Am Montag, den 10.09.2018, 10:37 +0200 schrieb Gerd Hoffmann:
...
> > The other question is of course, why did dma_buf_export fail for me
> > ...
>
> What exactly did you try?
I ran
qemu-system-x86_64 -enable-kvm -smp 5 -M q35 -m 8G \
-drive format=raw,file=ubuntu.raw,if=virtio \
-net nic,model=virtio -net user,hostfwd=tcp::2224-:22 \
-vga virtio
ubuntu.raw = Ubuntu 18.04 (bionic) + 4.17 kernel (from Ubuntu cosmic).
The VM boots up to a certain point, the last line from the boot log is
varying, as far as I can see it is a few lines after virtio_blk detects
the disks.
When I add '-display sdl' the Xsession freezes. I was still able to log
in remotely and kill -9 qemu, then X11 became usable again.
In all cases I get on the host:
qemu-system-x86_64: info: udmabuf: init ok
and there it stays, certainly because of the kernel bug reported.
Best,
Gert
