Re: [PATCH] Add virtio gpu driver.

[Gerd Hoffmann <kraxel@redhat.com>]

  Hi,

> BTW can we teach virtio-gpu to look for framebuffer using
> virtio pci caps?

The virtio-gpu driver doesn't matter much here, it doesn't use it
anyway.

>  Or are there limitations such as only
> using IO port BARs, or compatibility with
> BIOS code etc that limit us to specific BARs anyway?

Yes, vgabios code needs to know.  Currently it has bar #2 for the vga
framebuffer bar hardcoded.  It's 16bit code.  I don't feel like making
the probing more complicated ...

cheers,
  Gerd