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

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On Sun, Feb 27, 2011 at 08:27:01PM +0100, Jan Kiszka wrote:
> On 2011-02-27 20:16, 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.
> >>
> > 
> > The trees the patch commit message refers to are qemu and qemu-kvm.
> 
> The same did I.
> 
> > qemu doesn't even have cpu_single_env.
> 
> Really? Check again. :)

Sorry, grepped the wrong repo. I'll send this to qemu-devel too then.

> 
> > It didn't talk about two qemu-kvm trees.
> > 
> >> My concerns regarding other side effects of juggling with global mutex
> >> in spice code remain.
> > 
> > I know there used to be a mutex in spice code and during the upstreaming process it
> > got ditched in favor of the qemu global io mutex. I would have rather deferred this
> > to Gerd since he wrote this, but he is not available atm.
> 
> It's not necessarily bad to drop the io mutex, but it is more tricky
> than it may appear on first glance.
> 
> Jan
> 


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