Re: [Qemu-devel] Re: kvm crashes with spice while loading qxl

[Alon Levy]

On Wed, Mar 02, 2011 at 09:22:35AM +0100, Jan Kiszka wrote:
> On 2011-03-01 13:58, Alon Levy wrote:
> > On Sun, Feb 27, 2011 at 08:11:26PM +0100, Jan Kiszka wrote:
> >> On 2011-02-27 20:03, Alon Levy wrote:
> >>> On Sat, Feb 26, 2011 at 01:29:01PM +0100, Jan Kiszka wrote:
> >>>> On 2011-02-26 12:43, xming wrote:
> >>>>> When trying to start X (and it loads qxl driver) the kvm process just 
> >>>>> crashes.
> >>>
> >>> This is fixed by Gerd's attached patch (taken from rhel repository, don't 
> >>> know
> >>> why it wasn't pushed to qemu-kvm upstream). I'll send it to kvm list as 
> >>> well (separate email).
> >>
> >> Patch looks OK on first glance, but the changelog is misleading: This
> >> was broken for _both_ trees, but upstream didn't detect the bug.
> > 
> > So I didn't test with qemu not having this patch, but according to the 
> > discussion in the
> > launchpad bug the problem only happens with qemu-kvm. This doesn't rule out 
> > it being a
> > bug, perhaps it is just triggered much less frequently I guess.
> 
> Again: qemu-kvm has the instrumentation to detect the bug, qemu is
> lacking this, but both trees will break subtly if cpu_current_env is not
> properly restored.

ok, so what do you want to be done further before this patch is applied?

> 
> Jan
>