Re: [Xen-devel] Re: [PATCH] xen: mask XSAVE in cpuid since we don't allow guests to use it

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

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

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