DXGKCB_UNMAPMDLFROMIOMMU callback function (d3dkmddi.h)
DXGKCB_UNMAPMDLFROMIOMMU releases the mapping that was set by DXGKCB_MAPMDLTOIOMMU.
Syntax
DXGKCB_UNMAPMDLFROMIOMMU DxgkcbUnmapmdlfromiommu;
void DxgkcbUnmapmdlfromiommu(
[in] IN_CONST_HANDLE hAdapter,
[in] IN_CONST_PDXGKARGCB_UNMAPMDLFROMIOMMU pUnmapMdlFromIoMmu
)
{...}
Parameters
[in] hAdapter
A handle to a display adapter. The driver provides this handle for the master/lead device in the LDA chain.
[in] pUnmapMdlFromIoMmu
A pointer to the DXGKARGCB_UNMAPMDLFROMIOMMU structure that contains a handle to the memory to be unmapped.
Return value
None
Remarks
DXGKCB_XXX functions are implemented by Dxgkrnl. To use this callback function, set the members of DXGKARGCB_UNMAPMDLFROMIOMMU and then calls DxgkCbUnmapMdlFromIoMmu via the DXGKRNL_INTERFACE.
See IOMMU-based GPU isolation for more information.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10, version 1803 (WDDM 2.4) |
| Header | d3dkmddi.h |
| IRQL | PASSIVE_LEVEL |