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>
19 #include <linux/kvm.h>
20 #include <linux/kvm_para.h>
21 #include <linux/kvm_types.h>
23 #include <asm/pvclock-abi.h>
26 #include <asm/msr-index.h>
28 #define KVM_MAX_VCPUS 16
29 #define KVM_MEMORY_SLOTS 32
30 /* memory slots that does not exposed to userspace */
31 #define KVM_PRIVATE_MEM_SLOTS 4
33 #define KVM_PIO_PAGE_OFFSET 1
34 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
36 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
37 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
38 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
39 0xFFFFFF0000000000ULL)
41 #define KVM_GUEST_CR0_MASK_UNRESTRICTED_GUEST \
42 (X86_CR0_WP | X86_CR0_NE | X86_CR0_NW | X86_CR0_CD)
43 #define KVM_GUEST_CR0_MASK \
44 (KVM_GUEST_CR0_MASK_UNRESTRICTED_GUEST | X86_CR0_PG | X86_CR0_PE)
45 #define KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST \
46 (X86_CR0_WP | X86_CR0_NE | X86_CR0_TS | X86_CR0_MP)
47 #define KVM_VM_CR0_ALWAYS_ON \
48 (KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST | X86_CR0_PG | X86_CR0_PE)
49 #define KVM_GUEST_CR4_MASK \
50 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
51 #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
52 #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
54 #define INVALID_PAGE (~(hpa_t)0)
55 #define UNMAPPED_GVA (~(gpa_t)0)
57 /* KVM Hugepage definitions for x86 */
58 #define KVM_NR_PAGE_SIZES 3
59 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + (((x) - 1) * 9))
60 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
61 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
62 #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_ALIAS_SLOTS 4
87 #define KVM_PERMILLE_MMU_PAGES 20
88 #define KVM_MIN_ALLOC_MMU_PAGES 64
89 #define KVM_MMU_HASH_SHIFT 10
90 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
91 #define KVM_MIN_FREE_MMU_PAGES 5
92 #define KVM_REFILL_PAGES 25
93 #define KVM_MAX_CPUID_ENTRIES 40
94 #define KVM_NR_FIXED_MTRR_REGION 88
95 #define KVM_NR_VAR_MTRR 8
97 extern spinlock_t kvm_lock
;
98 extern struct list_head vm_list
;
127 VCPU_EXREG_PDPTR
= NR_VCPU_REGS
,
141 #include <asm/kvm_emulate.h>
143 #define KVM_NR_MEM_OBJS 40
145 #define KVM_NR_DB_REGS 4
147 #define DR6_BD (1 << 13)
148 #define DR6_BS (1 << 14)
149 #define DR6_FIXED_1 0xffff0ff0
150 #define DR6_VOLATILE 0x0000e00f
152 #define DR7_BP_EN_MASK 0x000000ff
153 #define DR7_GE (1 << 9)
154 #define DR7_GD (1 << 13)
155 #define DR7_FIXED_1 0x00000400
156 #define DR7_VOLATILE 0xffff23ff
159 * We don't want allocation failures within the mmu code, so we preallocate
160 * enough memory for a single page fault in a cache.
162 struct kvm_mmu_memory_cache
{
164 void *objects
[KVM_NR_MEM_OBJS
];
167 #define NR_PTE_CHAIN_ENTRIES 5
169 struct kvm_pte_chain
{
170 u64
*parent_ptes
[NR_PTE_CHAIN_ENTRIES
];
171 struct hlist_node link
;
175 * kvm_mmu_page_role, below, is defined as:
177 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
178 * bits 4:7 - page table level for this shadow (1-4)
179 * bits 8:9 - page table quadrant for 2-level guests
180 * bit 16 - direct mapping of virtual to physical mapping at gfn
181 * used for real mode and two-dimensional paging
182 * bits 17:19 - common access permissions for all ptes in this shadow page
184 union kvm_mmu_page_role
{
190 unsigned pad_for_nice_hex_output
:6;
199 struct kvm_mmu_page
{
200 struct list_head link
;
201 struct hlist_node hash_link
;
203 struct list_head oos_link
;
206 * The following two entries are used to key the shadow page in the
210 union kvm_mmu_page_role role
;
213 /* hold the gfn of each spte inside spt */
216 * One bit set per slot which has memory
217 * in this shadow page.
219 DECLARE_BITMAP(slot_bitmap
, KVM_MEMORY_SLOTS
+ KVM_PRIVATE_MEM_SLOTS
);
220 int multimapped
; /* More than one parent_pte? */
221 int root_count
; /* Currently serving as active root */
223 unsigned int unsync_children
;
225 u64
*parent_pte
; /* !multimapped */
226 struct hlist_head parent_ptes
; /* multimapped, kvm_pte_chain */
228 DECLARE_BITMAP(unsync_child_bitmap
, 512);
231 struct kvm_pv_mmu_op_buffer
{
235 char buf
[512] __aligned(sizeof(long));
238 struct kvm_pio_request
{
251 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
252 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
256 void (*new_cr3
)(struct kvm_vcpu
*vcpu
);
257 int (*page_fault
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 err
);
258 void (*free
)(struct kvm_vcpu
*vcpu
);
259 gpa_t (*gva_to_gpa
)(struct kvm_vcpu
*vcpu
, gva_t gva
);
260 void (*prefetch_page
)(struct kvm_vcpu
*vcpu
,
261 struct kvm_mmu_page
*page
);
262 int (*sync_page
)(struct kvm_vcpu
*vcpu
,
263 struct kvm_mmu_page
*sp
);
264 void (*invlpg
)(struct kvm_vcpu
*vcpu
, gva_t gva
);
267 int shadow_root_level
;
268 union kvm_mmu_page_role base_role
;
271 u64 rsvd_bits_mask
[2][4];
274 struct kvm_vcpu_arch
{
277 * rip and regs accesses must go through
278 * kvm_{register,rip}_{read,write} functions.
280 unsigned long regs
[NR_VCPU_REGS
];
290 u64 pdptrs
[4]; /* pae */
293 struct kvm_lapic
*apic
; /* kernel irqchip context */
294 int32_t apic_arb_prio
;
297 u64 ia32_misc_enable_msr
;
298 bool tpr_access_reporting
;
301 /* only needed in kvm_pv_mmu_op() path, but it's hot so
302 * put it here to avoid allocation */
303 struct kvm_pv_mmu_op_buffer mmu_op_buffer
;
305 struct kvm_mmu_memory_cache mmu_pte_chain_cache
;
306 struct kvm_mmu_memory_cache mmu_rmap_desc_cache
;
307 struct kvm_mmu_memory_cache mmu_page_cache
;
308 struct kvm_mmu_memory_cache mmu_page_header_cache
;
310 gfn_t last_pt_write_gfn
;
311 int last_pt_write_count
;
312 u64
*last_pte_updated
;
316 gfn_t gfn
; /* presumed gfn during guest pte update */
317 pfn_t pfn
; /* pfn corresponding to that gfn */
318 unsigned long mmu_seq
;
321 struct i387_fxsave_struct host_fx_image
;
322 struct i387_fxsave_struct guest_fx_image
;
324 gva_t mmio_fault_cr2
;
325 struct kvm_pio_request pio
;
328 u8 event_exit_inst_len
;
330 struct kvm_queued_exception
{
337 struct kvm_queued_interrupt
{
343 int halt_request
; /* real mode on Intel only */
346 struct kvm_cpuid_entry2 cpuid_entries
[KVM_MAX_CPUID_ENTRIES
];
347 /* emulate context */
349 struct x86_emulate_ctxt emulate_ctxt
;
352 struct pvclock_vcpu_time_info hv_clock
;
353 unsigned int hv_clock_tsc_khz
;
354 unsigned int time_offset
;
355 struct page
*time_page
;
360 struct mtrr_state_type mtrr_state
;
364 unsigned long db
[KVM_NR_DB_REGS
];
367 unsigned long eff_db
[KVM_NR_DB_REGS
];
374 /* used for guest single stepping over the given code position */
376 unsigned long singlestep_rip
;
379 struct kvm_mem_alias
{
381 unsigned long npages
;
387 struct kvm_mem_alias aliases
[KVM_ALIAS_SLOTS
];
389 unsigned int n_free_mmu_pages
;
390 unsigned int n_requested_mmu_pages
;
391 unsigned int n_alloc_mmu_pages
;
392 struct hlist_head mmu_page_hash
[KVM_NUM_MMU_PAGES
];
394 * Hash table of struct kvm_mmu_page.
396 struct list_head active_mmu_pages
;
397 struct list_head assigned_dev_head
;
398 struct iommu_domain
*iommu_domain
;
400 struct kvm_pic
*vpic
;
401 struct kvm_ioapic
*vioapic
;
402 struct kvm_pit
*vpit
;
403 int vapics_in_nmi_mode
;
405 unsigned int tss_addr
;
406 struct page
*apic_access_page
;
410 struct page
*ept_identity_pagetable
;
411 bool ept_identity_pagetable_done
;
412 gpa_t ept_identity_map_addr
;
414 unsigned long irq_sources_bitmap
;
418 struct kvm_xen_hvm_config xen_hvm_config
;
422 u32 mmu_shadow_zapped
;
430 u32 remote_tlb_flush
;
434 struct kvm_vcpu_stat
{
444 u32 irq_window_exits
;
445 u32 nmi_window_exits
;
448 u32 request_irq_exits
;
450 u32 host_state_reload
;
454 u32 insn_emulation_fail
;
460 struct descriptor_table
{
463 } __attribute__((packed
));
466 int (*cpu_has_kvm_support
)(void); /* __init */
467 int (*disabled_by_bios
)(void); /* __init */
468 int (*hardware_enable
)(void *dummy
);
469 void (*hardware_disable
)(void *dummy
);
470 void (*check_processor_compatibility
)(void *rtn
);
471 int (*hardware_setup
)(void); /* __init */
472 void (*hardware_unsetup
)(void); /* __exit */
473 bool (*cpu_has_accelerated_tpr
)(void);
475 /* Create, but do not attach this VCPU */
476 struct kvm_vcpu
*(*vcpu_create
)(struct kvm
*kvm
, unsigned id
);
477 void (*vcpu_free
)(struct kvm_vcpu
*vcpu
);
478 int (*vcpu_reset
)(struct kvm_vcpu
*vcpu
);
480 void (*prepare_guest_switch
)(struct kvm_vcpu
*vcpu
);
481 void (*vcpu_load
)(struct kvm_vcpu
*vcpu
, int cpu
);
482 void (*vcpu_put
)(struct kvm_vcpu
*vcpu
);
484 void (*set_guest_debug
)(struct kvm_vcpu
*vcpu
,
485 struct kvm_guest_debug
*dbg
);
486 int (*get_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*pdata
);
487 int (*set_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
);
488 u64 (*get_segment_base
)(struct kvm_vcpu
*vcpu
, int seg
);
489 void (*get_segment
)(struct kvm_vcpu
*vcpu
,
490 struct kvm_segment
*var
, int seg
);
491 int (*get_cpl
)(struct kvm_vcpu
*vcpu
);
492 void (*set_segment
)(struct kvm_vcpu
*vcpu
,
493 struct kvm_segment
*var
, int seg
);
494 void (*get_cs_db_l_bits
)(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
495 void (*decache_cr4_guest_bits
)(struct kvm_vcpu
*vcpu
);
496 void (*set_cr0
)(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
497 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
498 void (*set_cr4
)(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
499 void (*set_efer
)(struct kvm_vcpu
*vcpu
, u64 efer
);
500 void (*get_idt
)(struct kvm_vcpu
*vcpu
, struct descriptor_table
*dt
);
501 void (*set_idt
)(struct kvm_vcpu
*vcpu
, struct descriptor_table
*dt
);
502 void (*get_gdt
)(struct kvm_vcpu
*vcpu
, struct descriptor_table
*dt
);
503 void (*set_gdt
)(struct kvm_vcpu
*vcpu
, struct descriptor_table
*dt
);
504 unsigned long (*get_dr
)(struct kvm_vcpu
*vcpu
, int dr
);
505 void (*set_dr
)(struct kvm_vcpu
*vcpu
, int dr
, unsigned long value
,
507 void (*cache_reg
)(struct kvm_vcpu
*vcpu
, enum kvm_reg reg
);
508 unsigned long (*get_rflags
)(struct kvm_vcpu
*vcpu
);
509 void (*set_rflags
)(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
511 void (*tlb_flush
)(struct kvm_vcpu
*vcpu
);
513 void (*run
)(struct kvm_vcpu
*vcpu
);
514 int (*handle_exit
)(struct kvm_vcpu
*vcpu
);
515 void (*skip_emulated_instruction
)(struct kvm_vcpu
*vcpu
);
516 void (*set_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
517 u32 (*get_interrupt_shadow
)(struct kvm_vcpu
*vcpu
, int mask
);
518 void (*patch_hypercall
)(struct kvm_vcpu
*vcpu
,
519 unsigned char *hypercall_addr
);
520 void (*set_irq
)(struct kvm_vcpu
*vcpu
);
521 void (*set_nmi
)(struct kvm_vcpu
*vcpu
);
522 void (*queue_exception
)(struct kvm_vcpu
*vcpu
, unsigned nr
,
523 bool has_error_code
, u32 error_code
);
524 int (*interrupt_allowed
)(struct kvm_vcpu
*vcpu
);
525 int (*nmi_allowed
)(struct kvm_vcpu
*vcpu
);
526 bool (*get_nmi_mask
)(struct kvm_vcpu
*vcpu
);
527 void (*set_nmi_mask
)(struct kvm_vcpu
*vcpu
, bool masked
);
528 void (*enable_nmi_window
)(struct kvm_vcpu
*vcpu
);
529 void (*enable_irq_window
)(struct kvm_vcpu
*vcpu
);
530 void (*update_cr8_intercept
)(struct kvm_vcpu
*vcpu
, int tpr
, int irr
);
531 int (*set_tss_addr
)(struct kvm
*kvm
, unsigned int addr
);
532 int (*get_tdp_level
)(void);
533 u64 (*get_mt_mask
)(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool is_mmio
);
534 bool (*gb_page_enable
)(void);
536 const struct trace_print_flags
*exit_reasons_str
;
539 extern struct kvm_x86_ops
*kvm_x86_ops
;
541 int kvm_mmu_module_init(void);
542 void kvm_mmu_module_exit(void);
544 void kvm_mmu_destroy(struct kvm_vcpu
*vcpu
);
545 int kvm_mmu_create(struct kvm_vcpu
*vcpu
);
546 int kvm_mmu_setup(struct kvm_vcpu
*vcpu
);
547 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte
, u64 notrap_pte
);
548 void kvm_mmu_set_base_ptes(u64 base_pte
);
549 void kvm_mmu_set_mask_ptes(u64 user_mask
, u64 accessed_mask
,
550 u64 dirty_mask
, u64 nx_mask
, u64 x_mask
);
552 int kvm_mmu_reset_context(struct kvm_vcpu
*vcpu
);
553 void kvm_mmu_slot_remove_write_access(struct kvm
*kvm
, int slot
);
554 void kvm_mmu_zap_all(struct kvm
*kvm
);
555 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm
*kvm
);
556 void kvm_mmu_change_mmu_pages(struct kvm
*kvm
, unsigned int kvm_nr_mmu_pages
);
558 int load_pdptrs(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
560 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
561 const void *val
, int bytes
);
562 int kvm_pv_mmu_op(struct kvm_vcpu
*vcpu
, unsigned long bytes
,
563 gpa_t addr
, unsigned long *ret
);
564 u8
kvm_get_guest_memory_type(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
566 extern bool tdp_enabled
;
568 enum emulation_result
{
569 EMULATE_DONE
, /* no further processing */
570 EMULATE_DO_MMIO
, /* kvm_run filled with mmio request */
571 EMULATE_FAIL
, /* can't emulate this instruction */
574 #define EMULTYPE_NO_DECODE (1 << 0)
575 #define EMULTYPE_TRAP_UD (1 << 1)
576 #define EMULTYPE_SKIP (1 << 2)
577 int emulate_instruction(struct kvm_vcpu
*vcpu
,
578 unsigned long cr2
, u16 error_code
, int emulation_type
);
579 void kvm_report_emulation_failure(struct kvm_vcpu
*cvpu
, const char *context
);
580 void realmode_lgdt(struct kvm_vcpu
*vcpu
, u16 size
, unsigned long address
);
581 void realmode_lidt(struct kvm_vcpu
*vcpu
, u16 size
, unsigned long address
);
582 void realmode_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
,
583 unsigned long *rflags
);
585 unsigned long realmode_get_cr(struct kvm_vcpu
*vcpu
, int cr
);
586 void realmode_set_cr(struct kvm_vcpu
*vcpu
, int cr
, unsigned long value
,
587 unsigned long *rflags
);
588 void kvm_enable_efer_bits(u64
);
589 int kvm_get_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*data
);
590 int kvm_set_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
);
592 struct x86_emulate_ctxt
;
594 int kvm_emulate_pio(struct kvm_vcpu
*vcpu
, int in
,
595 int size
, unsigned port
);
596 int kvm_emulate_pio_string(struct kvm_vcpu
*vcpu
, int in
,
597 int size
, unsigned long count
, int down
,
598 gva_t address
, int rep
, unsigned port
);
599 void kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
);
600 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
);
601 int emulate_invlpg(struct kvm_vcpu
*vcpu
, gva_t address
);
602 int emulate_clts(struct kvm_vcpu
*vcpu
);
603 int emulator_get_dr(struct x86_emulate_ctxt
*ctxt
, int dr
,
604 unsigned long *dest
);
605 int emulator_set_dr(struct x86_emulate_ctxt
*ctxt
, int dr
,
606 unsigned long value
);
608 void kvm_get_segment(struct kvm_vcpu
*vcpu
, struct kvm_segment
*var
, int seg
);
609 int kvm_load_segment_descriptor(struct kvm_vcpu
*vcpu
, u16 selector
,
610 int type_bits
, int seg
);
612 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int reason
);
614 void kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
615 void kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
616 void kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
617 void kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
618 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
);
619 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
);
620 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
622 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
);
623 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
);
625 unsigned long kvm_get_rflags(struct kvm_vcpu
*vcpu
);
626 void kvm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
628 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
629 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
630 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, unsigned long cr2
,
632 bool kvm_require_cpl(struct kvm_vcpu
*vcpu
, int required_cpl
);
634 int kvm_pic_set_irq(void *opaque
, int irq
, int level
);
636 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
);
638 void fx_init(struct kvm_vcpu
*vcpu
);
640 int emulator_write_emulated(unsigned long addr
,
643 struct kvm_vcpu
*vcpu
);
645 unsigned long segment_base(u16 selector
);
647 void kvm_mmu_flush_tlb(struct kvm_vcpu
*vcpu
);
648 void kvm_mmu_pte_write(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
649 const u8
*new, int bytes
,
650 bool guest_initiated
);
651 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
*vcpu
, gva_t gva
);
652 void __kvm_mmu_free_some_pages(struct kvm_vcpu
*vcpu
);
653 int kvm_mmu_load(struct kvm_vcpu
*vcpu
);
654 void kvm_mmu_unload(struct kvm_vcpu
*vcpu
);
655 void kvm_mmu_sync_roots(struct kvm_vcpu
*vcpu
);
657 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
);
659 int kvm_fix_hypercall(struct kvm_vcpu
*vcpu
);
661 int kvm_mmu_page_fault(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 error_code
);
662 void kvm_mmu_invlpg(struct kvm_vcpu
*vcpu
, gva_t gva
);
664 void kvm_enable_tdp(void);
665 void kvm_disable_tdp(void);
667 int load_pdptrs(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
668 int complete_pio(struct kvm_vcpu
*vcpu
);
670 struct kvm_memory_slot
*gfn_to_memslot_unaliased(struct kvm
*kvm
, gfn_t gfn
);
672 static inline struct kvm_mmu_page
*page_header(hpa_t shadow_page
)
674 struct page
*page
= pfn_to_page(shadow_page
>> PAGE_SHIFT
);
676 return (struct kvm_mmu_page
*)page_private(page
);
679 static inline u16
kvm_read_fs(void)
682 asm("mov %%fs, %0" : "=g"(seg
));
686 static inline u16
kvm_read_gs(void)
689 asm("mov %%gs, %0" : "=g"(seg
));
693 static inline u16
kvm_read_ldt(void)
696 asm("sldt %0" : "=g"(ldt
));
700 static inline void kvm_load_fs(u16 sel
)
702 asm("mov %0, %%fs" : : "rm"(sel
));
705 static inline void kvm_load_gs(u16 sel
)
707 asm("mov %0, %%gs" : : "rm"(sel
));
710 static inline void kvm_load_ldt(u16 sel
)
712 asm("lldt %0" : : "rm"(sel
));
715 static inline void kvm_get_idt(struct descriptor_table
*table
)
717 asm("sidt %0" : "=m"(*table
));
720 static inline void kvm_get_gdt(struct descriptor_table
*table
)
722 asm("sgdt %0" : "=m"(*table
));
725 static inline unsigned long kvm_read_tr_base(void)
728 asm("str %0" : "=g"(tr
));
729 return segment_base(tr
);
733 static inline unsigned long read_msr(unsigned long msr
)
742 static inline void kvm_fx_save(struct i387_fxsave_struct
*image
)
744 asm("fxsave (%0)":: "r" (image
));
747 static inline void kvm_fx_restore(struct i387_fxsave_struct
*image
)
749 asm("fxrstor (%0)":: "r" (image
));
752 static inline void kvm_fx_finit(void)
757 static inline u32
get_rdx_init_val(void)
759 return 0x600; /* P6 family */
762 static inline void kvm_inject_gp(struct kvm_vcpu
*vcpu
, u32 error_code
)
764 kvm_queue_exception_e(vcpu
, GP_VECTOR
, error_code
);
767 #define TSS_IOPB_BASE_OFFSET 0x66
768 #define TSS_BASE_SIZE 0x68
769 #define TSS_IOPB_SIZE (65536 / 8)
770 #define TSS_REDIRECTION_SIZE (256 / 8)
771 #define RMODE_TSS_SIZE \
772 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
775 TASK_SWITCH_CALL
= 0,
776 TASK_SWITCH_IRET
= 1,
778 TASK_SWITCH_GATE
= 3,
781 #define HF_GIF_MASK (1 << 0)
782 #define HF_HIF_MASK (1 << 1)
783 #define HF_VINTR_MASK (1 << 2)
784 #define HF_NMI_MASK (1 << 3)
785 #define HF_IRET_MASK (1 << 4)
788 * Hardware virtualization extension instructions may fault if a
789 * reboot turns off virtualization while processes are running.
790 * Trap the fault and ignore the instruction if that happens.
792 asmlinkage
void kvm_handle_fault_on_reboot(void);
794 #define __kvm_handle_fault_on_reboot(insn) \
795 "666: " insn "\n\t" \
796 ".pushsection .fixup, \"ax\" \n" \
798 __ASM_SIZE(push) " $666b \n\t" \
799 "jmp kvm_handle_fault_on_reboot \n\t" \
801 ".pushsection __ex_table, \"a\" \n\t" \
802 _ASM_PTR " 666b, 667b \n\t" \
805 #define KVM_ARCH_WANT_MMU_NOTIFIER
806 int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
807 int kvm_age_hva(struct kvm
*kvm
, unsigned long hva
);
808 void kvm_set_spte_hva(struct kvm
*kvm
, unsigned long hva
, pte_t pte
);
809 int cpuid_maxphyaddr(struct kvm_vcpu
*vcpu
);
810 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
);
811 int kvm_arch_interrupt_allowed(struct kvm_vcpu
*vcpu
);
812 int kvm_cpu_get_interrupt(struct kvm_vcpu
*v
);
814 void kvm_define_shared_msr(unsigned index
, u32 msr
);
815 void kvm_set_shared_msr(unsigned index
, u64 val
, u64 mask
);
817 #endif /* _ASM_X86_KVM_HOST_H */