DXGKARGCB_ALLOCATEPAGESFORMDL - NtDoc
Native API online documentation, based on the System Informer
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headers
// d3dkmddi.h
typedef struct _DXGKARGCB_ALLOCATEPAGESFORMDL {
[in] PHYSICAL_ADDRESS LowAddress;
[in] PHYSICAL_ADDRESS HighAddress;
[in] PHYSICAL_ADDRESS SkipBytes;
[in] SIZE_T TotalBytes;
[in] DXGK_MEMORY_CACHING_TYPE CacheType;
[in] ULONG Flags;
[out] HANDLE hMemoryHandle;
[out] PMDL pMdl;
} DXGKARGCB_ALLOCATEPAGESFORMDL;
View the official Windows Driver Kit DDI referenceNo description available.
The DXGKARGCB_ALLOCATEPAGESFORMDL structure contains the arguments used in the DXGKCB_ALLOCATEPAGESFORMDL callback function, to allocate pages for a memory descriptor list (MDL).
LowAddress [in]Specifies the physical address of the start of the first address range from which the allocated pages can come.
HighAddress [in]Specifies the physical address of the end of the first address range from which the allocated pages can come.
SkipBytes [in]Specifies the number of bytes to skip from the start of the previous address range from which the allocated pages can come. SkipBytes must be an integer multiple of the virtual memory page size, in bytes.
TotalBytes [in]Specifies the total number of bytes to allocate for the MDL.
CacheType [in]Indicates the type of caching that is allowed for the requested memory.
Flags [in]Specifies the flags for this operation. For more information, see MmAllocatePagesForMdlEx function.
hMemoryHandle [out]A Dxgkrnl tracking handle for the allocation. This value should be passed to the corresponding DGXKCB_FREEPAGESFROMMDL callback function.
pMdl [out]An MDL of non-paged memory guaranteed to be mapped to the IOMMU for its lifetime.
See IOMMU-based GPU isolation for more information.