From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753073AbYCLJSW (ORCPT ); Wed, 12 Mar 2008 05:18:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751351AbYCLJRw (ORCPT ); Wed, 12 Mar 2008 05:17:52 -0400 Received: from one.firstfloor.org ([213.235.205.2]:55142 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750965AbYCLJRw (ORCPT ); Wed, 12 Mar 2008 05:17:52 -0400 Date: Wed, 12 Mar 2008 10:19:50 +0100 From: Andi Kleen To: Eric Dumazet Cc: Andi Kleen , andreas.herrmann3@amd.com, tglx@linutronix.de, mingo@elte.hu, linux-kernel@vger.kernel.org Subject: Re: [PATCH] [4/7] Don't use large pages to map the first 2/4MB of memory Message-ID: <20080312091950.GB31389@one.firstfloor.org> References: <20080312353.598285931@firstfloor.org> <20080312025330.AC1961B41D1@basil.firstfloor.org> <47D76C72.2080603@cosmosbay.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <47D76C72.2080603@cosmosbay.com> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Should we then change CONFIG_PHYSICAL_START from 0x100000 to 0x400000 ? Yes that would be probably a good idea. This means for PAE and 64bit kernels 2MB is ok too, for i386 non PAE 4MB. The SUSE 64bit kernels have been using that for quite some time. -Andi