DXGKDDI_WRITEVIRTUALIZEDINTERRUPT callback function (d3dkmddi.h)
DxgkDdiWriteVirtualizedInterrupt services writes to the MSI-X interrupt table during the process of live migration of a virtualized GPU device.
Syntax
DXGKDDI_WRITEVIRTUALIZEDINTERRUPT DxgkddiWritevirtualizedinterrupt;
NTSTATUS DxgkddiWritevirtualizedinterrupt(
IN_CONST_HANDLE hAdapter,
IN_CONST_PDXGKARG_GPUP_WRITE_VIRTUALIZED_MSIX pArgs
)
{...}
Parameters
hAdapter
[in] A handle to a context block associated with a display adapter. The display miniport driver previously provided this handle to Dxgkrnl in the MiniportDeviceContext output parameter of the DXGKDDI_ADD_DEVICE function.
pArgs
[in] Pointer to a DXGKARG_GPUP_WRITE_VIRTUALIZED_MSIX structure that contains information needed to write to the MSI-X table.
Return value
DxgkDdiWriteVirtualizedInterrupt returns STATUS_SUCCESS upon successful completion of the write operation; otherwise it returns an appropriate NTSTATUS code.
Remarks
KMD's DxgkDdiWriteVirtualizedInterrupt is used in the context of virtualizing GPU devices, specifically for handling interrupts. The MSI-X (Message Signaled Interrupts eXtended) table is a data structure used in the PCI (Peripheral Component Interconnect) system of a computer, which allows for device-specific handling of interrupts.
DxgkDdiWriteVirtualizedInterrupt should write the values specified in WriteValue to the MSI-X table.
For more information, see Live migration on GPU-P devices.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 11, version 24H2 (WDDM 3.2) |
| Header | d3dkmddi.h |
| IRQL | PASSIVE_LEVEL |