From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261441AbVF1MSW (ORCPT ); Tue, 28 Jun 2005 08:18:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261442AbVF1MSW (ORCPT ); Tue, 28 Jun 2005 08:18:22 -0400 Received: from ns.virtualhost.dk ([195.184.98.160]:57539 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S261441AbVF1MSR (ORCPT ); Tue, 28 Jun 2005 08:18:17 -0400 Date: Tue, 28 Jun 2005 14:16:24 +0200 From: Jens Axboe To: Denis Vlasenko Cc: Adrian Bunk , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [-mm patch] i386: enable REGPARM by default Message-ID: <20050628121623.GK4410@suse.de> References: <20050624200916.GJ6656@stusta.de> <200506251046.22944.vda@ilport.com.ua> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200506251046.22944.vda@ilport.com.ua> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jun 25 2005, Denis Vlasenko wrote: > On Friday 24 June 2005 23:09, Adrian Bunk wrote: > > This patch should _not_ go into Linus' tree. > > > > At some time in the future, we want to unconditionally enable REGPARM on > > i386. > > > > Let's give it a bit broader testing coverage among -mm users. > > > > This patch: > > - removes the dependency of REGPARM on EXPERIMENTAL > > - let REGPARM default to y > > > > This patch assumes that people who use -mm are willing to test some more > > experimental features. > > > > After this patch, REGPARM is still a config option users can disable. > > > > Signed-off-by: Adrian Bunk > > Jens Axboe had hit an obscure bug with regparm just yesterday. > It happened for him with gcc 3.3.5. > > I have a preprocessed .c file which allows to reporduce this. > For me, gcc 3.3.6 is okay. need to build 3.3.5 and test. > > Meanwhile, maybe we shall prohibit regparm if gcc <=3.3.6 or 3.4? It triggered without regparm as well, so I don't think that is to blame here. -- Jens Axboe