[PATCH v3 0/2] vfio: add vgpu edid support

[Gerd Hoffmann]

  Hi,

> > This looks good to me, but I'm not clear if the discussion about pixel
> > clocks fully ran its course.  Zhenyu, are you satisfied GVT-g can work
> > within this interface?  Any comments from NVIDIA?  Thanks,
> 
> As of now, default edid with basic modes is provided with NVIDIA driver,
> so don't have such requirement.

The advantage would be that the default mode can be changed, so the host
can give a hint to the guest which of the video modes should be used.

The qemu test branch[1] adds xres and yres properties as showcase, i.e.
you can use -device vfio-pci,xres=1280,yres=900,...

> As I understand, if VFIO_REGION_SUBTYPE_GFX_EDID region is not provided
> by vendor driver, console vnc should work as it is now.

Yes, the region is optional.

cheers,
  Gerd

[1] https://git.kraxel.org/cgit/qemu/log/?h=sirius/edid-vfio