Re: [fedora-virt] 3.13 - Nested KVM (vmx) totally broken?

[Kashyap Chamarthy <kchamart@redhat.com>]

On Tue, Mar 04, 2014 at 03:00:22PM +0530, Kashyap Chamarthy wrote:
> On Tue, Mar 04, 2014 at 09:13:40AM +0100, Paolo Bonzini wrote:
> > Il 04/03/2014 03:40, Ian Pilcher ha scritto:
> > >Is this a known problem?  I just tried using nested vmx for the first
> > >time since upgrading my system from F19 (3.12.?? at the time) to F20,
> > >and I cannot start any L2 guests.  The L2 guest appears to hang almost
> > >immediately after starting, consuming 100% of one of the L1 guest's
> > >VCPUs.
> > >
> > >If I reboot with kernel-3.12.10-300.fc20.x86_64, the problem does not
> > >occur.

Err, I missed to read this. Sorry about that.

> > >
> > >Any known workaround?  (Other than using 3.12.10?)
> 
> If you want to try, I made a Fedora Kernel scratch build (i.e. not
> official) with fix Paolo pointed to below and this works for me:
> 
>   http://koji.fedoraproject.org/koji/taskinfo?taskID=6577700
> 
> (NOTE: Fedora Scratch build URLs won't last more than 10 days or so)
> 
> > 
> > There is a fix on the way to the 3.13 kernel.
> > 
> > You can open a Fedora bug and ask them to include
> > http://article.gmane.org/gmane.linux.kernel.stable/82043/raw in the
> > kernel.
> > 
> > Paolo
> > --
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> 
> -- 
> /kashyap

-- 
/kashyap