From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261202AbTD1Qqg (ORCPT ); Mon, 28 Apr 2003 12:46:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261203AbTD1Qqg (ORCPT ); Mon, 28 Apr 2003 12:46:36 -0400 Received: from franka.aracnet.com ([216.99.193.44]:36821 "EHLO franka.aracnet.com") by vger.kernel.org with ESMTP id S261202AbTD1Qqe (ORCPT ); Mon, 28 Apr 2003 12:46:34 -0400 Date: Mon, 28 Apr 2003 09:58:31 -0700 From: "Martin J. Bligh" To: Dave Hansen , Andi Kleen cc: Carl-Daniel Hailfinger , Henti Smith , linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net Subject: Re: [Lse-tech] Re: maximum possible memory limit .. Message-ID: <483810000.1051549109@[10.10.2.4]> In-Reply-To: <3EAD5C44.103@us.ibm.com> References: <20030424200524.5030a86b.bain@tcsn.co.za> <3EAD27B2.9010807@gmx.net> <20030428141023.GC4525@Wotan.suse.de> <3EAD44BF.30808@gmx.net> <20030428151648.GF4525@Wotan.suse.de> <3EAD5C44.103@us.ibm.com> X-Mailer: Mulberry/2.2.1 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>> and 64GB is available from vendors who are willing to apply the pgcl >>> patch. >> >> Nobody is doing that. pgcl is 2.5 only and seems to be still quite >> instable. Also it's extremly intrusive. > > Bill will probably wake up any time now and chime in, but don't forget > all of the drivers. > ># grep -r PAGE_SIZE drivers/ | wc -l > 893 > > Each one of those needs to be audited before pgcl is acceptable to a > wide audience. We've already seen plenty of stuff that breaks. ext2/3 > look to be all right, but I know that JFS is broken. Well, the upside is that he's only doing s/PAGE_SIZE/MMU_PAGESIZE/ in most places, which are normally both 4K. So it will have no effect whatsoever unless you explicitly turn it on. M.