Re: arm64: virtio broken in upstream kernel

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On Fri, Nov 07, 2014 at 08:31:20PM +0100, Christoffer Dall wrote:
> On Wed, Oct 22, 2014 at 10:53:16PM +0100, Richard W.M. Jones wrote:
> > On Wed, Oct 22, 2014 at 10:46:39PM +0100, Richard W.M. Jones wrote:
> > > I also reverted this patch on top of the 3.18.0+rc1 kernel, and I see:
> > > 
> > >   supermin: internal insmod virtio.ko
> > >   supermin: internal insmod virtio_ring.ko
> > >   supermin: internal insmod virtio_blk.ko
> > >   supermin: internal insmod virtio-rng.ko
> > >   supermin: internal insmod virtio_console.ko
> > >   supermin: internal insmod virtio_net.ko
> > >   supermin: internal insmod scsi_transport_spi.ko
> > >   supermin: internal insmod virtio_scsi.ko
> > >   supermin: internal insmod virtio_balloon.ko
> > >   supermin: internal insmod virtio_mmio.ko
> > >   [    2.765223] BUG: failure at include/linux/virtio_config.h:125/virtio_device_ready()!
> > 
> > I realize this part wasn't very clear.
> > 
> > With the 3.18.0+rc1 kernel: virtio devices just don't show up, there
> > is no kernel message or "BUG".
> > 
> > With the 3.18.0+rc1 kernel + reverting 421520ba9829: I see the BUG
> > message above.
> > 
> > I think this indicates there is a second bug ["BUG...virtio_device_ready()!"]
> > lurking underneath the first one (devices not showing up).
> > 
> I haven't gone back and tested but I've used virtio mmio devices (block,
> net, and console) the last wekk on v3.18-rc3 without issues.
> 
> Are you still seeing this?

Sorry - just got back from holiday!

Yes, I am still seeing this.  I'm now using 3.18.0-0.rc5.

I'm going to try Yalin Wang's patch next.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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