From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932066AbZHYTNp (ORCPT ); Tue, 25 Aug 2009 15:13:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755799AbZHYTNp (ORCPT ); Tue, 25 Aug 2009 15:13:45 -0400 Received: from slowhand.arndnet.de ([88.198.19.76]:55521 "EHLO mail.unitix.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754680AbZHYTNo (ORCPT ); Tue, 25 Aug 2009 15:13:44 -0400 Message-ID: <4A9437E4.4060609@nets.rwth-aachen.de> Date: Tue, 25 Aug 2009 21:13:40 +0200 From: Arnd Hannemann User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: Pekka Enberg CC: Arnd Hannemann , LKML , "hannes@cmpxchg.org" , "torvalds@linux-foundation.org" , Jeremy Fitzhardinge , "xen-devel@lists.xensource.com" , Ingo Molnar , 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> <1251226720.13451.15.camel@penberg-laptop> <1251227271.13451.16.camel@penberg-laptop> In-Reply-To: <1251227271.13451.16.camel@penberg-laptop> 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 Pekka Enberg wrote: > On Tue, 2009-08-25 at 21:58 +0300, Pekka Enberg wrote: >> On Tue, 2009-08-25 at 20:22 +0200, 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... >> Arnd, does this work for you? > > Here's a version of the patch that actually compiles. :-) Great, this actually works, too :-) Boots up to the prompt. Best regards, Arnd