linux-kernel - Re: [patch 5/8] [Intel IOMMU] Graphics driver workarounds to provide unity map

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Message-ID: <20070410083351.GA19691@infradead.org>
Date:	Tue, 10 Apr 2007 09:33:51 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Ashok Raj <ashok.raj@...el.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, ak@...e.de,
	gregkh@...e.de, muli@...ibm.com, asit.k.mallick@...el.com,
	suresh.b.siddha@...el.com, anil.s.keshavamurthy@...el.com,
	arjan@...ux.intel.com, shaohua.li@...el.com
Subject: Re: [patch 5/8] [Intel IOMMU] Graphics driver workarounds to provide unity map

On Mon, Apr 09, 2007 at 02:55:57PM -0700, Ashok Raj wrote:
> Most GFX drivers don't call standard PCI DMA APIs to allocate DMA buffer,
> Such drivers will be broken with IOMMU enabled. To workaround this issue, 
> we added two options.

All drm drivers do it.  If the usual out of tree crap vendors are too
stupid for their own sake it's their fault.

So NACK to this patch.

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