From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: [PATCH/RFC] Shared page tables Date: Tue, 24 Jan 2006 02:11:58 +0100 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: owner-linux-mm@kvack.org Return-Path: To: Dave McCracken Cc: Ray Bryant , Robin Holt , Hugh Dickins , Linux Kernel , Linux Memory Management List-ID: 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org