DXGKCB_UNMAPPHYSICALMEMORY callback function (d3dkmddi.h)
DXGKCB_UNMAPPHYSICALMEMORY unmaps a CPU-visible virtual address from the underlying physical memory.
Syntax
DXGKCB_UNMAPPHYSICALMEMORY DxgkcbUnmapphysicalmemory;
void DxgkcbUnmapphysicalmemory(
[in] IN_CONST_PDXGKARGCB_UNMAP_PHYSICAL_MEMORY pArgs
)
{...}
Parameters
[in] pArgs
Pointer to a DXGKARGCB_UNMAP_PHYSICAL_MEMORY structure that contains information about the physical memory object from which the CPU-visible address is being unmapped.
Return value
None
Remarks
DXGKCB_XXX functions are implemented by Dxgkrnl. To use this callback function, set the members of DXGKARGCB_UNMAP_PHYSICAL_MEMORY and then call DxgkCbUnmapPhysicalMemory via the DXGKRNL_INTERFACE.
See IOMMU DMA remapping for more information.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported server | Windows Server 2022 (WDDM 2.9) |
| Header | d3dkmddi.h |
| IRQL | PASSIVE_LEVEL |