cregit-Linux how code gets into the kernel

Release 4.14 arch/x86/include/asm/kvm_host.h

Directory: arch/x86/include/asm
/*
 * 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 <linux/hyperv.h>

#include <asm/apic.h>
#include <asm/pvclock-abi.h>
#include <asm/desc.h>
#include <asm/mtrr.h>
#include <asm/msr-index.h>
#include <asm/asm.h>
#include <asm/kvm_page_track.h>


#define KVM_MAX_VCPUS 288

#define KVM_SOFT_MAX_VCPUS 240

#define KVM_MAX_VCPU_ID 1023

#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_HALT_POLL_NS_DEFAULT 200000


#define KVM_IRQCHIP_NUM_PINS  KVM_IOAPIC_NUM_PINS

/* x86-specific vcpu->requests bit members */

#define KVM_REQ_MIGRATE_TIMER		KVM_ARCH_REQ(0)

#define KVM_REQ_REPORT_TPR_ACCESS	KVM_ARCH_REQ(1)

#define KVM_REQ_TRIPLE_FAULT		KVM_ARCH_REQ(2)

#define KVM_REQ_MMU_SYNC		KVM_ARCH_REQ(3)

#define KVM_REQ_CLOCK_UPDATE		KVM_ARCH_REQ(4)

#define KVM_REQ_EVENT			KVM_ARCH_REQ(6)

#define KVM_REQ_APF_HALT		KVM_ARCH_REQ(7)

#define KVM_REQ_STEAL_UPDATE		KVM_ARCH_REQ(8)

#define KVM_REQ_NMI			KVM_ARCH_REQ(9)

#define KVM_REQ_PMU			KVM_ARCH_REQ(10)

#define KVM_REQ_PMI			KVM_ARCH_REQ(11)

#define KVM_REQ_SMI			KVM_ARCH_REQ(12)

#define KVM_REQ_MASTERCLOCK_UPDATE	KVM_ARCH_REQ(13)

#define KVM_REQ_MCLOCK_INPROGRESS \
	KVM_ARCH_REQ_FLAGS(14, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)

#define KVM_REQ_SCAN_IOAPIC \
	KVM_ARCH_REQ_FLAGS(15, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)

#define KVM_REQ_GLOBAL_CLOCK_UPDATE	KVM_ARCH_REQ(16)

#define KVM_REQ_APIC_PAGE_RELOAD \
	KVM_ARCH_REQ_FLAGS(17, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)

#define KVM_REQ_HV_CRASH		KVM_ARCH_REQ(18)

#define KVM_REQ_IOAPIC_EOI_EXIT		KVM_ARCH_REQ(19)

#define KVM_REQ_HV_RESET		KVM_ARCH_REQ(20)

#define KVM_REQ_HV_EXIT			KVM_ARCH_REQ(21)

#define KVM_REQ_HV_STIMER		KVM_ARCH_REQ(22)


#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_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_LA57 | X86_CR4_VMXE \
                          | X86_CR4_SMAP | X86_CR4_PKE))


#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));
}


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#define KVM_PERMILLE_MMU_PAGES 20

#define KVM_MIN_ALLOC_MMU_PAGES 64

#define KVM_MMU_HASH_SHIFT 12

#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_PK_BIT 5

#define PFERR_GUEST_FINAL_BIT 32

#define PFERR_GUEST_PAGE_BIT 33


#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)

#define PFERR_PK_MASK (1U << PFERR_PK_BIT)

#define PFERR_GUEST_FINAL_MASK (1ULL << PFERR_GUEST_FINAL_BIT)

#define PFERR_GUEST_PAGE_MASK (1ULL << PFERR_GUEST_PAGE_BIT)


#define PFERR_NESTED_GUEST_PAGE (PFERR_GUEST_PAGE_MASK |        \
                                 PFERR_WRITE_MASK |             \
                                 PFERR_PRESENT_MASK)

/*
 * The mask used to denote special SPTEs, which can be either MMIO SPTEs or
 * Access Tracking SPTEs. We use bit 62 instead of bit 63 to avoid conflicting
 * with the SVE bit in EPT PTEs.
 */

#define SPTE_SPECIAL_MASK (1ULL << 62)

/* 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];
};

/*
 * the pages used as guest page table on soft mmu are tracked by
 * kvm_memory_slot.arch.gfn_track which is 16 bits, so the role bits used
 * by indirect shadow page can not be more than 15 bits.
 *
 * Currently, we used 14 bits that are @level, @cr4_pae, @quadrant, @access,
 * @nxe, @cr0_wp, @smep_andnot_wp and @smap_andnot_wp.
 */

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 ad_disabled:1;
		unsigned :7;

		/*
                 * 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_rmap_head {
	
unsigned long val;
};


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;
	
struct kvm_rmap_head parent_ptes; /* rmap pointers to parent sptes */

	/* 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.  */
	
atomic_t write_flooding_count;
};


struct kvm_pio_request {
	
unsigned long count;
	
int in;
	
int port;
	
int size;
};


#define PT64_ROOT_MAX_LEVEL 5


struct rsvd_bits_validate {
	
u64 rsvd_bits_mask[2][PT64_ROOT_MAX_LEVEL];
	
u64 bad_mt_xwr;
};

/*
 * x86 supports 4 paging modes (5-level 64-bit, 4-level 64-bit, 3-level 32-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;
	
union kvm_mmu_page_role base_role;
	
u8 root_level;
	
u8 shadow_root_level;
	
u8 ept_ad;
	
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];

	/*
        * The pkru_mask indicates if protection key checks are needed.  It
        * consists of 16 domains indexed by page fault error code bits [4:1],
        * with PFEC.RSVD replaced by ACC_USER_MASK from the page tables.
        * Each domain has 2 bits which are ANDed with AD and WD from PKRU.
        */
	
u32 pkru_mask;

	
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;

	/* Can have large pages at levels 2..last_nonleaf_level-1. */
	
u8 last_nonleaf_level;

	
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 SynIC timer */

struct kvm_vcpu_hv_stimer {
	
struct hrtimer timer;
	
int index;
	
u64 config;
	
u64 count;
	
u64 exp_time;
	
struct hv_message msg;
	
bool msg_pending;
};

/* Hyper-V synthetic interrupt controller (SynIC)*/

struct kvm_vcpu_hv_synic {
	
u64 version;
	
u64 control;
	
u64 msg_page;
	
u64 evt_page;
	
atomic64_t sint[HV_SYNIC_SINT_COUNT];
	
atomic_t sint_to_gsi[HV_SYNIC_SINT_COUNT];
	DECLARE_BITMAP(auto_eoi_bitmap, 256);
	DECLARE_BITMAP(vec_bitmap, 256);
	
bool active;
	
bool dont_zero_synic_pages;
};

/* Hyper-V per vcpu emulation context */

struct kvm_vcpu_hv {
	
u32 vp_index;
	
u64 hv_vapic;
	
s64 runtime_offset;
	
struct kvm_vcpu_hv_synic synic;
	
struct kvm_hyperv_exit exit;
	
struct kvm_vcpu_hv_stimer stimer[HV_SYNIC_STIMER_COUNT];
	DECLARE_BITMAP(stimer_pending_bitmap, HV_SYNIC_STIMER_COUNT);
};


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 pkru;
	
u32 hflags;
	
u64 efer;
	
u64 apic_base;
	
struct kvm_lapic *apic;    /* kernel irqchip context */
	
bool apicv_active;
	DECLARE_BITMAP(ioapic_handled_vectors, 256);
	
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;
	
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 injected;
		
bool has_error_code;
		
u8 nr;
		
u32 error_code;
		
u8 nested_apf;
	
} 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;
		
struct gfn_to_hva_cache stime;
		
struct kvm_steal_time steal;
	
} st;

	
u64 tsc_offset;
	
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 msr_platform_info;
	
u64 msr_misc_features_enables;

	
u64 mcg_cap;
	
u64 mcg_status;
	
u64 mcg_ctl;
	
u64 mcg_ext_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;
		
u32 host_apf_reason;
		
unsigned long nested_apf_token;
		
bool delivery_as_pf_vmexit;
	
} 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;

	/* GPA available */
	
bool gpa_available;
	
gpa_t gpa_val;

	/* be preempted when it's in kernel-mode(cpl=0) */
	
bool preempted_in_kernel;
};


struct kvm_lpage_info {
	
int disallow_lpage;
};


struct kvm_arch_memory_slot {
	
struct kvm_rmap_head *rmap[KVM_NR_PAGE_SIZES];
	
struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
	
unsigned short *gfn_track[KVM_PAGE_TRACK_MAX];
};

/*
 * 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;
	
u32 max_apic_id;
	union {
		
struct kvm_lapic *xapic_flat_map[8];
		
struct kvm_lapic *xapic_cluster_map[16][4];
	};
	
struct kvm_lapic *phys_map[];
};

/* Hyper-V emulation context */

struct kvm_hv {
	
struct mutex hv_lock;
	
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;

	
HV_REFERENCE_TSC_PAGE tsc_ref;
};


enum kvm_irqchip_mode {
	
KVM_IRQCHIP_NONE,
	
KVM_IRQCHIP_KERNEL,       /* created with KVM_CREATE_IRQCHIP */
	
KVM_IRQCHIP_SPLIT,        /* created with KVM_CAP_SPLIT_IRQCHIP */
};


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 kvm_page_track_notifier_node mmu_sp_tracker;
	
struct kvm_page_track_notifier_head track_notifier_head;

	
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;
	
u64 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 backwards_tsc_observed;
	
bool boot_vcpu_runs_old_kvmclock;
	
u32 bsp_vcpu_id;

	
u64 disabled_quirks;

	
enum kvm_irqchip_mode irqchip_mode;
	
u8 nr_reserved_ioapic_pins;

	
bool disabled_lapic_found;

	/* Struct members for AVIC */
	
u32 avic_vm_id;
	
u32 ldr_mode;
	
struct page *avic_logical_id_table_page;
	
struct page *avic_physical_id_table_page;
	
struct hlist_node hnode;

	
bool x2apic_format;
	
bool x2apic_broadcast_quirk_disabled;
};


struct kvm_vm_stat {
	
ulong mmu_shadow_zapped;
	
ulong mmu_pte_write;
	
ulong mmu_pte_updated;
	
ulong mmu_pde_zapped;
	
ulong mmu_flooded;
	
ulong mmu_recycled;
	
ulong mmu_cache_miss;
	
ulong mmu_unsync;
	
ulong remote_tlb_flush;
	
ulong lpages;
	
ulong max_mmu_page_hash_collisions;
};


struct kvm_vcpu_stat {
	
u64 pf_fixed;
	
u64 pf_guest;
	
u64 tlb_flush;
	
u64 invlpg;

	
u64 exits;
	
u64 io_exits;
	
u64 mmio_exits;
	
u64 signal_exits;
	
u64 irq_window_exits;
	
u64 nmi_window_exits;
	
u64 halt_exits;
	
u64 halt_successful_poll;
	
u64 halt_attempted_poll;
	
u64 halt_poll_invalid;
	
u64 halt_wakeup;
	
u64 request_irq_exits;
	
u64 irq_exits;
	
u64 host_state_reload;
	
u64 efer_reload;
	
u64 fpu_reload;
	
u64 insn_emulation;
	
u64 insn_emulation_fail;
	
u64 hypercalls;
	
u64 irq_injections;
	
u64 nmi_injections;
	
u64 req_event;
};

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);

	
int (*vm_init)(struct kvm *kvm);
	
void (*vm_destroy)(struct kvm *kvm);

	/* 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 (*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);
	
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);
	
bool (*get_enable_apicv)(struct kvm_vcpu *vcpu);
	
void (*refresh_apicv_exec_ctrl)(struct kvm_vcpu *vcpu);
	
void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
	
void (*hwapic_isr_update)(struct kvm_vcpu *vcpu, 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 (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu, hpa_t hpa);
	
void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
	
int (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
	
int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
	
int (*get_tdp_level)(struct kvm_vcpu *vcpu);
	
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 (*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);

	
void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);

	
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);
	
int (*write_log_dirty)(struct kvm_vcpu *vcpu);

	/* 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);

	
void (*vcpu_blocking)(struct kvm_vcpu *vcpu);
	
void (*vcpu_unblocking)(struct kvm_vcpu *vcpu);

	
int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq,
			      uint32_t guest_irq, bool set);
	
void (*apicv_post_state_restore)(struct kvm_vcpu *vcpu);

	
int (*set_hv_timer)(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc);
	
void (*cancel_hv_timer)(struct kvm_vcpu *vcpu);

	
void (*setup_mce)(struct kvm_vcpu *vcpu);
};


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_init_vm(struct kvm *kvm);
void kvm_mmu_uninit_vm(struct kvm *kvm);
void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
		u64 dirty_mask, u64 nx_mask, u64 x_mask, u64 p_mask,
		u64 acc_track_mask, u64 me_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);
bool pdptrs_changed(struct kvm_vcpu *vcpu);

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;
/* 1ull << kvm_tsc_scaling_ratio_frac_bits */
extern u64  kvm_default_tsc_scaling_ratio;

extern u64 kvm_mce_cap_supported;


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);
}


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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);
int kvm_fast_pio_in(struct kvm_vcpu *vcpu, int size, unsigned short port);
int 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);
}


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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);

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);

void kvm_vcpu_deactivate_apicv(struct kvm_vcpu *vcpu);

int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);

int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u64 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;
}


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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);
}


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static inline u16 kvm_read_ldt(void)
{
	u16 ldt;
	asm("sldt %0" : "=g"(ldt));
	return ldt;
}


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Xiantao Zhang1593.75%150.00%


Avi Kivity16.25%150.00%


Total16100.00%2100.00%






static inline void kvm_load_ldt(u16 sel)
{
	asm("lldt %0" : : "rm"(sel));
}


Contributors
PersonTokensPropCommitsCommitProp
Xiantao Zhang1090.91%150.00%


Avi Kivity19.09%150.00%


Total11100.00%2100.00%



#ifdef CONFIG_X86_64



static inline unsigned long read_msr(unsigned long msr)
{
	u64 value;

	rdmsrl(msr, value);
	return value;
}

Contributors
PersonTokensPropCommitsCommitProp
Xiantao Zhang25100.00%1100.00%


Total25100.00%1100.00%



#endif




static inline u32 get_rdx_init_val(void)
{
	return 0x600; /* P6 family */
}


Contributors
PersonTokensPropCommitsCommitProp
Xiantao Zhang13100.00%1100.00%


Total13100.00%1100.00%






static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
{
	kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
}


Contributors
PersonTokensPropCommitsCommitProp
Avi Kivity24100.00%1100.00%


Total24100.00%1100.00%




#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_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_make_mclock_inprogress_request(struct kvm *kvm);
void kvm_make_scan_ioapic_request(struct kvm *kvm);

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);

int kvm_skip_emulated_instruction(struct kvm_vcpu *vcpu);
int 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 *kvm, struct kvm_kernel_irq_routing_entry *e,
		     struct kvm_lapic_irq *irq);




static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu)
{
	if (kvm_x86_ops->vcpu_blocking)
		kvm_x86_ops->vcpu_blocking(vcpu);
}


Contributors
PersonTokensPropCommitsCommitProp
Suravee Suthikulpanit1560.00%150.00%


Christoffer Dall1040.00%150.00%


Total25100.00%2100.00%






static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu)
{
	if (kvm_x86_ops->vcpu_unblocking)
		kvm_x86_ops->vcpu_unblocking(vcpu);
}


Contributors
PersonTokensPropCommitsCommitProp
Suravee Suthikulpanit1560.00%150.00%


Christoffer Dall1040.00%150.00%


Total25100.00%2100.00%






static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}


Contributors
PersonTokensPropCommitsCommitProp
Christian Bornträger11100.00%1100.00%


Total11100.00%1100.00%






static inline int kvm_cpu_get_apicid(int mps_cpu)
{
#ifdef CONFIG_X86_LOCAL_APIC
	return __default_cpu_present_to_apicid(mps_cpu);
#else
	WARN_ON_ONCE(1);
	return BAD_APICID;
#endif
}


Contributors
PersonTokensPropCommitsCommitProp
Suravee Suthikulpanit31100.00%1100.00%


Total31100.00%1100.00%



#endif /* _ASM_X86_KVM_HOST_H */

Overall Contributors
PersonTokensPropCommitsCommitProp
Xiantao Zhang149725.28%173.85%


Gleb Natapov5158.70%265.88%


Paolo Bonzini4116.94%409.05%


Avi Kivity4106.92%5111.54%


Joerg Roedel3085.20%296.56%


Xiao Guangrong2704.56%357.92%


Jan Kiszka2243.78%173.85%


Andrey Smetanin1772.99%81.81%


Suravee Suthikulpanit1492.52%92.04%


Marcelo Tosatti1402.36%194.30%


Sheng Yang1402.36%184.07%


Kai Huang1382.33%30.68%


Yang Zhang1141.93%51.13%


Nadav Amit911.54%92.04%


Feng Wu901.52%61.36%


Radim Krčmář811.37%112.49%


Michael S. Tsirkin811.37%20.45%


Takuya Yoshikawa681.15%71.58%


Zachary Amsden671.13%102.26%


Izik Eidus621.05%30.68%


Glauber de Oliveira Costa601.01%40.90%


Andre Przywara570.96%51.13%


Christoffer Dall560.95%20.45%


Andrea Arcangeli440.74%20.45%


Tom Lendacky420.71%40.90%


Wanpeng Li410.69%71.58%


Haozhong Zhang370.62%40.90%


Suraj Jitindar Singh350.59%10.23%


Andrew Jones330.56%30.68%


Yunhong Jiang320.54%20.45%


Guillaume Thouvenin320.54%10.23%


Will Auld280.47%20.45%


Tang Chen260.44%20.45%


Alexander Graf230.39%51.13%


Ashok Raj190.32%10.23%


Dexuan Cui180.30%10.23%


Liu Jinsong180.30%20.45%


Kyle Huey170.29%30.68%


Bandan Das150.25%20.45%


Huang Ying130.22%10.23%


Christian Bornträger130.22%10.23%


Huaitong Han120.20%20.45%


Alex Williamson120.20%40.90%


Ladi Prosek120.20%20.45%


Boris Ostrovsky120.20%10.23%


Yu Zhang110.19%30.68%


Steve Rutherford100.17%40.90%


Wei Huang100.17%10.23%


Srivatsa Vaddagiri90.15%10.23%


Carsten Otte90.15%10.23%


Joel H Schopp90.15%10.23%


Junjie Mao90.15%10.23%


Junaid Shahid80.14%20.45%


Ben-Ami Yassour70.12%20.45%


Gerd Hoffmann70.12%10.23%


David Matlack70.12%30.68%


H. Peter Anvin70.12%20.45%


Peter Feiner60.10%10.23%


Roman Kagan60.10%20.45%


Andrew Honig60.10%20.45%


Andres Lagar-Cavilla50.08%10.23%


Eddie Dong50.08%20.45%


Longpeng( Mike)40.07%10.23%


Ed Swierk40.07%10.23%


Brijesh Singh40.07%10.23%


Andi Kleen30.05%10.23%


Sasha Levin30.05%10.23%


Kevin Wolf30.05%10.23%


Eugene Korenevsky30.05%10.23%


David Hildenbrand30.05%10.23%


Luiz Fernando N. Capitulino30.05%10.23%


James Sullivan30.05%10.23%


Hollis Blanchard20.03%10.23%


Tomasz Grabiec20.03%10.23%


Amit Shah20.03%10.23%


Robert Richter20.03%10.23%


Dave Hansen20.03%20.45%


Igor Mammedov10.02%10.23%


Dan Kenigsberg10.02%10.23%


Nadav Har'El10.02%10.23%


Vadim Rozenfeld10.02%10.23%


Joe Perches10.02%10.23%


Borislav Petkov10.02%10.23%


Thomas Gleixner10.02%10.23%


Total5921100.00%442100.00%


Directory: arch/x86/include/asm



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