Returns the physical address for a valid buffer described by the call parameters. If the buffer is read-write and contiguous across the range of cbLength, and is mapped into the caller's virtual segment, a 64-bit value representing the extended physical address of the buffer is returned.

QWORD GetRtPhysicalAddress64(
    PVOID pOffset,    // pointer to buffer
    DWORD cbLength,     // length of buffer
    DWORD dwReserved    // reserved value
);

Parameters

pOffset

A pointer to the buffer whose address will be converted.

cbLength

The length of the buffer.

dwReserved

Reserved for future use.

Return Values

The 64-bit physical address for a valid buffer described by the call parameters.

Success.

BAD_PHYSICAL_ADDRESS_64

Failure. To determine the status, call GetLastRtError.

Requirements