Re: [Qemu-devel] latest rc: virtio-blk hangs forever after migration

[Marcelo Tosatti]

On Wed, Jul 16, 2014 at 09:35:16AM +0200, Marcin Gibuła wrote:
> >Andrey,
> >
> >Can you please provide instructions on how to create reproducible
> >environment?
> >
> >The following patch is equivalent to the original patch, for
> >the purposes of fixing the kvmclock problem.
> >
> >Perhaps it becomes easier to spot the reason for the hang you are
> >experiencing.
> 
> Marcelo,
> 
> the original reason for patch adding cpu_synchronize_all_states()
> there was because this bug affected non-migration operations as well
> -
> http://lists.gnu.org/archive/html/qemu-devel/2014-06/msg00472.html.
> 
> Won't moving it only to migration code break these things again?

Yes - its just for debug purposes.