From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262157AbVAIAXA (ORCPT ); Sat, 8 Jan 2005 19:23:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262163AbVAIAXA (ORCPT ); Sat, 8 Jan 2005 19:23:00 -0500 Received: from emailhub.stusta.mhn.de ([141.84.69.5]:60939 "HELO mailout.stusta.mhn.de") by vger.kernel.org with SMTP id S262157AbVAIAW6 (ORCPT ); Sat, 8 Jan 2005 19:22:58 -0500 Date: Sun, 9 Jan 2005 01:22:53 +0100 From: Adrian Bunk To: Andrew Morton Cc: linux-kernel@vger.kernel.org Subject: Re: [-mm patch] always enable regparm on i386 Message-ID: <20050109002253.GJ14108@stusta.de> References: <20050108205049.GR14108@stusta.de> <20050108155248.25393222.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050108155248.25393222.akpm@osdl.org> User-Agent: Mutt/1.5.6+20040907i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jan 08, 2005 at 03:52:48PM -0800, Andrew Morton wrote: > Adrian Bunk wrote: > > > > The patch below always enables regparm on i386 (with gcc >= 3.0). > > > > With this patch, it should get a better testing coverage in -mm. > > > > If this doesn't cause any problems, I plan to send a patch to completely > > remove the CONFIG_REGPARM option after 2.6.11 will be released. > > -mregparm has revealed at least two kernel bugs thus far. The ability to > disable -mregparm is a useful diagnostic tool. You are still able to disable it by editing the Kconfig file. And even if the option will no longer be present at some time in the future, it will be trivial to disable it in the Makefile. But currently (an option depending on EXPERIMENTAL) the testing coverage isn't that big, and with this -mm patch, most people using -mm [1] will have it enabled and notice if other problems pop up. cu Adrian [1] except for those with gcc < 3.0 or !i386 -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed