[Intel-gfx] [PATCH] iommu/intel: disable DMAR for g4x integrated gfx

[David Woodhouse]

On Sun, 2013-01-20 at 23:50 +0100, Daniel Vetter wrote:
> DMAR support on g4x/gm45 integrated gpus seems to be totally busted.
> So don't bother, but instead disable it by default to allow distros to
> unconditionally enable DMAR support.

Acked-By: David Woodhouse <David.Woodhouse at intel.com>

It *really* winds me up that we never bother to test this hardware
before we ship it.

But I'm even *more* disappointed that we can't even diagnose it and
publish coherent errata *after* the fact. I'd really like to see each
quirk which disables features referencing a specific published erratum.
We really ought to be able to manage at least *that* much.

Rajesh?

-- 
dwmw2

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