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Re: [Qemu-devel] vga-pci and MMIO BAR
From: |
Benjamin Herrenschmidt |
Subject: |
Re: [Qemu-devel] vga-pci and MMIO BAR |
Date: |
Tue, 07 Aug 2012 07:07:37 +1000 |
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.