IOMMU_DMA_RESERVED_REGION structure (wdm.h)

The IOMMU_DMA_RESERVED_REGION structure describes a region of memory that needs to be marked as reserved during ___domain creation. This structure is used by IOMMU_DOMAIN_CREATE_EX.

Syntax

typedef struct _IOMMU_DMA_RESERVED_REGION {
  struct _IOMMU_DMA_RESERVED_REGION *RegionNext;
  IOMMU_DMA_LOGICAL_ADDRESS         Base;
  SIZE_T                            NumberOfPages;
  BOOLEAN                           ShouldMap;
} IOMMU_DMA_RESERVED_REGION, *PIOMMU_DMA_RESERVED_REGION;

Members

RegionNext

Provides a pointer to the next reserved region.

Base

Provides the base address of the region to be reserved. Must be page-aligned.

NumberOfPages

Provides the number of pages to be reserved.

ShouldMap

Provides whether the reserved region should be identity mapped. If not, the region will not be mapped into the ___domain's page table at all.

Remarks

If the ___domain being created has a logical allocator, the logical address range will be marked as reserved within the logical allocator as well.

Requirements

See also

IOMMU_DOMAIN_CREATE_EX