Re: [Qemu-devel] [PATCH v4 0/7] vfio: add display support

[Gerd Hoffmann <kraxel@redhat.com>]

On Mon, Feb 19, 2018 at 03:16:49PM -0700, Alex Williamson wrote:
> On Mon, 19 Feb 2018 12:14:51 +0100
> Gerd Hoffmann <kraxel@redhat.com> wrote:
> 
> > This series adds support for a vgpu display to the qemu vfio code.
> > For now only regions are supported, dmabufs will follow later.
> > 
> > This version adds a patch to allow devices disable hotplugging, which
> > will be used by vfio display support.  Also fixed issues Alex found in
> > review.
> 
> Looks ok to me, if this is to go through my tree I'll need a qdev ack
> for 4/7.  If you want to go a different route, for 5-7:
> 
> Acked-by: Alex Williamson <alex.williamson@redhat.com>
> 
> I'm still a bit confused though, what's preventing us from adding
> dmabuf support now?  It's strange to provide the implementation for the
> proprietary, unavailable vendor driver implementation first.  Is GVT-g
> broken, lagging?  Thanks,

A bit more complicated because it depends on user interface changes ...

Sneak preview at https://www.kraxel.org/cgit/qemu/log/?h=work/intel-vgpu
Note: branch is a moving target ;)

State:
  vfio:  Working, needs some cleanups though (drop debug logging, ...).
  gtk:   Working, needs some minor cleanups too.
  spice: Partly working (no mouse ptr yet).
  sdl:   Not working.  Need to figure how I get a egl context (instead
         of glx).  Possibly requires SDL 2.2.  Tina looked at this a
         while back, need to look at some old mails ...

Current plan:
  (1) fix/complete spice support.
  (2) cleanup patches, send them out.
  (3) look at the SDL issues.