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>
17 #include <linux/kvm.h>
18 #include <linux/kvm_para.h>
19 #include <linux/kvm_types.h>
21 #include <asm/pvclock-abi.h>
24 #define KVM_MAX_VCPUS 16
25 #define KVM_MEMORY_SLOTS 32
26 /* memory slots that does not exposed to userspace */
27 #define KVM_PRIVATE_MEM_SLOTS 4
29 #define KVM_PIO_PAGE_OFFSET 1
30 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
32 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
33 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
34 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
35 0xFFFFFF0000000000ULL)
37 #define KVM_GUEST_CR0_MASK \
38 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
39 | X86_CR0_NW | X86_CR0_CD)
40 #define KVM_VM_CR0_ALWAYS_ON \
41 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
43 #define KVM_GUEST_CR4_MASK \
44 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
45 #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
46 #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
48 #define INVALID_PAGE (~(hpa_t)0)
49 #define UNMAPPED_GVA (~(gpa_t)0)
51 /* shadow tables are PAE even on non-PAE hosts */
52 #define KVM_HPAGE_SHIFT 21
53 #define KVM_HPAGE_SIZE (1UL << KVM_HPAGE_SHIFT)
54 #define KVM_HPAGE_MASK (~(KVM_HPAGE_SIZE - 1))
56 #define KVM_PAGES_PER_HPAGE (KVM_HPAGE_SIZE / PAGE_SIZE)
69 #define SELECTOR_TI_MASK (1 << 2)
70 #define SELECTOR_RPL_MASK 0x03
74 #define KVM_ALIAS_SLOTS 4
76 #define KVM_PERMILLE_MMU_PAGES 20
77 #define KVM_MIN_ALLOC_MMU_PAGES 64
78 #define KVM_MMU_HASH_SHIFT 10
79 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
80 #define KVM_MIN_FREE_MMU_PAGES 5
81 #define KVM_REFILL_PAGES 25
82 #define KVM_MAX_CPUID_ENTRIES 40
83 #define KVM_NR_VAR_MTRR 8
85 extern spinlock_t kvm_lock;
86 extern struct list_head vm_list;
124 #include <asm/kvm_x86_emulate.h>
126 #define KVM_NR_MEM_OBJS 40
128 struct kvm_guest_debug {
135 * We don't want allocation failures within the mmu code, so we preallocate
136 * enough memory for a single page fault in a cache.
138 struct kvm_mmu_memory_cache {
140 void *objects[KVM_NR_MEM_OBJS];
143 #define NR_PTE_CHAIN_ENTRIES 5
145 struct kvm_pte_chain {
146 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
147 struct hlist_node link;
151 * kvm_mmu_page_role, below, is defined as:
153 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
154 * bits 4:7 - page table level for this shadow (1-4)
155 * bits 8:9 - page table quadrant for 2-level guests
156 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
157 * bits 17:19 - common access permissions for all ptes in this shadow page
159 union kvm_mmu_page_role {
165 unsigned pad_for_nice_hex_output:6;
166 unsigned metaphysical:1;
172 struct kvm_mmu_page {
173 struct list_head link;
174 struct hlist_node hash_link;
177 * The following two entries are used to key the shadow page in the
181 union kvm_mmu_page_role role;
184 /* hold the gfn of each spte inside spt */
186 unsigned long slot_bitmap; /* One bit set per slot which has memory
187 * in this shadow page.
189 int multimapped; /* More than one parent_pte? */
190 int root_count; /* Currently serving as active root */
192 u64 *parent_pte; /* !multimapped */
193 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
198 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
199 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
203 void (*new_cr3)(struct kvm_vcpu *vcpu);
204 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
205 void (*free)(struct kvm_vcpu *vcpu);
206 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
207 void (*prefetch_page)(struct kvm_vcpu *vcpu,
208 struct kvm_mmu_page *page);
211 int shadow_root_level;
216 struct kvm_vcpu_arch {
218 int interrupt_window_open;
219 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
220 DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
221 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
222 unsigned long rip; /* needs vcpu_load_rsp_rip() */
229 u64 pdptrs[4]; /* pae */
232 struct kvm_lapic *apic; /* kernel irqchip context */
235 u64 ia32_misc_enable_msr;
236 bool tpr_access_reporting;
240 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
241 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
242 struct kvm_mmu_memory_cache mmu_page_cache;
243 struct kvm_mmu_memory_cache mmu_page_header_cache;
245 gfn_t last_pt_write_gfn;
246 int last_pt_write_count;
247 u64 *last_pte_updated;
251 gfn_t gfn; /* presumed gfn during guest pte update */
252 pfn_t pfn; /* pfn corresponding to that gfn */
256 struct i387_fxsave_struct host_fx_image;
257 struct i387_fxsave_struct guest_fx_image;
259 gva_t mmio_fault_cr2;
260 struct kvm_pio_request pio;
263 struct kvm_queued_exception {
273 struct kvm_save_segment {
278 } tr, es, ds, fs, gs;
280 int halt_request; /* real mode on Intel only */
283 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
284 /* emulate context */
286 struct x86_emulate_ctxt emulate_ctxt;
289 struct pvclock_vcpu_time_info hv_clock;
290 unsigned int hv_clock_tsc_khz;
291 unsigned int time_offset;
292 struct page *time_page;
299 struct kvm_mem_alias {
301 unsigned long npages;
307 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
309 unsigned int n_free_mmu_pages;
310 unsigned int n_requested_mmu_pages;
311 unsigned int n_alloc_mmu_pages;
312 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
314 * Hash table of struct kvm_mmu_page.
316 struct list_head active_mmu_pages;
317 struct kvm_pic *vpic;
318 struct kvm_ioapic *vioapic;
319 struct kvm_pit *vpit;
321 int round_robin_prev_vcpu;
322 unsigned int tss_addr;
323 struct page *apic_access_page;
327 struct page *ept_identity_pagetable;
328 bool ept_identity_pagetable_done;
332 u32 mmu_shadow_zapped;
339 u32 remote_tlb_flush;
343 struct kvm_vcpu_stat {
353 u32 irq_window_exits;
354 u32 nmi_window_exits;
357 u32 request_irq_exits;
359 u32 host_state_reload;
363 u32 insn_emulation_fail;
367 struct descriptor_table {
370 } __attribute__((packed));
373 int (*cpu_has_kvm_support)(void); /* __init */
374 int (*disabled_by_bios)(void); /* __init */
375 void (*hardware_enable)(void *dummy); /* __init */
376 void (*hardware_disable)(void *dummy);
377 void (*check_processor_compatibility)(void *rtn);
378 int (*hardware_setup)(void); /* __init */
379 void (*hardware_unsetup)(void); /* __exit */
380 bool (*cpu_has_accelerated_tpr)(void);
382 /* Create, but do not attach this VCPU */
383 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
384 void (*vcpu_free)(struct kvm_vcpu *vcpu);
385 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
387 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
388 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
389 void (*vcpu_put)(struct kvm_vcpu *vcpu);
391 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
392 struct kvm_debug_guest *dbg);
393 void (*guest_debug_pre)(struct kvm_vcpu *vcpu);
394 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
395 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
396 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
397 void (*get_segment)(struct kvm_vcpu *vcpu,
398 struct kvm_segment *var, int seg);
399 int (*get_cpl)(struct kvm_vcpu *vcpu);
400 void (*set_segment)(struct kvm_vcpu *vcpu,
401 struct kvm_segment *var, int seg);
402 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
403 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
404 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
405 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
406 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
407 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
408 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
409 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
410 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
411 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
412 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
413 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
415 void (*cache_regs)(struct kvm_vcpu *vcpu);
416 void (*decache_regs)(struct kvm_vcpu *vcpu);
417 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
418 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
420 void (*tlb_flush)(struct kvm_vcpu *vcpu);
422 void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
423 int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
424 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
425 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
426 unsigned char *hypercall_addr);
427 int (*get_irq)(struct kvm_vcpu *vcpu);
428 void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
429 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
430 bool has_error_code, u32 error_code);
431 bool (*exception_injected)(struct kvm_vcpu *vcpu);
432 void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
433 void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
434 struct kvm_run *run);
436 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
437 int (*get_tdp_level)(void);
440 extern struct kvm_x86_ops *kvm_x86_ops;
442 int kvm_mmu_module_init(void);
443 void kvm_mmu_module_exit(void);
445 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
446 int kvm_mmu_create(struct kvm_vcpu *vcpu);
447 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
448 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
449 void kvm_mmu_set_base_ptes(u64 base_pte);
450 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
451 u64 dirty_mask, u64 nx_mask, u64 x_mask);
453 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
454 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
455 void kvm_mmu_zap_all(struct kvm *kvm);
456 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
457 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
459 int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
461 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
462 const void *val, int bytes);
463 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
464 gpa_t addr, unsigned long *ret);
466 extern bool tdp_enabled;
468 enum emulation_result {
469 EMULATE_DONE, /* no further processing */
470 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
471 EMULATE_FAIL, /* can't emulate this instruction */
474 #define EMULTYPE_NO_DECODE (1 << 0)
475 #define EMULTYPE_TRAP_UD (1 << 1)
476 int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
477 unsigned long cr2, u16 error_code, int emulation_type);
478 void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
479 void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
480 void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
481 void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
482 unsigned long *rflags);
484 unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
485 void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
486 unsigned long *rflags);
487 void kvm_enable_efer_bits(u64);
488 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
489 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
491 struct x86_emulate_ctxt;
493 int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
494 int size, unsigned port);
495 int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
496 int size, unsigned long count, int down,
497 gva_t address, int rep, unsigned port);
498 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
499 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
500 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
501 int emulate_clts(struct kvm_vcpu *vcpu);
502 int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
503 unsigned long *dest);
504 int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
505 unsigned long value);
507 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
508 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector,
509 int type_bits, int seg);
511 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason);
513 void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
514 void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
515 void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
516 void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
517 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
518 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
519 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
521 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
522 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
524 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
525 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
526 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
529 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
531 void fx_init(struct kvm_vcpu *vcpu);
533 int emulator_read_std(unsigned long addr,
536 struct kvm_vcpu *vcpu);
537 int emulator_write_emulated(unsigned long addr,
540 struct kvm_vcpu *vcpu);
542 unsigned long segment_base(u16 selector);
544 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
545 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
546 const u8 *new, int bytes);
547 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
548 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
549 int kvm_mmu_load(struct kvm_vcpu *vcpu);
550 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
552 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
554 int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
556 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
558 void kvm_enable_tdp(void);
559 void kvm_disable_tdp(void);
561 int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
562 int complete_pio(struct kvm_vcpu *vcpu);
564 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
566 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
568 return (struct kvm_mmu_page *)page_private(page);
571 static inline u16 kvm_read_fs(void)
574 asm("mov %%fs, %0" : "=g"(seg));
578 static inline u16 kvm_read_gs(void)
581 asm("mov %%gs, %0" : "=g"(seg));
585 static inline u16 kvm_read_ldt(void)
588 asm("sldt %0" : "=g"(ldt));
592 static inline void kvm_load_fs(u16 sel)
594 asm("mov %0, %%fs" : : "rm"(sel));
597 static inline void kvm_load_gs(u16 sel)
599 asm("mov %0, %%gs" : : "rm"(sel));
602 static inline void kvm_load_ldt(u16 sel)
604 asm("lldt %0" : : "rm"(sel));
607 static inline void kvm_get_idt(struct descriptor_table *table)
609 asm("sidt %0" : "=m"(*table));
612 static inline void kvm_get_gdt(struct descriptor_table *table)
614 asm("sgdt %0" : "=m"(*table));
617 static inline unsigned long kvm_read_tr_base(void)
620 asm("str %0" : "=g"(tr));
621 return segment_base(tr);
625 static inline unsigned long read_msr(unsigned long msr)
634 static inline void kvm_fx_save(struct i387_fxsave_struct *image)
636 asm("fxsave (%0)":: "r" (image));
639 static inline void kvm_fx_restore(struct i387_fxsave_struct *image)
641 asm("fxrstor (%0)":: "r" (image));
644 static inline void kvm_fx_finit(void)
649 static inline u32 get_rdx_init_val(void)
651 return 0x600; /* P6 family */
654 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
656 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
659 #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
660 #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
661 #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
662 #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
663 #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
664 #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
665 #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
666 #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
667 #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
668 #define ASM_VMX_INVEPT ".byte 0x66, 0x0f, 0x38, 0x80, 0x08"
669 #define ASM_VMX_INVVPID ".byte 0x66, 0x0f, 0x38, 0x81, 0x08"
671 #define MSR_IA32_TIME_STAMP_COUNTER 0x010
673 #define TSS_IOPB_BASE_OFFSET 0x66
674 #define TSS_BASE_SIZE 0x68
675 #define TSS_IOPB_SIZE (65536 / 8)
676 #define TSS_REDIRECTION_SIZE (256 / 8)
677 #define RMODE_TSS_SIZE \
678 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
681 TASK_SWITCH_CALL = 0,
682 TASK_SWITCH_IRET = 1,
684 TASK_SWITCH_GATE = 3,
687 #define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
688 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
689 vcpu, 5, d1, d2, d3, d4, d5)
690 #define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
691 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
692 vcpu, 4, d1, d2, d3, d4, 0)
693 #define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
694 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
695 vcpu, 3, d1, d2, d3, 0, 0)
696 #define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
697 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
698 vcpu, 2, d1, d2, 0, 0, 0)
699 #define KVMTRACE_1D(evt, vcpu, d1, name) \
700 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
701 vcpu, 1, d1, 0, 0, 0, 0)
702 #define KVMTRACE_0D(evt, vcpu, name) \
703 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
704 vcpu, 0, 0, 0, 0, 0, 0)
707 # define KVM_EX_ENTRY ".quad"
708 # define KVM_EX_PUSH "pushq"
710 # define KVM_EX_ENTRY ".long"
711 # define KVM_EX_PUSH "pushl"
715 * Hardware virtualization extension instructions may fault if a
716 * reboot turns off virtualization while processes are running.
717 * Trap the fault and ignore the instruction if that happens.
719 asmlinkage void kvm_handle_fault_on_reboot(void);
721 #define __kvm_handle_fault_on_reboot(insn) \
722 "666: " insn "\n\t" \
723 ".pushsection .text.fixup, \"ax\" \n" \
725 KVM_EX_PUSH " $666b \n\t" \
726 "jmp kvm_handle_fault_on_reboot \n\t" \
728 ".pushsection __ex_table, \"a\" \n\t" \
729 KVM_EX_ENTRY " 666b, 667b \n\t" \
732 #endif /* ASM_X86__KVM_HOST_H */