From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: Re: [PATCH] xen: mask XSAVE in cpuid since we don't
	allow guests to use it
Date: Wed, 11 Mar 2009 10:04:30 -0700
Message-ID: <49B7EF1E.2000802@goop.org>
References: <639362.93674.qm@web56107.mail.re3.yahoo.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <639362.93674.qm@web56107.mail.re3.yahoo.com>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: bderzhavets@yahoo.com
Cc: Xen-devel <xen-devel@lists.xensource.com>, Keir Fraser <keir.fraser@eu.citrix.com>
List-Id: xen-devel@lists.xenproject.org

Boris Derzhavets wrote:
> >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.
> No. It's above me.
>         
>

If you're fetching xen-unstable with "hg" and building it, then you have 
everything you need to do bisection:

   1. hg bisect -r
   2. hg bisect -g <known good version>
   3. hg bisect -b <known bad version>
   4. build as usual and test
         1. if works: hg bisect -g
         2. if not: hg bisect -b
   5. repeat 4 until first bad version has been isolated

Thanks,
    J