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>
18 #include <linux/cpumask.h>
19 #include <linux/irq_work.h>
21 #include <linux/kvm.h>
22 #include <linux/kvm_para.h>
23 #include <linux/kvm_types.h>
24 #include <linux/perf_event.h>
26 #include <asm/pvclock-abi.h>
29 #include <asm/msr-index.h>
32 #define KVM_MAX_VCPUS 254
33 #define KVM_SOFT_MAX_VCPUS 160
34 #define KVM_MEMORY_SLOTS 32
35 /* memory slots that does not exposed to userspace */
36 #define KVM_PRIVATE_MEM_SLOTS 4
37 #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
39 #define KVM_MMIO_SIZE 16
41 #define KVM_PIO_PAGE_OFFSET 1
42 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
44 #define CR0_RESERVED_BITS \
45 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
46 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
47 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
49 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
50 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
51 #define CR3_PCID_ENABLED_RESERVED_BITS 0xFFFFFF0000000000ULL
52 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
53 0xFFFFFF0000000000ULL)
54 #define CR4_RESERVED_BITS \
55 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
56 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
57 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
58 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_RDWRGSFS \
59 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
61 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
65 #define INVALID_PAGE (~(hpa_t)0)
66 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
68 #define UNMAPPED_GVA (~(gpa_t)0)
70 /* KVM Hugepage definitions for x86 */
71 #define KVM_NR_PAGE_SIZES 3
72 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
73 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
74 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
75 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
76 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
78 #define SELECTOR_TI_MASK (1 << 2)
79 #define SELECTOR_RPL_MASK 0x03
83 #define KVM_PERMILLE_MMU_PAGES 20
84 #define KVM_MIN_ALLOC_MMU_PAGES 64
85 #define KVM_MMU_HASH_SHIFT 10
86 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
87 #define KVM_MIN_FREE_MMU_PAGES 5
88 #define KVM_REFILL_PAGES 25
89 #define KVM_MAX_CPUID_ENTRIES 80
90 #define KVM_NR_FIXED_MTRR_REGION 88
91 #define KVM_NR_VAR_MTRR 8
93 #define ASYNC_PF_PER_VCPU 64
95 extern raw_spinlock_t kvm_lock;
96 extern struct list_head vm_list;
126 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
144 #include <asm/kvm_emulate.h>
146 #define KVM_NR_MEM_OBJS 40
148 #define KVM_NR_DB_REGS 4
150 #define DR6_BD (1 << 13)
151 #define DR6_BS (1 << 14)
152 #define DR6_FIXED_1 0xffff0ff0
153 #define DR6_VOLATILE 0x0000e00f
155 #define DR7_BP_EN_MASK 0x000000ff
156 #define DR7_GE (1 << 9)
157 #define DR7_GD (1 << 13)
158 #define DR7_FIXED_1 0x00000400
159 #define DR7_VOLATILE 0xffff23ff
161 /* apic attention bits */
162 #define KVM_APIC_CHECK_VAPIC 0
164 * The following bit is set with PV-EOI, unset on EOI.
165 * We detect PV-EOI changes by guest by comparing
166 * this bit with PV-EOI in guest memory.
167 * See the implementation in apic_update_pv_eoi.
169 #define KVM_APIC_PV_EOI_PENDING 1
172 * We don't want allocation failures within the mmu code, so we preallocate
173 * enough memory for a single page fault in a cache.
175 struct kvm_mmu_memory_cache {
177 void *objects[KVM_NR_MEM_OBJS];
181 * kvm_mmu_page_role, below, is defined as:
183 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
184 * bits 4:7 - page table level for this shadow (1-4)
185 * bits 8:9 - page table quadrant for 2-level guests
186 * bit 16 - direct mapping of virtual to physical mapping at gfn
187 * used for real mode and two-dimensional paging
188 * bits 17:19 - common access permissions for all ptes in this shadow page
190 union kvm_mmu_page_role {
196 unsigned pad_for_nice_hex_output:6;
202 unsigned smep_andnot_wp:1;
206 struct kvm_mmu_page {
207 struct list_head link;
208 struct hlist_node hash_link;
211 * The following two entries are used to key the shadow page in the
215 union kvm_mmu_page_role role;
218 /* hold the gfn of each spte inside spt */
221 * One bit set per slot which has memory
222 * in this shadow page.
224 DECLARE_BITMAP(slot_bitmap, KVM_MEM_SLOTS_NUM);
226 int root_count; /* Currently serving as active root */
227 unsigned int unsync_children;
228 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
229 DECLARE_BITMAP(unsync_child_bitmap, 512);
232 int clear_spte_count;
235 int write_flooding_count;
238 struct kvm_pio_request {
246 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
247 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
251 void (*new_cr3)(struct kvm_vcpu *vcpu);
252 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
253 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
254 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
255 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
257 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
258 struct x86_exception *fault);
259 void (*free)(struct kvm_vcpu *vcpu);
260 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
261 struct x86_exception *exception);
262 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
263 int (*sync_page)(struct kvm_vcpu *vcpu,
264 struct kvm_mmu_page *sp);
265 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
266 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
267 u64 *spte, const void *pte);
270 int shadow_root_level;
271 union kvm_mmu_page_role base_role;
276 u64 rsvd_bits_mask[2][4];
280 u64 pdptrs[4]; /* pae */
293 struct perf_event *perf_event;
294 struct kvm_vcpu *vcpu;
298 unsigned nr_arch_gp_counters;
299 unsigned nr_arch_fixed_counters;
300 unsigned available_event_types;
305 u64 counter_bitmask[2];
306 u64 global_ctrl_mask;
308 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
309 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
310 struct irq_work irq_work;
314 struct kvm_vcpu_arch {
316 * rip and regs accesses must go through
317 * kvm_{register,rip}_{read,write} functions.
319 unsigned long regs[NR_VCPU_REGS];
324 unsigned long cr0_guest_owned_bits;
328 unsigned long cr4_guest_owned_bits;
333 struct kvm_lapic *apic; /* kernel irqchip context */
334 unsigned long apic_attention;
335 int32_t apic_arb_prio;
338 u64 ia32_misc_enable_msr;
339 bool tpr_access_reporting;
342 * Paging state of the vcpu
344 * If the vcpu runs in guest mode with two level paging this still saves
345 * the paging mode of the l1 guest. This context is always used to
351 * Paging state of an L2 guest (used for nested npt)
353 * This context will save all necessary information to walk page tables
354 * of the an L2 guest. This context is only initialized for page table
355 * walking and not for faulting since we never handle l2 page faults on
358 struct kvm_mmu nested_mmu;
361 * Pointer to the mmu context currently used for
362 * gva_to_gpa translations.
364 struct kvm_mmu *walk_mmu;
366 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
367 struct kvm_mmu_memory_cache mmu_page_cache;
368 struct kvm_mmu_memory_cache mmu_page_header_cache;
370 struct fpu guest_fpu;
373 struct kvm_pio_request pio;
376 u8 event_exit_inst_len;
378 struct kvm_queued_exception {
386 struct kvm_queued_interrupt {
392 int halt_request; /* real mode on Intel only */
395 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
396 /* emulate context */
398 struct x86_emulate_ctxt emulate_ctxt;
399 bool emulate_regs_need_sync_to_vcpu;
400 bool emulate_regs_need_sync_from_vcpu;
403 struct pvclock_vcpu_time_info hv_clock;
404 unsigned int hw_tsc_khz;
405 unsigned int time_offset;
406 struct page *time_page;
412 struct gfn_to_hva_cache stime;
413 struct kvm_steal_time steal;
419 u64 tsc_offset_adjustment;
422 u8 this_tsc_generation;
424 bool tsc_always_catchup;
425 s8 virtual_tsc_shift;
426 u32 virtual_tsc_mult;
429 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
430 unsigned nmi_pending; /* NMI queued after currently running handler */
431 bool nmi_injected; /* Trying to inject an NMI this entry */
433 struct mtrr_state_type mtrr_state;
437 unsigned long db[KVM_NR_DB_REGS];
440 unsigned long eff_db[KVM_NR_DB_REGS];
447 /* Cache MMIO info */
454 /* used for guest single stepping over the given code position */
455 unsigned long singlestep_rip;
457 /* fields used by HYPER-V emulation */
460 cpumask_var_t wbinvd_dirty_mask;
462 unsigned long last_retry_eip;
463 unsigned long last_retry_addr;
467 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
468 struct gfn_to_hva_cache data;
474 /* OSVW MSRs (AMD only) */
482 struct gfn_to_hva_cache data;
486 struct kvm_lpage_info {
487 unsigned long rmap_pde;
491 struct kvm_arch_memory_slot {
492 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
496 unsigned int n_used_mmu_pages;
497 unsigned int n_requested_mmu_pages;
498 unsigned int n_max_mmu_pages;
499 unsigned int indirect_shadow_pages;
500 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
502 * Hash table of struct kvm_mmu_page.
504 struct list_head active_mmu_pages;
505 struct list_head assigned_dev_head;
506 struct iommu_domain *iommu_domain;
508 struct kvm_pic *vpic;
509 struct kvm_ioapic *vioapic;
510 struct kvm_pit *vpit;
511 int vapics_in_nmi_mode;
513 unsigned int tss_addr;
514 struct page *apic_access_page;
518 struct page *ept_identity_pagetable;
519 bool ept_identity_pagetable_done;
520 gpa_t ept_identity_map_addr;
522 unsigned long irq_sources_bitmap;
524 raw_spinlock_t tsc_write_lock;
531 u8 cur_tsc_generation;
533 struct kvm_xen_hvm_config xen_hvm_config;
535 /* fields used by HYPER-V emulation */
539 #ifdef CONFIG_KVM_MMU_AUDIT
545 u32 mmu_shadow_zapped;
553 u32 remote_tlb_flush;
557 struct kvm_vcpu_stat {
567 u32 irq_window_exits;
568 u32 nmi_window_exits;
571 u32 request_irq_exits;
573 u32 host_state_reload;
577 u32 insn_emulation_fail;
583 struct x86_instruction_info;
586 int (*cpu_has_kvm_support)(void); /* __init */
587 int (*disabled_by_bios)(void); /* __init */
588 int (*hardware_enable)(void *dummy);
589 void (*hardware_disable)(void *dummy);
590 void (*check_processor_compatibility)(void *rtn);
591 int (*hardware_setup)(void); /* __init */
592 void (*hardware_unsetup)(void); /* __exit */
593 bool (*cpu_has_accelerated_tpr)(void);
594 void (*cpuid_update)(struct kvm_vcpu *vcpu);
596 /* Create, but do not attach this VCPU */
597 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
598 void (*vcpu_free)(struct kvm_vcpu *vcpu);
599 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
601 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
602 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
603 void (*vcpu_put)(struct kvm_vcpu *vcpu);
605 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
606 struct kvm_guest_debug *dbg);
607 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
608 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
609 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
610 void (*get_segment)(struct kvm_vcpu *vcpu,
611 struct kvm_segment *var, int seg);
612 int (*get_cpl)(struct kvm_vcpu *vcpu);
613 void (*set_segment)(struct kvm_vcpu *vcpu,
614 struct kvm_segment *var, int seg);
615 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
616 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
617 void (*decache_cr3)(struct kvm_vcpu *vcpu);
618 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
619 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
620 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
621 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
622 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
623 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
624 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
625 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
626 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
627 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
628 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
629 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
630 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
631 void (*fpu_activate)(struct kvm_vcpu *vcpu);
632 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
634 void (*tlb_flush)(struct kvm_vcpu *vcpu);
636 void (*run)(struct kvm_vcpu *vcpu);
637 int (*handle_exit)(struct kvm_vcpu *vcpu);
638 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
639 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
640 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
641 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
642 unsigned char *hypercall_addr);
643 void (*set_irq)(struct kvm_vcpu *vcpu);
644 void (*set_nmi)(struct kvm_vcpu *vcpu);
645 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
646 bool has_error_code, u32 error_code,
648 void (*cancel_injection)(struct kvm_vcpu *vcpu);
649 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
650 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
651 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
652 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
653 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
654 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
655 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
656 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
657 int (*get_tdp_level)(void);
658 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
659 int (*get_lpage_level)(void);
660 bool (*rdtscp_supported)(void);
661 bool (*invpcid_supported)(void);
662 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
664 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
666 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
668 bool (*has_wbinvd_exit)(void);
670 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
671 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
673 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
674 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu);
676 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
678 int (*check_intercept)(struct kvm_vcpu *vcpu,
679 struct x86_instruction_info *info,
680 enum x86_intercept_stage stage);
683 struct kvm_arch_async_pf {
690 extern struct kvm_x86_ops *kvm_x86_ops;
692 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
695 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
698 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
700 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
703 int kvm_mmu_module_init(void);
704 void kvm_mmu_module_exit(void);
706 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
707 int kvm_mmu_create(struct kvm_vcpu *vcpu);
708 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
709 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
710 u64 dirty_mask, u64 nx_mask, u64 x_mask);
712 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
713 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
714 void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
715 struct kvm_memory_slot *slot,
716 gfn_t gfn_offset, unsigned long mask);
717 void kvm_mmu_zap_all(struct kvm *kvm);
718 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
719 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
721 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
723 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
724 const void *val, int bytes);
725 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
727 extern bool tdp_enabled;
729 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
731 /* control of guest tsc rate supported? */
732 extern bool kvm_has_tsc_control;
733 /* minimum supported tsc_khz for guests */
734 extern u32 kvm_min_guest_tsc_khz;
735 /* maximum supported tsc_khz for guests */
736 extern u32 kvm_max_guest_tsc_khz;
738 enum emulation_result {
739 EMULATE_DONE, /* no further processing */
740 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
741 EMULATE_FAIL, /* can't emulate this instruction */
744 #define EMULTYPE_NO_DECODE (1 << 0)
745 #define EMULTYPE_TRAP_UD (1 << 1)
746 #define EMULTYPE_SKIP (1 << 2)
747 #define EMULTYPE_RETRY (1 << 3)
748 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
749 int emulation_type, void *insn, int insn_len);
751 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
754 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
757 void kvm_enable_efer_bits(u64);
758 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
759 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
761 struct x86_emulate_ctxt;
763 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
764 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
765 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
766 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
768 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
769 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
771 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
772 int reason, bool has_error_code, u32 error_code);
774 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
775 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
776 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
777 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
778 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
779 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
780 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
781 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
782 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
783 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
785 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
786 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
788 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
789 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
790 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
792 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
793 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
794 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
795 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
796 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
797 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
798 gfn_t gfn, void *data, int offset, int len,
800 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
801 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
803 static inline int __kvm_irq_line_state(unsigned long *irq_state,
804 int irq_source_id, int level)
806 /* Logical OR for level trig interrupt */
808 __set_bit(irq_source_id, irq_state);
810 __clear_bit(irq_source_id, irq_state);
812 return !!(*irq_state);
815 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
816 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
818 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
820 int fx_init(struct kvm_vcpu *vcpu);
822 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
823 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
824 const u8 *new, int bytes);
825 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
826 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
827 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
828 int kvm_mmu_load(struct kvm_vcpu *vcpu);
829 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
830 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
831 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
832 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
833 struct x86_exception *exception);
834 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
835 struct x86_exception *exception);
836 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
837 struct x86_exception *exception);
838 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
839 struct x86_exception *exception);
841 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
843 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
844 void *insn, int insn_len);
845 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
847 void kvm_enable_tdp(void);
848 void kvm_disable_tdp(void);
850 int complete_pio(struct kvm_vcpu *vcpu);
851 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
853 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
858 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
860 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
862 return (struct kvm_mmu_page *)page_private(page);
865 static inline u16 kvm_read_ldt(void)
868 asm("sldt %0" : "=g"(ldt));
872 static inline void kvm_load_ldt(u16 sel)
874 asm("lldt %0" : : "rm"(sel));
878 static inline unsigned long read_msr(unsigned long msr)
887 static inline u32 get_rdx_init_val(void)
889 return 0x600; /* P6 family */
892 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
894 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
897 #define TSS_IOPB_BASE_OFFSET 0x66
898 #define TSS_BASE_SIZE 0x68
899 #define TSS_IOPB_SIZE (65536 / 8)
900 #define TSS_REDIRECTION_SIZE (256 / 8)
901 #define RMODE_TSS_SIZE \
902 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
905 TASK_SWITCH_CALL = 0,
906 TASK_SWITCH_IRET = 1,
908 TASK_SWITCH_GATE = 3,
911 #define HF_GIF_MASK (1 << 0)
912 #define HF_HIF_MASK (1 << 1)
913 #define HF_VINTR_MASK (1 << 2)
914 #define HF_NMI_MASK (1 << 3)
915 #define HF_IRET_MASK (1 << 4)
916 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
919 * Hardware virtualization extension instructions may fault if a
920 * reboot turns off virtualization while processes are running.
921 * Trap the fault and ignore the instruction if that happens.
923 asmlinkage void kvm_spurious_fault(void);
924 extern bool kvm_rebooting;
926 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
927 "666: " insn "\n\t" \
929 ".pushsection .fixup, \"ax\" \n" \
931 cleanup_insn "\n\t" \
932 "cmpb $0, kvm_rebooting \n\t" \
934 __ASM_SIZE(push) " $666b \n\t" \
935 "call kvm_spurious_fault \n\t" \
937 _ASM_EXTABLE(666b, 667b)
939 #define __kvm_handle_fault_on_reboot(insn) \
940 ____kvm_handle_fault_on_reboot(insn, "")
942 #define KVM_ARCH_WANT_MMU_NOTIFIER
943 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
944 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
945 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
946 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
947 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
948 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
949 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
950 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
952 void kvm_define_shared_msr(unsigned index, u32 msr);
953 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
955 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
957 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
958 struct kvm_async_pf *work);
959 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
960 struct kvm_async_pf *work);
961 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
962 struct kvm_async_pf *work);
963 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
964 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
966 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
968 int kvm_is_in_guest(void);
970 void kvm_pmu_init(struct kvm_vcpu *vcpu);
971 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
972 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
973 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
974 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
975 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
976 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data);
977 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
978 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
979 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
981 #endif /* _ASM_X86_KVM_HOST_H */