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 \
41 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
42 | X86_CR0_NW | X86_CR0_CD)
43 #define KVM_VM_CR0_ALWAYS_ON \
44 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
46 #define KVM_GUEST_CR4_MASK \
47 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
48 #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
49 #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
51 #define INVALID_PAGE (~(hpa_t)0)
52 #define UNMAPPED_GVA (~(gpa_t)0)
54 /* shadow tables are PAE even on non-PAE hosts */
55 #define KVM_HPAGE_SHIFT 21
56 #define KVM_HPAGE_SIZE (1UL << KVM_HPAGE_SHIFT)
57 #define KVM_HPAGE_MASK (~(KVM_HPAGE_SIZE - 1))
59 #define KVM_PAGES_PER_HPAGE (KVM_HPAGE_SIZE / PAGE_SIZE)
77 #define SELECTOR_TI_MASK (1 << 2)
78 #define SELECTOR_RPL_MASK 0x03
82 #define KVM_ALIAS_SLOTS 4
84 #define KVM_PERMILLE_MMU_PAGES 20
85 #define KVM_MIN_ALLOC_MMU_PAGES 64
86 #define KVM_MMU_HASH_SHIFT 10
87 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
88 #define KVM_MIN_FREE_MMU_PAGES 5
89 #define KVM_REFILL_PAGES 25
90 #define KVM_MAX_CPUID_ENTRIES 40
91 #define KVM_NR_FIXED_MTRR_REGION 88
92 #define KVM_NR_VAR_MTRR 8
94 extern spinlock_t kvm_lock;
95 extern struct list_head vm_list;
124 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
138 #include <asm/kvm_x86_emulate.h>
140 #define KVM_NR_MEM_OBJS 40
142 #define KVM_NR_DB_REGS 4
144 #define DR6_BD (1 << 13)
145 #define DR6_BS (1 << 14)
146 #define DR6_FIXED_1 0xffff0ff0
147 #define DR6_VOLATILE 0x0000e00f
149 #define DR7_BP_EN_MASK 0x000000ff
150 #define DR7_GE (1 << 9)
151 #define DR7_GD (1 << 13)
152 #define DR7_FIXED_1 0x00000400
153 #define DR7_VOLATILE 0xffff23ff
156 * We don't want allocation failures within the mmu code, so we preallocate
157 * enough memory for a single page fault in a cache.
159 struct kvm_mmu_memory_cache {
161 void *objects[KVM_NR_MEM_OBJS];
164 #define NR_PTE_CHAIN_ENTRIES 5
166 struct kvm_pte_chain {
167 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
168 struct hlist_node link;
172 * kvm_mmu_page_role, below, is defined as:
174 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
175 * bits 4:7 - page table level for this shadow (1-4)
176 * bits 8:9 - page table quadrant for 2-level guests
177 * bit 16 - direct mapping of virtual to physical mapping at gfn
178 * used for real mode and two-dimensional paging
179 * bits 17:19 - common access permissions for all ptes in this shadow page
181 union kvm_mmu_page_role {
187 unsigned pad_for_nice_hex_output:6;
196 struct kvm_mmu_page {
197 struct list_head link;
198 struct hlist_node hash_link;
200 struct list_head oos_link;
203 * The following two entries are used to key the shadow page in the
207 union kvm_mmu_page_role role;
210 /* hold the gfn of each spte inside spt */
213 * One bit set per slot which has memory
214 * in this shadow page.
216 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
217 int multimapped; /* More than one parent_pte? */
218 int root_count; /* Currently serving as active root */
220 unsigned int unsync_children;
222 u64 *parent_pte; /* !multimapped */
223 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
225 DECLARE_BITMAP(unsync_child_bitmap, 512);
228 struct kvm_pv_mmu_op_buffer {
232 char buf[512] __aligned(sizeof(long));
235 struct kvm_pio_request {
248 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
249 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
253 void (*new_cr3)(struct kvm_vcpu *vcpu);
254 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
255 void (*free)(struct kvm_vcpu *vcpu);
256 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
257 void (*prefetch_page)(struct kvm_vcpu *vcpu,
258 struct kvm_mmu_page *page);
259 int (*sync_page)(struct kvm_vcpu *vcpu,
260 struct kvm_mmu_page *sp);
261 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
264 int shadow_root_level;
265 union kvm_mmu_page_role base_role;
268 u64 rsvd_bits_mask[2][4];
271 struct kvm_vcpu_arch {
274 * rip and regs accesses must go through
275 * kvm_{register,rip}_{read,write} functions.
277 unsigned long regs[NR_VCPU_REGS];
287 u64 pdptrs[4]; /* pae */
290 struct kvm_lapic *apic; /* kernel irqchip context */
291 int32_t apic_arb_prio;
294 u64 ia32_misc_enable_msr;
295 bool tpr_access_reporting;
298 /* only needed in kvm_pv_mmu_op() path, but it's hot so
299 * put it here to avoid allocation */
300 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
302 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
303 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
304 struct kvm_mmu_memory_cache mmu_page_cache;
305 struct kvm_mmu_memory_cache mmu_page_header_cache;
307 gfn_t last_pt_write_gfn;
308 int last_pt_write_count;
309 u64 *last_pte_updated;
313 gfn_t gfn; /* presumed gfn during guest pte update */
314 pfn_t pfn; /* pfn corresponding to that gfn */
316 unsigned long mmu_seq;
319 struct i387_fxsave_struct host_fx_image;
320 struct i387_fxsave_struct guest_fx_image;
322 gva_t mmio_fault_cr2;
323 struct kvm_pio_request pio;
326 u8 event_exit_inst_len;
328 struct kvm_queued_exception {
335 struct kvm_queued_interrupt {
344 struct kvm_save_segment {
349 } tr, es, ds, fs, gs;
351 int halt_request; /* real mode on Intel only */
354 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
355 /* emulate context */
357 struct x86_emulate_ctxt emulate_ctxt;
360 struct pvclock_vcpu_time_info hv_clock;
361 unsigned int hv_clock_tsc_khz;
362 unsigned int time_offset;
363 struct page *time_page;
365 bool singlestep; /* guest is single stepped by KVM */
369 struct mtrr_state_type mtrr_state;
373 unsigned long host_db[KVM_NR_DB_REGS];
374 unsigned long host_dr6;
375 unsigned long host_dr7;
376 unsigned long db[KVM_NR_DB_REGS];
379 unsigned long eff_db[KVM_NR_DB_REGS];
387 struct kvm_mem_alias {
389 unsigned long npages;
395 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
397 unsigned int n_free_mmu_pages;
398 unsigned int n_requested_mmu_pages;
399 unsigned int n_alloc_mmu_pages;
400 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
402 * Hash table of struct kvm_mmu_page.
404 struct list_head active_mmu_pages;
405 struct list_head assigned_dev_head;
406 struct iommu_domain *iommu_domain;
408 struct kvm_pic *vpic;
409 struct kvm_ioapic *vioapic;
410 struct kvm_pit *vpit;
411 struct hlist_head irq_ack_notifier_list;
412 int vapics_in_nmi_mode;
414 unsigned int tss_addr;
415 struct page *apic_access_page;
419 struct page *ept_identity_pagetable;
420 bool ept_identity_pagetable_done;
422 unsigned long irq_sources_bitmap;
423 unsigned long irq_states[KVM_IOAPIC_NUM_PINS];
428 u32 mmu_shadow_zapped;
436 u32 remote_tlb_flush;
440 struct kvm_vcpu_stat {
450 u32 irq_window_exits;
451 u32 nmi_window_exits;
454 u32 request_irq_exits;
456 u32 host_state_reload;
460 u32 insn_emulation_fail;
466 struct descriptor_table {
469 } __attribute__((packed));
472 int (*cpu_has_kvm_support)(void); /* __init */
473 int (*disabled_by_bios)(void); /* __init */
474 void (*hardware_enable)(void *dummy); /* __init */
475 void (*hardware_disable)(void *dummy);
476 void (*check_processor_compatibility)(void *rtn);
477 int (*hardware_setup)(void); /* __init */
478 void (*hardware_unsetup)(void); /* __exit */
479 bool (*cpu_has_accelerated_tpr)(void);
481 /* Create, but do not attach this VCPU */
482 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
483 void (*vcpu_free)(struct kvm_vcpu *vcpu);
484 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
486 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
487 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
488 void (*vcpu_put)(struct kvm_vcpu *vcpu);
490 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
491 struct kvm_guest_debug *dbg);
492 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
493 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
494 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
495 void (*get_segment)(struct kvm_vcpu *vcpu,
496 struct kvm_segment *var, int seg);
497 int (*get_cpl)(struct kvm_vcpu *vcpu);
498 void (*set_segment)(struct kvm_vcpu *vcpu,
499 struct kvm_segment *var, int seg);
500 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
501 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
502 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
503 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
504 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
505 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
506 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
507 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
508 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
509 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
510 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
511 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
513 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
514 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
515 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
517 void (*tlb_flush)(struct kvm_vcpu *vcpu);
519 void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
520 int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
521 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
522 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
523 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
524 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
525 unsigned char *hypercall_addr);
526 void (*set_irq)(struct kvm_vcpu *vcpu);
527 void (*set_nmi)(struct kvm_vcpu *vcpu);
528 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
529 bool has_error_code, u32 error_code);
530 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
531 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
532 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
533 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
534 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
535 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
536 int (*get_tdp_level)(void);
537 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
540 extern struct kvm_x86_ops *kvm_x86_ops;
542 int kvm_mmu_module_init(void);
543 void kvm_mmu_module_exit(void);
545 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
546 int kvm_mmu_create(struct kvm_vcpu *vcpu);
547 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
548 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
549 void kvm_mmu_set_base_ptes(u64 base_pte);
550 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
551 u64 dirty_mask, u64 nx_mask, u64 x_mask);
553 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
554 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
555 void kvm_mmu_zap_all(struct kvm *kvm);
556 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
557 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
559 int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
561 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
562 const void *val, int bytes);
563 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
564 gpa_t addr, unsigned long *ret);
565 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
567 extern bool tdp_enabled;
569 enum emulation_result {
570 EMULATE_DONE, /* no further processing */
571 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
572 EMULATE_FAIL, /* can't emulate this instruction */
575 #define EMULTYPE_NO_DECODE (1 << 0)
576 #define EMULTYPE_TRAP_UD (1 << 1)
577 #define EMULTYPE_SKIP (1 << 2)
578 int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
579 unsigned long cr2, u16 error_code, int emulation_type);
580 void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
581 void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
582 void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
583 void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
584 unsigned long *rflags);
586 unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
587 void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
588 unsigned long *rflags);
589 void kvm_enable_efer_bits(u64);
590 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
591 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
593 struct x86_emulate_ctxt;
595 int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
596 int size, unsigned port);
597 int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
598 int size, unsigned long count, int down,
599 gva_t address, int rep, unsigned port);
600 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
601 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
602 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
603 int emulate_clts(struct kvm_vcpu *vcpu);
604 int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
605 unsigned long *dest);
606 int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
607 unsigned long value);
609 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
610 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector,
611 int type_bits, int seg);
613 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason);
615 void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
616 void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
617 void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
618 void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
619 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
620 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
621 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
623 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
624 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
626 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
627 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
628 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
631 int kvm_pic_set_irq(void *opaque, int irq, int level);
633 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
635 void fx_init(struct kvm_vcpu *vcpu);
637 int emulator_write_emulated(unsigned long addr,
640 struct kvm_vcpu *vcpu);
642 unsigned long segment_base(u16 selector);
644 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
645 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
646 const u8 *new, int bytes,
647 bool guest_initiated);
648 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
649 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
650 int kvm_mmu_load(struct kvm_vcpu *vcpu);
651 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
652 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
654 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
656 int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
658 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
659 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
661 void kvm_enable_tdp(void);
662 void kvm_disable_tdp(void);
664 int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
665 int complete_pio(struct kvm_vcpu *vcpu);
667 struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn);
669 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
671 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
673 return (struct kvm_mmu_page *)page_private(page);
676 static inline u16 kvm_read_fs(void)
679 asm("mov %%fs, %0" : "=g"(seg));
683 static inline u16 kvm_read_gs(void)
686 asm("mov %%gs, %0" : "=g"(seg));
690 static inline u16 kvm_read_ldt(void)
693 asm("sldt %0" : "=g"(ldt));
697 static inline void kvm_load_fs(u16 sel)
699 asm("mov %0, %%fs" : : "rm"(sel));
702 static inline void kvm_load_gs(u16 sel)
704 asm("mov %0, %%gs" : : "rm"(sel));
707 static inline void kvm_load_ldt(u16 sel)
709 asm("lldt %0" : : "rm"(sel));
712 static inline void kvm_get_idt(struct descriptor_table *table)
714 asm("sidt %0" : "=m"(*table));
717 static inline void kvm_get_gdt(struct descriptor_table *table)
719 asm("sgdt %0" : "=m"(*table));
722 static inline unsigned long kvm_read_tr_base(void)
725 asm("str %0" : "=g"(tr));
726 return segment_base(tr);
730 static inline unsigned long read_msr(unsigned long msr)
739 static inline void kvm_fx_save(struct i387_fxsave_struct *image)
741 asm("fxsave (%0)":: "r" (image));
744 static inline void kvm_fx_restore(struct i387_fxsave_struct *image)
746 asm("fxrstor (%0)":: "r" (image));
749 static inline void kvm_fx_finit(void)
754 static inline u32 get_rdx_init_val(void)
756 return 0x600; /* P6 family */
759 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
761 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
764 #define TSS_IOPB_BASE_OFFSET 0x66
765 #define TSS_BASE_SIZE 0x68
766 #define TSS_IOPB_SIZE (65536 / 8)
767 #define TSS_REDIRECTION_SIZE (256 / 8)
768 #define RMODE_TSS_SIZE \
769 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
772 TASK_SWITCH_CALL = 0,
773 TASK_SWITCH_IRET = 1,
775 TASK_SWITCH_GATE = 3,
778 #define HF_GIF_MASK (1 << 0)
779 #define HF_HIF_MASK (1 << 1)
780 #define HF_VINTR_MASK (1 << 2)
781 #define HF_NMI_MASK (1 << 3)
782 #define HF_IRET_MASK (1 << 4)
785 * Hardware virtualization extension instructions may fault if a
786 * reboot turns off virtualization while processes are running.
787 * Trap the fault and ignore the instruction if that happens.
789 asmlinkage void kvm_handle_fault_on_reboot(void);
791 #define __kvm_handle_fault_on_reboot(insn) \
792 "666: " insn "\n\t" \
793 ".pushsection .fixup, \"ax\" \n" \
795 __ASM_SIZE(push) " $666b \n\t" \
796 "jmp kvm_handle_fault_on_reboot \n\t" \
798 ".pushsection __ex_table, \"a\" \n\t" \
799 _ASM_PTR " 666b, 667b \n\t" \
802 #define KVM_ARCH_WANT_MMU_NOTIFIER
803 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
804 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
805 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
807 #endif /* _ASM_X86_KVM_HOST_H */