From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: Re: FC15: 32-bit PV guest crash on restore on x64_86 host Date: Fri, 6 May 2011 13:12:14 -0400 Message-ID: <20110506171214.GA9499@dumpdata.com> References: <4DC1AFC9.2070407@redhat.com> <20110504201951.GB2117@dumpdata.com> <4DC1BF08.50903@redhat.com> <20110504211320.GA6769@dumpdata.com> <20110505212804.GA9501@dumpdata.com> <4DC41EDA.6020908@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <4DC41EDA.6020908@redhat.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: Igor Mammedov Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Fri, May 06, 2011 at 06:16:26PM +0200, Igor Mammedov wrote: > On 05/05/2011 11:28 PM, Konrad Rzeszutek Wilk wrote: > >On Wed, May 04, 2011 at 05:13:20PM -0400, Konrad Rzeszutek Wilk wrote: > >>On Wed, May 04, 2011 at 11:03:04PM +0200, Igor Mammedov wrote: > >>>On 05/04/2011 10:19 PM, Konrad Rzeszutek Wilk wrote: > >>>>On Wed, May 04, 2011 at 09:58:01PM +0200, Igor Mammedov wrote: > >>>>>On restore 32bit PV guest crashes on x64_86 host, while x64_86 PV guest > >>>>>works as expected. > >I tried this with 2.6.39-rc6 and could not reproduce this. Does it work > >for you with 2.6.39-rc6? Or is it _only_ failing with 2.6.38? > > > > > It's failing with 2.6.39-rc6 as well. And 2.6.38 with suggested > patches as well. > > But since I do like fast builds, I've used fast PC with 2 NUMA nodes > at least and Hmm, the guest is a single CPU one, so perhaps you are hitting a hypervisor issue. What happens if you turn NUMA off on the hypervisor line? > it turns out that the bug is not reproducible on PC with only one > cpu (HPZ800 > 1 socket config). So you can reproduce it if you try a PC with at > least 2 cpus > nodes. Ok, I've an old IBM x366 that has four sockets - that should do it - but will have to wait till next week when I am back from traveling.