diff options
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 575 |
1 files changed, 425 insertions, 150 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 9e6fe391094..49205d01b9a 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -16,28 +16,51 @@ #include <linux/mmu_notifier.h> #include <linux/tracepoint.h> #include <linux/cpumask.h> +#include <linux/irq_work.h> #include <linux/kvm.h> #include <linux/kvm_para.h> #include <linux/kvm_types.h> +#include <linux/perf_event.h> +#include <linux/pvclock_gtod.h> +#include <linux/clocksource.h> #include <asm/pvclock-abi.h> #include <asm/desc.h> #include <asm/mtrr.h> #include <asm/msr-index.h> +#include <asm/asm.h> -#define KVM_MAX_VCPUS 64 -#define KVM_MEMORY_SLOTS 32 -/* memory slots that does not exposed to userspace */ -#define KVM_PRIVATE_MEM_SLOTS 4 +#define KVM_MAX_VCPUS 255 +#define KVM_SOFT_MAX_VCPUS 160 +#define KVM_USER_MEM_SLOTS 125 +/* memory slots that are not exposed to userspace */ +#define KVM_PRIVATE_MEM_SLOTS 3 +#define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) + +#define KVM_MMIO_SIZE 16 #define KVM_PIO_PAGE_OFFSET 1 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2 -#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1) -#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD)) -#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \ - 0xFFFFFF0000000000ULL) +#define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS + +#define CR0_RESERVED_BITS \ + (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \ + | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \ + | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG)) + +#define CR3_L_MODE_RESERVED_BITS 0xFFFFFF0000000000ULL +#define CR4_RESERVED_BITS \ + (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\ + | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \ + | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \ + | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \ + | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE | X86_CR4_SMAP)) + +#define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR) + + #define INVALID_PAGE (~(hpa_t)0) #define VALID_PAGE(x) ((x) != INVALID_PAGE) @@ -52,21 +75,12 @@ #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1)) #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE) -#define DE_VECTOR 0 -#define DB_VECTOR 1 -#define BP_VECTOR 3 -#define OF_VECTOR 4 -#define BR_VECTOR 5 -#define UD_VECTOR 6 -#define NM_VECTOR 7 -#define DF_VECTOR 8 -#define TS_VECTOR 10 -#define NP_VECTOR 11 -#define SS_VECTOR 12 -#define GP_VECTOR 13 -#define PF_VECTOR 14 -#define MF_VECTOR 16 -#define MC_VECTOR 18 +static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) +{ + /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ + return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - + (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); +} #define SELECTOR_TI_MASK (1 << 2) #define SELECTOR_RPL_MASK 0x03 @@ -79,15 +93,15 @@ #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT) #define KVM_MIN_FREE_MMU_PAGES 5 #define KVM_REFILL_PAGES 25 -#define KVM_MAX_CPUID_ENTRIES 40 +#define KVM_MAX_CPUID_ENTRIES 80 #define KVM_NR_FIXED_MTRR_REGION 88 -#define KVM_NR_VAR_MTRR 8 +#define KVM_NR_VAR_MTRR 10 -extern spinlock_t kvm_lock; -extern struct list_head vm_list; +#define ASYNC_PF_PER_VCPU 64 struct kvm_vcpu; struct kvm; +struct kvm_async_pf; enum kvm_reg { VCPU_REGS_RAX = 0, @@ -114,6 +128,9 @@ enum kvm_reg { enum kvm_reg_ex { VCPU_EXREG_PDPTR = NR_VCPU_REGS, + VCPU_EXREG_CR3, + VCPU_EXREG_RFLAGS, + VCPU_EXREG_SEGMENTS, }; enum { @@ -144,6 +161,16 @@ enum { #define DR7_FIXED_1 0x00000400 #define DR7_VOLATILE 0xffff23ff +/* apic attention bits */ +#define KVM_APIC_CHECK_VAPIC 0 +/* + * The following bit is set with PV-EOI, unset on EOI. + * We detect PV-EOI changes by guest by comparing + * this bit with PV-EOI in guest memory. + * See the implementation in apic_update_pv_eoi. + */ +#define KVM_APIC_PV_EOI_PENDING 1 + /* * We don't want allocation failures within the mmu code, so we preallocate * enough memory for a single page fault in a cache. @@ -153,13 +180,6 @@ struct kvm_mmu_memory_cache { void *objects[KVM_NR_MEM_OBJS]; }; -#define NR_PTE_CHAIN_ENTRIES 5 - -struct kvm_pte_chain { - u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES]; - struct hlist_node link; -}; - /* * kvm_mmu_page_role, below, is defined as: * @@ -182,6 +202,7 @@ union kvm_mmu_page_role { unsigned invalid:1; unsigned nxe:1; unsigned cr0_wp:1; + unsigned smep_andnot_wp:1; }; }; @@ -199,27 +220,26 @@ struct kvm_mmu_page { u64 *spt; /* hold the gfn of each spte inside spt */ gfn_t *gfns; - /* - * One bit set per slot which has memory - * in this shadow page. - */ - DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS); - bool multimapped; /* More than one parent_pte? */ bool unsync; int root_count; /* Currently serving as active root */ unsigned int unsync_children; - union { - u64 *parent_pte; /* !multimapped */ - struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ - }; + unsigned long parent_ptes; /* Reverse mapping for parent_pte */ + + /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */ + unsigned long mmu_valid_gen; + DECLARE_BITMAP(unsync_child_bitmap, 512); -}; -struct kvm_pv_mmu_op_buffer { - void *ptr; - unsigned len; - unsigned processed; - char buf[512] __aligned(sizeof(long)); +#ifdef CONFIG_X86_32 + /* + * Used out of the mmu-lock to avoid reading spte values while an + * update is in progress; see the comments in __get_spte_lockless(). + */ + int clear_spte_count; +#endif + + /* Number of writes since the last time traversal visited this page. */ + int write_flooding_count; }; struct kvm_pio_request { @@ -235,35 +255,88 @@ struct kvm_pio_request { * mode. */ struct kvm_mmu { - void (*new_cr3)(struct kvm_vcpu *vcpu); void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root); unsigned long (*get_cr3)(struct kvm_vcpu *vcpu); - int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); - void (*inject_page_fault)(struct kvm_vcpu *vcpu); - void (*free)(struct kvm_vcpu *vcpu); + u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index); + int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err, + bool prefault); + void (*inject_page_fault)(struct kvm_vcpu *vcpu, + struct x86_exception *fault); gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access, - u32 *error); + struct x86_exception *exception); gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access); - void (*prefetch_page)(struct kvm_vcpu *vcpu, - struct kvm_mmu_page *page); int (*sync_page)(struct kvm_vcpu *vcpu, - struct kvm_mmu_page *sp, bool clear_unsync); + struct kvm_mmu_page *sp); void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva); + void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp, + u64 *spte, const void *pte); hpa_t root_hpa; int root_level; int shadow_root_level; union kvm_mmu_page_role base_role; bool direct_map; + /* + * Bitmap; bit set = permission fault + * Byte index: page fault error code [4:1] + * Bit index: pte permissions in ACC_* format + */ + u8 permissions[16]; + u64 *pae_root; u64 *lm_root; u64 rsvd_bits_mask[2][4]; + u64 bad_mt_xwr; + + /* + * Bitmap: bit set = last pte in walk + * index[0:1]: level (zero-based) + * index[2]: pte.ps + */ + u8 last_pte_bitmap; bool nx; u64 pdptrs[4]; /* pae */ }; +enum pmc_type { + KVM_PMC_GP = 0, + KVM_PMC_FIXED, +}; + +struct kvm_pmc { + enum pmc_type type; + u8 idx; + u64 counter; + u64 eventsel; + struct perf_event *perf_event; + struct kvm_vcpu *vcpu; +}; + +struct kvm_pmu { + unsigned nr_arch_gp_counters; + unsigned nr_arch_fixed_counters; + unsigned available_event_types; + u64 fixed_ctr_ctrl; + u64 global_ctrl; + u64 global_status; + u64 global_ovf_ctrl; + u64 counter_bitmask[2]; + u64 global_ctrl_mask; + u64 reserved_bits; + u8 version; + struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC]; + struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED]; + struct irq_work irq_work; + u64 reprogram_pmi; +}; + +enum { + KVM_DEBUGREG_BP_ENABLED = 1, + KVM_DEBUGREG_WONT_EXIT = 2, +}; + struct kvm_vcpu_arch { /* * rip and regs accesses must go through @@ -284,9 +357,9 @@ struct kvm_vcpu_arch { u64 efer; u64 apic_base; struct kvm_lapic *apic; /* kernel irqchip context */ + unsigned long apic_attention; int32_t apic_arb_prio; int mp_state; - int sipi_vector; u64 ia32_misc_enable_msr; bool tpr_access_reporting; @@ -315,40 +388,15 @@ struct kvm_vcpu_arch { */ struct kvm_mmu *walk_mmu; - /* - * This struct is filled with the necessary information to propagate a - * page fault into the guest - */ - struct { - u64 address; - unsigned error_code; - bool nested; - } fault; - - /* only needed in kvm_pv_mmu_op() path, but it's hot so - * put it here to avoid allocation */ - struct kvm_pv_mmu_op_buffer mmu_op_buffer; - - struct kvm_mmu_memory_cache mmu_pte_chain_cache; - struct kvm_mmu_memory_cache mmu_rmap_desc_cache; + struct kvm_mmu_memory_cache mmu_pte_list_desc_cache; struct kvm_mmu_memory_cache mmu_page_cache; struct kvm_mmu_memory_cache mmu_page_header_cache; - gfn_t last_pt_write_gfn; - int last_pt_write_count; - u64 *last_pte_updated; - gfn_t last_pte_gfn; - - struct { - gfn_t gfn; /* presumed gfn during guest pte update */ - pfn_t pfn; /* pfn corresponding to that gfn */ - unsigned long mmu_seq; - } update_pte; - struct fpu guest_fpu; u64 xcr0; + u64 guest_supported_xcr0; + u32 guest_xstate_size; - gva_t mmio_fault_cr2; struct kvm_pio_request pio; void *pio_data; @@ -375,36 +423,65 @@ struct kvm_vcpu_arch { /* emulate context */ struct x86_emulate_ctxt emulate_ctxt; + bool emulate_regs_need_sync_to_vcpu; + bool emulate_regs_need_sync_from_vcpu; + int (*complete_userspace_io)(struct kvm_vcpu *vcpu); gpa_t time; struct pvclock_vcpu_time_info hv_clock; unsigned int hw_tsc_khz; - unsigned int time_offset; - struct page *time_page; - u64 last_host_tsc; + struct gfn_to_hva_cache pv_time; + bool pv_time_enabled; + /* set guest stopped flag in pvclock flags field */ + bool pvclock_set_guest_stopped_request; + + struct { + u64 msr_val; + u64 last_steal; + u64 accum_steal; + struct gfn_to_hva_cache stime; + struct kvm_steal_time steal; + } st; + u64 last_guest_tsc; - u64 last_kernel_ns; - u64 last_tsc_nsec; - u64 last_tsc_write; + u64 last_host_tsc; + u64 tsc_offset_adjustment; + u64 this_tsc_nsec; + u64 this_tsc_write; + u8 this_tsc_generation; bool tsc_catchup; + bool tsc_always_catchup; + s8 virtual_tsc_shift; + u32 virtual_tsc_mult; + u32 virtual_tsc_khz; + s64 ia32_tsc_adjust_msr; - bool nmi_pending; - bool nmi_injected; + atomic_t nmi_queued; /* unprocessed asynchronous NMIs */ + unsigned nmi_pending; /* NMI queued after currently running handler */ + bool nmi_injected; /* Trying to inject an NMI this entry */ struct mtrr_state_type mtrr_state; - u32 pat; + u64 pat; - int switch_db_regs; + unsigned switch_db_regs; unsigned long db[KVM_NR_DB_REGS]; unsigned long dr6; unsigned long dr7; unsigned long eff_db[KVM_NR_DB_REGS]; + unsigned long guest_debug_dr7; u64 mcg_cap; u64 mcg_status; u64 mcg_ctl; u64 *mce_banks; + /* Cache MMIO info */ + u64 mmio_gva; + unsigned access; + gfn_t mmio_gfn; + + struct kvm_pmu pmu; + /* used for guest single stepping over the given code position */ unsigned long singlestep_rip; @@ -412,25 +489,89 @@ struct kvm_vcpu_arch { u64 hv_vapic; cpumask_var_t wbinvd_dirty_mask; + + unsigned long last_retry_eip; + unsigned long last_retry_addr; + + struct { + bool halted; + gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)]; + struct gfn_to_hva_cache data; + u64 msr_val; + u32 id; + bool send_user_only; + } apf; + + /* OSVW MSRs (AMD only) */ + struct { + u64 length; + u64 status; + } osvw; + + struct { + u64 msr_val; + struct gfn_to_hva_cache data; + } pv_eoi; + + /* + * Indicate whether the access faults on its page table in guest + * which is set when fix page fault and used to detect unhandeable + * instruction. + */ + bool write_fault_to_shadow_pgtable; + + /* set at EPT violation at this point */ + unsigned long exit_qualification; + + /* pv related host specific info */ + struct { + bool pv_unhalted; + } pv; +}; + +struct kvm_lpage_info { + int write_count; +}; + +struct kvm_arch_memory_slot { + unsigned long *rmap[KVM_NR_PAGE_SIZES]; + struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1]; +}; + +struct kvm_apic_map { + struct rcu_head rcu; + u8 ldr_bits; + /* fields bellow are used to decode ldr values in different modes */ + u32 cid_shift, cid_mask, lid_mask; + struct kvm_lapic *phys_map[256]; + /* first index is cluster id second is cpu id in a cluster */ + struct kvm_lapic *logical_map[16][16]; }; struct kvm_arch { unsigned int n_used_mmu_pages; unsigned int n_requested_mmu_pages; unsigned int n_max_mmu_pages; - atomic_t invlpg_counter; + unsigned int indirect_shadow_pages; + unsigned long mmu_valid_gen; struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; /* * Hash table of struct kvm_mmu_page. */ struct list_head active_mmu_pages; + struct list_head zapped_obsolete_pages; + struct list_head assigned_dev_head; struct iommu_domain *iommu_domain; - int iommu_flags; + bool iommu_noncoherent; +#define __KVM_HAVE_ARCH_NONCOHERENT_DMA + atomic_t noncoherent_dma_count; struct kvm_pic *vpic; struct kvm_ioapic *vioapic; struct kvm_pit *vpit; int vapics_in_nmi_mode; + struct mutex apic_map_lock; + struct kvm_apic_map *apic_map; unsigned int tss_addr; struct page *apic_access_page; @@ -443,19 +584,33 @@ struct kvm_arch { unsigned long irq_sources_bitmap; s64 kvmclock_offset; - spinlock_t tsc_write_lock; + raw_spinlock_t tsc_write_lock; u64 last_tsc_nsec; - u64 last_tsc_offset; u64 last_tsc_write; - u32 virtual_tsc_khz; - u32 virtual_tsc_mult; - s8 virtual_tsc_shift; + u32 last_tsc_khz; + u64 cur_tsc_nsec; + u64 cur_tsc_write; + u64 cur_tsc_offset; + u8 cur_tsc_generation; + int nr_vcpus_matched_tsc; + + spinlock_t pvclock_gtod_sync_lock; + bool use_master_clock; + u64 master_kernel_ns; + cycle_t master_cycle_now; + struct delayed_work kvmclock_update_work; + struct delayed_work kvmclock_sync_work; struct kvm_xen_hvm_config xen_hvm_config; /* fields used by HYPER-V emulation */ u64 hv_guest_os_id; u64 hv_hypercall; + u64 hv_tsc_page; + + #ifdef CONFIG_KVM_MMU_AUDIT + int audit_point; + #endif }; struct kvm_vm_stat { @@ -497,6 +652,14 @@ struct kvm_vcpu_stat { u32 nmi_injections; }; +struct x86_instruction_info; + +struct msr_data { + bool host_initiated; + u32 index; + u64 data; +}; + struct kvm_x86_ops { int (*cpu_has_kvm_support)(void); /* __init */ int (*disabled_by_bios)(void); /* __init */ @@ -511,16 +674,15 @@ struct kvm_x86_ops { /* Create, but do not attach this VCPU */ struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id); void (*vcpu_free)(struct kvm_vcpu *vcpu); - int (*vcpu_reset)(struct kvm_vcpu *vcpu); + void (*vcpu_reset)(struct kvm_vcpu *vcpu); void (*prepare_guest_switch)(struct kvm_vcpu *vcpu); void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); void (*vcpu_put)(struct kvm_vcpu *vcpu); - void (*set_guest_debug)(struct kvm_vcpu *vcpu, - struct kvm_guest_debug *dbg); + void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu); int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata); - int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); + int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr); u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); void (*get_segment)(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); @@ -529,15 +691,19 @@ struct kvm_x86_ops { struct kvm_segment *var, int seg); void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu); + void (*decache_cr3)(struct kvm_vcpu *vcpu); void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); - void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); + int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); + u64 (*get_dr6)(struct kvm_vcpu *vcpu); + void (*set_dr6)(struct kvm_vcpu *vcpu, unsigned long value); + void (*sync_dirty_debug_regs)(struct kvm_vcpu *vcpu); void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value); void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg); unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); @@ -567,12 +733,20 @@ struct kvm_x86_ops { void (*enable_nmi_window)(struct kvm_vcpu *vcpu); void (*enable_irq_window)(struct kvm_vcpu *vcpu); void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr); + int (*vm_has_apicv)(struct kvm *kvm); + void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr); + void (*hwapic_isr_update)(struct kvm *kvm, int isr); + void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap); + void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set); + void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector); + void (*sync_pir_to_irr)(struct kvm_vcpu *vcpu); int (*set_tss_addr)(struct kvm *kvm, unsigned int addr); int (*get_tdp_level)(void); u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio); int (*get_lpage_level)(void); bool (*rdtscp_supported)(void); - void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment); + bool (*invpcid_supported)(void); + void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host); void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); @@ -580,27 +754,60 @@ struct kvm_x86_ops { bool (*has_wbinvd_exit)(void); + void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale); + u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu); void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset); - const struct trace_print_flags *exit_reasons_str; + u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc); + u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc); + + void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2); + + int (*check_intercept)(struct kvm_vcpu *vcpu, + struct x86_instruction_info *info, + enum x86_intercept_stage stage); + void (*handle_external_intr)(struct kvm_vcpu *vcpu); + bool (*mpx_supported)(void); + + int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr); +}; + +struct kvm_arch_async_pf { + u32 token; + gfn_t gfn; + unsigned long cr3; + bool direct_map; }; extern struct kvm_x86_ops *kvm_x86_ops; +static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu, + s64 adjustment) +{ + kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false); +} + +static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment) +{ + kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true); +} + int kvm_mmu_module_init(void); void kvm_mmu_module_exit(void); void kvm_mmu_destroy(struct kvm_vcpu *vcpu); int kvm_mmu_create(struct kvm_vcpu *vcpu); -int kvm_mmu_setup(struct kvm_vcpu *vcpu); -void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte); -void kvm_mmu_set_base_ptes(u64 base_pte); +void kvm_mmu_setup(struct kvm_vcpu *vcpu); void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask, u64 dirty_mask, u64 nx_mask, u64 x_mask); -int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); +void kvm_mmu_reset_context(struct kvm_vcpu *vcpu); void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot); +void kvm_mmu_write_protect_pt_masked(struct kvm *kvm, + struct kvm_memory_slot *slot, + gfn_t gfn_offset, unsigned long mask); void kvm_mmu_zap_all(struct kvm *kvm); +void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm); unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm); void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages); @@ -608,49 +815,62 @@ int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3); int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa, const void *val, int bytes); -int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes, - gpa_t addr, unsigned long *ret); u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn); extern bool tdp_enabled; +u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu); + +/* control of guest tsc rate supported? */ +extern bool kvm_has_tsc_control; +/* minimum supported tsc_khz for guests */ +extern u32 kvm_min_guest_tsc_khz; +/* maximum supported tsc_khz for guests */ +extern u32 kvm_max_guest_tsc_khz; + enum emulation_result { - EMULATE_DONE, /* no further processing */ - EMULATE_DO_MMIO, /* kvm_run filled with mmio request */ + EMULATE_DONE, /* no further processing */ + EMULATE_USER_EXIT, /* kvm_run ready for userspace exit */ EMULATE_FAIL, /* can't emulate this instruction */ }; #define EMULTYPE_NO_DECODE (1 << 0) #define EMULTYPE_TRAP_UD (1 << 1) #define EMULTYPE_SKIP (1 << 2) -int emulate_instruction(struct kvm_vcpu *vcpu, - unsigned long cr2, u16 error_code, int emulation_type); -void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); -void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); +#define EMULTYPE_RETRY (1 << 3) +#define EMULTYPE_NO_REEXECUTE (1 << 4) +int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2, + int emulation_type, void *insn, int insn_len); + +static inline int emulate_instruction(struct kvm_vcpu *vcpu, + int emulation_type) +{ + return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0); +} void kvm_enable_efer_bits(u64); +bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer); int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data); -int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); +int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr); struct x86_emulate_ctxt; int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port); void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); int kvm_emulate_halt(struct kvm_vcpu *vcpu); -int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address); -int emulate_clts(struct kvm_vcpu *vcpu); int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu); void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg); +void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, unsigned int vector); -int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason, - bool has_error_code, u32 error_code); +int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index, + int reason, bool has_error_code, u32 error_code); int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3); int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); -void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8); +int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8); int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val); int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val); unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu); @@ -659,23 +879,37 @@ void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr); int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); -int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); +int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr); unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu); void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags); +bool kvm_rdpmc(struct kvm_vcpu *vcpu); void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr); void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr); void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); -void kvm_inject_page_fault(struct kvm_vcpu *vcpu); +void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault); int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, gfn_t gfn, void *data, int offset, int len, u32 access); -void kvm_propagate_fault(struct kvm_vcpu *vcpu); +void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault); bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl); -int kvm_pic_set_irq(void *opaque, int irq, int level); +static inline int __kvm_irq_line_state(unsigned long *irq_state, + int irq_source_id, int level) +{ + /* Logical OR for level trig interrupt */ + if (level) + __set_bit(irq_source_id, irq_state); + else + __clear_bit(irq_source_id, irq_state); + + return !!(*irq_state); +} + +int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level); +void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id); void kvm_inject_nmi(struct kvm_vcpu *vcpu); @@ -683,30 +917,37 @@ int fx_init(struct kvm_vcpu *vcpu); void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu); void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, - const u8 *new, int bytes, - bool guest_initiated); + const u8 *new, int bytes); +int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn); int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); int kvm_mmu_load(struct kvm_vcpu *vcpu); void kvm_mmu_unload(struct kvm_vcpu *vcpu); void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu); -gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, u32 *error); -gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva, u32 *error); -gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, u32 *error); -gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, u32 *error); +gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access); +gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, + struct x86_exception *exception); +gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva, + struct x86_exception *exception); +gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, + struct x86_exception *exception); +gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, + struct x86_exception *exception); int kvm_emulate_hypercall(struct kvm_vcpu *vcpu); -int kvm_fix_hypercall(struct kvm_vcpu *vcpu); - -int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code); +int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code, + void *insn, int insn_len); void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva); +void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu); void kvm_enable_tdp(void); void kvm_disable_tdp(void); -int complete_pio(struct kvm_vcpu *vcpu); -bool kvm_check_iopl(struct kvm_vcpu *vcpu); +static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access) +{ + return gpa; +} static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) { @@ -766,37 +1007,71 @@ enum { #define HF_VINTR_MASK (1 << 2) #define HF_NMI_MASK (1 << 3) #define HF_IRET_MASK (1 << 4) +#define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */ /* * Hardware virtualization extension instructions may fault if a * reboot turns off virtualization while processes are running. * Trap the fault and ignore the instruction if that happens. */ -asmlinkage void kvm_handle_fault_on_reboot(void); +asmlinkage void kvm_spurious_fault(void); -#define __kvm_handle_fault_on_reboot(insn) \ +#define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \ "666: " insn "\n\t" \ + "668: \n\t" \ ".pushsection .fixup, \"ax\" \n" \ "667: \n\t" \ + cleanup_insn "\n\t" \ + "cmpb $0, kvm_rebooting \n\t" \ + "jne 668b \n\t" \ __ASM_SIZE(push) " $666b \n\t" \ - "jmp kvm_handle_fault_on_reboot \n\t" \ + "call kvm_spurious_fault \n\t" \ ".popsection \n\t" \ - ".pushsection __ex_table, \"a\" \n\t" \ - _ASM_PTR " 666b, 667b \n\t" \ - ".popsection" + _ASM_EXTABLE(666b, 667b) + +#define __kvm_handle_fault_on_reboot(insn) \ + ____kvm_handle_fault_on_reboot(insn, "") #define KVM_ARCH_WANT_MMU_NOTIFIER int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); +int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end); int kvm_age_hva(struct kvm *kvm, unsigned long hva); +int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); int cpuid_maxphyaddr(struct kvm_vcpu *vcpu); +int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v); int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu); int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu); int kvm_cpu_get_interrupt(struct kvm_vcpu *v); +void kvm_vcpu_reset(struct kvm_vcpu *vcpu); void kvm_define_shared_msr(unsigned index, u32 msr); void kvm_set_shared_msr(unsigned index, u64 val, u64 mask); bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip); +void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, + struct kvm_async_pf *work); +void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, + struct kvm_async_pf *work); +void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, + struct kvm_async_pf *work); +bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu); +extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn); + +void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err); + +int kvm_is_in_guest(void); + +void kvm_pmu_init(struct kvm_vcpu *vcpu); +void kvm_pmu_destroy(struct kvm_vcpu *vcpu); +void kvm_pmu_reset(struct kvm_vcpu *vcpu); +void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu); +bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr); +int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data); +int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info); +int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data); +void kvm_handle_pmu_event(struct kvm_vcpu *vcpu); +void kvm_deliver_pmi(struct kvm_vcpu *vcpu); + #endif /* _ASM_X86_KVM_HOST_H */ |