Re: [Qemu-devel] [Spice-devel] Vioserial of Windows guest OS on Qemu 0.15

[Vadim Rozenfeld <vrozenfe@redhat.com>]

On Monday, March 19, 2012 01:56:03 PM Christophe Fergeau wrote:
> On Mon, Mar 19, 2012 at 01:42:21PM +0200, Vadim Rozenfeld wrote:
> > On Monday, March 19, 2012 12:12:59 PM Christophe Fergeau wrote:
> > > Hey,
> > > 
> > > On Mon, Mar 19, 2012 at 02:29:41PM +0800, Charles.Tsai-蔡清海-研究發展部 wrote:
> > > > 	3. When we disable and enable the new VirtIO driver several times
> > > > 	on either Qemu 1.0 or Qemu 1.0.50, VirtIo driver failed to work
> > > > 	after enabling the new VirtIO driver.
> > > 
> > > For what it's worth, Alon Levy also hit this particular bug a few
> > > months ago, and I successfully reproduced at that time. I think I
> > > reported it to Vadim back in the days, but I'm not 100% sure :)
> > > 
> > > Christophe
> > 
> > Thanks Christophe.
> > In your case (https://bugzilla.redhat.com/show_bug.cgi?id=750773)
> > an UP system hangs on shutdown.
> 
> In my case, the hang was during boot even though it magically went away
> sometimes in the last month
> 
> > I'm not sure whether Charles is hitting the same problem.
> 
> While trying to figure out what was going on with the bug above, I've
> definitely hit a "enabling/disabling vioserial in the device manager 3
> times causes the VM to freeze" bug.
> For what it's worth, lately I've also been experiencing VM freezes when
> installing vioserial in winxp or win7 UP VMs
OK. It looks like the same race condition, which I'm going to fix. 
> 
> Christophe