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WHvUnmapVpciDeviceInterrupt

Removes a previously mapped interrupt for an assigned virtual PCI device.

Syntax

HRESULT
WINAPI
WHvUnmapVpciDeviceInterrupt(
    _In_ WHV_PARTITION_HANDLE Partition,
    _In_ UINT64 LogicalDeviceId,
    _In_ UINT32 Index
    );

Parameters

Partition

Handle to the partition that owns the virtual PCI device.

LogicalDeviceId

Specifies the logical device ID of the virtual PCI device, as assigned when the device was created.

Index

Specifies the index of the interrupt entry to unmap. This is the same index that was supplied to WHvMapVpciDeviceInterrupt when the interrupt was mapped.

Return Value

If the function succeeds, the return value is S_OK.

Remarks

The WHvUnmapVpciDeviceInterrupt function removes a mapping created by WHvMapVpciDeviceInterrupt. After the interrupt is unmapped, the physical resources backing the device no longer route interrupts at that index to the partition's virtual processors.

Requirements

Requirement Value
Minimum supported Windows Windows 10, version 20H2 (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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