From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755579AbZHYSaU (ORCPT ); Tue, 25 Aug 2009 14:30:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755452AbZHYSaT (ORCPT ); Tue, 25 Aug 2009 14:30:19 -0400 Received: from claw.goop.org ([74.207.240.146]:55731 "EHLO claw.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750821AbZHYSaS (ORCPT ); Tue, 25 Aug 2009 14:30:18 -0400 Message-ID: <4A942DB9.3020209@goop.org> Date: Tue, 25 Aug 2009 11:30:17 -0700 From: Jeremy Fitzhardinge User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.1) Gecko/20090814 Fedora/3.0-2.6.b3.fc11 Lightning/1.0pre Thunderbird/3.0b3 MIME-Version: 1.0 To: Ingo Molnar CC: Arnd Hannemann , Pekka Enberg , Arnd Hannemann , LKML , "hannes@cmpxchg.org" , "torvalds@linux-foundation.org" , "xen-devel@lists.xensource.com" , Benjamin Herrenschmidt Subject: Re: [bisected] 2.6.31 regression: fails to boot as xen guest References: <4A9407B1.6020400@nets.rwth-aachen.de> <84144f020908250929t7d4a74f1n4827de04e5c4c56a@mail.gmail.com> <4A94161A.2020609@nets.rwth-aachen.de> <1251219129.4852.1.camel@penberg-laptop> <4A94242E.30309@nets.rwth-aachen.de> <1251223399.13451.5.camel@penberg-laptop> <4A942BDD.70303@nets.rwth-aachen.de> <20090825182510.GA6903@elte.hu> In-Reply-To: <20090825182510.GA6903@elte.hu> X-Enigmail-Version: 0.97a Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/25/09 11:25, Ingo Molnar wrote: > * Arnd Hannemann wrote: > > >> Pekka Enberg wrote: >> >>> On Tue, 2009-08-25 at 19:49 +0200, Arnd Hannemann wrote: >>> >>>> Hi Pekka, >>>> >>>> Pekka Enberg wrote: >>>> >>>>> On Tue, 2009-08-25 at 18:49 +0200, Arnd Hannemann wrote: >>>>> >>>>>>> Thanks for doing the bisect! Can we also see your .config >>>>>>> also? >>>>>>> >>>>>> Config for -rc7 is attached. My bisect configs were based on >>>>>> that >>>>>> >>>>> Thanks! While we wait for the Xen people, you can try the >>>>> following patch to see if we can narrow the bug down to >>>>> trap_init(). >>>>> >>>> Yes seems to be trap_init(). -rc7 with this patch applied boots up >>>> to the prompt. >>>> >>> Thanks for testing! Ingo, what do you think of the following patch? >>> AFAICT, x86-32 is the only architecture playing with traps in >>> mem_init() so this should be the safest fix for 2.6.31. >>> >> Hmm, -rc7 + this fix does not work for me :-/ >> Still hangs before any output... >> > does earlyprintk=vga tell you anything about precisely where it > hangs? > It's a Xen domain, so it should be earlyprintk=xen J