MmUnmapReservedMapping function (wdm.h)
The MmUnmapReservedMapping routine unmaps a memory buffer that was mapped by the MmMapLockedPagesWithReservedMapping routine.
Syntax
void MmUnmapReservedMapping(
[in] PVOID BaseAddress,
[in] ULONG PoolTag,
[in] PMDL MemoryDescriptorList
);
Parameters
[in] BaseAddress
Pointer to the beginning of the reserved virtual memory range. This must be an address returned by MmMapLockedPagesWithReservedMapping.
[in] PoolTag
Specifies the pool tag for the reserved memory buffer. This must be identical to the value specified in the PoolTag parameter of the call to MmAllocateMappingAddress that initially reserved the buffer.
[in] MemoryDescriptorList
Pointer to the MDL that describes the physical memory mapping.
Return value
None
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows XP and later versions of Windows. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | <=DISPATCH_LEVEL |