From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751168AbWAJSp2 (ORCPT ); Tue, 10 Jan 2006 13:45:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751170AbWAJSp2 (ORCPT ); Tue, 10 Jan 2006 13:45:28 -0500 Received: from rtr.ca ([64.26.128.89]:41149 "EHLO mail.rtr.ca") by vger.kernel.org with ESMTP id S1751168AbWAJSp1 (ORCPT ); Tue, 10 Jan 2006 13:45:27 -0500 Message-ID: <43C400C4.2090504@rtr.ca> Date: Tue, 10 Jan 2006 13:45:24 -0500 From: Mark Lord User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20051013 Debian/1.7.12-1ubuntu1 X-Accept-Language: en, en-us MIME-Version: 1.0 To: "Jeff V. Merkey" Cc: Linus Torvalds , Martin Bligh , Jens Axboe , Byron Stanoszek , Ingo Molnar , linux-kernel@vger.kernel.org, Andrew Morton Subject: Re: 2G memory split References: <20060110125852.GA3389@suse.de> <20060110132957.GA28666@elte.hu> <20060110133728.GB3389@suse.de> <20060110143931.GM3389@suse.de> <43C3F986.4090209@mbligh.org> <43C3E74D.7060309@wolfmountaingroup.com> In-Reply-To: <43C3E74D.7060309@wolfmountaingroup.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jeff V. Merkey wrote: > Linus Torvalds wrote: >> On Tue, 10 Jan 2006, Martin Bligh wrote: >>> The non-1GB-aligned ones need to be disbarred when PAE is on, I think. >> Well, right now _all_ the non-3:1 cases need to be disbarred. I think >> we depend on the kernel mapping only ever being the _one_ last entry >> in the top-level page table, which is only true with the 3:1 mapping. >> >> But I didn't check. .. > > No. It works fine (or seems to) with 2:2 mapping. I've tested with these > extensively .. The boundary for 2:2 with the current patch is 0x78000000, not 0x80000000. It may still work, but nobody's checked yet. cheers