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 64
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 INVALID_PAGE (~(hpa_t)0)
42 #define UNMAPPED_GVA (~(gpa_t)0)
44 /* KVM Hugepage definitions for x86 */
45 #define KVM_NR_PAGE_SIZES 3
46 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + (((x) - 1) * 9))
47 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
48 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
49 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
67 #define SELECTOR_TI_MASK (1 << 2)
68 #define SELECTOR_RPL_MASK 0x03
72 #define KVM_ALIAS_SLOTS 4
74 #define KVM_PERMILLE_MMU_PAGES 20
75 #define KVM_MIN_ALLOC_MMU_PAGES 64
76 #define KVM_MMU_HASH_SHIFT 10
77 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
78 #define KVM_MIN_FREE_MMU_PAGES 5
79 #define KVM_REFILL_PAGES 25
80 #define KVM_MAX_CPUID_ENTRIES 40
81 #define KVM_NR_FIXED_MTRR_REGION 88
82 #define KVM_NR_VAR_MTRR 8
84 extern spinlock_t kvm_lock;
85 extern struct list_head vm_list;
114 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
128 #include <asm/kvm_emulate.h>
130 #define KVM_NR_MEM_OBJS 40
132 #define KVM_NR_DB_REGS 4
134 #define DR6_BD (1 << 13)
135 #define DR6_BS (1 << 14)
136 #define DR6_FIXED_1 0xffff0ff0
137 #define DR6_VOLATILE 0x0000e00f
139 #define DR7_BP_EN_MASK 0x000000ff
140 #define DR7_GE (1 << 9)
141 #define DR7_GD (1 << 13)
142 #define DR7_FIXED_1 0x00000400
143 #define DR7_VOLATILE 0xffff23ff
146 * We don't want allocation failures within the mmu code, so we preallocate
147 * enough memory for a single page fault in a cache.
149 struct kvm_mmu_memory_cache {
151 void *objects[KVM_NR_MEM_OBJS];
154 #define NR_PTE_CHAIN_ENTRIES 5
156 struct kvm_pte_chain {
157 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
158 struct hlist_node link;
162 * kvm_mmu_page_role, below, is defined as:
164 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
165 * bits 4:7 - page table level for this shadow (1-4)
166 * bits 8:9 - page table quadrant for 2-level guests
167 * bit 16 - direct mapping of virtual to physical mapping at gfn
168 * used for real mode and two-dimensional paging
169 * bits 17:19 - common access permissions for all ptes in this shadow page
171 union kvm_mmu_page_role {
177 unsigned pad_for_nice_hex_output:6;
185 struct kvm_mmu_page {
186 struct list_head link;
187 struct hlist_node hash_link;
190 * The following two entries are used to key the shadow page in the
194 union kvm_mmu_page_role role;
197 /* hold the gfn of each spte inside spt */
200 * One bit set per slot which has memory
201 * in this shadow page.
203 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
204 bool multimapped; /* More than one parent_pte? */
206 int root_count; /* Currently serving as active root */
207 unsigned int unsync_children;
209 u64 *parent_pte; /* !multimapped */
210 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
212 DECLARE_BITMAP(unsync_child_bitmap, 512);
215 struct kvm_pv_mmu_op_buffer {
219 char buf[512] __aligned(sizeof(long));
222 struct kvm_pio_request {
230 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
231 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
235 void (*new_cr3)(struct kvm_vcpu *vcpu);
236 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
237 void (*free)(struct kvm_vcpu *vcpu);
238 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
240 void (*prefetch_page)(struct kvm_vcpu *vcpu,
241 struct kvm_mmu_page *page);
242 int (*sync_page)(struct kvm_vcpu *vcpu,
243 struct kvm_mmu_page *sp);
244 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
247 int shadow_root_level;
248 union kvm_mmu_page_role base_role;
251 u64 rsvd_bits_mask[2][4];
254 struct kvm_vcpu_arch {
257 * rip and regs accesses must go through
258 * kvm_{register,rip}_{read,write} functions.
260 unsigned long regs[NR_VCPU_REGS];
265 unsigned long cr0_guest_owned_bits;
269 unsigned long cr4_guest_owned_bits;
272 u64 pdptrs[4]; /* pae */
275 struct kvm_lapic *apic; /* kernel irqchip context */
276 int32_t apic_arb_prio;
279 u64 ia32_misc_enable_msr;
280 bool tpr_access_reporting;
283 /* only needed in kvm_pv_mmu_op() path, but it's hot so
284 * put it here to avoid allocation */
285 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
287 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
288 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
289 struct kvm_mmu_memory_cache mmu_page_cache;
290 struct kvm_mmu_memory_cache mmu_page_header_cache;
292 gfn_t last_pt_write_gfn;
293 int last_pt_write_count;
294 u64 *last_pte_updated;
298 gfn_t gfn; /* presumed gfn during guest pte update */
299 pfn_t pfn; /* pfn corresponding to that gfn */
300 unsigned long mmu_seq;
303 struct i387_fxsave_struct host_fx_image;
304 struct i387_fxsave_struct guest_fx_image;
306 gva_t mmio_fault_cr2;
307 struct kvm_pio_request pio;
310 u8 event_exit_inst_len;
312 struct kvm_queued_exception {
319 struct kvm_queued_interrupt {
325 int halt_request; /* real mode on Intel only */
328 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
329 /* emulate context */
331 struct x86_emulate_ctxt emulate_ctxt;
334 struct pvclock_vcpu_time_info hv_clock;
335 unsigned int hv_clock_tsc_khz;
336 unsigned int time_offset;
337 struct page *time_page;
342 struct mtrr_state_type mtrr_state;
346 unsigned long db[KVM_NR_DB_REGS];
349 unsigned long eff_db[KVM_NR_DB_REGS];
356 /* used for guest single stepping over the given code position */
357 unsigned long singlestep_rip;
359 /* fields used by HYPER-V emulation */
363 struct kvm_mem_alias {
365 unsigned long npages;
367 #define KVM_ALIAS_INVALID 1UL
371 #define KVM_ARCH_HAS_UNALIAS_INSTANTIATION
373 struct kvm_mem_aliases {
374 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
379 struct kvm_mem_aliases *aliases;
381 unsigned int n_free_mmu_pages;
382 unsigned int n_requested_mmu_pages;
383 unsigned int n_alloc_mmu_pages;
384 atomic_t invlpg_counter;
385 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
387 * Hash table of struct kvm_mmu_page.
389 struct list_head active_mmu_pages;
390 struct list_head assigned_dev_head;
391 struct iommu_domain *iommu_domain;
393 struct kvm_pic *vpic;
394 struct kvm_ioapic *vioapic;
395 struct kvm_pit *vpit;
396 int vapics_in_nmi_mode;
398 unsigned int tss_addr;
399 struct page *apic_access_page;
403 struct page *ept_identity_pagetable;
404 bool ept_identity_pagetable_done;
405 gpa_t ept_identity_map_addr;
407 unsigned long irq_sources_bitmap;
411 struct kvm_xen_hvm_config xen_hvm_config;
413 /* fields used by HYPER-V emulation */
419 u32 mmu_shadow_zapped;
427 u32 remote_tlb_flush;
431 struct kvm_vcpu_stat {
441 u32 irq_window_exits;
442 u32 nmi_window_exits;
445 u32 request_irq_exits;
447 u32 host_state_reload;
451 u32 insn_emulation_fail;
458 int (*cpu_has_kvm_support)(void); /* __init */
459 int (*disabled_by_bios)(void); /* __init */
460 int (*hardware_enable)(void *dummy);
461 void (*hardware_disable)(void *dummy);
462 void (*check_processor_compatibility)(void *rtn);
463 int (*hardware_setup)(void); /* __init */
464 void (*hardware_unsetup)(void); /* __exit */
465 bool (*cpu_has_accelerated_tpr)(void);
466 void (*cpuid_update)(struct kvm_vcpu *vcpu);
468 /* Create, but do not attach this VCPU */
469 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
470 void (*vcpu_free)(struct kvm_vcpu *vcpu);
471 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
473 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
474 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
475 void (*vcpu_put)(struct kvm_vcpu *vcpu);
477 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
478 struct kvm_guest_debug *dbg);
479 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
480 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
481 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
482 void (*get_segment)(struct kvm_vcpu *vcpu,
483 struct kvm_segment *var, int seg);
484 int (*get_cpl)(struct kvm_vcpu *vcpu);
485 void (*set_segment)(struct kvm_vcpu *vcpu,
486 struct kvm_segment *var, int seg);
487 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
488 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
489 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
490 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
491 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
492 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
493 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
494 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
495 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
496 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
497 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
498 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
499 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
500 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
501 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
502 void (*fpu_activate)(struct kvm_vcpu *vcpu);
503 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
505 void (*tlb_flush)(struct kvm_vcpu *vcpu);
507 void (*run)(struct kvm_vcpu *vcpu);
508 int (*handle_exit)(struct kvm_vcpu *vcpu);
509 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
510 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
511 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
512 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
513 unsigned char *hypercall_addr);
514 void (*set_irq)(struct kvm_vcpu *vcpu);
515 void (*set_nmi)(struct kvm_vcpu *vcpu);
516 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
517 bool has_error_code, u32 error_code);
518 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
519 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
520 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
521 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
522 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
523 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
524 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
525 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
526 int (*get_tdp_level)(void);
527 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
528 int (*get_lpage_level)(void);
529 bool (*rdtscp_supported)(void);
531 const struct trace_print_flags *exit_reasons_str;
534 extern struct kvm_x86_ops *kvm_x86_ops;
536 int kvm_mmu_module_init(void);
537 void kvm_mmu_module_exit(void);
539 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
540 int kvm_mmu_create(struct kvm_vcpu *vcpu);
541 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
542 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
543 void kvm_mmu_set_base_ptes(u64 base_pte);
544 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
545 u64 dirty_mask, u64 nx_mask, u64 x_mask);
547 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
548 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
549 void kvm_mmu_zap_all(struct kvm *kvm);
550 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
551 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
553 int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
555 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
556 const void *val, int bytes);
557 int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
558 gpa_t addr, unsigned long *ret);
559 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
561 extern bool tdp_enabled;
563 enum emulation_result {
564 EMULATE_DONE, /* no further processing */
565 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
566 EMULATE_FAIL, /* can't emulate this instruction */
569 #define EMULTYPE_NO_DECODE (1 << 0)
570 #define EMULTYPE_TRAP_UD (1 << 1)
571 #define EMULTYPE_SKIP (1 << 2)
572 int emulate_instruction(struct kvm_vcpu *vcpu,
573 unsigned long cr2, u16 error_code, int emulation_type);
574 void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
575 void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
576 void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
578 void kvm_enable_efer_bits(u64);
579 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
580 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
582 struct x86_emulate_ctxt;
584 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
585 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
586 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
587 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
588 int emulate_clts(struct kvm_vcpu *vcpu);
589 int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
590 unsigned long *dest);
591 int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
592 unsigned long value);
594 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
595 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
597 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
598 bool has_error_code, u32 error_code);
600 void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
601 void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
602 void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
603 void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
604 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
605 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
606 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
607 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
608 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
610 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
611 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
613 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
614 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
616 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
617 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
618 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
620 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
622 int kvm_pic_set_irq(void *opaque, int irq, int level);
624 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
626 void fx_init(struct kvm_vcpu *vcpu);
628 int emulator_write_emulated(unsigned long addr,
631 struct kvm_vcpu *vcpu);
633 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
634 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
635 const u8 *new, int bytes,
636 bool guest_initiated);
637 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
638 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
639 int kvm_mmu_load(struct kvm_vcpu *vcpu);
640 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
641 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
642 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
643 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
644 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
645 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
647 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
649 int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
651 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
652 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
654 void kvm_enable_tdp(void);
655 void kvm_disable_tdp(void);
657 int complete_pio(struct kvm_vcpu *vcpu);
658 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
660 struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn);
662 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
664 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
666 return (struct kvm_mmu_page *)page_private(page);
669 static inline u16 kvm_read_fs(void)
672 asm("mov %%fs, %0" : "=g"(seg));
676 static inline u16 kvm_read_gs(void)
679 asm("mov %%gs, %0" : "=g"(seg));
683 static inline u16 kvm_read_ldt(void)
686 asm("sldt %0" : "=g"(ldt));
690 static inline void kvm_load_fs(u16 sel)
692 asm("mov %0, %%fs" : : "rm"(sel));
695 static inline void kvm_load_gs(u16 sel)
697 asm("mov %0, %%gs" : : "rm"(sel));
700 static inline void kvm_load_ldt(u16 sel)
702 asm("lldt %0" : : "rm"(sel));
706 static inline unsigned long read_msr(unsigned long msr)
715 static inline void kvm_fx_save(struct i387_fxsave_struct *image)
717 asm("fxsave (%0)":: "r" (image));
720 static inline void kvm_fx_restore(struct i387_fxsave_struct *image)
722 asm("fxrstor (%0)":: "r" (image));
725 static inline void kvm_fx_finit(void)
730 static inline u32 get_rdx_init_val(void)
732 return 0x600; /* P6 family */
735 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
737 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
740 #define TSS_IOPB_BASE_OFFSET 0x66
741 #define TSS_BASE_SIZE 0x68
742 #define TSS_IOPB_SIZE (65536 / 8)
743 #define TSS_REDIRECTION_SIZE (256 / 8)
744 #define RMODE_TSS_SIZE \
745 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
748 TASK_SWITCH_CALL = 0,
749 TASK_SWITCH_IRET = 1,
751 TASK_SWITCH_GATE = 3,
754 #define HF_GIF_MASK (1 << 0)
755 #define HF_HIF_MASK (1 << 1)
756 #define HF_VINTR_MASK (1 << 2)
757 #define HF_NMI_MASK (1 << 3)
758 #define HF_IRET_MASK (1 << 4)
761 * Hardware virtualization extension instructions may fault if a
762 * reboot turns off virtualization while processes are running.
763 * Trap the fault and ignore the instruction if that happens.
765 asmlinkage void kvm_handle_fault_on_reboot(void);
767 #define __kvm_handle_fault_on_reboot(insn) \
768 "666: " insn "\n\t" \
769 ".pushsection .fixup, \"ax\" \n" \
771 __ASM_SIZE(push) " $666b \n\t" \
772 "jmp kvm_handle_fault_on_reboot \n\t" \
774 ".pushsection __ex_table, \"a\" \n\t" \
775 _ASM_PTR " 666b, 667b \n\t" \
778 #define KVM_ARCH_WANT_MMU_NOTIFIER
779 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
780 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
781 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
782 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
783 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
784 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
785 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
787 void kvm_define_shared_msr(unsigned index, u32 msr);
788 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
790 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
792 #endif /* _ASM_X86_KVM_HOST_H */