linux-kernel - Re: [PATCH 4/7] swiotlb: Allow arch override of address_needs

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Message-ID: <20090408203823.GA14985@infradead.org>
Date:	Wed, 8 Apr 2009 16:38:23 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Kumar Gala <galak@...nel.crashing.org>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, jeremy@...p.org,
	fujita.tomonori@....ntt.co.jp, ian.campbell@...rix.com,
	beckyb@...nel.crashing.org
Subject: Re: [PATCH 4/7] swiotlb: Allow arch override of
	address_needs_mapping

On Wed, Apr 08, 2009 at 09:09:18AM -0500, Kumar Gala wrote:
> From: Becky Bruce <beckyb@...nel.crashing.org>
> 
> Some architectures require additional checking to determine
> if a device can dma to an address and need to provide their
> own address_needs_mapping..

Shouldn't we just move it completely to the arch?  I think that ia64 and
x86 currently use the same one is more of an accident.

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