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 \
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
,
152 #include <asm/kvm_emulate.h>
154 #define KVM_NR_MEM_OBJS 40
156 #define KVM_NR_DB_REGS 4
158 #define DR6_BD (1 << 13)
159 #define DR6_BS (1 << 14)
160 #define DR6_FIXED_1 0xffff0ff0
161 #define DR6_VOLATILE 0x0000e00f
163 #define DR7_BP_EN_MASK 0x000000ff
164 #define DR7_GE (1 << 9)
165 #define DR7_GD (1 << 13)
166 #define DR7_FIXED_1 0x00000400
167 #define DR7_VOLATILE 0xffff23ff
170 * We don't want allocation failures within the mmu code, so we preallocate
171 * enough memory for a single page fault in a cache.
173 struct kvm_mmu_memory_cache
{
175 void *objects
[KVM_NR_MEM_OBJS
];
178 #define NR_PTE_CHAIN_ENTRIES 5
180 struct kvm_pte_chain
{
181 u64
*parent_ptes
[NR_PTE_CHAIN_ENTRIES
];
182 struct hlist_node link
;
186 * kvm_mmu_page_role, below, is defined as:
188 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
189 * bits 4:7 - page table level for this shadow (1-4)
190 * bits 8:9 - page table quadrant for 2-level guests
191 * bit 16 - direct mapping of virtual to physical mapping at gfn
192 * used for real mode and two-dimensional paging
193 * bits 17:19 - common access permissions for all ptes in this shadow page
195 union kvm_mmu_page_role
{
201 unsigned pad_for_nice_hex_output
:6;
210 struct kvm_mmu_page
{
211 struct list_head link
;
212 struct hlist_node hash_link
;
215 * The following two entries are used to key the shadow page in the
219 union kvm_mmu_page_role role
;
222 /* hold the gfn of each spte inside spt */
225 * One bit set per slot which has memory
226 * in this shadow page.
228 DECLARE_BITMAP(slot_bitmap
, KVM_MEMORY_SLOTS
+ KVM_PRIVATE_MEM_SLOTS
);
229 bool multimapped
; /* More than one parent_pte? */
231 int root_count
; /* Currently serving as active root */
232 unsigned int unsync_children
;
234 u64
*parent_pte
; /* !multimapped */
235 struct hlist_head parent_ptes
; /* multimapped, kvm_pte_chain */
237 DECLARE_BITMAP(unsync_child_bitmap
, 512);
240 struct kvm_pv_mmu_op_buffer
{
244 char buf
[512] __aligned(sizeof(long));
247 struct kvm_pio_request
{
255 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
256 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
260 void (*new_cr3
)(struct kvm_vcpu
*vcpu
);
261 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long root
);
262 unsigned long (*get_cr3
)(struct kvm_vcpu
*vcpu
);
263 int (*page_fault
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 err
,
265 void (*inject_page_fault
)(struct kvm_vcpu
*vcpu
,
266 struct x86_exception
*fault
);
267 void (*free
)(struct kvm_vcpu
*vcpu
);
268 gpa_t (*gva_to_gpa
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 access
,
269 struct x86_exception
*exception
);
270 gpa_t (*translate_gpa
)(struct kvm_vcpu
*vcpu
, gpa_t gpa
, u32 access
);
271 void (*prefetch_page
)(struct kvm_vcpu
*vcpu
,
272 struct kvm_mmu_page
*page
);
273 int (*sync_page
)(struct kvm_vcpu
*vcpu
,
274 struct kvm_mmu_page
*sp
);
275 void (*invlpg
)(struct kvm_vcpu
*vcpu
, gva_t gva
);
276 void (*update_pte
)(struct kvm_vcpu
*vcpu
, struct kvm_mmu_page
*sp
,
277 u64
*spte
, const void *pte
);
280 int shadow_root_level
;
281 union kvm_mmu_page_role base_role
;
286 u64 rsvd_bits_mask
[2][4];
290 u64 pdptrs
[4]; /* pae */
293 struct kvm_vcpu_arch
{
295 * rip and regs accesses must go through
296 * kvm_{register,rip}_{read,write} functions.
298 unsigned long regs
[NR_VCPU_REGS
];
303 unsigned long cr0_guest_owned_bits
;
307 unsigned long cr4_guest_owned_bits
;
312 struct kvm_lapic
*apic
; /* kernel irqchip context */
313 int32_t apic_arb_prio
;
316 u64 ia32_misc_enable_msr
;
317 bool tpr_access_reporting
;
320 * Paging state of the vcpu
322 * If the vcpu runs in guest mode with two level paging this still saves
323 * the paging mode of the l1 guest. This context is always used to
329 * Paging state of an L2 guest (used for nested npt)
331 * This context will save all necessary information to walk page tables
332 * of the an L2 guest. This context is only initialized for page table
333 * walking and not for faulting since we never handle l2 page faults on
336 struct kvm_mmu nested_mmu
;
339 * Pointer to the mmu context currently used for
340 * gva_to_gpa translations.
342 struct kvm_mmu
*walk_mmu
;
344 /* only needed in kvm_pv_mmu_op() path, but it's hot so
345 * put it here to avoid allocation */
346 struct kvm_pv_mmu_op_buffer mmu_op_buffer
;
348 struct kvm_mmu_memory_cache mmu_pte_chain_cache
;
349 struct kvm_mmu_memory_cache mmu_rmap_desc_cache
;
350 struct kvm_mmu_memory_cache mmu_page_cache
;
351 struct kvm_mmu_memory_cache mmu_page_header_cache
;
353 gfn_t last_pt_write_gfn
;
354 int last_pt_write_count
;
355 u64
*last_pte_updated
;
358 struct fpu guest_fpu
;
361 gva_t mmio_fault_cr2
;
362 struct kvm_pio_request pio
;
365 u8 event_exit_inst_len
;
367 struct kvm_queued_exception
{
375 struct kvm_queued_interrupt
{
381 int halt_request
; /* real mode on Intel only */
384 struct kvm_cpuid_entry2 cpuid_entries
[KVM_MAX_CPUID_ENTRIES
];
385 /* emulate context */
387 struct x86_emulate_ctxt emulate_ctxt
;
388 bool emulate_regs_need_sync_to_vcpu
;
389 bool emulate_regs_need_sync_from_vcpu
;
392 struct pvclock_vcpu_time_info hv_clock
;
393 unsigned int hw_tsc_khz
;
394 unsigned int time_offset
;
395 struct page
*time_page
;
402 u32 tsc_catchup_mult
;
403 s8 tsc_catchup_shift
;
408 struct mtrr_state_type mtrr_state
;
412 unsigned long db
[KVM_NR_DB_REGS
];
415 unsigned long eff_db
[KVM_NR_DB_REGS
];
422 /* used for guest single stepping over the given code position */
423 unsigned long singlestep_rip
;
425 /* fields used by HYPER-V emulation */
428 cpumask_var_t wbinvd_dirty_mask
;
432 gfn_t gfns
[roundup_pow_of_two(ASYNC_PF_PER_VCPU
)];
433 struct gfn_to_hva_cache data
;
441 unsigned int n_used_mmu_pages
;
442 unsigned int n_requested_mmu_pages
;
443 unsigned int n_max_mmu_pages
;
444 atomic_t invlpg_counter
;
445 struct hlist_head mmu_page_hash
[KVM_NUM_MMU_PAGES
];
447 * Hash table of struct kvm_mmu_page.
449 struct list_head active_mmu_pages
;
450 struct list_head assigned_dev_head
;
451 struct iommu_domain
*iommu_domain
;
453 struct kvm_pic
*vpic
;
454 struct kvm_ioapic
*vioapic
;
455 struct kvm_pit
*vpit
;
456 int vapics_in_nmi_mode
;
458 unsigned int tss_addr
;
459 struct page
*apic_access_page
;
463 struct page
*ept_identity_pagetable
;
464 bool ept_identity_pagetable_done
;
465 gpa_t ept_identity_map_addr
;
467 unsigned long irq_sources_bitmap
;
469 raw_spinlock_t tsc_write_lock
;
474 struct kvm_xen_hvm_config xen_hvm_config
;
476 /* fields used by HYPER-V emulation */
480 #ifdef CONFIG_KVM_MMU_AUDIT
486 u32 mmu_shadow_zapped
;
494 u32 remote_tlb_flush
;
498 struct kvm_vcpu_stat
{
508 u32 irq_window_exits
;
509 u32 nmi_window_exits
;
512 u32 request_irq_exits
;
514 u32 host_state_reload
;
518 u32 insn_emulation_fail
;
524 struct x86_instruction_info
;
527 int (*cpu_has_kvm_support
)(void); /* __init */
528 int (*disabled_by_bios
)(void); /* __init */
529 int (*hardware_enable
)(void *dummy
);
530 void (*hardware_disable
)(void *dummy
);
531 void (*check_processor_compatibility
)(void *rtn
);
532 int (*hardware_setup
)(void); /* __init */
533 void (*hardware_unsetup
)(void); /* __exit */
534 bool (*cpu_has_accelerated_tpr
)(void);
535 void (*cpuid_update
)(struct kvm_vcpu
*vcpu
);
537 /* Create, but do not attach this VCPU */
538 struct kvm_vcpu
*(*vcpu_create
)(struct kvm
*kvm
, unsigned id
);
539 void (*vcpu_free
)(struct kvm_vcpu
*vcpu
);
540 int (*vcpu_reset
)(struct kvm_vcpu
*vcpu
);
542 void (*prepare_guest_switch
)(struct kvm_vcpu
*vcpu
);
543 void (*vcpu_load
)(struct kvm_vcpu
*vcpu
, int cpu
);
544 void (*vcpu_put
)(struct kvm_vcpu
*vcpu
);
546 void (*set_guest_debug
)(struct kvm_vcpu
*vcpu
,
547 struct kvm_guest_debug
*dbg
);
548 int (*get_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*pdata
);
549 int (*set_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
);
550 u64 (*get_segment_base
)(struct kvm_vcpu
*vcpu
, int seg
);
551 void (*get_segment
)(struct kvm_vcpu
*vcpu
,
552 struct kvm_segment
*var
, int seg
);
553 int (*get_cpl
)(struct kvm_vcpu
*vcpu
);
554 void (*set_segment
)(struct kvm_vcpu
*vcpu
,
555 struct kvm_segment
*var
, int seg
);
556 void (*get_cs_db_l_bits
)(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
557 void (*decache_cr0_guest_bits
)(struct kvm_vcpu
*vcpu
);
558 void (*decache_cr3
)(struct kvm_vcpu
*vcpu
);
559 void (*decache_cr4_guest_bits
)(struct kvm_vcpu
*vcpu
);
560 void (*set_cr0
)(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
561 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
562 void (*set_cr4
)(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
563 void (*set_efer
)(struct kvm_vcpu
*vcpu
, u64 efer
);
564 void (*get_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
565 void (*set_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
566 void (*get_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
567 void (*set_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
568 void (*set_dr7
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
569 void (*cache_reg
)(struct kvm_vcpu
*vcpu
, enum kvm_reg reg
);
570 unsigned long (*get_rflags
)(struct kvm_vcpu
*vcpu
);
571 void (*set_rflags
)(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
572 void (*fpu_activate
)(struct kvm_vcpu
*vcpu
);
573 void (*fpu_deactivate
)(struct kvm_vcpu
*vcpu
);
575 void (*tlb_flush
)(struct kvm_vcpu
*vcpu
);
577 void (*run
)(struct kvm_vcpu
*vcpu
);
578 int (*handle_exit
)(struct kvm_vcpu
*vcpu
);
579 void (*skip_emulated_instruction
)(struct kvm_vcpu
*vcpu
);
580 void (*set_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
581 u32 (*get_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
582 void (*patch_hypercall
)(struct kvm_vcpu
*vcpu
,
583 unsigned char *hypercall_addr
);
584 void (*set_irq
)(struct kvm_vcpu
*vcpu
);
585 void (*set_nmi
)(struct kvm_vcpu
*vcpu
);
586 void (*queue_exception
)(struct kvm_vcpu
*vcpu
, unsigned nr
,
587 bool has_error_code
, u32 error_code
,
589 void (*cancel_injection
)(struct kvm_vcpu
*vcpu
);
590 int (*interrupt_allowed
)(struct kvm_vcpu
*vcpu
);
591 int (*nmi_allowed
)(struct kvm_vcpu
*vcpu
);
592 bool (*get_nmi_mask
)(struct kvm_vcpu
*vcpu
);
593 void (*set_nmi_mask
)(struct kvm_vcpu
*vcpu
, bool masked
);
594 void (*enable_nmi_window
)(struct kvm_vcpu
*vcpu
);
595 void (*enable_irq_window
)(struct kvm_vcpu
*vcpu
);
596 void (*update_cr8_intercept
)(struct kvm_vcpu
*vcpu
, int tpr
, int irr
);
597 int (*set_tss_addr
)(struct kvm
*kvm
, unsigned int addr
);
598 int (*get_tdp_level
)(void);
599 u64 (*get_mt_mask
)(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool is_mmio
);
600 int (*get_lpage_level
)(void);
601 bool (*rdtscp_supported
)(void);
602 void (*adjust_tsc_offset
)(struct kvm_vcpu
*vcpu
, s64 adjustment
);
604 void (*set_tdp_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
606 void (*set_supported_cpuid
)(u32 func
, struct kvm_cpuid_entry2
*entry
);
608 bool (*has_wbinvd_exit
)(void);
610 void (*set_tsc_khz
)(struct kvm_vcpu
*vcpu
, u32 user_tsc_khz
);
611 void (*write_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 offset
);
613 u64 (*compute_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 target_tsc
);
615 void (*get_exit_info
)(struct kvm_vcpu
*vcpu
, u64
*info1
, u64
*info2
);
617 int (*check_intercept
)(struct kvm_vcpu
*vcpu
,
618 struct x86_instruction_info
*info
,
619 enum x86_intercept_stage stage
);
621 const struct trace_print_flags
*exit_reasons_str
;
624 struct kvm_arch_async_pf
{
631 extern struct kvm_x86_ops
*kvm_x86_ops
;
633 int kvm_mmu_module_init(void);
634 void kvm_mmu_module_exit(void);
636 void kvm_mmu_destroy(struct kvm_vcpu
*vcpu
);
637 int kvm_mmu_create(struct kvm_vcpu
*vcpu
);
638 int kvm_mmu_setup(struct kvm_vcpu
*vcpu
);
639 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte
, u64 notrap_pte
);
640 void kvm_mmu_set_mask_ptes(u64 user_mask
, u64 accessed_mask
,
641 u64 dirty_mask
, u64 nx_mask
, u64 x_mask
);
643 int kvm_mmu_reset_context(struct kvm_vcpu
*vcpu
);
644 void kvm_mmu_slot_remove_write_access(struct kvm
*kvm
, int slot
);
645 void kvm_mmu_zap_all(struct kvm
*kvm
);
646 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm
*kvm
);
647 void kvm_mmu_change_mmu_pages(struct kvm
*kvm
, unsigned int kvm_nr_mmu_pages
);
649 int load_pdptrs(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
, unsigned long cr3
);
651 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
652 const void *val
, int bytes
);
653 int kvm_pv_mmu_op(struct kvm_vcpu
*vcpu
, unsigned long bytes
,
654 gpa_t addr
, unsigned long *ret
);
655 u8
kvm_get_guest_memory_type(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
657 extern bool tdp_enabled
;
659 /* control of guest tsc rate supported? */
660 extern bool kvm_has_tsc_control
;
661 /* minimum supported tsc_khz for guests */
662 extern u32 kvm_min_guest_tsc_khz
;
663 /* maximum supported tsc_khz for guests */
664 extern u32 kvm_max_guest_tsc_khz
;
666 enum emulation_result
{
667 EMULATE_DONE
, /* no further processing */
668 EMULATE_DO_MMIO
, /* kvm_run filled with mmio request */
669 EMULATE_FAIL
, /* can't emulate this instruction */
672 #define EMULTYPE_NO_DECODE (1 << 0)
673 #define EMULTYPE_TRAP_UD (1 << 1)
674 #define EMULTYPE_SKIP (1 << 2)
675 int x86_emulate_instruction(struct kvm_vcpu
*vcpu
, unsigned long cr2
,
676 int emulation_type
, void *insn
, int insn_len
);
678 static inline int emulate_instruction(struct kvm_vcpu
*vcpu
,
681 return x86_emulate_instruction(vcpu
, 0, emulation_type
, NULL
, 0);
684 void kvm_enable_efer_bits(u64
);
685 int kvm_get_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*data
);
686 int kvm_set_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
);
688 struct x86_emulate_ctxt
;
690 int kvm_fast_pio_out(struct kvm_vcpu
*vcpu
, int size
, unsigned short port
);
691 void kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
);
692 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
);
693 int emulate_invlpg(struct kvm_vcpu
*vcpu
, gva_t address
);
694 int kvm_emulate_wbinvd(struct kvm_vcpu
*vcpu
);
696 void kvm_get_segment(struct kvm_vcpu
*vcpu
, struct kvm_segment
*var
, int seg
);
697 int kvm_load_segment_descriptor(struct kvm_vcpu
*vcpu
, u16 selector
, int seg
);
699 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int reason
,
700 bool has_error_code
, u32 error_code
);
702 int kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
703 int kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
704 int kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
705 int kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
706 int kvm_set_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long val
);
707 int kvm_get_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long *val
);
708 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
);
709 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
);
710 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
711 int kvm_set_xcr(struct kvm_vcpu
*vcpu
, u32 index
, u64 xcr
);
713 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
);
714 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
);
716 unsigned long kvm_get_rflags(struct kvm_vcpu
*vcpu
);
717 void kvm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
719 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
720 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
721 void kvm_requeue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
722 void kvm_requeue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
723 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
724 int kvm_read_guest_page_mmu(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
,
725 gfn_t gfn
, void *data
, int offset
, int len
,
727 void kvm_propagate_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
728 bool kvm_require_cpl(struct kvm_vcpu
*vcpu
, int required_cpl
);
730 int kvm_pic_set_irq(void *opaque
, int irq
, int level
);
732 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
);
734 int fx_init(struct kvm_vcpu
*vcpu
);
736 void kvm_mmu_flush_tlb(struct kvm_vcpu
*vcpu
);
737 void kvm_mmu_pte_write(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
738 const u8
*new, int bytes
,
739 bool guest_initiated
);
740 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
*vcpu
, gva_t gva
);
741 void __kvm_mmu_free_some_pages(struct kvm_vcpu
*vcpu
);
742 int kvm_mmu_load(struct kvm_vcpu
*vcpu
);
743 void kvm_mmu_unload(struct kvm_vcpu
*vcpu
);
744 void kvm_mmu_sync_roots(struct kvm_vcpu
*vcpu
);
745 gpa_t
kvm_mmu_gva_to_gpa_read(struct kvm_vcpu
*vcpu
, gva_t gva
,
746 struct x86_exception
*exception
);
747 gpa_t
kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu
*vcpu
, gva_t gva
,
748 struct x86_exception
*exception
);
749 gpa_t
kvm_mmu_gva_to_gpa_write(struct kvm_vcpu
*vcpu
, gva_t gva
,
750 struct x86_exception
*exception
);
751 gpa_t
kvm_mmu_gva_to_gpa_system(struct kvm_vcpu
*vcpu
, gva_t gva
,
752 struct x86_exception
*exception
);
754 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
);
756 int kvm_fix_hypercall(struct kvm_vcpu
*vcpu
);
758 int kvm_mmu_page_fault(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 error_code
,
759 void *insn
, int insn_len
);
760 void kvm_mmu_invlpg(struct kvm_vcpu
*vcpu
, gva_t gva
);
762 void kvm_enable_tdp(void);
763 void kvm_disable_tdp(void);
765 int complete_pio(struct kvm_vcpu
*vcpu
);
766 bool kvm_check_iopl(struct kvm_vcpu
*vcpu
);
768 static inline struct kvm_mmu_page
*page_header(hpa_t shadow_page
)
770 struct page
*page
= pfn_to_page(shadow_page
>> PAGE_SHIFT
);
772 return (struct kvm_mmu_page
*)page_private(page
);
775 static inline u16
kvm_read_ldt(void)
778 asm("sldt %0" : "=g"(ldt
));
782 static inline void kvm_load_ldt(u16 sel
)
784 asm("lldt %0" : : "rm"(sel
));
788 static inline unsigned long read_msr(unsigned long msr
)
797 static inline u32
get_rdx_init_val(void)
799 return 0x600; /* P6 family */
802 static inline void kvm_inject_gp(struct kvm_vcpu
*vcpu
, u32 error_code
)
804 kvm_queue_exception_e(vcpu
, GP_VECTOR
, error_code
);
807 #define TSS_IOPB_BASE_OFFSET 0x66
808 #define TSS_BASE_SIZE 0x68
809 #define TSS_IOPB_SIZE (65536 / 8)
810 #define TSS_REDIRECTION_SIZE (256 / 8)
811 #define RMODE_TSS_SIZE \
812 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
815 TASK_SWITCH_CALL
= 0,
816 TASK_SWITCH_IRET
= 1,
818 TASK_SWITCH_GATE
= 3,
821 #define HF_GIF_MASK (1 << 0)
822 #define HF_HIF_MASK (1 << 1)
823 #define HF_VINTR_MASK (1 << 2)
824 #define HF_NMI_MASK (1 << 3)
825 #define HF_IRET_MASK (1 << 4)
826 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
829 * Hardware virtualization extension instructions may fault if a
830 * reboot turns off virtualization while processes are running.
831 * Trap the fault and ignore the instruction if that happens.
833 asmlinkage
void kvm_spurious_fault(void);
834 extern bool kvm_rebooting
;
836 #define __kvm_handle_fault_on_reboot(insn) \
837 "666: " insn "\n\t" \
839 ".pushsection .fixup, \"ax\" \n" \
841 "cmpb $0, kvm_rebooting \n\t" \
843 __ASM_SIZE(push) " $666b \n\t" \
844 "call kvm_spurious_fault \n\t" \
846 ".pushsection __ex_table, \"a\" \n\t" \
847 _ASM_PTR " 666b, 667b \n\t" \
850 #define KVM_ARCH_WANT_MMU_NOTIFIER
851 int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
852 int kvm_age_hva(struct kvm
*kvm
, unsigned long hva
);
853 int kvm_test_age_hva(struct kvm
*kvm
, unsigned long hva
);
854 void kvm_set_spte_hva(struct kvm
*kvm
, unsigned long hva
, pte_t pte
);
855 int cpuid_maxphyaddr(struct kvm_vcpu
*vcpu
);
856 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
);
857 int kvm_arch_interrupt_allowed(struct kvm_vcpu
*vcpu
);
858 int kvm_cpu_get_interrupt(struct kvm_vcpu
*v
);
860 void kvm_define_shared_msr(unsigned index
, u32 msr
);
861 void kvm_set_shared_msr(unsigned index
, u64 val
, u64 mask
);
863 bool kvm_is_linear_rip(struct kvm_vcpu
*vcpu
, unsigned long linear_rip
);
865 void kvm_arch_async_page_not_present(struct kvm_vcpu
*vcpu
,
866 struct kvm_async_pf
*work
);
867 void kvm_arch_async_page_present(struct kvm_vcpu
*vcpu
,
868 struct kvm_async_pf
*work
);
869 void kvm_arch_async_page_ready(struct kvm_vcpu
*vcpu
,
870 struct kvm_async_pf
*work
);
871 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu
*vcpu
);
872 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
874 void kvm_complete_insn_gp(struct kvm_vcpu
*vcpu
, int err
);
876 #endif /* _ASM_X86_KVM_HOST_H */