On 07/25/12 05:57, Benjamin Herrenschmidt wrote:
> Hi folks !
> 
> Would there be any objection to adding a second MMIO BAR to qemu-vga
> which mirrors the bochs magic VBE ports ?

No.

> Once done, I'd like to look into doing a qemudrmfb similar to the cirrus
> one that pretty much gives you generic KMS support (with RandR) on top
> of vga-pci. This would have the advantage of potentially lifting the
> pitch and size limitations that plague cirrus.

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?

cheers,
  Gerd