MmGetPhysicalAddress function (ntddk.h)

Article
02/22/2024

The MmGetPhysicalAddress routine returns the physical address corresponding to a valid nonpaged virtual address.

Syntax

PHYSICAL_ADDRESS MmGetPhysicalAddress(
  [in] PVOID BaseAddress
);

Parameters

[in] BaseAddress

Pointer to the virtual address for which to return the physical address.

Return value

MmGetPhysicalAddress returns the physical address that corresponds to the given virtual address.

Do not use this routine to obtain physical addresses for use with DMA operations. For information about the proper techniques for performing DMA operations, see Adapter Objects and DMA.

Remarks

Callers of MmGetPhysicalAddress can be running at any IRQL, provided that the BaseAddress value is valid.

Requirements

Requirement	Value
Minimum supported client	Available starting with Windows 2000.
Target Platform	Universal
Header	ntddk.h (include Ntddk.h)
Library	NtosKrnl.lib
DLL	NtosKrnl.exe
IRQL	Any level (see Remarks section)