On Thu, 26 Feb 2015 09:45:29 +0100 "Michael S. Tsirkin" <[email protected]> wrote:
> On Thu, Feb 26, 2015 at 11:50:42AM +1030, Rusty Russell wrote: > > Thomas Huth <[email protected]> writes: > > > Hi all, > > > > > > with the recent kernel 3.19, I get a kernel warning when I start my > > > KVM guest on s390 with virtio balloon enabled: > > > > The deeper problem is that virtio_ccw_get_config just silently fails on > > OOM. > > Same problem with virtio_ccw_reset. > But avoiding kmalloc calls in virtio_ccw_get_config isn't enough I think, > it might still sleep. It is probably a problem with all calls into the transport that assume an implementation that cannot fail: If we have a channel I/O backing, we need to be able to handle things not working. The only case we need to care about for virtio is probably a -ENODEV triggered by a hotunplug, though. _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
