Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030277AbWAXBUp (ORCPT ); Mon, 23 Jan 2006 20:20:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030278AbWAXBUp (ORCPT ); Mon, 23 Jan 2006 20:20:45 -0500 Received: from ns2.suse.de ([195.135.220.15]:62891 "EHLO mx2.suse.de") by vger.kernel.org with ESMTP id S1030279AbWAXBUn (ORCPT ); Mon, 23 Jan 2006 20:20:43 -0500 From: Andi Kleen To: Dave McCracken Subject: Re: [PATCH/RFC] Shared page tables Date: Tue, 24 Jan 2006 02:11:58 +0100 User-Agent: KMail/1.8.2 Cc: Ray Bryant , Robin Holt , Hugh Dickins , Linux Kernel , Linux Memory Management References: <200601240139.46751.ak@suse.de> <08A96D993E5CB2984F6F448A@[10.1.1.4]> In-Reply-To: <08A96D993E5CB2984F6F448A@[10.1.1.4]> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200601240211.59171.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 693 Lines: 17 On Tuesday 24 January 2006 01:51, Dave McCracken wrote: > Most of the large OLTP applications use fixed address > mapping for their large shared regions. Really? That sounds like a quite bad idea because it can easily break if something changes in the way virtual memory is laid out (which has happened - e.g. movement to 4level page tables on x86-64 and now randomized mmaps) I don't think we should encourage such unportable behaviour. -Andi - 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/