linux-kernel - Re: [PATCH] intel-iommu: use coherent_dma_mask in alloc

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Message-Id: <1224487262.6770.1505.camel@macbook.infradead.org>
Date:	Mon, 20 Oct 2008 08:21:02 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	mgross@...ux.intel.com, mingo@...e.hu, grundler@...isc-linux.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] intel-iommu: use coherent_dma_mask in alloc_coherent

On Mon, 2008-10-20 at 09:46 +0900, FUJITA Tomonori wrote:
> > I've fixed this up to cope with the fact that dma_mask can be bigger
> > than an 'unsigned long', and committed it to the iommu-2-6.git tree.
> 
> Hmm, 'unsigned long' is 64 bits on IA64 and X86_64. How can dma_mask
> be bigger than an 'unsigned long'?

On i386.

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse@...el.com                              Intel Corporation

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