linux-kernel - Re: [PATCH 0/2] x86: per-device dma_mapping

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Message-ID: <20080515153254.GI6778@il.ibm.com>
Date:	Thu, 15 May 2008 18:32:54 +0300
From:	Muli Ben-Yehuda <muli@...ibm.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	alexisb@...ibm.com
Subject: Re: [PATCH 0/2] x86: per-device dma_mapping_ops

On Thu, May 15, 2008 at 12:48:04PM +0200, Andi Kleen wrote:
> 
> > I thought that KVM people want to do it per device (in the first
> > case). So with my patchse, they can replace the dma_ops pointer in
> > dev_archdata with what they want.
> 
> But where would they save the original pointer?

See my other mail on this subject, we don't need the original pointer,
we just use stackable ops as a poor man's replacement for per-device
ops.

Cheers,
Muli
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