Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755124Ab0BEJAf (ORCPT ); Fri, 5 Feb 2010 04:00:35 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:33305 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753513Ab0BEJAd (ORCPT ); Fri, 5 Feb 2010 04:00:33 -0500 Date: Fri, 5 Feb 2010 10:00:09 +0100 From: Ingo Molnar To: Dave Airlie Cc: Matthew Garrett , linux-kernel@vger.kernel.org, Jesse Barnes , dri-devel@lists.sf.net, Alex Deucher , Andrew Morton , torvalds@linux-foundation.org Subject: Re: hung bootup with "drm/radeon/kms: move radeon KMS on/off switch out of staging." Message-ID: <20100205090009.GA8272@elte.hu> References: <20100204190649.GB6665@elte.hu> <20100204193232.GD6665@elte.hu> <20100204115316.69beee75@jbarnes-piketon> <20100204202254.GA24716@elte.hu> <20100204204829.GA24608@srcf.ucam.org> <20100204210559.GC19050@elte.hu> <20100204210950.GA25295@srcf.ucam.org> <20100205075645.GF9320@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: 0.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=0.0 required=5.9 tests=none autolearn=no SpamAssassin version=3.2.5 _SUMMARY_ Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1612 Lines: 42 * Dave Airlie wrote: > > > If it now does not boot up if all its sub-options are enabled, even of some > > of those sub-options are new, does that count as a driver regression? Sure it > > does to me ... > > But it doesn't to anyone else under any reasonable meaning of the word > regression. There are reactions in this thread that contradict your 'anyone else' point. > The config option states > "Choose this option if you want kernel modesetting enabled by default, > and you have a new enough userspace to support this. Running old > userspaces with this enabled will cause pain." > > Will cause pain sounds painful to me, I can make it seem much worse if > you'd like. Except you are missing that the hang (and the first crash as well) happens on brand-new user-space just as much - not just on 'old userspaces'. The bugs i've triggered are independent of any user-space component - it happens with a fresh distro just as much. As i suggested before, at least the text should be updated to include what has been written about CONFIG_DRM_RADEON_KMS in this thread before: > This is a completely new driver. It's only part of the existing drm for > compatibility reasons. It requires an entirely different graphics stack > above it and works very differently from the old drm stack. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/