Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757295Ab0HDJGT (ORCPT ); Wed, 4 Aug 2010 05:06:19 -0400 Received: from rcsinet10.oracle.com ([148.87.113.121]:43696 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756254Ab0HDJGR (ORCPT ); Wed, 4 Aug 2010 05:06:17 -0400 Message-ID: <4C592D60.5050309@kernel.org> Date: Wed, 04 Aug 2010 02:05:36 -0700 From: Yinghai Lu User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.11) Gecko/20100714 SUSE/3.0.6 Thunderbird/3.0.6 MIME-Version: 1.0 To: Tvrtko Ursulin CC: Avi Kivity , "linux-kernel@vger.kernel.org" , KVM list , "Eric W. Biederman" Subject: Re: 2.6.35 hangs on early boot in KVM References: <201008031028.57263.tvrtko.ursulin@sophos.com> <201008031659.58736.tvrtko.ursulin@sophos.com> <201008040918.58318.tvrtko.ursulin@sophos.com> In-Reply-To: <201008040918.58318.tvrtko.ursulin@sophos.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Source-IP: acsmt355.oracle.com [141.146.40.155] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090204.4C592D77.008C,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2180 Lines: 55 On 08/04/2010 01:18 AM, Tvrtko Ursulin wrote: > On Tuesday 03 Aug 2010 21:57:48 Yinghai Lu wrote: >> On Tue, Aug 3, 2010 at 8:59 AM, Tvrtko Ursulin >> >> wrote: >>> On Tuesday 03 Aug 2010 16:17:20 Tvrtko Ursulin wrote: >>>> On Tuesday 03 Aug 2010 15:57:03 Tvrtko Ursulin wrote: >>>>> On Tuesday 03 Aug 2010 15:51:08 Avi Kivity wrote: >>>>>> On 08/03/2010 12:28 PM, Tvrtko Ursulin wrote: >>>>>>> I have basically built 2.6.35 with make oldconfig from a working >>>>>>> 2.6.34. Latter works fine in kvm while 2.6.35 hangs very early. I >>>>>>> see nothing after grub (have early printk and verbose bootup >>>>>>> enabled), just a blinking VGA cursor and CPU at 100%. >>>>>> >>>>>> Please copy kvm@vger.kernel.org on kvm issues. >>>>>> >>>>>>> CONFIG_PRINTK_TIME=y >>>>>> >>>>>> Try disabling this as a workaround. >>>>> >>>>> I am in the middle of a bisect run with five builds left to go, >>>>> currently I have: >>>>> >>>>> bad 537b60d17894b7c19a6060feae40299d7109d6e7 >>>>> good 93c9d7f60c0cb7715890b1f9e159da6f4d1f5a65 >>>> >>>> Bisect is looking good, narrowed it to ten revisions, but I am not sure >>>> to make it to the end today: >>>> >>>> bad cb41838bbc4403f7270a94b93a9a0d9fc9c2e7ea >>>> good 41d59102e146a4423a490b8eca68a5860af4fe1c >>> >>> Bisect points the finger to "x86, ioapic: In mpparse use >>> mp_register_ioapic" (cf7500c0ea133d66f8449d86392d83f840102632), so I am >>> copying Eric. No idea whether this commit is solely to blame or it is a >>> combined interaction with KVM, but I am sure you guys will know. >>> >>> If you want me to test something else please shout. >> >> please try attached patch, to see if it help. > > No luck (no visible difference, no output on VGA or serial console). (Btw > there is a typo in pin_2_irq_leagcy so that you do not push it directly). can you try current tip with earlyprintk=ttyS0,115200 or console=uart8250,io,0x3f8,115200? Thanks Yinghai -- 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/