// dispmprt.h

DXGKDDI_GETGPUPARTITIONINFO DxgkddiGetgpupartitioninfo;

NTSTATUS DxgkddiGetgpupartitioninfo(
  HANDLE Context,
  DXGKARG_GETGPUPARTITIONINFO *pArgs
)
{...}
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Windows Driver Kit DDI reference (nc-dispmprt-dxgkddi_getgpupartitioninfo)

DXGKDDI_GETGPUPARTITIONINFO callback function

Description

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

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

Prototype

//Declaration

DXGKDDI_GETGPUPARTITIONINFO DxgkddiGetgpupartitioninfo;

// Definition

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

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.

DXGKDDI_GETGPUPARTITIONINFO - NtDoc