File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
new file mode 100644
index 0000000..9d2abb2
--- /dev/null
+++ b/arch/x86/include/asm/kvm_host.h
@@ -0,0 +1,1261 @@
+/*
+ * Kernel-based Virtual Machine driver for Linux
+ *
+ * This header defines architecture specific interfaces, x86 version
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef _ASM_X86_KVM_HOST_H
+#define _ASM_X86_KVM_HOST_H
+
+#include <linux/types.h>
+#include <linux/mm.h>
+#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 <linux/irqbypass.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 255
+#define KVM_SOFT_MAX_VCPUS 160
+#define KVM_USER_MEM_SLOTS 509
+/* 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_PIO_PAGE_OFFSET 1
+#define KVM_COALESCED_MMIO_PAGE_OFFSET 2
+#define KVM_HALT_POLL_NS_DEFAULT 400000
+
+#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 CR3_PCID_INVD BIT_64(63)
+#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)
+
+#define UNMAPPED_GVA (~(gpa_t)0)
+
+/* KVM Hugepage definitions for x86 */
+#define KVM_NR_PAGE_SIZES 3
+#define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
+#define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
+#define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
+#define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
+#define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
+
+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 KVM_PERMILLE_MMU_PAGES 20
+#define KVM_MIN_ALLOC_MMU_PAGES 64
+#define KVM_MMU_HASH_SHIFT 10
+#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 80
+#define KVM_NR_FIXED_MTRR_REGION 88
+#define KVM_NR_VAR_MTRR 8
+
+#define ASYNC_PF_PER_VCPU 64
+
+enum kvm_reg {
+ VCPU_REGS_RAX = 0,
+ VCPU_REGS_RCX = 1,
+ VCPU_REGS_RDX = 2,
+ VCPU_REGS_RBX = 3,
+ VCPU_REGS_RSP = 4,
+ VCPU_REGS_RBP = 5,
+ VCPU_REGS_RSI = 6,
+ VCPU_REGS_RDI = 7,
+#ifdef CONFIG_X86_64
+ VCPU_REGS_R8 = 8,
+ VCPU_REGS_R9 = 9,
+ VCPU_REGS_R10 = 10,
+ VCPU_REGS_R11 = 11,
+ VCPU_REGS_R12 = 12,
+ VCPU_REGS_R13 = 13,
+ VCPU_REGS_R14 = 14,
+ VCPU_REGS_R15 = 15,
+#endif
+ VCPU_REGS_RIP,
+ NR_VCPU_REGS
+};
+
+enum kvm_reg_ex {
+ VCPU_EXREG_PDPTR = NR_VCPU_REGS,
+ VCPU_EXREG_CR3,
+ VCPU_EXREG_RFLAGS,
+ VCPU_EXREG_SEGMENTS,
+};
+
+enum {
+ VCPU_SREG_ES,
+ VCPU_SREG_CS,
+ VCPU_SREG_SS,
+ VCPU_SREG_DS,
+ VCPU_SREG_FS,
+ VCPU_SREG_GS,
+ VCPU_SREG_TR,
+ VCPU_SREG_LDTR,
+};
+
+#include <asm/kvm_emulate.h>
+
+#define KVM_NR_MEM_OBJS 40
+
+#define KVM_NR_DB_REGS 4
+
+#define DR6_BD (1 << 13)
+#define DR6_BS (1 << 14)
+#define DR6_RTM (1 << 16)
+#define DR6_FIXED_1 0xfffe0ff0
+#define DR6_INIT 0xffff0ff0
+#define DR6_VOLATILE 0x0001e00f
+
+#define DR7_BP_EN_MASK 0x000000ff
+#define DR7_GE (1 << 9)
+#define DR7_GD (1 << 13)
+#define DR7_FIXED_1 0x00000400
+#define DR7_VOLATILE 0xffff2bff
+
+#define PFERR_PRESENT_BIT 0
+#define PFERR_WRITE_BIT 1
+#define PFERR_USER_BIT 2
+#define PFERR_RSVD_BIT 3
+#define PFERR_FETCH_BIT 4
+
+#define PFERR_PRESENT_MASK (1U << PFERR_PRESENT_BIT)
+#define PFERR_WRITE_MASK (1U << PFERR_WRITE_BIT)
+#define PFERR_USER_MASK (1U << PFERR_USER_BIT)
+#define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT)
+#define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT)
+
+/* 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
+
+struct kvm_kernel_irq_routing_entry;
+
+/*
+ * We don't want allocation failures within the mmu code, so we preallocate
+ * enough memory for a single page fault in a cache.
+ */
+struct kvm_mmu_memory_cache {
+ int nobjs;
+ void *objects[KVM_NR_MEM_OBJS];
+};
+
+union kvm_mmu_page_role {
+ unsigned word;
+ struct {
+ unsigned level:4;
+ unsigned cr4_pae:1;
+ unsigned quadrant:2;
+ unsigned direct:1;
+ unsigned access:3;
+ unsigned invalid:1;
+ unsigned nxe:1;
+ unsigned cr0_wp:1;
+ unsigned smep_andnot_wp:1;
+ unsigned smap_andnot_wp:1;
+ unsigned :8;
+
+ /*
+ * This is left at the top of the word so that
+ * kvm_memslots_for_spte_role can extract it with a
+ * simple shift. While there is room, give it a whole
+ * byte so it is also faster to load it from memory.
+ */
+ unsigned smm:8;
+ };
+};
+
+struct kvm_mmu_page {
+ struct list_head link;
+ struct hlist_node hash_link;
+
+ /*
+ * The following two entries are used to key the shadow page in the
+ * hash table.
+ */
+ gfn_t gfn;
+ union kvm_mmu_page_role role;
+
+ u64 *spt;
+ /* hold the gfn of each spte inside spt */
+ gfn_t *gfns;
+ bool unsync;
+ int root_count; /* Currently serving as active root */
+ unsigned int unsync_children;
+ 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);
+
+#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 {
+ unsigned long count;
+ int in;
+ int port;
+ int size;
+};
+
+struct rsvd_bits_validate {
+ u64 rsvd_bits_mask[2][4];
+ u64 bad_mt_xwr;
+};
+
+/*
+ * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
+ * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
+ * mode.
+ */
+struct kvm_mmu {
+ void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
+ unsigned long (*get_cr3)(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,
+ struct x86_exception *exception);
+ gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
+ struct x86_exception *exception);
+ int (*sync_page)(struct kvm_vcpu *vcpu,
+ 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;
+
+ /*
+ * check zero bits on shadow page table entries, these
+ * bits include not only hardware reserved bits but also
+ * the bits spte never used.
+ */
+ struct rsvd_bits_validate shadow_zero_check;
+
+ struct rsvd_bits_validate guest_rsvd_check;
+
+ /*
+ * 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;
+};
+
+struct kvm_pmu_ops;
+
+enum {
+ KVM_DEBUGREG_BP_ENABLED = 1,
+ KVM_DEBUGREG_WONT_EXIT = 2,
+ KVM_DEBUGREG_RELOAD = 4,
+};
+
+struct kvm_mtrr_range {
+ u64 base;
+ u64 mask;
+ struct list_head node;
+};
+
+struct kvm_mtrr {
+ struct kvm_mtrr_range var_ranges[KVM_NR_VAR_MTRR];
+ mtrr_type fixed_ranges[KVM_NR_FIXED_MTRR_REGION];
+ u64 deftype;
+
+ struct list_head head;
+};
+
+/* Hyper-V per vcpu emulation context */
+struct kvm_vcpu_hv {
+ u64 hv_vapic;
+ s64 runtime_offset;
+};
+
+struct kvm_vcpu_arch {
+ /*
+ * rip and regs accesses must go through
+ * kvm_{register,rip}_{read,write} functions.
+ */
+ unsigned long regs[NR_VCPU_REGS];
+ u32 regs_avail;
+ u32 regs_dirty;
+
+ unsigned long cr0;
+ unsigned long cr0_guest_owned_bits;
+ unsigned long cr2;
+ unsigned long cr3;
+ unsigned long cr4;
+ unsigned long cr4_guest_owned_bits;
+ unsigned long cr8;
+ u32 hflags;
+ u64 efer;
+ u64 apic_base;
+ struct kvm_lapic *apic; /* kernel irqchip context */
+ u64 eoi_exit_bitmap[4];
+ unsigned long apic_attention;
+ int32_t apic_arb_prio;
+ int mp_state;
+ u64 ia32_misc_enable_msr;
+ u64 smbase;
+ bool tpr_access_reporting;
+ u64 ia32_xss;
+
+ /*
+ * Paging state of the vcpu
+ *
+ * If the vcpu runs in guest mode with two level paging this still saves
+ * the paging mode of the l1 guest. This context is always used to
+ * handle faults.
+ */
+ struct kvm_mmu mmu;
+
+ /*
+ * Paging state of an L2 guest (used for nested npt)
+ *
+ * This context will save all necessary information to walk page tables
+ * of the an L2 guest. This context is only initialized for page table
+ * walking and not for faulting since we never handle l2 page faults on
+ * the host.
+ */
+ struct kvm_mmu nested_mmu;
+
+ /*
+ * Pointer to the mmu context currently used for
+ * gva_to_gpa translations.
+ */
+ struct kvm_mmu *walk_mmu;
+
+ 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;
+
+ struct fpu guest_fpu;
+ bool eager_fpu;
+ u64 xcr0;
+ u64 guest_supported_xcr0;
+ u32 guest_xstate_size;
+
+ struct kvm_pio_request pio;
+ void *pio_data;
+
+ u8 event_exit_inst_len;
+
+ struct kvm_queued_exception {
+ bool pending;
+ bool has_error_code;
+ bool reinject;
+ u8 nr;
+ u32 error_code;
+ } exception;
+
+ struct kvm_queued_interrupt {
+ bool pending;
+ bool soft;
+ u8 nr;
+ } interrupt;
+
+ int halt_request; /* real mode on Intel only */
+
+ int cpuid_nent;
+ struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
+
+ int maxphyaddr;
+
+ /* 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;
+ 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_host_tsc;
+ u64 tsc_offset_adjustment;
+ u64 this_tsc_nsec;
+ u64 this_tsc_write;
+ u64 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;
+ u64 tsc_scaling_ratio;
+
+ 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 */
+ bool smi_pending; /* SMI queued after currently running handler */
+
+ struct kvm_mtrr mtrr_state;
+ u64 pat;
+
+ 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;
+ u64 mmio_gen;
+
+ struct kvm_pmu pmu;
+
+ /* used for guest single stepping over the given code position */
+ unsigned long singlestep_rip;
+
+ struct kvm_vcpu_hv hyperv;
+
+ 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;
+
+ int pending_ioapic_eoi;
+ int pending_external_vector;
+};
+
+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];
+};
+
+/*
+ * We use as the mode the number of bits allocated in the LDR for the
+ * logical processor ID. It happens that these are all powers of two.
+ * This makes it is very easy to detect cases where the APICs are
+ * configured for multiple modes; in that case, we cannot use the map and
+ * hence cannot use kvm_irq_delivery_to_apic_fast either.
+ */
+#define KVM_APIC_MODE_XAPIC_CLUSTER 4
+#define KVM_APIC_MODE_XAPIC_FLAT 8
+#define KVM_APIC_MODE_X2APIC 16
+
+struct kvm_apic_map {
+ struct rcu_head rcu;
+ u8 mode;
+ 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];
+};
+
+/* Hyper-V emulation context */
+struct kvm_hv {
+ u64 hv_guest_os_id;
+ u64 hv_hypercall;
+ u64 hv_tsc_page;
+
+ /* Hyper-v based guest crash (NT kernel bugcheck) parameters */
+ u64 hv_crash_param[HV_X64_MSR_CRASH_PARAMS];
+ u64 hv_crash_ctl;
+};
+
+struct kvm_arch {
+ unsigned int n_used_mmu_pages;
+ unsigned int n_requested_mmu_pages;
+ unsigned int n_max_mmu_pages;
+ 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;
+ bool iommu_noncoherent;
+#define __KVM_HAVE_ARCH_NONCOHERENT_DMA
+ atomic_t noncoherent_dma_count;
+#define __KVM_HAVE_ARCH_ASSIGNED_DEVICE
+ atomic_t assigned_device_count;
+ struct kvm_pic *vpic;
+ struct kvm_ioapic *vioapic;
+ struct kvm_pit *vpit;
+ atomic_t vapics_in_nmi_mode;
+ struct mutex apic_map_lock;
+ struct kvm_apic_map *apic_map;
+
+ unsigned int tss_addr;
+ bool apic_access_page_done;
+
+ gpa_t wall_clock;
+
+ bool ept_identity_pagetable_done;
+ gpa_t ept_identity_map_addr;
+
+ unsigned long irq_sources_bitmap;
+ s64 kvmclock_offset;
+ raw_spinlock_t tsc_write_lock;
+ u64 last_tsc_nsec;
+ u64 last_tsc_write;
+ u32 last_tsc_khz;
+ u64 cur_tsc_nsec;
+ u64 cur_tsc_write;
+ u64 cur_tsc_offset;
+ u64 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;
+
+ /* reads protected by irq_srcu, writes by irq_lock */
+ struct hlist_head mask_notifier_list;
+
+ struct kvm_hv hyperv;
+
+ #ifdef CONFIG_KVM_MMU_AUDIT
+ int audit_point;
+ #endif
+
+ bool boot_vcpu_runs_old_kvmclock;
+ u32 bsp_vcpu_id;
+
+ u64 disabled_quirks;
+
+ bool irqchip_split;
+ u8 nr_reserved_ioapic_pins;
+};
+
+struct kvm_vm_stat {
+ u32 mmu_shadow_zapped;
+ u32 mmu_pte_write;
+ u32 mmu_pte_updated;
+ u32 mmu_pde_zapped;
+ u32 mmu_flooded;
+ u32 mmu_recycled;
+ u32 mmu_cache_miss;
+ u32 mmu_unsync;
+ u32 remote_tlb_flush;
+ u32 lpages;
+};
+
+struct kvm_vcpu_stat {
+ u32 pf_fixed;
+ u32 pf_guest;
+ u32 tlb_flush;
+ u32 invlpg;
+
+ u32 exits;
+ u32 io_exits;
+ u32 mmio_exits;
+ u32 signal_exits;
+ u32 irq_window_exits;
+ u32 nmi_window_exits;
+ u32 halt_exits;
+ u32 halt_successful_poll;
+ u32 halt_attempted_poll;
+ u32 halt_wakeup;
+ u32 request_irq_exits;
+ u32 irq_exits;
+ u32 host_state_reload;
+ u32 efer_reload;
+ u32 fpu_reload;
+ u32 insn_emulation;
+ u32 insn_emulation_fail;
+ u32 hypercalls;
+ u32 irq_injections;
+ u32 nmi_injections;
+};
+
+struct x86_instruction_info;
+
+struct msr_data {
+ bool host_initiated;
+ u32 index;
+ u64 data;
+};
+
+struct kvm_lapic_irq {
+ u32 vector;
+ u16 delivery_mode;
+ u16 dest_mode;
+ bool level;
+ u16 trig_mode;
+ u32 shorthand;
+ u32 dest_id;
+ bool msi_redir_hint;
+};
+
+struct kvm_x86_ops {
+ int (*cpu_has_kvm_support)(void); /* __init */
+ int (*disabled_by_bios)(void); /* __init */
+ int (*hardware_enable)(void);
+ void (*hardware_disable)(void);
+ void (*check_processor_compatibility)(void *rtn);
+ int (*hardware_setup)(void); /* __init */
+ void (*hardware_unsetup)(void); /* __exit */
+ bool (*cpu_has_accelerated_tpr)(void);
+ bool (*cpu_has_high_real_mode_segbase)(void);
+ void (*cpuid_update)(struct kvm_vcpu *vcpu);
+
+ /* Create, but do not attach this VCPU */
+ struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
+ void (*vcpu_free)(struct kvm_vcpu *vcpu);
+ void (*vcpu_reset)(struct kvm_vcpu *vcpu, bool init_event);
+
+ 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 (*update_bp_intercept)(struct kvm_vcpu *vcpu);
+ int (*get_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
+ 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);
+ int (*get_cpl)(struct kvm_vcpu *vcpu);
+ void (*set_segment)(struct kvm_vcpu *vcpu,
+ 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);
+ 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);
+ void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
+ void (*fpu_activate)(struct kvm_vcpu *vcpu);
+ void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
+
+ void (*tlb_flush)(struct kvm_vcpu *vcpu);
+
+ void (*run)(struct kvm_vcpu *vcpu);
+ int (*handle_exit)(struct kvm_vcpu *vcpu);
+ void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
+ void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
+ u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu);
+ void (*patch_hypercall)(struct kvm_vcpu *vcpu,
+ unsigned char *hypercall_addr);
+ void (*set_irq)(struct kvm_vcpu *vcpu);
+ void (*set_nmi)(struct kvm_vcpu *vcpu);
+ void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
+ bool has_error_code, u32 error_code,
+ bool reinject);
+ void (*cancel_injection)(struct kvm_vcpu *vcpu);
+ int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
+ int (*nmi_allowed)(struct kvm_vcpu *vcpu);
+ bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
+ void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
+ 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 (*cpu_uses_apicv)(struct kvm_vcpu *vcpu);
+ 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);
+ void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set);
+ void (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu, hpa_t hpa);
+ 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);
+ bool (*invpcid_supported)(void);
+ void (*adjust_tsc_offset_guest)(struct kvm_vcpu *vcpu, s64 adjustment);
+
+ void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
+
+ void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
+
+ bool (*has_wbinvd_exit)(void);
+
+ u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu);
+ void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
+
+ 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);
+ bool (*xsaves_supported)(void);
+
+ int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr);
+
+ void (*sched_in)(struct kvm_vcpu *kvm, int cpu);
+
+ /*
+ * Arch-specific dirty logging hooks. These hooks are only supposed to
+ * be valid if the specific arch has hardware-accelerated dirty logging
+ * mechanism. Currently only for PML on VMX.
+ *
+ * - slot_enable_log_dirty:
+ * called when enabling log dirty mode for the slot.
+ * - slot_disable_log_dirty:
+ * called when disabling log dirty mode for the slot.
+ * also called when slot is created with log dirty disabled.
+ * - flush_log_dirty:
+ * called before reporting dirty_bitmap to userspace.
+ * - enable_log_dirty_pt_masked:
+ * called when reenabling log dirty for the GFNs in the mask after
+ * corresponding bits are cleared in slot->dirty_bitmap.
+ */
+ void (*slot_enable_log_dirty)(struct kvm *kvm,
+ struct kvm_memory_slot *slot);
+ void (*slot_disable_log_dirty)(struct kvm *kvm,
+ struct kvm_memory_slot *slot);
+ void (*flush_log_dirty)(struct kvm *kvm);
+ void (*enable_log_dirty_pt_masked)(struct kvm *kvm,
+ struct kvm_memory_slot *slot,
+ gfn_t offset, unsigned long mask);
+ /* pmu operations of sub-arch */
+ const struct kvm_pmu_ops *pmu_ops;
+
+ /*
+ * Architecture specific hooks for vCPU blocking due to
+ * HLT instruction.
+ * Returns for .pre_block():
+ * - 0 means continue to block the vCPU.
+ * - 1 means we cannot block the vCPU since some event
+ * happens during this period, such as, 'ON' bit in
+ * posted-interrupts descriptor is set.
+ */
+ int (*pre_block)(struct kvm_vcpu *vcpu);
+ void (*post_block)(struct kvm_vcpu *vcpu);
+ int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq,
+ uint32_t guest_irq, bool set);
+};
+
+struct kvm_arch_async_pf {
+ u32 token;
+ gfn_t gfn;
+ unsigned long cr3;
+ bool direct_map;
+};
+
+extern struct kvm_x86_ops *kvm_x86_ops;
+
+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);
+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);
+
+void kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
+void kvm_mmu_slot_remove_write_access(struct kvm *kvm,
+ struct kvm_memory_slot *memslot);
+void kvm_mmu_zap_collapsible_sptes(struct kvm *kvm,
+ const struct kvm_memory_slot *memslot);
+void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm,
+ struct kvm_memory_slot *memslot);
+void kvm_mmu_slot_largepage_remove_write_access(struct kvm *kvm,
+ struct kvm_memory_slot *memslot);
+void kvm_mmu_slot_set_dirty(struct kvm *kvm,
+ struct kvm_memory_slot *memslot);
+void kvm_mmu_clear_dirty_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, struct kvm_memslots *slots);
+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);
+
+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);
+
+struct kvm_irq_mask_notifier {
+ void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
+ int irq;
+ struct hlist_node link;
+};
+
+void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
+ struct kvm_irq_mask_notifier *kimn);
+void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
+ struct kvm_irq_mask_notifier *kimn);
+void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
+ bool mask);
+
+extern bool tdp_enabled;
+
+u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
+
+/* control of guest tsc rate supported? */
+extern bool kvm_has_tsc_control;
+/* maximum supported tsc_khz for guests */
+extern u32 kvm_max_guest_tsc_khz;
+/* number of bits of the fractional part of the TSC scaling ratio */
+extern u8 kvm_tsc_scaling_ratio_frac_bits;
+/* maximum allowed value of TSC scaling ratio */
+extern u64 kvm_max_tsc_scaling_ratio;
+
+enum emulation_result {
+ 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)
+#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, struct msr_data *msr);
+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 kvm_vcpu_halt(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, u8 vector);
+
+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);
+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);
+void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
+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, struct msr_data *msr);
+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, 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);
+bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
+bool kvm_require_dr(struct kvm_vcpu *vcpu, int dr);
+
+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);
+
+void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
+ 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 translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
+ struct x86_exception *exception);
+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_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);
+
+static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
+ struct x86_exception *exception)
+{
+ return gpa;
+}
+
+static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
+{
+ struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
+
+ return (struct kvm_mmu_page *)page_private(page);
+}
+
+static inline u16 kvm_read_ldt(void)
+{
+ u16 ldt;
+ asm("sldt %0" : "=g"(ldt));
+ return ldt;
+}
+
+static inline void kvm_load_ldt(u16 sel)
+{
+ asm("lldt %0" : : "rm"(sel));
+}
+
+#ifdef CONFIG_X86_64
+static inline unsigned long read_msr(unsigned long msr)
+{
+ u64 value;
+
+ rdmsrl(msr, value);
+ return value;
+}
+#endif
+
+static inline u32 get_rdx_init_val(void)
+{
+ return 0x600; /* P6 family */
+}
+
+static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
+{
+ kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
+}
+
+static inline u64 get_canonical(u64 la)
+{
+ return ((int64_t)la << 16) >> 16;
+}
+
+static inline bool is_noncanonical_address(u64 la)
+{
+#ifdef CONFIG_X86_64
+ return get_canonical(la) != la;
+#else
+ return false;
+#endif
+}
+
+#define TSS_IOPB_BASE_OFFSET 0x66
+#define TSS_BASE_SIZE 0x68
+#define TSS_IOPB_SIZE (65536 / 8)
+#define TSS_REDIRECTION_SIZE (256 / 8)
+#define RMODE_TSS_SIZE \
+ (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
+
+enum {
+ TASK_SWITCH_CALL = 0,
+ TASK_SWITCH_IRET = 1,
+ TASK_SWITCH_JMP = 2,
+ TASK_SWITCH_GATE = 3,
+};
+
+#define HF_GIF_MASK (1 << 0)
+#define HF_HIF_MASK (1 << 1)
+#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 */
+#define HF_SMM_MASK (1 << 6)
+#define HF_SMM_INSIDE_NMI_MASK (1 << 7)
+
+#define __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
+#define KVM_ADDRESS_SPACE_NUM 2
+
+#define kvm_arch_vcpu_memslots_id(vcpu) ((vcpu)->arch.hflags & HF_SMM_MASK ? 1 : 0)
+#define kvm_memslots_for_spte_role(kvm, role) __kvm_memslots(kvm, (role).smm)
+
+/*
+ * 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_spurious_fault(void);
+
+#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" \
+ "call kvm_spurious_fault \n\t" \
+ ".popsection \n\t" \
+ _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 start, unsigned long end);
+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 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, bool init_event);
+void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu *vcpu);
+void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm,
+ unsigned long address);
+
+void kvm_define_shared_msr(unsigned index, u32 msr);
+int kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
+
+u64 kvm_scale_tsc(struct kvm_vcpu *vcpu, u64 tsc);
+u64 kvm_read_l1_tsc(struct kvm_vcpu *vcpu, u64 host_tsc);
+
+unsigned long kvm_get_linear_rip(struct kvm_vcpu *vcpu);
+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);
+
+int __x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size);
+int x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size);
+bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu);
+bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu);
+
+bool kvm_intr_is_single_vcpu(struct kvm *kvm, struct kvm_lapic_irq *irq,
+ struct kvm_vcpu **dest_vcpu);
+
+void kvm_set_msi_irq(struct kvm_kernel_irq_routing_entry *e,
+ struct kvm_lapic_irq *irq);
+
+static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
+static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
+
+#endif /* _ASM_X86_KVM_HOST_H */