From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: Kernel 3 Crashes on 4.2 unstable Date: Tue, 2 Aug 2011 12:25:32 -0400 Message-ID: <20110802162532.GN11133@dumpdata.com> References: <4E35A7D6.3000403@darwinistic.com> <20110801014520.GQ32373@reaktio.net> <4E36F79D.9010100@darwinistic.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline In-Reply-To: <4E36F79D.9010100@darwinistic.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: Andi Reinbrech Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org On Mon, Aug 01, 2011 at 08:59:41PM +0200, Andi Reinbrech wrote: > On 2011/08/01 03:45 AM, Pasi K=E4rkk=E4inen wrote: > >On Sun, Jul 31, 2011 at 09:07:02PM +0200, Andi Reinbrech wrote: > >>Hi, > >> > >>I am unable to pinpoint this problem; on an old core2duo Xen 4.2 and > >>kernel 3.0 as dom0 works, but on a newer i5 (same distro, same packag= es, > >>all "baselined") the crashes as soon as Xen finishes booting. Does the kernel crash if you boot it as baremetal? > >> > >>The crash happens before anything useful is written to the serial > >>console, and causes the machine a complete warm boot with no exceptio= ns > >>or error messages. > >> > >>I have tried nomodeset, but I'm not sure the kernel gets as far as > >>initialising graphics, it may still be in the stage of unpacking the > >>initrd. > >> > >>I would greatly appreciate any pointers to try an help to debug this,= or > >>hear from other testers with similar experience. > >> > >>The config of kernel 3.0 I'm using is the "vanilla" fedora rawhide > >>version, 3.0 however, not the latest git rc. > >> > >See http://wiki.xen.org/xenwiki/XenParavirtOps > >the chapter called "Are there more debugging options I could enable to= troubleshoot problems with Xen and/or dom0 kernel?" > > > >Make sure you enable all those.. > > > >-- Pasi > > > Thank you Pasi, >=20 > Will dig a bit deeper. I saw that page also has very detailed > instructions for a custom kernel, I will try and tune a little and > compile a few versions. I have a feeling it may very well be > graphics related. Will feed back here when I have details. >=20 > I have extensive C and hardware/embedded knowledge and would love to > get a bit more involved in Xen. Hopefully I can contribute, however > small, here and there :-) Awesome. Not sure if the 'earlyprintk=3Dxenboot' is mentioned in the Wiki= but that one is quite useful.