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 void (*prefetch_page
)(struct kvm_vcpu
*vcpu
,
270 struct kvm_mmu_page
*page
);
271 int (*sync_page
)(struct kvm_vcpu
*vcpu
,
272 struct kvm_mmu_page
*sp
);
273 void (*invlpg
)(struct kvm_vcpu
*vcpu
, gva_t gva
);
274 void (*update_pte
)(struct kvm_vcpu
*vcpu
, struct kvm_mmu_page
*sp
,
275 u64
*spte
, const void *pte
);
278 int shadow_root_level
;
279 union kvm_mmu_page_role base_role
;
284 u64 rsvd_bits_mask
[2][4];
288 u64 pdptrs
[4]; /* pae */
291 struct kvm_vcpu_arch
{
293 * rip and regs accesses must go through
294 * kvm_{register,rip}_{read,write} functions.
296 unsigned long regs
[NR_VCPU_REGS
];
301 unsigned long cr0_guest_owned_bits
;
305 unsigned long cr4_guest_owned_bits
;
310 struct kvm_lapic
*apic
; /* kernel irqchip context */
311 int32_t apic_arb_prio
;
314 u64 ia32_misc_enable_msr
;
315 bool tpr_access_reporting
;
318 * Paging state of the vcpu
320 * If the vcpu runs in guest mode with two level paging this still saves
321 * the paging mode of the l1 guest. This context is always used to
327 * Paging state of an L2 guest (used for nested npt)
329 * This context will save all necessary information to walk page tables
330 * of the an L2 guest. This context is only initialized for page table
331 * walking and not for faulting since we never handle l2 page faults on
334 struct kvm_mmu nested_mmu
;
337 * Pointer to the mmu context currently used for
338 * gva_to_gpa translations.
340 struct kvm_mmu
*walk_mmu
;
342 /* only needed in kvm_pv_mmu_op() path, but it's hot so
343 * put it here to avoid allocation */
344 struct kvm_pv_mmu_op_buffer mmu_op_buffer
;
346 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache
;
347 struct kvm_mmu_memory_cache mmu_page_cache
;
348 struct kvm_mmu_memory_cache mmu_page_header_cache
;
350 gfn_t last_pt_write_gfn
;
351 int last_pt_write_count
;
352 u64
*last_pte_updated
;
355 struct fpu guest_fpu
;
358 struct kvm_pio_request pio
;
361 u8 event_exit_inst_len
;
363 struct kvm_queued_exception
{
371 struct kvm_queued_interrupt
{
377 int halt_request
; /* real mode on Intel only */
380 struct kvm_cpuid_entry2 cpuid_entries
[KVM_MAX_CPUID_ENTRIES
];
381 /* emulate context */
383 struct x86_emulate_ctxt emulate_ctxt
;
384 bool emulate_regs_need_sync_to_vcpu
;
385 bool emulate_regs_need_sync_from_vcpu
;
388 struct pvclock_vcpu_time_info hv_clock
;
389 unsigned int hw_tsc_khz
;
390 unsigned int time_offset
;
391 struct page
*time_page
;
397 struct gfn_to_hva_cache stime
;
398 struct kvm_steal_time steal
;
407 u32 tsc_catchup_mult
;
408 s8 tsc_catchup_shift
;
413 struct mtrr_state_type mtrr_state
;
417 unsigned long db
[KVM_NR_DB_REGS
];
420 unsigned long eff_db
[KVM_NR_DB_REGS
];
427 /* Cache MMIO info */
432 /* used for guest single stepping over the given code position */
433 unsigned long singlestep_rip
;
435 /* fields used by HYPER-V emulation */
438 cpumask_var_t wbinvd_dirty_mask
;
442 gfn_t gfns
[roundup_pow_of_two(ASYNC_PF_PER_VCPU
)];
443 struct gfn_to_hva_cache data
;
451 unsigned int n_used_mmu_pages
;
452 unsigned int n_requested_mmu_pages
;
453 unsigned int n_max_mmu_pages
;
454 unsigned int indirect_shadow_pages
;
455 atomic_t invlpg_counter
;
456 struct hlist_head mmu_page_hash
[KVM_NUM_MMU_PAGES
];
458 * Hash table of struct kvm_mmu_page.
460 struct list_head active_mmu_pages
;
461 struct list_head assigned_dev_head
;
462 struct iommu_domain
*iommu_domain
;
464 struct kvm_pic
*vpic
;
465 struct kvm_ioapic
*vioapic
;
466 struct kvm_pit
*vpit
;
467 int vapics_in_nmi_mode
;
469 unsigned int tss_addr
;
470 struct page
*apic_access_page
;
474 struct page
*ept_identity_pagetable
;
475 bool ept_identity_pagetable_done
;
476 gpa_t ept_identity_map_addr
;
478 unsigned long irq_sources_bitmap
;
480 raw_spinlock_t tsc_write_lock
;
485 struct kvm_xen_hvm_config xen_hvm_config
;
487 /* fields used by HYPER-V emulation */
491 #ifdef CONFIG_KVM_MMU_AUDIT
497 u32 mmu_shadow_zapped
;
505 u32 remote_tlb_flush
;
509 struct kvm_vcpu_stat
{
519 u32 irq_window_exits
;
520 u32 nmi_window_exits
;
523 u32 request_irq_exits
;
525 u32 host_state_reload
;
529 u32 insn_emulation_fail
;
535 struct x86_instruction_info
;
538 int (*cpu_has_kvm_support
)(void); /* __init */
539 int (*disabled_by_bios
)(void); /* __init */
540 int (*hardware_enable
)(void *dummy
);
541 void (*hardware_disable
)(void *dummy
);
542 void (*check_processor_compatibility
)(void *rtn
);
543 int (*hardware_setup
)(void); /* __init */
544 void (*hardware_unsetup
)(void); /* __exit */
545 bool (*cpu_has_accelerated_tpr
)(void);
546 void (*cpuid_update
)(struct kvm_vcpu
*vcpu
);
548 /* Create, but do not attach this VCPU */
549 struct kvm_vcpu
*(*vcpu_create
)(struct kvm
*kvm
, unsigned id
);
550 void (*vcpu_free
)(struct kvm_vcpu
*vcpu
);
551 int (*vcpu_reset
)(struct kvm_vcpu
*vcpu
);
553 void (*prepare_guest_switch
)(struct kvm_vcpu
*vcpu
);
554 void (*vcpu_load
)(struct kvm_vcpu
*vcpu
, int cpu
);
555 void (*vcpu_put
)(struct kvm_vcpu
*vcpu
);
557 void (*set_guest_debug
)(struct kvm_vcpu
*vcpu
,
558 struct kvm_guest_debug
*dbg
);
559 int (*get_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*pdata
);
560 int (*set_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
);
561 u64 (*get_segment_base
)(struct kvm_vcpu
*vcpu
, int seg
);
562 void (*get_segment
)(struct kvm_vcpu
*vcpu
,
563 struct kvm_segment
*var
, int seg
);
564 int (*get_cpl
)(struct kvm_vcpu
*vcpu
);
565 void (*set_segment
)(struct kvm_vcpu
*vcpu
,
566 struct kvm_segment
*var
, int seg
);
567 void (*get_cs_db_l_bits
)(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
568 void (*decache_cr0_guest_bits
)(struct kvm_vcpu
*vcpu
);
569 void (*decache_cr3
)(struct kvm_vcpu
*vcpu
);
570 void (*decache_cr4_guest_bits
)(struct kvm_vcpu
*vcpu
);
571 void (*set_cr0
)(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
572 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
573 int (*set_cr4
)(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
574 void (*set_efer
)(struct kvm_vcpu
*vcpu
, u64 efer
);
575 void (*get_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
576 void (*set_idt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
577 void (*get_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
578 void (*set_gdt
)(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
);
579 void (*set_dr7
)(struct kvm_vcpu
*vcpu
, unsigned long value
);
580 void (*cache_reg
)(struct kvm_vcpu
*vcpu
, enum kvm_reg reg
);
581 unsigned long (*get_rflags
)(struct kvm_vcpu
*vcpu
);
582 void (*set_rflags
)(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
583 void (*fpu_activate
)(struct kvm_vcpu
*vcpu
);
584 void (*fpu_deactivate
)(struct kvm_vcpu
*vcpu
);
586 void (*tlb_flush
)(struct kvm_vcpu
*vcpu
);
588 void (*run
)(struct kvm_vcpu
*vcpu
);
589 int (*handle_exit
)(struct kvm_vcpu
*vcpu
);
590 void (*skip_emulated_instruction
)(struct kvm_vcpu
*vcpu
);
591 void (*set_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
592 u32 (*get_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
593 void (*patch_hypercall
)(struct kvm_vcpu
*vcpu
,
594 unsigned char *hypercall_addr
);
595 void (*set_irq
)(struct kvm_vcpu
*vcpu
);
596 void (*set_nmi
)(struct kvm_vcpu
*vcpu
);
597 void (*queue_exception
)(struct kvm_vcpu
*vcpu
, unsigned nr
,
598 bool has_error_code
, u32 error_code
,
600 void (*cancel_injection
)(struct kvm_vcpu
*vcpu
);
601 int (*interrupt_allowed
)(struct kvm_vcpu
*vcpu
);
602 int (*nmi_allowed
)(struct kvm_vcpu
*vcpu
);
603 bool (*get_nmi_mask
)(struct kvm_vcpu
*vcpu
);
604 void (*set_nmi_mask
)(struct kvm_vcpu
*vcpu
, bool masked
);
605 void (*enable_nmi_window
)(struct kvm_vcpu
*vcpu
);
606 void (*enable_irq_window
)(struct kvm_vcpu
*vcpu
);
607 void (*update_cr8_intercept
)(struct kvm_vcpu
*vcpu
, int tpr
, int irr
);
608 int (*set_tss_addr
)(struct kvm
*kvm
, unsigned int addr
);
609 int (*get_tdp_level
)(void);
610 u64 (*get_mt_mask
)(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool is_mmio
);
611 int (*get_lpage_level
)(void);
612 bool (*rdtscp_supported
)(void);
613 void (*adjust_tsc_offset
)(struct kvm_vcpu
*vcpu
, s64 adjustment
);
615 void (*set_tdp_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
617 void (*set_supported_cpuid
)(u32 func
, struct kvm_cpuid_entry2
*entry
);
619 bool (*has_wbinvd_exit
)(void);
621 void (*set_tsc_khz
)(struct kvm_vcpu
*vcpu
, u32 user_tsc_khz
);
622 void (*write_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 offset
);
624 u64 (*compute_tsc_offset
)(struct kvm_vcpu
*vcpu
, u64 target_tsc
);
626 void (*get_exit_info
)(struct kvm_vcpu
*vcpu
, u64
*info1
, u64
*info2
);
628 int (*check_intercept
)(struct kvm_vcpu
*vcpu
,
629 struct x86_instruction_info
*info
,
630 enum x86_intercept_stage stage
);
632 const struct trace_print_flags
*exit_reasons_str
;
635 struct kvm_arch_async_pf
{
642 extern struct kvm_x86_ops
*kvm_x86_ops
;
644 int kvm_mmu_module_init(void);
645 void kvm_mmu_module_exit(void);
647 void kvm_mmu_destroy(struct kvm_vcpu
*vcpu
);
648 int kvm_mmu_create(struct kvm_vcpu
*vcpu
);
649 int kvm_mmu_setup(struct kvm_vcpu
*vcpu
);
650 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte
, u64 notrap_pte
);
651 void kvm_mmu_set_mask_ptes(u64 user_mask
, u64 accessed_mask
,
652 u64 dirty_mask
, u64 nx_mask
, u64 x_mask
);
654 int kvm_mmu_reset_context(struct kvm_vcpu
*vcpu
);
655 void kvm_mmu_slot_remove_write_access(struct kvm
*kvm
, int slot
);
656 void kvm_mmu_zap_all(struct kvm
*kvm
);
657 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm
*kvm
);
658 void kvm_mmu_change_mmu_pages(struct kvm
*kvm
, unsigned int kvm_nr_mmu_pages
);
660 int load_pdptrs(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
, unsigned long cr3
);
662 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
663 const void *val
, int bytes
);
664 int kvm_pv_mmu_op(struct kvm_vcpu
*vcpu
, unsigned long bytes
,
665 gpa_t addr
, unsigned long *ret
);
666 u8
kvm_get_guest_memory_type(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
668 extern bool tdp_enabled
;
670 /* control of guest tsc rate supported? */
671 extern bool kvm_has_tsc_control
;
672 /* minimum supported tsc_khz for guests */
673 extern u32 kvm_min_guest_tsc_khz
;
674 /* maximum supported tsc_khz for guests */
675 extern u32 kvm_max_guest_tsc_khz
;
677 enum emulation_result
{
678 EMULATE_DONE
, /* no further processing */
679 EMULATE_DO_MMIO
, /* kvm_run filled with mmio request */
680 EMULATE_FAIL
, /* can't emulate this instruction */
683 #define EMULTYPE_NO_DECODE (1 << 0)
684 #define EMULTYPE_TRAP_UD (1 << 1)
685 #define EMULTYPE_SKIP (1 << 2)
686 int x86_emulate_instruction(struct kvm_vcpu
*vcpu
, unsigned long cr2
,
687 int emulation_type
, void *insn
, int insn_len
);
689 static inline int emulate_instruction(struct kvm_vcpu
*vcpu
,
692 return x86_emulate_instruction(vcpu
, 0, emulation_type
, NULL
, 0);
695 void kvm_enable_efer_bits(u64
);
696 int kvm_get_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*data
);
697 int kvm_set_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
);
699 struct x86_emulate_ctxt
;
701 int kvm_fast_pio_out(struct kvm_vcpu
*vcpu
, int size
, unsigned short port
);
702 void kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
);
703 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
);
704 int kvm_emulate_wbinvd(struct kvm_vcpu
*vcpu
);
706 void kvm_get_segment(struct kvm_vcpu
*vcpu
, struct kvm_segment
*var
, int seg
);
707 int kvm_load_segment_descriptor(struct kvm_vcpu
*vcpu
, u16 selector
, int seg
);
709 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int reason
,
710 bool has_error_code
, u32 error_code
);
712 int kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
713 int kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
714 int kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
715 int kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
716 int kvm_set_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long val
);
717 int kvm_get_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long *val
);
718 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
);
719 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
);
720 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
721 int kvm_set_xcr(struct kvm_vcpu
*vcpu
, u32 index
, u64 xcr
);
723 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
);
724 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
);
726 unsigned long kvm_get_rflags(struct kvm_vcpu
*vcpu
);
727 void kvm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
729 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
730 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
731 void kvm_requeue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
732 void kvm_requeue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
733 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
734 int kvm_read_guest_page_mmu(struct kvm_vcpu
*vcpu
, struct kvm_mmu
*mmu
,
735 gfn_t gfn
, void *data
, int offset
, int len
,
737 void kvm_propagate_fault(struct kvm_vcpu
*vcpu
, struct x86_exception
*fault
);
738 bool kvm_require_cpl(struct kvm_vcpu
*vcpu
, int required_cpl
);
740 int kvm_pic_set_irq(void *opaque
, int irq
, int level
);
742 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
);
744 int fx_init(struct kvm_vcpu
*vcpu
);
746 void kvm_mmu_flush_tlb(struct kvm_vcpu
*vcpu
);
747 void kvm_mmu_pte_write(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
748 const u8
*new, int bytes
,
749 bool guest_initiated
);
750 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
*vcpu
, gva_t gva
);
751 void __kvm_mmu_free_some_pages(struct kvm_vcpu
*vcpu
);
752 int kvm_mmu_load(struct kvm_vcpu
*vcpu
);
753 void kvm_mmu_unload(struct kvm_vcpu
*vcpu
);
754 void kvm_mmu_sync_roots(struct kvm_vcpu
*vcpu
);
755 gpa_t
kvm_mmu_gva_to_gpa_read(struct kvm_vcpu
*vcpu
, gva_t gva
,
756 struct x86_exception
*exception
);
757 gpa_t
kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu
*vcpu
, gva_t gva
,
758 struct x86_exception
*exception
);
759 gpa_t
kvm_mmu_gva_to_gpa_write(struct kvm_vcpu
*vcpu
, gva_t gva
,
760 struct x86_exception
*exception
);
761 gpa_t
kvm_mmu_gva_to_gpa_system(struct kvm_vcpu
*vcpu
, gva_t gva
,
762 struct x86_exception
*exception
);
764 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
);
766 int kvm_mmu_page_fault(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 error_code
,
767 void *insn
, int insn_len
);
768 void kvm_mmu_invlpg(struct kvm_vcpu
*vcpu
, gva_t gva
);
770 void kvm_enable_tdp(void);
771 void kvm_disable_tdp(void);
773 int complete_pio(struct kvm_vcpu
*vcpu
);
774 bool kvm_check_iopl(struct kvm_vcpu
*vcpu
);
776 static inline struct kvm_mmu_page
*page_header(hpa_t shadow_page
)
778 struct page
*page
= pfn_to_page(shadow_page
>> PAGE_SHIFT
);
780 return (struct kvm_mmu_page
*)page_private(page
);
783 static inline u16
kvm_read_ldt(void)
786 asm("sldt %0" : "=g"(ldt
));
790 static inline void kvm_load_ldt(u16 sel
)
792 asm("lldt %0" : : "rm"(sel
));
796 static inline unsigned long read_msr(unsigned long msr
)
805 static inline u32
get_rdx_init_val(void)
807 return 0x600; /* P6 family */
810 static inline void kvm_inject_gp(struct kvm_vcpu
*vcpu
, u32 error_code
)
812 kvm_queue_exception_e(vcpu
, GP_VECTOR
, error_code
);
815 #define TSS_IOPB_BASE_OFFSET 0x66
816 #define TSS_BASE_SIZE 0x68
817 #define TSS_IOPB_SIZE (65536 / 8)
818 #define TSS_REDIRECTION_SIZE (256 / 8)
819 #define RMODE_TSS_SIZE \
820 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
823 TASK_SWITCH_CALL
= 0,
824 TASK_SWITCH_IRET
= 1,
826 TASK_SWITCH_GATE
= 3,
829 #define HF_GIF_MASK (1 << 0)
830 #define HF_HIF_MASK (1 << 1)
831 #define HF_VINTR_MASK (1 << 2)
832 #define HF_NMI_MASK (1 << 3)
833 #define HF_IRET_MASK (1 << 4)
834 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
837 * Hardware virtualization extension instructions may fault if a
838 * reboot turns off virtualization while processes are running.
839 * Trap the fault and ignore the instruction if that happens.
841 asmlinkage
void kvm_spurious_fault(void);
842 extern bool kvm_rebooting
;
844 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
845 "666: " insn "\n\t" \
847 ".pushsection .fixup, \"ax\" \n" \
849 cleanup_insn "\n\t" \
850 "cmpb $0, kvm_rebooting \n\t" \
852 __ASM_SIZE(push) " $666b \n\t" \
853 "call kvm_spurious_fault \n\t" \
855 ".pushsection __ex_table, \"a\" \n\t" \
856 _ASM_PTR " 666b, 667b \n\t" \
859 #define __kvm_handle_fault_on_reboot(insn) \
860 ____kvm_handle_fault_on_reboot(insn, "")
862 #define KVM_ARCH_WANT_MMU_NOTIFIER
863 int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
864 int kvm_age_hva(struct kvm
*kvm
, unsigned long hva
);
865 int kvm_test_age_hva(struct kvm
*kvm
, unsigned long hva
);
866 void kvm_set_spte_hva(struct kvm
*kvm
, unsigned long hva
, pte_t pte
);
867 int cpuid_maxphyaddr(struct kvm_vcpu
*vcpu
);
868 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
);
869 int kvm_arch_interrupt_allowed(struct kvm_vcpu
*vcpu
);
870 int kvm_cpu_get_interrupt(struct kvm_vcpu
*v
);
872 void kvm_define_shared_msr(unsigned index
, u32 msr
);
873 void kvm_set_shared_msr(unsigned index
, u64 val
, u64 mask
);
875 bool kvm_is_linear_rip(struct kvm_vcpu
*vcpu
, unsigned long linear_rip
);
877 void kvm_arch_async_page_not_present(struct kvm_vcpu
*vcpu
,
878 struct kvm_async_pf
*work
);
879 void kvm_arch_async_page_present(struct kvm_vcpu
*vcpu
,
880 struct kvm_async_pf
*work
);
881 void kvm_arch_async_page_ready(struct kvm_vcpu
*vcpu
,
882 struct kvm_async_pf
*work
);
883 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu
*vcpu
);
884 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
886 void kvm_complete_insn_gp(struct kvm_vcpu
*vcpu
, int err
);
888 #endif /* _ASM_X86_KVM_HOST_H */