From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263364AbVFYHqu (ORCPT ); Sat, 25 Jun 2005 03:46:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263348AbVFYHqu (ORCPT ); Sat, 25 Jun 2005 03:46:50 -0400 Received: from 167.imtp.Ilyichevsk.Odessa.UA ([195.66.192.167]:50618 "HELO port.imtp.ilyichevsk.odessa.ua") by vger.kernel.org with SMTP id S263364AbVFYHqg (ORCPT ); Sat, 25 Jun 2005 03:46:36 -0400 From: Denis Vlasenko To: Adrian Bunk , Andrew Morton Subject: Re: [-mm patch] i386: enable REGPARM by default Date: Sat, 25 Jun 2005 10:46:22 +0300 User-Agent: KMail/1.5.4 Cc: linux-kernel@vger.kernel.org References: <20050624200916.GJ6656@stusta.de> In-Reply-To: <20050624200916.GJ6656@stusta.de> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200506251046.22944.vda@ilport.com.ua> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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? -- vda