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>
18 #include <linux/kvm.h>
19 #include <linux/kvm_para.h>
20 #include <linux/kvm_types.h>
22 #include <asm/pvclock-abi.h>
25 #include <asm/msr-index.h>
27 #define KVM_MAX_VCPUS 16
28 #define KVM_MEMORY_SLOTS 32
29 /* memory slots that does not exposed to userspace */
30 #define KVM_PRIVATE_MEM_SLOTS 4
32 #define KVM_PIO_PAGE_OFFSET 1
33 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
35 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
36 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
37 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
38 0xFFFFFF0000000000ULL)
40 #define KVM_GUEST_CR0_MASK_UNRESTRICTED_GUEST \
41 (X86_CR0_WP | X86_CR0_NE | X86_CR0_NW | X86_CR0_CD)
42 #define KVM_GUEST_CR0_MASK \
43 (KVM_GUEST_CR0_MASK_UNRESTRICTED_GUEST | X86_CR0_PG | X86_CR0_PE)
44 #define KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST \
45 (X86_CR0_WP | X86_CR0_NE | X86_CR0_TS | X86_CR0_MP)
46 #define KVM_VM_CR0_ALWAYS_ON \
47 (KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST | X86_CR0_PG | X86_CR0_PE)
48 #define KVM_GUEST_CR4_MASK \
49 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
50 #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
51 #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
53 #define INVALID_PAGE (~(hpa_t)0)
54 #define UNMAPPED_GVA (~(gpa_t)0)
56 /* shadow tables are PAE even on non-PAE hosts */
57 #define KVM_HPAGE_SHIFT 21
58 #define KVM_HPAGE_SIZE (1UL << KVM_HPAGE_SHIFT)
59 #define KVM_HPAGE_MASK (~(KVM_HPAGE_SIZE - 1))
61 #define KVM_PAGES_PER_HPAGE (KVM_HPAGE_SIZE / PAGE_SIZE)
79 #define SELECTOR_TI_MASK (1 << 2)
80 #define SELECTOR_RPL_MASK 0x03
84 #define KVM_ALIAS_SLOTS 4
86 #define KVM_PERMILLE_MMU_PAGES 20
87 #define KVM_MIN_ALLOC_MMU_PAGES 64
88 #define KVM_MMU_HASH_SHIFT 10
89 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
90 #define KVM_MIN_FREE_MMU_PAGES 5
91 #define KVM_REFILL_PAGES 25
92 #define KVM_MAX_CPUID_ENTRIES 40
93 #define KVM_NR_FIXED_MTRR_REGION 88
94 #define KVM_NR_VAR_MTRR 8
96 extern spinlock_t kvm_lock;
97 extern struct list_head vm_list;
126 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
140 #include <asm/kvm_x86_emulate.h>
142 #define KVM_NR_MEM_OBJS 40
144 #define KVM_NR_DB_REGS 4
146 #define DR6_BD (1 << 13)
147 #define DR6_BS (1 << 14)
148 #define DR6_FIXED_1 0xffff0ff0
149 #define DR6_VOLATILE 0x0000e00f
151 #define DR7_BP_EN_MASK 0x000000ff
152 #define DR7_GE (1 << 9)
153 #define DR7_GD (1 << 13)
154 #define DR7_FIXED_1 0x00000400
155 #define DR7_VOLATILE 0xffff23ff
158 * We don't want allocation failures within the mmu code, so we preallocate
159 * enough memory for a single page fault in a cache.
161 struct kvm_mmu_memory_cache {
163 void *objects[KVM_NR_MEM_OBJS];
166 #define NR_PTE_CHAIN_ENTRIES 5
168 struct kvm_pte_chain {
169 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
170 struct hlist_node link;
174 * kvm_mmu_page_role, below, is defined as:
176 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
177 * bits 4:7 - page table level for this shadow (1-4)
178 * bits 8:9 - page table quadrant for 2-level guests
179 * bit 16 - direct mapping of virtual to physical mapping at gfn
180 * used for real mode and two-dimensional paging
181 * bits 17:19 - common access permissions for all ptes in this shadow page
183 union kvm_mmu_page_role {
189 unsigned pad_for_nice_hex_output:6;
198 struct kvm_mmu_page {
199 struct list_head link;
200 struct hlist_node hash_link;
202 struct list_head oos_link;
205 * The following two entries are used to key the shadow page in the
209 union kvm_mmu_page_role role;
212 /* hold the gfn of each spte inside spt */
215 * One bit set per slot which has memory
216 * in this shadow page.
218 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
219 int multimapped; /* More than one parent_pte? */
220 int root_count; /* Currently serving as active root */
222 unsigned int unsync_children;
224 u64 *parent_pte; /* !multimapped */
225 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
227 DECLARE_BITMAP(unsync_child_bitmap, 512);
230 struct kvm_pv_mmu_op_buffer {
234 char buf[512] __aligned(sizeof(long));
237 struct kvm_pio_request {
250 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
251 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
255 void (*new_cr3)(struct kvm_vcpu *vcpu);
256 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
257 void (*free)(struct kvm_vcpu *vcpu);
258 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
259 void (*prefetch_page)(struct kvm_vcpu *vcpu,
260 struct kvm_mmu_page *page);
261 int (*sync_page)(struct kvm_vcpu *vcpu,
262 struct kvm_mmu_page *sp);
263 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
266 int shadow_root_level;
267 union kvm_mmu_page_role base_role;
270 u64 rsvd_bits_mask[2][4];
273 struct kvm_vcpu_arch {
276 * rip and regs accesses must go through
277 * kvm_{register,rip}_{read,write} functions.
279 unsigned long regs[NR_VCPU_REGS];
289 u64 pdptrs[4]; /* pae */
292 struct kvm_lapic *apic; /* kernel irqchip context */
293 int32_t apic_arb_prio;
296 u64 ia32_misc_enable_msr;
297 bool tpr_access_reporting;
300 /* only needed in kvm_pv_mmu_op() path, but it's hot so
301 * put it here to avoid allocation */
302 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
304 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
305 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
306 struct kvm_mmu_memory_cache mmu_page_cache;
307 struct kvm_mmu_memory_cache mmu_page_header_cache;
309 gfn_t last_pt_write_gfn;
310 int last_pt_write_count;
311 u64 *last_pte_updated;
315 gfn_t gfn; /* presumed gfn during guest pte update */
316 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 {
346 struct kvm_save_segment {
351 } tr, es, ds, fs, gs;
353 int halt_request; /* real mode on Intel only */
356 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
357 /* emulate context */
359 struct x86_emulate_ctxt emulate_ctxt;
362 struct pvclock_vcpu_time_info hv_clock;
363 unsigned int hv_clock_tsc_khz;
364 unsigned int time_offset;
365 struct page *time_page;
367 bool singlestep; /* guest is single stepped by KVM */
371 struct mtrr_state_type mtrr_state;
375 unsigned long host_db[KVM_NR_DB_REGS];
376 unsigned long host_dr6;
377 unsigned long host_dr7;
378 unsigned long db[KVM_NR_DB_REGS];
381 unsigned long eff_db[KVM_NR_DB_REGS];
389 struct kvm_mem_alias {
391 unsigned long npages;
397 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
399 unsigned int n_free_mmu_pages;
400 unsigned int n_requested_mmu_pages;
401 unsigned int n_alloc_mmu_pages;
402 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
404 * Hash table of struct kvm_mmu_page.
406 struct list_head active_mmu_pages;
407 struct list_head assigned_dev_head;
408 struct iommu_domain *iommu_domain;
410 struct kvm_pic *vpic;
411 struct kvm_ioapic *vioapic;
412 struct kvm_pit *vpit;
413 struct hlist_head irq_ack_notifier_list;
414 int vapics_in_nmi_mode;
416 unsigned int tss_addr;
417 struct page *apic_access_page;
421 struct page *ept_identity_pagetable;
422 bool ept_identity_pagetable_done;
424 unsigned long irq_sources_bitmap;
425 unsigned long irq_states[KVM_IOAPIC_NUM_PINS];
430 u32 mmu_shadow_zapped;
438 u32 remote_tlb_flush;
442 struct kvm_vcpu_stat {
452 u32 irq_window_exits;
453 u32 nmi_window_exits;
456 u32 request_irq_exits;
458 u32 host_state_reload;
462 u32 insn_emulation_fail;
468 struct descriptor_table {
471 } __attribute__((packed));
474 int (*cpu_has_kvm_support)(void); /* __init */
475 int (*disabled_by_bios)(void); /* __init */
476 void (*hardware_enable)(void *dummy); /* __init */
477 void (*hardware_disable)(void *dummy);
478 void (*check_processor_compatibility)(void *rtn);
479 int (*hardware_setup)(void); /* __init */
480 void (*hardware_unsetup)(void); /* __exit */
481 bool (*cpu_has_accelerated_tpr)(void);
483 /* Create, but do not attach this VCPU */
484 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
485 void (*vcpu_free)(struct kvm_vcpu *vcpu);
486 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
488 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
489 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
490 void (*vcpu_put)(struct kvm_vcpu *vcpu);
492 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
493 struct kvm_guest_debug *dbg);
494 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
495 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
496 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
497 void (*get_segment)(struct kvm_vcpu *vcpu,
498 struct kvm_segment *var, int seg);
499 int (*get_cpl)(struct kvm_vcpu *vcpu);
500 void (*set_segment)(struct kvm_vcpu *vcpu,
501 struct kvm_segment *var, int seg);
502 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
503 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
504 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
505 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
506 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
507 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
508 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
509 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
510 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
511 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
512 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
513 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
515 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
516 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
517 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
519 void (*tlb_flush)(struct kvm_vcpu *vcpu);
521 void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
522 int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
523 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
524 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
525 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
526 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
527 unsigned char *hypercall_addr);
528 void (*set_irq)(struct kvm_vcpu *vcpu);
529 void (*set_nmi)(struct kvm_vcpu *vcpu);
530 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
531 bool has_error_code, u32 error_code);
532 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
533 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
534 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
535 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
536 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
537 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
538 int (*get_tdp_level)(void);
539 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
542 extern struct kvm_x86_ops *kvm_x86_ops;
544 int kvm_mmu_module_init(void);
545 void kvm_mmu_module_exit(void);
547 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
548 int kvm_mmu_create(struct kvm_vcpu *vcpu);
549 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
550 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
551 void kvm_mmu_set_base_ptes(u64 base_pte);
552 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
553 u64 dirty_mask, u64 nx_mask, u64 x_mask);
555 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
556 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
557 void kvm_mmu_zap_all(struct kvm *kvm);
558 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
559 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
561 int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
563 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
564 const void *val, int bytes);
565 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
566 gpa_t addr, unsigned long *ret);
567 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
569 extern bool tdp_enabled;
571 enum emulation_result {
572 EMULATE_DONE, /* no further processing */
573 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
574 EMULATE_FAIL, /* can't emulate this instruction */
577 #define EMULTYPE_NO_DECODE (1 << 0)
578 #define EMULTYPE_TRAP_UD (1 << 1)
579 #define EMULTYPE_SKIP (1 << 2)
580 int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
581 unsigned long cr2, u16 error_code, int emulation_type);
582 void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
583 void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
584 void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
585 void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
586 unsigned long *rflags);
588 unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
589 void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
590 unsigned long *rflags);
591 void kvm_enable_efer_bits(u64);
592 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
593 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
595 struct x86_emulate_ctxt;
597 int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
598 int size, unsigned port);
599 int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
600 int size, unsigned long count, int down,
601 gva_t address, int rep, unsigned port);
602 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
603 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
604 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
605 int emulate_clts(struct kvm_vcpu *vcpu);
606 int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
607 unsigned long *dest);
608 int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
609 unsigned long value);
611 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
612 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector,
613 int type_bits, int seg);
615 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason);
617 void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
618 void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
619 void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
620 void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
621 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
622 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
623 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
625 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
626 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
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,
633 int kvm_pic_set_irq(void *opaque, int irq, int level);
635 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
637 void fx_init(struct kvm_vcpu *vcpu);
639 int emulator_write_emulated(unsigned long addr,
642 struct kvm_vcpu *vcpu);
644 unsigned long segment_base(u16 selector);
646 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
647 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
648 const u8 *new, int bytes,
649 bool guest_initiated);
650 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
651 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
652 int kvm_mmu_load(struct kvm_vcpu *vcpu);
653 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
654 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
656 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
658 int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
660 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
661 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
663 void kvm_enable_tdp(void);
664 void kvm_disable_tdp(void);
666 int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
667 int complete_pio(struct kvm_vcpu *vcpu);
669 struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn);
671 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
673 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
675 return (struct kvm_mmu_page *)page_private(page);
678 static inline u16 kvm_read_fs(void)
681 asm("mov %%fs, %0" : "=g"(seg));
685 static inline u16 kvm_read_gs(void)
688 asm("mov %%gs, %0" : "=g"(seg));
692 static inline u16 kvm_read_ldt(void)
695 asm("sldt %0" : "=g"(ldt));
699 static inline void kvm_load_fs(u16 sel)
701 asm("mov %0, %%fs" : : "rm"(sel));
704 static inline void kvm_load_gs(u16 sel)
706 asm("mov %0, %%gs" : : "rm"(sel));
709 static inline void kvm_load_ldt(u16 sel)
711 asm("lldt %0" : : "rm"(sel));
714 static inline void kvm_get_idt(struct descriptor_table *table)
716 asm("sidt %0" : "=m"(*table));
719 static inline void kvm_get_gdt(struct descriptor_table *table)
721 asm("sgdt %0" : "=m"(*table));
724 static inline unsigned long kvm_read_tr_base(void)
727 asm("str %0" : "=g"(tr));
728 return segment_base(tr);
732 static inline unsigned long read_msr(unsigned long msr)
741 static inline void kvm_fx_save(struct i387_fxsave_struct *image)
743 asm("fxsave (%0)":: "r" (image));
746 static inline void kvm_fx_restore(struct i387_fxsave_struct *image)
748 asm("fxrstor (%0)":: "r" (image));
751 static inline void kvm_fx_finit(void)
756 static inline u32 get_rdx_init_val(void)
758 return 0x600; /* P6 family */
761 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
763 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
766 #define TSS_IOPB_BASE_OFFSET 0x66
767 #define TSS_BASE_SIZE 0x68
768 #define TSS_IOPB_SIZE (65536 / 8)
769 #define TSS_REDIRECTION_SIZE (256 / 8)
770 #define RMODE_TSS_SIZE \
771 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
774 TASK_SWITCH_CALL = 0,
775 TASK_SWITCH_IRET = 1,
777 TASK_SWITCH_GATE = 3,
780 #define HF_GIF_MASK (1 << 0)
781 #define HF_HIF_MASK (1 << 1)
782 #define HF_VINTR_MASK (1 << 2)
783 #define HF_NMI_MASK (1 << 3)
784 #define HF_IRET_MASK (1 << 4)
787 * Hardware virtualization extension instructions may fault if a
788 * reboot turns off virtualization while processes are running.
789 * Trap the fault and ignore the instruction if that happens.
791 asmlinkage void kvm_handle_fault_on_reboot(void);
793 #define __kvm_handle_fault_on_reboot(insn) \
794 "666: " insn "\n\t" \
795 ".pushsection .fixup, \"ax\" \n" \
797 __ASM_SIZE(push) " $666b \n\t" \
798 "jmp kvm_handle_fault_on_reboot \n\t" \
800 ".pushsection __ex_table, \"a\" \n\t" \
801 _ASM_PTR " 666b, 667b \n\t" \
804 #define KVM_ARCH_WANT_MMU_NOTIFIER
805 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
806 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
807 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
809 #endif /* _ASM_X86_KVM_HOST_H */