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SubjectRe: [PATCH] Add virtio gpu driver.
On Wed, Mar 25, 2015 at 04:37:16PM +0100, Gerd Hoffmann wrote:
> 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

OK - you are saying all VGA cards use bar #2 for this
functionality, so we are just following
established practice here?

--
MST


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