linux-kernel - Re: [PATCH 06/11] swiotlb: Store phys address in io_tlb_orig

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Message-Id: <20081222143507R.fujita.tomonori@lab.ntt.co.jp>
Date:	Mon, 22 Dec 2008 14:34:57 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	jeremy@...p.org
Cc:	beckyb@...nel.crashing.org, mingo@...e.hu,
	fujita.tomonori@....ntt.co.jp, linux-kernel@...r.kernel.org,
	ian.campbell@...rix.com, jbeulich@...ell.com, joerg.roedel@....com,
	benh@...nel.crashing.org
Subject: Re: [PATCH 06/11] swiotlb: Store phys address in io_tlb_orig_addr
 array

On Fri, 19 Dec 2008 09:39:58 -0800
Jeremy Fitzhardinge <jeremy@...p.org> wrote:

> Becky Bruce wrote:
> > When we enable swiotlb for platforms that support HIGHMEM, we
> > can no longer store the virtual address of the original dma
> > buffer, because that buffer might not have a permament mapping.
> > Change the iotlb code to instead store the physical address of
> > the original buffer.
> >   
> 
> Hm, yes, I think using a phys_addr_t may end up being cleaner than using 
> struct page *+offset.

Surely, cleaner and simpler. Can you please rework [PATCH 07/11] in
that way?
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