From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 25 Mar 2008 11:54:38 -0500 From: Jack Steiner Subject: Re: [PATCH] - Increase max physical memory size of x86_64 Message-ID: <20080325165438.GA5298@sgi.com> References: <20080321133157.GA10911@sgi.com> <20080325164154.GA5909@alberich.amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080325164154.GA5909@alberich.amd.com> Sender: owner-linux-mm@kvack.org Return-Path: To: Andreas Herrmann Cc: mingo@elte.hu, ak@suse.de, tglx@linutronix.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Tue, Mar 25, 2008 at 05:41:54PM +0100, Andreas Herrmann wrote: > On Fri, Mar 21, 2008 at 08:31:57AM -0500, Jack Steiner wrote: > > Increase the maximum physical address size of x86_64 system > > to 44-bits. This is in preparation for future chips that > > support larger physical memory sizes. > > Shouldn't this be increased to 48? > AMD family 10h CPUs actually support 48 bits for the > physical address. You are probably correct but I don't work with AMD processors and don't understand their requirements. If someone wants to submit a patch to support larger phys memory sizes, I certainly have no objections.... --- jack -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org