From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261169AbUDGVsz (ORCPT ); Wed, 7 Apr 2004 17:48:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264187AbUDGVsy (ORCPT ); Wed, 7 Apr 2004 17:48:54 -0400 Received: from ns.suse.de ([195.135.220.2]:4293 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id S261169AbUDGVr5 (ORCPT ); Wed, 7 Apr 2004 17:47:57 -0400 Date: Wed, 7 Apr 2004 23:47:51 +0200 From: Andi Kleen To: Anton Blanchard Cc: david@gibson.dropbear.id.au, akpm@osdl.org, linux-kernel@vger.kernel.org, benh@kernel.crashing.org, paulus@samba.org, linuxppc64-dev@lists.linuxppc.org Subject: Re: RFC: COW for hugepages Message-Id: <20040407234751.4c652283.ak@suse.de> In-Reply-To: <20040407214116.GA18493@krispykreme> References: <20040407074239.GG18264@zax> <20040407143447.4d8f08af.ak@suse.de> <20040407142748.GO26474@krispykreme> <20040407165041.23d8d82a.ak@suse.de> <20040407214116.GA18493@krispykreme> X-Mailer: Sylpheed version 0.9.7 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 8 Apr 2004 07:41:16 +1000 Anton Blanchard wrote: > > > All they did was to modify the code to lazy faulting. That is > > architecture specific > > > > (and add the mpol code, but that was pretty minor) > > > > COW is a different thing though. > > Why is it architecture specific? I dont understand why you cant make > lazy faulting common code. My understanding was that you needed special magic on IA64 and PPC64. If that's wrong you can probably do it, but you may need new TLB flush primitives. -Andi