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Mm64BitPhysicalAddress

The Mm64BitPhysicalAddress global variable is a pointer to a BOOLEAN value that specifies whether the hardware and operating system support 64-bit physical addresses.

PBOOLEAN Mm64BitPhysicalAddress;

Remarks

The Mm64BitPhysicalAddress variable points to a value that is TRUE if the hardware and operating system support 64-bit physical addresses, and is FALSE otherwise.

For more information about how to use this variable in your driver, see Performing DMA in 64-Bit Windows.

Requirements

Version

Available starting with Windows 2000.

Header

Wdm.h (include Wdm.h, Ntddk.h, or Ntifs.h)

Library

Ntoskrnl.lib

 

 

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