EDID / guest resolution handling

[Gerd Hoffmann]

On Thu, Feb 20, 2020 at 02:04:05PM +0100, Julian Stecklina wrote:
> Hello,
> 
> we wondering what the best way is to handle different guest resolutions.
> Specifically, we are looking into adding "normal" FullHD resolution (1920x1080)
> to guests. 
> 
> At the moment, we do this by adding another vGPU type. This is certainly
> possible, but it seems a more flexible approach is to give the VMM control over
> the EDID information exposed to guests.

qemu -device vfio-pci,xres=1920,yres=1080,... should do exactly that and
should work with new enough qemu and kernel (was merged upstream roughly
a year ago IIRC).

> Is there anything that speaks against uploading the EDID from the VMM?

No ;)

cheers,
  Gerd