Выход из типов данных контекста

Типы данных контекста выхода из выхода виртуального процессора описывают контекст выхода виртуального процессора. Они определяют причины выхода и структуры контекста, которые записывают, почему виртуальный процессор завершил работу и состояние процессора во время выхода.

Синтаксис

//
// Reason for a VM exit
//

#if defined(_AMD64_)

typedef enum WHV_RUN_VP_EXIT_REASON
{
    WHvRunVpExitReasonNone                   = 0x00000000,

    // Standard exits caused by operations of the virtual processor
    WHvRunVpExitReasonMemoryAccess           = 0x00000001,
    WHvRunVpExitReasonX64IoPortAccess        = 0x00000002,
    WHvRunVpExitReasonUnrecoverableException = 0x00000004,
    WHvRunVpExitReasonInvalidVpRegisterValue = 0x00000005,
    WHvRunVpExitReasonUnsupportedFeature     = 0x00000006,
    WHvRunVpExitReasonX64InterruptWindow     = 0x00000007,
    WHvRunVpExitReasonX64Halt                = 0x00000008,
    WHvRunVpExitReasonX64ApicEoi             = 0x00000009,
    WHvRunVpExitReasonSynicSintDeliverable   = 0x0000000A,

    // Additional exits that can be configured through partition properties
    WHvRunVpExitReasonX64MsrAccess           = 0x00001000,
    WHvRunVpExitReasonX64Cpuid               = 0x00001001,
    WHvRunVpExitReasonException              = 0x00001002,
    WHvRunVpExitReasonX64Rdtsc               = 0x00001003,
    WHvRunVpExitReasonX64ApicSmiTrap         = 0x00001004,
    WHvRunVpExitReasonHypercall              = 0x00001005,
    WHvRunVpExitReasonX64ApicInitSipiTrap    = 0x00001006,
    WHvRunVpExitReasonX64ApicWriteTrap       = 0x00001007,

    // Exits caused by the host
    WHvRunVpExitReasonCanceled               = 0x00002001,
} WHV_RUN_VP_EXIT_REASON;

#elif defined(_ARM64_)

typedef enum WHV_RUN_VP_EXIT_REASON
{
    WHvRunVpExitReasonNone                   = 0x00000000,

    // Standard exits caused by operations of the virtual processor
    WHvRunVpExitReasonUnmappedGpa            = 0x80000000,
    WHvRunVpExitReasonGpaIntercept           = 0x80000001,
    WHvRunVpExitReasonUnrecoverableException = 0x80000021,
    WHvRunVpExitReasonInvalidVpRegisterValue = 0x80000020,
    WHvRunVpExitReasonUnsupportedFeature     = 0x80000022,
    WHvRunVpExitReasonSynicSintDeliverable   = 0x80000062,
    WHvMessageTypeRegisterIntercept          = 0x80010006,
    WHvRunVpExitReasonArm64Reset             = 0x8001000c,

    // Additional exits that can be configured through partition properties
    WHvRunVpExitReasonHypercall              = 0x80000050,

    WHvRunVpExitReasonCanceled              = 0xFFFFFFFF
} WHV_RUN_VP_EXIT_REASON;

#endif // _ARCH_

#if defined(_AMD64_)

//
// Execution state of the virtual processor
//
typedef union WHV_X64_VP_EXECUTION_STATE
{
    struct
    {
        UINT16 Cpl : 2;
        UINT16 Cr0Pe : 1;
        UINT16 Cr0Am : 1;
        UINT16 EferLma : 1;
        UINT16 DebugActive : 1;
        UINT16 InterruptionPending : 1;
        UINT16 Reserved0 : 5;
        UINT16 InterruptShadow : 1;
        UINT16 Reserved1 : 3;
    };

    UINT16 AsUINT16;
} WHV_X64_VP_EXECUTION_STATE;

//
// Execution context of a virtual processor at the time of an exit
//
typedef struct WHV_X64_VP_EXIT_CONTEXT
{
    WHV_X64_VP_EXECUTION_STATE ExecutionState;
    UINT8 InstructionLength : 4;
    UINT8 Cr8 : 4;
    UINT8 Reserved;
    UINT32 Reserved2;
    WHV_X64_SEGMENT_REGISTER Cs;
    UINT64 Rip;
    UINT64 Rflags;
} WHV_X64_VP_EXIT_CONTEXT, WHV_VP_EXIT_CONTEXT;

#elif defined(_ARM64_)

//
// Define virtual processor execution state bitfield.
//

typedef union WHV_VP_EXECUTION_STATE
{
    UINT16 AsUINT16;
    struct
    {
        UINT16 Cpl:2;
        UINT16 DebugActive:1;
        UINT16 InterruptionPending:1;
        UINT16 Vtl:4;
        UINT16 VirtualizationFaultActive:1;
        UINT16 Reserved:7;
    };
} WHV_VP_EXECUTION_STATE;

//
// Define intercept message header structure.
//

typedef struct WHV_INTERCEPT_MESSAGE_HEADER
{
    UINT32 VpIndex;
    UINT8 InstructionLength;
    UINT8 InterceptAccessType; // WHV_MEMORY_ACCESS_TYPE
    WHV_VP_EXECUTION_STATE ExecutionState;
    UINT64 Pc;
    UINT64 Cpsr;
} WHV_INTERCEPT_MESSAGE_HEADER;

#endif // _ARCH_

// WHvRunVirtualProcessor output buffer
typedef struct WHV_RUN_VP_EXIT_CONTEXT
{
    WHV_RUN_VP_EXIT_REASON ExitReason;
    UINT32 Reserved;

#if defined(_AMD64_)
    WHV_VP_EXIT_CONTEXT VpContext;
#elif defined(_ARM64_)
    UINT64 Reserved1;
#endif

    union
    {
        WHV_MEMORY_ACCESS_CONTEXT MemoryAccess;
        WHV_RUN_VP_CANCELED_CONTEXT CancelReason;
        WHV_HYPERCALL_CONTEXT Hypercall;
        WHV_SYNIC_SINT_DELIVERABLE_CONTEXT SynicSintDeliverable;
#if defined(_AMD64_)
        WHV_X64_IO_PORT_ACCESS_CONTEXT IoPortAccess;
        WHV_X64_MSR_ACCESS_CONTEXT MsrAccess;
        WHV_X64_CPUID_ACCESS_CONTEXT CpuidAccess;
        WHV_VP_EXCEPTION_CONTEXT VpException;
        WHV_X64_INTERRUPTION_DELIVERABLE_CONTEXT InterruptWindow;
        WHV_X64_UNSUPPORTED_FEATURE_CONTEXT UnsupportedFeature;
        WHV_X64_APIC_EOI_CONTEXT ApicEoi;
        WHV_X64_RDTSC_CONTEXT ReadTsc;
        WHV_X64_APIC_SMI_CONTEXT ApicSmi;
        WHV_X64_APIC_INIT_SIPI_CONTEXT ApicInitSipi;
        WHV_X64_APIC_WRITE_CONTEXT ApicWrite;
        UINT64 AsUINT64[22];
#elif defined(_ARM64_)
        WHV_UNRECOVERABLE_EXCEPTION_CONTEXT UnrecoverableException;
        WHV_INVALID_VP_REGISTER_CONTEXT InvalidVpRegister;
        WHV_REGISTER_CONTEXT Register;
        WHV_ARM64_RESET_CONTEXT Arm64Reset;
        UINT64 AsUINT64[32];
#endif
    };
} WHV_RUN_VP_EXIT_CONTEXT;

Remarks

WHvRunVirtualProcessor записывает структуру при каждом выходе WHV_RUN_VP_EXIT_CONTEXT . Член ExitReason — это WHV_RUN_VP_EXIT_REASON значение, определяющее, почему виртуальный процессор перестал работать, и конечный союз несет структуру контекста, соответствующую этой причине.

Набор причин выхода и макет контекста выхода зависят от архитектуры.

См. также

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