From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: Re: [PATCH] xen: mask XSAVE in cpuid since we don't allow guests to use it Date: Wed, 11 Mar 2009 09:50:13 -0700 Message-ID: <49B7EBC5.3020209@goop.org> References: <814026.1960.qm@web56103.mail.re3.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <814026.1960.qm@web56103.mail.re3.yahoo.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: bderzhavets@yahoo.com Cc: Xen-devel , Keir Fraser List-Id: xen-devel@lists.xenproject.org Boris Derzhavets wrote: > It's not so important for me. The important thing is:- > > CentOS 5.2 PV DomU may be loaded only the very first time under Suse's > 2.6.27 xen-ified kernel & Xen Unstable ( the most recent). Attempt to > shutdown and start it again gives VBD cannot be connected . Hotplug > scripts not working. That's a core issue, same behavior as under > 2.6.29-rc7 (with XSAVE patch ). Kernel doesn't seem to be a root cause. > I believe Xen unstable is broken in some way. > Could you try bisecting xen-unstable to see which change started failing for you? There were some recent changes to the hotplug scripts which could have introduced a problem. However, I'm pretty sure I started seeing this problem without updating my usermode tools, so there could also be a kernel problem. But its not obvious what it might be. Thanks, J