From mboxrd@z Thu Jan  1 00:00:00 1970
From: FUJITA Tomonori <tomof@acm.org>
Subject: Re: [PATCH 0/5] fix iommu sg list merge problem
Date: Wed, 26 Sep 2007 23:48:48 +0900
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On Wed, 26 Sep 2007 09:38:32 -0500
James Bottomley <James.Bottomley@SteelEye.com> wrote:

> On Wed, 2007-09-26 at 23:34 +0900, FUJITA Tomonori wrote:
> > Yeah, I thought about it and it's possible (but not so easy). parisc
> > has IOMMU merging helper code and two parisc IOMMUs use it. ia64
> > sba_iommu is almost identical to parisc code. x86_64 gart, power, and
> > alpha do in their own way. But I think that we can merging helper code
> > useful for all.
> 
> Er ... it should be identical ... the SBA iommu is the same ... I
> thought we moved the common code out to a shared file.

2.6.23-rc8-mm1 has two iommu_coalesce_chunks in
drivers/iommu-helpers.h and arch/ioa64/hp/common/sb_iommu.c

iommu_coalesce_chunks are almost same. parisc's iommu_coalesce_chunks
is simpler a bit.