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_KVM_HOST_H
12 #define ASM_KVM_HOST_H
14 #include <linux/types.h>
16 #include <linux/mmu_notifier.h>
18 #include <linux/kvm.h>
19 #include <linux/kvm_para.h>
20 #include <linux/kvm_types.h>
22 #include <asm/pvclock-abi.h>
25 #define KVM_MAX_VCPUS 16
26 #define KVM_MEMORY_SLOTS 32
27 /* memory slots that does not exposed to userspace */
28 #define KVM_PRIVATE_MEM_SLOTS 4
30 #define KVM_PIO_PAGE_OFFSET 1
31 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
33 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
34 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
35 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
36 0xFFFFFF0000000000ULL)
38 #define KVM_GUEST_CR0_MASK \
39 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
40 | X86_CR0_NW | X86_CR0_CD)
41 #define KVM_VM_CR0_ALWAYS_ON \
42 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
44 #define KVM_GUEST_CR4_MASK \
45 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
46 #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
47 #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
49 #define INVALID_PAGE (~(hpa_t)0)
50 #define UNMAPPED_GVA (~(gpa_t)0)
52 /* shadow tables are PAE even on non-PAE hosts */
53 #define KVM_HPAGE_SHIFT 21
54 #define KVM_HPAGE_SIZE (1UL << KVM_HPAGE_SHIFT)
55 #define KVM_HPAGE_MASK (~(KVM_HPAGE_SIZE - 1))
57 #define KVM_PAGES_PER_HPAGE (KVM_HPAGE_SIZE / PAGE_SIZE)
70 #define SELECTOR_TI_MASK (1 << 2)
71 #define SELECTOR_RPL_MASK 0x03
75 #define KVM_ALIAS_SLOTS 4
77 #define KVM_PERMILLE_MMU_PAGES 20
78 #define KVM_MIN_ALLOC_MMU_PAGES 64
79 #define KVM_MMU_HASH_SHIFT 10
80 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
81 #define KVM_MIN_FREE_MMU_PAGES 5
82 #define KVM_REFILL_PAGES 25
83 #define KVM_MAX_CPUID_ENTRIES 40
84 #define KVM_NR_VAR_MTRR 8
86 extern spinlock_t kvm_lock
;
87 extern struct list_head vm_list
;
125 #include <asm/kvm_x86_emulate.h>
127 #define KVM_NR_MEM_OBJS 40
129 struct kvm_guest_debug
{
136 * We don't want allocation failures within the mmu code, so we preallocate
137 * enough memory for a single page fault in a cache.
139 struct kvm_mmu_memory_cache
{
141 void *objects
[KVM_NR_MEM_OBJS
];
144 #define NR_PTE_CHAIN_ENTRIES 5
146 struct kvm_pte_chain
{
147 u64
*parent_ptes
[NR_PTE_CHAIN_ENTRIES
];
148 struct hlist_node link
;
152 * kvm_mmu_page_role, below, is defined as:
154 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
155 * bits 4:7 - page table level for this shadow (1-4)
156 * bits 8:9 - page table quadrant for 2-level guests
157 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
158 * bits 17:19 - common access permissions for all ptes in this shadow page
160 union kvm_mmu_page_role
{
166 unsigned pad_for_nice_hex_output
:6;
167 unsigned metaphysical
:1;
173 struct kvm_mmu_page
{
174 struct list_head link
;
175 struct hlist_node hash_link
;
178 * The following two entries are used to key the shadow page in the
182 union kvm_mmu_page_role role
;
185 /* hold the gfn of each spte inside spt */
187 unsigned long slot_bitmap
; /* One bit set per slot which has memory
188 * in this shadow page.
190 int multimapped
; /* More than one parent_pte? */
191 int root_count
; /* Currently serving as active root */
193 u64
*parent_pte
; /* !multimapped */
194 struct hlist_head parent_ptes
; /* multimapped, kvm_pte_chain */
199 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
200 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
204 void (*new_cr3
)(struct kvm_vcpu
*vcpu
);
205 int (*page_fault
)(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 err
);
206 void (*free
)(struct kvm_vcpu
*vcpu
);
207 gpa_t (*gva_to_gpa
)(struct kvm_vcpu
*vcpu
, gva_t gva
);
208 void (*prefetch_page
)(struct kvm_vcpu
*vcpu
,
209 struct kvm_mmu_page
*page
);
212 int shadow_root_level
;
217 struct kvm_vcpu_arch
{
219 int interrupt_window_open
;
220 unsigned long irq_summary
; /* bit vector: 1 per word in irq_pending */
221 DECLARE_BITMAP(irq_pending
, KVM_NR_INTERRUPTS
);
222 unsigned long regs
[NR_VCPU_REGS
]; /* for rsp: vcpu_load_rsp_rip() */
223 unsigned long rip
; /* needs vcpu_load_rsp_rip() */
230 u64 pdptrs
[4]; /* pae */
233 struct kvm_lapic
*apic
; /* kernel irqchip context */
236 u64 ia32_misc_enable_msr
;
237 bool tpr_access_reporting
;
241 struct kvm_mmu_memory_cache mmu_pte_chain_cache
;
242 struct kvm_mmu_memory_cache mmu_rmap_desc_cache
;
243 struct kvm_mmu_memory_cache mmu_page_cache
;
244 struct kvm_mmu_memory_cache mmu_page_header_cache
;
246 gfn_t last_pt_write_gfn
;
247 int last_pt_write_count
;
248 u64
*last_pte_updated
;
252 gfn_t gfn
; /* presumed gfn during guest pte update */
253 pfn_t pfn
; /* pfn corresponding to that gfn */
255 unsigned long mmu_seq
;
258 struct i387_fxsave_struct host_fx_image
;
259 struct i387_fxsave_struct guest_fx_image
;
261 gva_t mmio_fault_cr2
;
262 struct kvm_pio_request pio
;
265 struct kvm_queued_exception
{
275 struct kvm_save_segment
{
280 } tr
, es
, ds
, fs
, gs
;
282 int halt_request
; /* real mode on Intel only */
285 struct kvm_cpuid_entry2 cpuid_entries
[KVM_MAX_CPUID_ENTRIES
];
286 /* emulate context */
288 struct x86_emulate_ctxt emulate_ctxt
;
291 struct pvclock_vcpu_time_info hv_clock
;
292 unsigned int hv_clock_tsc_khz
;
293 unsigned int time_offset
;
294 struct page
*time_page
;
301 struct kvm_mem_alias
{
303 unsigned long npages
;
309 struct kvm_mem_alias aliases
[KVM_ALIAS_SLOTS
];
311 unsigned int n_free_mmu_pages
;
312 unsigned int n_requested_mmu_pages
;
313 unsigned int n_alloc_mmu_pages
;
314 struct hlist_head mmu_page_hash
[KVM_NUM_MMU_PAGES
];
316 * Hash table of struct kvm_mmu_page.
318 struct list_head active_mmu_pages
;
319 struct kvm_pic
*vpic
;
320 struct kvm_ioapic
*vioapic
;
321 struct kvm_pit
*vpit
;
323 int round_robin_prev_vcpu
;
324 unsigned int tss_addr
;
325 struct page
*apic_access_page
;
329 struct page
*ept_identity_pagetable
;
330 bool ept_identity_pagetable_done
;
334 u32 mmu_shadow_zapped
;
341 u32 remote_tlb_flush
;
345 struct kvm_vcpu_stat
{
355 u32 irq_window_exits
;
356 u32 nmi_window_exits
;
359 u32 request_irq_exits
;
361 u32 host_state_reload
;
365 u32 insn_emulation_fail
;
369 struct descriptor_table
{
372 } __attribute__((packed
));
375 int (*cpu_has_kvm_support
)(void); /* __init */
376 int (*disabled_by_bios
)(void); /* __init */
377 void (*hardware_enable
)(void *dummy
); /* __init */
378 void (*hardware_disable
)(void *dummy
);
379 void (*check_processor_compatibility
)(void *rtn
);
380 int (*hardware_setup
)(void); /* __init */
381 void (*hardware_unsetup
)(void); /* __exit */
382 bool (*cpu_has_accelerated_tpr
)(void);
384 /* Create, but do not attach this VCPU */
385 struct kvm_vcpu
*(*vcpu_create
)(struct kvm
*kvm
, unsigned id
);
386 void (*vcpu_free
)(struct kvm_vcpu
*vcpu
);
387 int (*vcpu_reset
)(struct kvm_vcpu
*vcpu
);
389 void (*prepare_guest_switch
)(struct kvm_vcpu
*vcpu
);
390 void (*vcpu_load
)(struct kvm_vcpu
*vcpu
, int cpu
);
391 void (*vcpu_put
)(struct kvm_vcpu
*vcpu
);
393 int (*set_guest_debug
)(struct kvm_vcpu
*vcpu
,
394 struct kvm_debug_guest
*dbg
);
395 void (*guest_debug_pre
)(struct kvm_vcpu
*vcpu
);
396 int (*get_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*pdata
);
397 int (*set_msr
)(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
);
398 u64 (*get_segment_base
)(struct kvm_vcpu
*vcpu
, int seg
);
399 void (*get_segment
)(struct kvm_vcpu
*vcpu
,
400 struct kvm_segment
*var
, int seg
);
401 int (*get_cpl
)(struct kvm_vcpu
*vcpu
);
402 void (*set_segment
)(struct kvm_vcpu
*vcpu
,
403 struct kvm_segment
*var
, int seg
);
404 void (*get_cs_db_l_bits
)(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
405 void (*decache_cr4_guest_bits
)(struct kvm_vcpu
*vcpu
);
406 void (*set_cr0
)(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
407 void (*set_cr3
)(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
408 void (*set_cr4
)(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
409 void (*set_efer
)(struct kvm_vcpu
*vcpu
, u64 efer
);
410 void (*get_idt
)(struct kvm_vcpu
*vcpu
, struct descriptor_table
*dt
);
411 void (*set_idt
)(struct kvm_vcpu
*vcpu
, struct descriptor_table
*dt
);
412 void (*get_gdt
)(struct kvm_vcpu
*vcpu
, struct descriptor_table
*dt
);
413 void (*set_gdt
)(struct kvm_vcpu
*vcpu
, struct descriptor_table
*dt
);
414 unsigned long (*get_dr
)(struct kvm_vcpu
*vcpu
, int dr
);
415 void (*set_dr
)(struct kvm_vcpu
*vcpu
, int dr
, unsigned long value
,
417 void (*cache_regs
)(struct kvm_vcpu
*vcpu
);
418 void (*decache_regs
)(struct kvm_vcpu
*vcpu
);
419 unsigned long (*get_rflags
)(struct kvm_vcpu
*vcpu
);
420 void (*set_rflags
)(struct kvm_vcpu
*vcpu
, unsigned long rflags
);
422 void (*tlb_flush
)(struct kvm_vcpu
*vcpu
);
424 void (*run
)(struct kvm_vcpu
*vcpu
, struct kvm_run
*run
);
425 int (*handle_exit
)(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
);
426 void (*skip_emulated_instruction
)(struct kvm_vcpu
*vcpu
);
427 void (*patch_hypercall
)(struct kvm_vcpu
*vcpu
,
428 unsigned char *hypercall_addr
);
429 int (*get_irq
)(struct kvm_vcpu
*vcpu
);
430 void (*set_irq
)(struct kvm_vcpu
*vcpu
, int vec
);
431 void (*queue_exception
)(struct kvm_vcpu
*vcpu
, unsigned nr
,
432 bool has_error_code
, u32 error_code
);
433 bool (*exception_injected
)(struct kvm_vcpu
*vcpu
);
434 void (*inject_pending_irq
)(struct kvm_vcpu
*vcpu
);
435 void (*inject_pending_vectors
)(struct kvm_vcpu
*vcpu
,
436 struct kvm_run
*run
);
438 int (*set_tss_addr
)(struct kvm
*kvm
, unsigned int addr
);
439 int (*get_tdp_level
)(void);
442 extern struct kvm_x86_ops
*kvm_x86_ops
;
444 int kvm_mmu_module_init(void);
445 void kvm_mmu_module_exit(void);
447 void kvm_mmu_destroy(struct kvm_vcpu
*vcpu
);
448 int kvm_mmu_create(struct kvm_vcpu
*vcpu
);
449 int kvm_mmu_setup(struct kvm_vcpu
*vcpu
);
450 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte
, u64 notrap_pte
);
451 void kvm_mmu_set_base_ptes(u64 base_pte
);
452 void kvm_mmu_set_mask_ptes(u64 user_mask
, u64 accessed_mask
,
453 u64 dirty_mask
, u64 nx_mask
, u64 x_mask
);
455 int kvm_mmu_reset_context(struct kvm_vcpu
*vcpu
);
456 void kvm_mmu_slot_remove_write_access(struct kvm
*kvm
, int slot
);
457 void kvm_mmu_zap_all(struct kvm
*kvm
);
458 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm
*kvm
);
459 void kvm_mmu_change_mmu_pages(struct kvm
*kvm
, unsigned int kvm_nr_mmu_pages
);
461 int load_pdptrs(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
463 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
464 const void *val
, int bytes
);
465 int kvm_pv_mmu_op(struct kvm_vcpu
*vcpu
, unsigned long bytes
,
466 gpa_t addr
, unsigned long *ret
);
468 extern bool tdp_enabled
;
470 enum emulation_result
{
471 EMULATE_DONE
, /* no further processing */
472 EMULATE_DO_MMIO
, /* kvm_run filled with mmio request */
473 EMULATE_FAIL
, /* can't emulate this instruction */
476 #define EMULTYPE_NO_DECODE (1 << 0)
477 #define EMULTYPE_TRAP_UD (1 << 1)
478 int emulate_instruction(struct kvm_vcpu
*vcpu
, struct kvm_run
*run
,
479 unsigned long cr2
, u16 error_code
, int emulation_type
);
480 void kvm_report_emulation_failure(struct kvm_vcpu
*cvpu
, const char *context
);
481 void realmode_lgdt(struct kvm_vcpu
*vcpu
, u16 size
, unsigned long address
);
482 void realmode_lidt(struct kvm_vcpu
*vcpu
, u16 size
, unsigned long address
);
483 void realmode_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
,
484 unsigned long *rflags
);
486 unsigned long realmode_get_cr(struct kvm_vcpu
*vcpu
, int cr
);
487 void realmode_set_cr(struct kvm_vcpu
*vcpu
, int cr
, unsigned long value
,
488 unsigned long *rflags
);
489 void kvm_enable_efer_bits(u64
);
490 int kvm_get_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*data
);
491 int kvm_set_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
);
493 struct x86_emulate_ctxt
;
495 int kvm_emulate_pio(struct kvm_vcpu
*vcpu
, struct kvm_run
*run
, int in
,
496 int size
, unsigned port
);
497 int kvm_emulate_pio_string(struct kvm_vcpu
*vcpu
, struct kvm_run
*run
, int in
,
498 int size
, unsigned long count
, int down
,
499 gva_t address
, int rep
, unsigned port
);
500 void kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
);
501 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
);
502 int emulate_invlpg(struct kvm_vcpu
*vcpu
, gva_t address
);
503 int emulate_clts(struct kvm_vcpu
*vcpu
);
504 int emulator_get_dr(struct x86_emulate_ctxt
*ctxt
, int dr
,
505 unsigned long *dest
);
506 int emulator_set_dr(struct x86_emulate_ctxt
*ctxt
, int dr
,
507 unsigned long value
);
509 void kvm_get_segment(struct kvm_vcpu
*vcpu
, struct kvm_segment
*var
, int seg
);
510 int kvm_load_segment_descriptor(struct kvm_vcpu
*vcpu
, u16 selector
,
511 int type_bits
, int seg
);
513 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int reason
);
515 void kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
516 void kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
517 void kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
);
518 void kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
519 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
);
520 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
);
521 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
);
523 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
);
524 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
);
526 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
);
527 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
);
528 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, unsigned long cr2
,
531 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
);
533 void fx_init(struct kvm_vcpu
*vcpu
);
535 int emulator_read_std(unsigned long addr
,
538 struct kvm_vcpu
*vcpu
);
539 int emulator_write_emulated(unsigned long addr
,
542 struct kvm_vcpu
*vcpu
);
544 unsigned long segment_base(u16 selector
);
546 void kvm_mmu_flush_tlb(struct kvm_vcpu
*vcpu
);
547 void kvm_mmu_pte_write(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
548 const u8
*new, int bytes
);
549 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
*vcpu
, gva_t gva
);
550 void __kvm_mmu_free_some_pages(struct kvm_vcpu
*vcpu
);
551 int kvm_mmu_load(struct kvm_vcpu
*vcpu
);
552 void kvm_mmu_unload(struct kvm_vcpu
*vcpu
);
554 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
);
556 int kvm_fix_hypercall(struct kvm_vcpu
*vcpu
);
558 int kvm_mmu_page_fault(struct kvm_vcpu
*vcpu
, gva_t gva
, u32 error_code
);
560 void kvm_enable_tdp(void);
561 void kvm_disable_tdp(void);
563 int load_pdptrs(struct kvm_vcpu
*vcpu
, unsigned long cr3
);
564 int complete_pio(struct kvm_vcpu
*vcpu
);
566 static inline struct kvm_mmu_page
*page_header(hpa_t shadow_page
)
568 struct page
*page
= pfn_to_page(shadow_page
>> PAGE_SHIFT
);
570 return (struct kvm_mmu_page
*)page_private(page
);
573 static inline u16
kvm_read_fs(void)
576 asm("mov %%fs, %0" : "=g"(seg
));
580 static inline u16
kvm_read_gs(void)
583 asm("mov %%gs, %0" : "=g"(seg
));
587 static inline u16
kvm_read_ldt(void)
590 asm("sldt %0" : "=g"(ldt
));
594 static inline void kvm_load_fs(u16 sel
)
596 asm("mov %0, %%fs" : : "rm"(sel
));
599 static inline void kvm_load_gs(u16 sel
)
601 asm("mov %0, %%gs" : : "rm"(sel
));
604 static inline void kvm_load_ldt(u16 sel
)
606 asm("lldt %0" : : "rm"(sel
));
609 static inline void kvm_get_idt(struct descriptor_table
*table
)
611 asm("sidt %0" : "=m"(*table
));
614 static inline void kvm_get_gdt(struct descriptor_table
*table
)
616 asm("sgdt %0" : "=m"(*table
));
619 static inline unsigned long kvm_read_tr_base(void)
622 asm("str %0" : "=g"(tr
));
623 return segment_base(tr
);
627 static inline unsigned long read_msr(unsigned long msr
)
636 static inline void kvm_fx_save(struct i387_fxsave_struct
*image
)
638 asm("fxsave (%0)":: "r" (image
));
641 static inline void kvm_fx_restore(struct i387_fxsave_struct
*image
)
643 asm("fxrstor (%0)":: "r" (image
));
646 static inline void kvm_fx_finit(void)
651 static inline u32
get_rdx_init_val(void)
653 return 0x600; /* P6 family */
656 static inline void kvm_inject_gp(struct kvm_vcpu
*vcpu
, u32 error_code
)
658 kvm_queue_exception_e(vcpu
, GP_VECTOR
, error_code
);
661 #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
662 #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
663 #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
664 #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
665 #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
666 #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
667 #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
668 #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
669 #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
670 #define ASM_VMX_INVEPT ".byte 0x66, 0x0f, 0x38, 0x80, 0x08"
671 #define ASM_VMX_INVVPID ".byte 0x66, 0x0f, 0x38, 0x81, 0x08"
673 #define MSR_IA32_TIME_STAMP_COUNTER 0x010
675 #define TSS_IOPB_BASE_OFFSET 0x66
676 #define TSS_BASE_SIZE 0x68
677 #define TSS_IOPB_SIZE (65536 / 8)
678 #define TSS_REDIRECTION_SIZE (256 / 8)
679 #define RMODE_TSS_SIZE \
680 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
683 TASK_SWITCH_CALL
= 0,
684 TASK_SWITCH_IRET
= 1,
686 TASK_SWITCH_GATE
= 3,
689 #define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
690 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
691 vcpu, 5, d1, d2, d3, d4, d5)
692 #define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
693 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
694 vcpu, 4, d1, d2, d3, d4, 0)
695 #define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
696 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
697 vcpu, 3, d1, d2, d3, 0, 0)
698 #define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
699 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
700 vcpu, 2, d1, d2, 0, 0, 0)
701 #define KVMTRACE_1D(evt, vcpu, d1, name) \
702 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
703 vcpu, 1, d1, 0, 0, 0, 0)
704 #define KVMTRACE_0D(evt, vcpu, name) \
705 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
706 vcpu, 0, 0, 0, 0, 0, 0)
709 # define KVM_EX_ENTRY ".quad"
710 # define KVM_EX_PUSH "pushq"
712 # define KVM_EX_ENTRY ".long"
713 # define KVM_EX_PUSH "pushl"
717 * Hardware virtualization extension instructions may fault if a
718 * reboot turns off virtualization while processes are running.
719 * Trap the fault and ignore the instruction if that happens.
721 asmlinkage
void kvm_handle_fault_on_reboot(void);
723 #define __kvm_handle_fault_on_reboot(insn) \
724 "666: " insn "\n\t" \
725 ".pushsection .fixup, \"ax\" \n" \
727 KVM_EX_PUSH " $666b \n\t" \
728 "jmp kvm_handle_fault_on_reboot \n\t" \
730 ".pushsection __ex_table, \"a\" \n\t" \
731 KVM_EX_ENTRY " 666b, 667b \n\t" \
734 #define KVM_ARCH_WANT_MMU_NOTIFIER
735 int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
736 int kvm_age_hva(struct kvm
*kvm
, unsigned long hva
);