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Subject: Re: [PATCH 1/5]: drm: ati_pcigart: Do not access I/O MEM space
 using  pointer derefs.
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Dave Airlie <airlied@gmail.com>
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       dri-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
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> The only think I can think to do is use a surface instead of the
> aperture swappers
> and make the surface cover all the VRAM except the GART table which is
> at the end.

Why not use a surface to cover the GART ? At least this would ensure a
known swapper setting for it. 

> That's interesting, it could explain why things never work again after a reset
> or at least proceed to hang straight away.

No shit :-)

Cheers,
Ben.