IOMMU_UNMAP_RESERVED_LOGICAL_RANGE callback function (wdm.h)
Unmaps a previously mapped reserved logical range. Unlike IOMMU_UNMAP_LOGICAL_RANGE, this is guaranteed not to delete any page table resources so that the logical address range can be reused without performing any memory allocations.
Syntax
IOMMU_UNMAP_RESERVED_LOGICAL_RANGE IommuUnmapReservedLogicalRange;
NTSTATUS IommuUnmapReservedLogicalRange(
[in, out] PIOMMU_DMA_LOGICAL_ADDRESS_TOKEN_MAPPED_SEGMENT MappedSegment
)
{...}
Parameters
[in, out] MappedSegment
The IOMMU_DMA_LOGICAL_ADDRESS_TOKEN_MAPPED_SEGMENT to be unmapped.
Return value
STATUS_SUCCESS if the operation is successful.
STATUS_INVALID_PARAMETER if the mapped segment provided was not mapped.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported server | Windows Server 2022 |
| Header | wdm.h (include Wdm.h) |