linux-kernel - physical memory limit of 64-bit linux

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Message-Id: <200812161556.25518.ms@teamix.de>
Date:	Tue, 16 Dec 2008 15:56:19 +0100
From:	Martin Steigerwald <ms@...mix.de>
To:	linux-kernel@...r.kernel.org
Subject: physical memory limit of 64-bit linux

Hi!

What is the physical memory limit for 64-bit Linux? I read about 40 bit 
address bus for AMD Athlon X2 (1 TB) and 48 bit for Barcelona X4 (256 TB).

Is 64-bit linux able to use that amount - provided that one would manage to 
build it into a machine? Or does it have a lower limit?

Looking into the Google crystal ball gives unclear pictures... I tend to 
assume that Linux would handle it, but I am not sure.

Ciao,
-- 
Martin Steigerwald - team(ix) GmbH - http://www.teamix.de
gpg: 19E3 8D42 896F D004 08AC A0CA 1E10 C593 0399 AE90

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