 gpa_t (*gva_to_gpa
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 access
,
267 struct x86_exception
*exception
);
268 gpa_t (*translate_gpa
)(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
);
269 int (*sync_page
)(struct kvm_vcpu
*vcpu
,
270 struct kvm_mmu_page
*sp
);
271 void (*invlpg
)(struct kvm_vcpu
*vcpu
, gva_t gva
);
272 void (*update_pte
)(struct kvm_vcpu
*vcpu
, struct kvm_mmu_page
*sp
,
273 u64
*spte
, const void *pte
);
276 int shadow_root_level
;
277 union kvm_mmu_page_role base_role
;
282 u64 rsvd_bits_mask
[2][4];
286 u64 pdptrs
[4]; /* pae */
289 struct kvm_vcpu_arch
{
291 * rip and regs accesses must go through
292 * kvm_{register,rip}_{read,write} functions.
294 unsigned long regs
[NR_VCPU_REGS
];
299 unsigned long cr0_guest_owned_bits
;
303 unsigned long cr4_guest_owned_bits
;
308 struct kvm_lapic
*apic
; /* kernel irqchip context */
309 int32_t apic_arb_prio
;
312 u64 ia32_misc_enable_msr
;
313 bool tpr_access_reporting
;
316 * Paging state of the vcpu
318 * If the vcpu runs in guest mode with two level paging this still saves
319 * the paging mode of the l1 guest. This context is always used to
325 * Paging state of an L2 guest (used for nested npt)
327 * This context will save all necessary information to walk page tables
328 * of the an L2 guest. This context is only initialized for page table
329 * walking and not for faulting since we never handle l2 page faults on
332 struct kvm_mmu nested_mmu
;
335 * Pointer to the mmu context currently used for
336 * gva_to_gpa translations.
338 struct kvm_mmu
*walk_mmu
;
340 /* only needed in kvm_pv_mmu_op() path, but it's hot so
341 * put it here to avoid allocation */
342 struct kvm_pv_mmu_op_buffer mmu_op_buffer
;
344 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache
;
345 struct kvm_mmu_memory_cache mmu_page_cache
;
346 struct kvm_mmu_memory_cache mmu_page_header_cache
;
348 gfn_t last_pt_write_gfn
;
349 int last_pt_write_count
;
350 u64
*last_pte_updated
;
353 struct fpu guest_fpu
;
356 struct kvm_pio_request pio
;
359 u8 event_exit_inst_len
;
361 struct kvm_queued_exception
{
369 struct kvm_queued_interrupt
{
375 int halt_request
; /* real mode on Intel only */
378 struct kvm_cpuid_entry2 cpuid_entries
[KVM_MAX_CPUID_ENTRIES
];
379 /* emulate context */
381 struct x86_emulate_ctxt emulate_ctxt
;
382 bool emulate_regs_need_sync_to_vcpu
;
383 bool emulate_regs_need_sync_from_vcpu
;
386 struct pvclock_vcpu_time_info hv_clock
;
387 unsigned int hw_tsc_khz
;
388 unsigned int time_offset
;
389 struct page
*time_page
;
395 struct gfn_to_hva_cache stime
;
396 struct kvm_steal_time steal
;
405 u32 tsc_catchup_mult
;
406 s8 tsc_catchup_shift
;
411 struct mtrr_state_type mtrr_state
;
415 unsigned long db
[KVM_NR_DB_REGS
];
418 unsigned long eff_db
[KVM_NR_DB_REGS
];
425 /* Cache MMIO info */
430 /* used for guest single stepping over the given code position */
431 unsigned long singlestep_rip
;
433 /* fields used by HYPER-V emulation */
436 cpumask_var_t wbinvd_dirty_mask
;
440 gfn_t gfns
[roundup_pow_of_two(ASYNC_PF_PER_VCPU
)];
441 struct gfn_to_hva_cache data
;
449 unsigned int n_used_mmu_pages
;
450 unsigned int n_requested_mmu_pages
;
451 unsigned int n_max_mmu_pages
;
452 unsigned int indirect_shadow_pages
;
453 atomic_t invlpg_counter
;
454 struct hlist_head mmu_page_hash
[KVM_NUM_MMU_PAGES
];
456 * Hash table of struct kvm_mmu_page.
458 struct list_head active_mmu_pages
;
459 struct list_head assigned_dev_head
;
460 struct iommu_domain
*iommu_domain
;
462 struct kvm_pic
*vpic
;
463 struct kvm_ioapic
*vioapic
;
464 struct kvm_pit
*vpit
;
465 int vapics_in_nmi_mode
;
467 unsigned int tss_addr
;
468 struct page
*apic_access_page
;
472 struct page
*ept_identity_pagetable
;
473 bool ept_identity_pagetable_done
;
474 gpa_t ept_identity_map_addr
;
476 unsigned long irq_sources_bitmap
;
478 raw_spinlock_t tsc_write_lock
;
483 struct kvm_xen_hvm_config xen_hvm_config
;
485 /* fields used by HYPER-V emulation */
489 #ifdef CONFIG_KVM_MMU_AUDIT
495 u32 mmu_shadow_zapped
;
503 u32 remote_tlb_flush
;
507 struct kvm_vcpu_stat
{
517 u32 irq_window_exits
;
518 u32 nmi_window_exits
;
521 u32 request_irq_exits
;
523 u32 host_state_reload
;
527 u32 insn_emulation_fail
;
533 struct x86_instruction_info
;
536 int (*cpu_has_kvm_support
)(void); /* __init */
537 int (*disabled_by_bios
)(void); /* __init */
538 int (*hardware_enable
)(void *dummy
);
539 void (*hardware_disable
)(void *dummy
);
540 void (*check_processor_compatibility
)(void *rtn
);
541 int (*hardware_setup
)(void); /* __init */
542 void (*hardware_unsetup
)(void); /* __exit */
543 bool (*cpu_has_accelerated_tpr
)(void);
544 void (*cpuid_update
)(struct kvm_vcpu
*vcpu
);
546 /* Create, but do not attach this VCPU */
547 struct kvm_vcpu
*(*vcpu_create
)(struct kvm
*kvm
, unsigned id
);
548 void (*vcpu_free
)(struct kvm_vcpu
*vcpu
);
549 int (*vcpu_reset
)(struct kvm_vcpu
*vcpu
);
551 void (*prepare_guest_switch
)(struct kvm_vcpu
*vcpu
);
552 void (*vcpu_load
)(struct kvm_vcpu
*vcpu
, int cpu
);
553 void (*vcpu_put
)(struct kvm_vcpu
*vcpu
);
555 void (*set_guest_debug
)(struct kvm_vcpu
*vcpu
,
556 struct kvm_guest_debug
*dbg
);
557 int (*get_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*pdata
);
558 int (*set_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
);
559 u64 (*get_segment_base
)(struct kvm_vcpu
*vcpu
, int seg
);
560 void (*get_segment
)(struct kvm_vcpu
*vcpu
,
561 struct kvm_segment
*var
, int seg
);
562 int (*get_cpl
)(struct kvm_vcpu
*vcpu
);
563 void (*set_segment
)(struct kvm_vcpu
*vcpu
,
564 struct kvm_segment
*var
, int seg
);
565 void (*get_cs_db_l_bits
)(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
566 void (*decache_cr0_guest_bits
)(struct kvm_vcpu
*vcpu
);
567 void (*decache_cr3
)(struct kvm_vcpu
*vcpu
);
568 void (*decache_cr4_guest_bits
)(struct kvm_vcpu
*vcpu
);
569 void (*set_cr0
)(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
570 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
571 int (*set_cr4
)(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
572 void (*set_efer
)(struct kvm_vcpu
*vcpu
, u64 efer
);
573 void (*get_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
574 void (*set_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
575 void (*get_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
576 void (*set_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
577 void (*set_dr7
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
578 void (*cache_reg
)(struct kvm_vcpu
*vcpu
, enum kvm_reg reg
);
579 unsigned long (*get_rflags
)(struct kvm_vcpu
*vcpu
);
580 void (*set_rflags
)(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
581 void (*fpu_activate
)(struct kvm_vcpu
*vcpu
);
582 void (*fpu_deactivate
)(struct kvm_vcpu
*vcpu
);
584 void (*tlb_flush
)(struct kvm_vcpu
*vcpu
);
586 void (*run
)(struct kvm_vcpu
*vcpu
);
587 int (*handle_exit
)(struct kvm_vcpu
*vcpu
);
588 void (*skip_emulated_instruction
)(struct kvm_vcpu
*vcpu
);
589 void (*set_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
590 u32 (*get_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
591 void (*patch_hypercall
)(struct kvm_vcpu
*vcpu
,
592 unsigned char *hypercall_addr
);
593 void (*set_irq
)(struct kvm_vcpu
*vcpu
);
594 void (*set_nmi
)(struct kvm_vcpu
*vcpu
);
595 void (*queue_exception
)(struct kvm_vcpu
*vcpu
, unsigned nr
,
596 bool has_error_code
, u32 error_code
,
598 void (*cancel_injection
)(struct kvm_vcpu
*vcpu
);
599 int (*interrupt_allowed
)(struct kvm_vcpu
*vcpu
);
600 int (*nmi_allowed
)(struct kvm_vcpu
*vcpu
);
601 bool (*get_nmi_mask
)(struct kvm_vcpu
*vcpu
);
602 void (*set_nmi_mask
)(struct kvm_vcpu
*vcpu
, bool masked
);
603 void (*enable_nmi_window
)(struct kvm_vcpu
*vcpu
);
604 void (*enable_irq_window
)(struct kvm_vcpu
*vcpu
);
605 void (*update_cr8_intercept
)(struct kvm_vcpu
*vcpu
, int tpr
, int irr
);
606 int (*set_tss_addr
)(struct kvm
*kvm
, unsigned int addr
);
607 int (*get_tdp_level
)(void);
608 u64 (*get_mt_mask
)(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool is_mmio
);
609 int (*get_lpage_level
)(void);
610 bool (*rdtscp_supported
)(void);
611 void (*adjust_tsc_offset
)(struct kvm_vcpu
*vcpu
, s64 adjustment
);
613 void (*set_tdp_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
615 void (*set_supported_cpuid
)(u32 func
, struct kvm_cpuid_entry2
*entry
);
617 bool (*has_wbinvd_exit
)(void);
619 void (*set_tsc_khz
)(struct kvm_vcpu
*vcpu
, u32 user_tsc_khz
);
620 void (*write_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 offset
);
622 u64 (*compute_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 target_tsc
);
624 void (*get_exit_info
)(struct kvm_vcpu
*vcpu
, u64
*info1
, u64
*info2
);
626 int (*check_intercept
)(struct kvm_vcpu
*vcpu
,
627 struct x86_instruction_info
*info
,
628 enum x86_intercept_stage stage
);
630 const struct trace_print_flags
*exit_reasons_str
;
633 struct kvm_arch_async_pf
{
640 extern struct kvm_x86_ops
*kvm_x86_ops
;
642 int kvm_mmu_module_init(void);
643 void kvm_mmu_module_exit(void);
645 void kvm_mmu_destroy(struct kvm_vcpu
*vcpu
);
646 int kvm_mmu_create(struct kvm_vcpu
*vcpu
);
647 int kvm_mmu_setup(struct kvm_vcpu
*vcpu
);
648 void kvm_mmu_set_mask_ptes(u64 user_mask
, u64 accessed_mask
,
649 u64 dirty_mask
, u64 nx_mask
, u64 x_mask
);
651 int kvm_mmu_reset_context(struct kvm_vcpu
*vcpu
);
652 void kvm_mmu_slot_remove_write_access(struct kvm
*kvm
, int slot
);
653 void kvm_mmu_zap_all(struct kvm
*kvm
);
654 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm
*kvm
);
655 void kvm_mmu_change_mmu_pages(struct kvm
*kvm
, unsigned int kvm_nr_mmu_pages
);
657 int load_pdptrs(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
, unsigned long cr3
);
659 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
660 const void *val
, int bytes
);
661 int kvm_pv_mmu_op(struct kvm_vcpu
*vcpu
, unsigned long bytes
,
662 gpa_t addr
, unsigned long *ret
);
663 u8
kvm_get_guest_memory_type(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
665 extern bool tdp_enabled
;
667 /* control of guest tsc rate supported? */
668 extern bool kvm_has_tsc_control
;
669 /* minimum supported tsc_khz for guests */
670 extern u32 kvm_min_guest_tsc_khz
;
671 /* maximum supported tsc_khz for guests */
672 extern u32 kvm_max_guest_tsc_khz
;
674 enum emulation_result
{
675 EMULATE_DONE
, /* no further processing */
676 EMULATE_DO_MMIO
, /* kvm_run filled with mmio request */
677 EMULATE_FAIL
, /* can't emulate this instruction */
680 #define EMULTYPE_NO_DECODE (1 << 0)
681 #define EMULTYPE_TRAP_UD (1 << 1)
682 #define EMULTYPE_SKIP (1 << 2)
683 int x86_emulate_instruction(struct kvm_vcpu
*vcpu
, unsigned long cr2
,
684 int emulation_type
, void *insn
, int insn_len
);
686 static inline int emulate_instruction(struct kvm_vcpu
*vcpu
,
689 return x86_emulate_instruction(vcpu
, 0, emulation_type
, NULL
, 0);
692 void kvm_enable_efer_bits(u64
);
693 int kvm_get_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*data
);
694 int kvm_set_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
);
696 struct x86_emulate_ctxt
;
698 int kvm_fast_pio_out(struct kvm_vcpu
*vcpu
, int size
, unsigned short port
);
699 void kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
);
700 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
);
701 int kvm_emulate_wbinvd(struct kvm_vcpu
*vcpu
);
703 void kvm_get_segment(struct kvm_vcpu
*vcpu
, struct kvm_segment
*var
, int seg
);
704 int kvm_load_segment_descriptor(struct kvm_vcpu
*vcpu
, u16 selector
, int seg
);
706 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int reason
,
707 bool has_error_code
, u32 error_code
);
709 int kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
710 int kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
711 int kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
712 int kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
713 int kvm_set_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long val
);
714 int kvm_get_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long *val
);
715 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
);
716 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
);
717 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
718 int kvm_set_xcr(struct kvm_vcpu
*vcpu
, u32 index
, u64 xcr
);
720 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
);
721 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
);
723 unsigned long kvm_get_rflags(struct kvm_vcpu
*vcpu
);
724 void kvm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
726 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
727 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
728 void kvm_requeue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
729 void kvm_requeue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
730 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
731 int kvm_read_guest_page_mmu(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
,
732 gfn_t gfn
, void *data
, int offset
, int len
,
734 void kvm_propagate_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
735 bool kvm_require_cpl(struct kvm_vcpu
*vcpu
, int required_cpl
);
737 int kvm_pic_set_irq(void *opaque
, int irq
, int level
);
739 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
);
741 int fx_init(struct kvm_vcpu
*vcpu
);
743 void kvm_mmu_flush_tlb(struct kvm_vcpu
*vcpu
);
744 void kvm_mmu_pte_write(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
745 const u8
*new, int bytes
,
746 bool guest_initiated
);
747 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
*vcpu
, gva_t gva
);
748 void __kvm_mmu_free_some_pages(struct kvm_vcpu
*vcpu
);
749 int kvm_mmu_load(struct kvm_vcpu
*vcpu
);
750 void kvm_mmu_unload(struct kvm_vcpu
*vcpu
);
751 void kvm_mmu_sync_roots(struct kvm_vcpu
*vcpu
);
752 gpa_t
kvm_mmu_gva_to_gpa_read(struct kvm_vcpu
*vcpu
, gva_t gva
,
753 struct x86_exception
*exception
);
754 gpa_t
kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu
*vcpu
, gva_t gva
,
755 struct x86_exception
*exception
);
756 gpa_t
kvm_mmu_gva_to_gpa_write(struct kvm_vcpu
*vcpu
, gva_t gva
,
757 struct x86_exception
*exception
);
758 gpa_t
kvm_mmu_gva_to_gpa_system(struct kvm_vcpu
*vcpu
, gva_t gva
,
759 struct x86_exception
*exception
);
761 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
);
763 int kvm_mmu_page_fault(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 error_code
,
764 void *insn
, int insn_len
);
765 void kvm_mmu_invlpg(struct kvm_vcpu
*vcpu
, gva_t gva
);
767 void kvm_enable_tdp(void);
768 void kvm_disable_tdp(void);
770 int complete_pio(struct kvm_vcpu
*vcpu
);
771 bool kvm_check_iopl(struct kvm_vcpu
*vcpu
);
773 static inline struct kvm_mmu_page
*page_header(hpa_t shadow_page
)
775 struct page
*page
= pfn_to_page(shadow_page
>> PAGE_SHIFT
);
777 return (struct kvm_mmu_page
*)page_private(page
);
780 static inline u16
kvm_read_ldt(void)
783 asm("sldt %0" : "=g"(ldt
));
787 static inline void kvm_load_ldt(u16 sel
)
789 asm("lldt %0" : : "rm"(sel
));
793 static inline unsigned long read_msr(unsigned long msr
)
802 static inline u32
get_rdx_init_val(void)
804 return 0x600; /* P6 family */
807 static inline void kvm_inject_gp(struct kvm_vcpu
*vcpu
, u32 error_code
)
809 kvm_queue_exception_e(vcpu
, GP_VECTOR
, error_code
);
812 #define TSS_IOPB_BASE_OFFSET 0x66
813 #define TSS_BASE_SIZE 0x68
814 #define TSS_IOPB_SIZE (65536 / 8)
815 #define TSS_REDIRECTION_SIZE (256 / 8)
816 #define RMODE_TSS_SIZE \
817 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
820 TASK_SWITCH_CALL
= 0,
821 TASK_SWITCH_IRET
= 1,
823 TASK_SWITCH_GATE
= 3,
826 #define HF_GIF_MASK (1 << 0)
827 #define HF_HIF_MASK (1 << 1)
828 #define HF_VINTR_MASK (1 << 2)
829 #define HF_NMI_MASK (1 << 3)
830 #define HF_IRET_MASK (1 << 4)
831 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
834 * Hardware virtualization extension instructions may fault if a
835 * reboot turns off virtualization while processes are running.
836 * Trap the fault and ignore the instruction if that happens.
838 asmlinkage
void kvm_spurious_fault(void);
839 extern bool kvm_rebooting
;
841 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
842 "666: " insn "\n\t" \
844 ".pushsection .fixup, \"ax\" \n" \
846 cleanup_insn "\n\t" \
847 "cmpb $0, kvm_rebooting \n\t" \
849 __ASM_SIZE(push) " $666b \n\t" \
850 "call kvm_spurious_fault \n\t" \
852 ".pushsection __ex_table, \"a\" \n\t" \
853 _ASM_PTR " 666b, 667b \n\t" \
856 #define __kvm_handle_fault_on_reboot(insn) \
857 ____kvm_handle_fault_on_reboot(insn, "")
859 #define KVM_ARCH_WANT_MMU_NOTIFIER
860 int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
861 int kvm_age_hva(struct kvm
*kvm
, unsigned long hva
);
862 int kvm_test_age_hva(struct kvm
*kvm
, unsigned long hva
);
863 void kvm_set_spte_hva(struct kvm
*kvm
, unsigned long hva
, pte_t pte
);
864 int cpuid_maxphyaddr(struct kvm_vcpu
*vcpu
);
865 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
);
866 int kvm_arch_interrupt_allowed(struct kvm_vcpu
*vcpu
);
867 int kvm_cpu_get_interrupt(struct kvm_vcpu
*v
);
869 void kvm_define_shared_msr(unsigned index
, u32 msr
);
870 void kvm_set_shared_msr(unsigned index
, u64 val
, u64 mask
);
872 bool kvm_is_linear_rip(struct kvm_vcpu
*vcpu
, unsigned long linear_rip
);
874 void kvm_arch_async_page_not_present(struct kvm_vcpu
*vcpu
,
875 struct kvm_async_pf
*work
);
876 void kvm_arch_async_page_present(struct kvm_vcpu
*vcpu
,
877 struct kvm_async_pf
*work
);
878 void kvm_arch_async_page_ready(struct kvm_vcpu
*vcpu
,
879 struct kvm_async_pf
*work
);
880 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu
*vcpu
);
881 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
883 void kvm_complete_insn_gp(struct kvm_vcpu
*vcpu
, int err
);
885 #endif /* _ASM_X86_KVM_HOST_H */