[Bug] virtio-gpu broken with qemu/kvm on arm64 on kernel 5.5+

[Gerd Hoffmann]

  Hi,

> > ... into 5.6-rc3 fixes the corruption for me.
> 
> I tried those 2 patches on top of kernel 5.6-rc3 and they indeed fix the problem.
> 
> I applied them on top of 5.5.6 and they also fix the problem!
> Could we get those 2 patches applied to stable 5.5, please?

Series just re-posted.  Reviews welcome.  With some luck this makes
5.6-rc4, 5.6-rc5 otherwise, and should hit stable shortly thereafter,

cheers,
  Gerd