From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: Re: xen/stable 2.6.32.9 32bit dom0 kernel crashes early on boot Date: Tue, 09 Mar 2010 11:33:18 -0800 Message-ID: <4B96A27E.50906@goop.org> References: <20100304195337.GF2761@reaktio.net> <4B90157D.5090900@goop.org> <20100304202316.GG2761@reaktio.net> <20100304202837.GH2761@reaktio.net> <4B902733.4090205@goop.org> <20100305071359.GI2761@reaktio.net> <20100305105101.GS2761@reaktio.net> <20100306150509.GL2580@reaktio.net> <20100308181713.GG4568@phenom.dumpdata.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20100308181713.GG4568@phenom.dumpdata.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Konrad Rzeszutek Wilk Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On 03/08/2010 10:17 AM, Konrad Rzeszutek Wilk wrote: > On Sat, Mar 06, 2010 at 05:05:09PM +0200, Pasi K=E4rkk=E4inen wrote: > =20 >> On Fri, Mar 05, 2010 at 12:51:02PM +0200, Pasi K=E4rkk=E4inen wrote: >> =20 >>> On Fri, Mar 05, 2010 at 09:13:59AM +0200, Pasi K=E4rkk=E4inen wrote: >>> =20 >>>> On Thu, Mar 04, 2010 at 01:33:39PM -0800, Jeremy Fitzhardinge wrote: >>>> =20 >>>>> On 03/04/2010 12:28 PM, Pasi K=E4rkk=E4inen wrote: >>>>> =20 >>>>>> It was 2.6.31.12-174.2.22.fc12.i686.PAE saying the above.. >>>>>> 2.6.32.9 xen/stable booted on baremetal doesn't say anything about= NX. >>>>>> >>>>>> =20 >>>>> What happens if you boot with noexec=3Dno on the kernel command lin= e? >>>>> >>>>> =20 >>>> noexec=3Dno didn't change anything.. still crashes. console output i= s the same as earlier. >>>> I also checked the BIOS, it didn't seem to have any NX settings. >>>> >>>> =20 >>> latest xen/master 2.6.31.6 seems to boot OK on this box, with the sam= e Xen 4.0.0-rc5 hypervisor. >>> >>> successful bootlog of xen/master 2.6.31.6 here: >>> http://pasik.reaktio.net/xen/pv_ops-dom0-debug/pv_ops-dom0-xen-master= -2.6.31.6-32b-works-log03.txt >>> >>> =20 >> xen/stable 2.6.32.9 boots OK on baremetal (without Xen). >> Does it help to have a log of the boot on baremetal? >> >> Here are a couple of xen/stable 2.6.32.9 crashing boots as Xen dom0, >> with various debugging options, and also with "acpi=3Doff": >> =20 > Could you find what is at c0405dbe and around that area with gdb? > =20 I think the problem is that there's something happening in=20 kernel/head_32.S to test for NX and disable it if not present, which=20 isn't happening on the Xen startup path. But I haven't investigated=20 that yet. J