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DXGKDDI_GETGPUPARTITIONINFO callback function (dispmprt.h)

  • Article

Returns physical GPU partition information. The DXGKDDI_GETGPUPARTITIONINFO callback function is called once during the graphics adapter initialization.

Syntax

DXGKDDI_GETGPUPARTITIONINFO DxgkddiGetgpupartitioninfo;

NTSTATUS DxgkddiGetgpupartitioninfo(
  HANDLE Context,
  DXGKARG_GETGPUPARTITIONINFO *pArgs
)
{...}

Parameters

Context

A handle to the driver context.

pArgs

Pointer to a DXGKARG_GETGPUPARTITIONINFO structure that contains arguments.

Return value

Return one of the following values:

  • STATUS_SUCCESS
  • STATUS_BUFFER_TOO_SMALL
  • If any other return code is specified the GPU will be excluded from partitioning

Remarks

The OS will set a particular partition count (one of the driver returned values) before a first vGPU is created. Unless the buffer is not large enough, a driver should always set NumGpuPartitionOptions and CurrentGpuPartitionCount, even when returning STATUS_BUFFER_TOO_SMALL.

Requirements

Requirement Value
Header dispmprt.h
IRQL PASSIVE_LEVEL