From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Williamson <alex.williamson@redhat.com>
Subject: Re: AMD integrated graphics passthrough to KVM guest
Date: Sun, 14 Jul 2013 21:21:55 -0600
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To: Gustav Sorenson <gu.sorenson@gmail.com>
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On Sat, 2013-07-13 at 21:45 +0200, Gustav Sorenson wrote:
> Hello Alex,
> 
> I'm thinking about buying a HD 7850 to go with my integrated graphics
> card, so that I can pass the 7850 to a KVM guest and keep the
> integrated GPU for the host. However, I'd like to use the proprietary
> AMD drivers for the host to get reasonable 3D performance there (the
> open source driver that ships with Mint 15 didn't get me far; maybe it
> should and I've done something wrong?). I've read here:
> https://bbs.archlinux.org/viewtopic.php?pid=1273412#p1273412
> that this scenario caused problems. Is this still the case?

That's actually the first I've heard of that problem.  I don't see why
it wouldn't still be the case, fglrx is broken if that report is
accurate.

> Which GPU do you use on the host / guest, and which driver combinations work?

I'm not a good example, I don't do anything on the host VGA at all.

> Or should I just grab an nVidia instead?

If you plan to run fglrx in the host, it would certainly help to work
around the above issue, but I don't have much direct experience with
anything newer than an 8400GS.

> Of course I'd be happy to hear reports from others as well. :)

Yep, I'm astonished at the number of users trying to make this work.
I'm sure someone has some knowledge they can share.  Thanks,

Alex