IOMMU_UNMAP_IDENTITY_RANGE_EX callback function (wdm.h)
Deletes an identity mapping created by IOMMU_MAP_IDENTITY_RANGE_EX.
Syntax
IOMMU_UNMAP_IDENTITY_RANGE_EX IommuUnmapIdentityRangeEx;
NTSTATUS IommuUnmapIdentityRangeEx(
[in] PIOMMU_DMA_DOMAIN Domain,
[in] PIOMMU_MAP_PHYSICAL_ADDRESS MappedPhysicalAddress
)
{...}
Parameters
[in] Domain
A pointer to the IOMMU_DMA_DOMAIN that the identity mapped physical address belongs to. The domain must be of type DomainTypeTranslate or DomainTypePassThrough. For more information about domain types, see IOMMU_DMA_DOMAIN_TYPE.
[in] MappedPhysicalAddress
The IOMMU_MAP_PHYSICAL_ADDRESS representing the identity mapped address to delete.
Return value
STATUS_SUCCESS if the operation is successful. Possible error return values include the following status codes.
| Return | Description |
|---|---|
| STATUS_INVALID_PARAMETER_1 | The domain provided is not of type DomainTypeTranslate or DomainTypePassThrough |
| STATUS_INVALID_PARAMETER_2 | The IOMMU_MAP_PHYSICAL_ADDRESS provided does not represent physical memory that is page-aligned and has a size that is a multiple of PAGE_SIZE. |
| STATUS_NOT_SUPPORTED | The provided domain contains a logical allocator that does not allow explicit logical address allocation. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported server | Windows Server 2022 |
| Header | wdm.h (include Wdm.h) |