linux-kernel - Re: Question about iommu on x86

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Message-ID: <m2wrhf4sw5.fsf@firstfloor.org>
Date:	Tue, 24 May 2011 15:48:26 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Daniel Haid <d.haid@...i.tv>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: Question about iommu on x86_64 and radeon driver.

Daniel Haid <d.haid@...i.tv> writes:
>
> Unfortunately I am getting crashes with "iommu=allowed". I will look
> at git blame.

I added it originally. The VIA chipset seems to hang on most
DMAs through the IOMMU, so it was disabled.

-Andi

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