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WHvRequestInterrupt

Requests an interrupt be delivered to one or more virtual processors in a partition.

Syntax

#if defined(_AMD64_)

typedef enum WHV_INTERRUPT_TYPE
{
    WHvX64InterruptTypeFixed            = 0,
    WHvX64InterruptTypeLowestPriority   = 1,
    WHvX64InterruptTypeNmi              = 4,
    WHvX64InterruptTypeInit             = 5,
    WHvX64InterruptTypeSipi             = 6,
    WHvX64InterruptTypeLocalInt1        = 9,
} WHV_INTERRUPT_TYPE;

typedef enum WHV_INTERRUPT_DESTINATION_MODE
{
    WHvX64InterruptDestinationModePhysical,
    WHvX64InterruptDestinationModeLogical,
} WHV_INTERRUPT_DESTINATION_MODE;

typedef enum WHV_INTERRUPT_TRIGGER_MODE
{
    WHvX64InterruptTriggerModeEdge,
    WHvX64InterruptTriggerModeLevel,
} WHV_INTERRUPT_TRIGGER_MODE;

typedef struct WHV_INTERRUPT_CONTROL
{
    UINT64 Type : 8;             // WHV_INTERRUPT_TYPE
    UINT64 DestinationMode : 4;  // WHV_INTERRUPT_DESTINATION_MODE
    UINT64 TriggerMode : 4;      // WHV_INTERRUPT_TRIGGER_MODE
    UINT64 TargetVtl : 8;        // WHV_VTL
    UINT64 Reserved : 40;
    UINT32 Destination;
    UINT32 Vector;
} WHV_INTERRUPT_CONTROL;

#elif defined(_ARM64_)

typedef enum WHV_INTERRUPT_TYPE
{
    WHvArm64InterruptTypeFixed             = 0x0000,

    //
    // Maximum (exclusive) value of interrupt type.
    //
    WHvArm64InterruptTypeMaximum           = 0x0008,
} WHV_INTERRUPT_TYPE;

typedef union WHV_INTERRUPT_CONTROL2
{
    UINT64 AsUINT64;
    struct
    {
        WHV_INTERRUPT_TYPE InterruptType;
        UINT32 Reserved1:2;
        UINT32 Asserted:1;
        UINT32 Retarget:1;
        UINT32 Reserved2:28;
    };
} WHV_INTERRUPT_CONTROL2;

typedef struct WHV_INTERRUPT_CONTROL
{
    UINT64                  TargetPartition;
    WHV_INTERRUPT_CONTROL2  InterruptControl;
    UINT64                  DestinationAddress;
    UINT32                  RequestedVector;
    UINT8                   TargetVtl;
    UINT8                   ReservedZ0;
    UINT16                  ReservedZ1;
} WHV_INTERRUPT_CONTROL;

#endif // defined(_ARCH_)

HRESULT
WINAPI
WHvRequestInterrupt(
    _In_ WHV_PARTITION_HANDLE Partition,
    _In_ const WHV_INTERRUPT_CONTROL* Interrupt,
    _In_ UINT32 InterruptControlSize
    );

Parameters

Partition

Specifies the partition to interrupt.

Interrupt

Specifies the interrupt's characteristics and destination.

InterruptControlSize

Specifies the size of Interrupt, in bytes.

Return Value

If the function succeeds, the return value is S_OK.

Remarks

The WHvRequestInterrupt function requests that an interrupt described by the WHV_INTERRUPT_CONTROL structure be delivered to the partition.

Requirements

Requirement Value
Minimum supported Windows Windows 10, version 1809 (x64); Windows 11, version 24H2, build 26100.3915 (Arm64)
Header WinHvPlatform.h
Library WinHvPlatform.lib
DLL WinHvPlatform.dll
Architecture x64, Arm64

See also

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