linux-kernel - Re: [PATCH] add iommu_num

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Message-Id: <20080729104722H.fujita.tomonori@lab.ntt.co.jp>
Date:	Tue, 29 Jul 2008 10:46:31 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	sfr@...b.auug.org.au
Cc:	mingo@...e.hu, fujita.tomonori@....ntt.co.jp, joerg.roedel@....com,
	mingo@...hat.com, tglx@...utronix.de, linux-kernel@...r.kernel.org,
	iommu@...ts.linux-foundation.org, bhavna.sarathy@....com,
	robert.richter@....com
Subject: Re: [PATCH] add iommu_num_pages helper function

On Tue, 29 Jul 2008 11:07:49 +1000
Stephen Rothwell <sfr@...b.auug.org.au> wrote:

> Hi Ingo,
> 
> On Sat, 26 Jul 2008 15:41:56 +0200 Ingo Molnar <mingo@...e.hu> wrote:
> >
> > ok, i'll apply the 3 patches to tip/x86/iommu. As usual, feel free to 
> > send IOMMU cleanups/generalizations/fixes against tip/master:
> > 
> >   http://people.redhat.com/mingo/tip.git/README
> 
> So, I assume a patch created on July 25 is not destined for 2.6.27,

Hmm, seems that they will go into 2.6.27:

http://marc.info/?l=linux-kernel&m=121729275722287&w=2


> right?  Especially since it breaks another architecture build and has
> only made it to linux-next on July 29 ... and needs more work given the
> comments already on this patch.

It doesn't break another architecture build since only x86 IOMMUs use
the helper function. But as I pointed out, it doesn't work for some
architectures.
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