From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933180AbXGUHti (ORCPT ); Sat, 21 Jul 2007 03:49:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758662AbXGUHt1 (ORCPT ); Sat, 21 Jul 2007 03:49:27 -0400 Received: from ns.suse.de ([195.135.220.2]:41152 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757260AbXGUHt0 (ORCPT ); Sat, 21 Jul 2007 03:49:26 -0400 From: Andi Kleen Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg) To: Adrian Bunk Subject: Re: [RFC, Announce] Unified x86 architecture, arch/x86 Date: Sat, 21 Jul 2007 09:42:48 +0200 User-Agent: KMail/1.9.6 Cc: Steven Rostedt , Michal Piotrowski , Thomas Gleixner , LKML , Linus Torvalds , Andrew Morton , Ingo Molnar , Arjan van de Ven , Chris Wright References: <1184970779.4012.38.camel@chaos> <200707210806.12880.ak@suse.de> <20070721073533.GE3801@stusta.de> In-Reply-To: <20070721073533.GE3801@stusta.de> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200707210942.48444.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Saturday 21 July 2007 09:35:33 Adrian Bunk wrote: > The problem with the current "merging" is that it's extremely hard to > figure out whether some code in x86_64 might be using some code in i386 > since there are currently 5 (five) different mechanisms used for sharing > code between the two architectures. > > It happens so often that someone accidentally breaks one architecture > because he didn't notice the code also gets used on the other > architecture. That's not changing at all. Especially with even more sharing, (than I think would be prudent) like Thomas treated, you'll likely have to test compile both for most changes. -Andi