Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753001AbYCJVIz (ORCPT ); Mon, 10 Mar 2008 17:08:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755722AbYCJVIq (ORCPT ); Mon, 10 Mar 2008 17:08:46 -0400 Received: from terminus.zytor.com ([198.137.202.10]:54579 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752807AbYCJVIp (ORCPT ); Mon, 10 Mar 2008 17:08:45 -0400 Message-ID: <47D5A000.6000407@zytor.com> Date: Mon, 10 Mar 2008 21:54:24 +0100 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Jeremy Fitzhardinge CC: Andi Kleen , Hugh Dickins , Christoph Lameter , Andrew Morton , Ingo Molnar , KOSAKI Motohiro , Thomas Gleixner , LKML , Linus Torvalds , Bart Van Assche Subject: Re: quicklists confuse meminfo References: <20080309111456.GA21690@elte.hu> <20080309210000.C6DE.KOSAKI.MOTOHIRO@jp.fujitsu.com> <20080309120940.GA1695@elte.hu> <20080309123432.GA3267@elte.hu> <20080309114640.85c9c3eb.akpm@linux-foundation.org> <87myp68r88.fsf@basil.nowhere.org> <47D57056.3050204@goop.org> <20080310175305.GC7692@one.firstfloor.org> <47D57F86.2020806@goop.org> In-Reply-To: <47D57F86.2020806@goop.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 667 Lines: 18 Jeremy Fitzhardinge wrote: > > Yeah, the most fundamental problem is that the whole page is RO, so even > if Xen trapped and emulated, it still makes a very bad neighbour. I was > also going to say that there's no reason why you couldn't pack multiple > pgds into one page, but I think we can only specify the cr3 at page > resolution anyway. > Wrong. With PAE you can specify it at any 32-byte boundary. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/