Re: [Qemu-devel] vga-pci and MMIO BAR

[Benjamin Herrenschmidt]

On Mon, 2012-08-06 at 14:03 +0200, Gerd Hoffmann wrote:
> Hacked up something like that a while back (patch attached).  Doesn't
> use DRM though, just plain old fbdev.  Maybe you can reuse some bits
> nevertheless.
> 
> /me wonders what the advantage of using drm is for non-3D hardware?

Thanks. Yeah fbdev is easier, but drm makes fedora happy :-)

Also makes things easier to support RandR in X nowadays using KMS APIs
etc... Besides I have evil plans to look at piping GL through the virtio
tube :-)

In fact, I've changed my focus and am now working on a virtio-vga (ie
new device). It still does VBE/VGA legacy (so the BIOS stuff works
etc...), but has BAR 0 as a virtio BAR on which I added a FB BAR.

I'll post more when I have more to show, I'm juggling with many
different things at the moment so it will take time.

Cheers,
Ben.