linux-kernel - RE: [ANNOUNCE] iommu-2.6.git tree

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Message-Id: <20081021085211D.fujita.tomonori@lab.ntt.co.jp>
Date:	Tue, 21 Oct 2008 08:51:44 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	fenghua.yu@...el.com
Cc:	fujita.tomonori@....ntt.co.jp, joro@...tes.org,
	dwmw2@...radead.org, mingo@...e.hu,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	tony.luck@...el.com, suresh.b.siddha@...el.com,
	sfr@...b.auug.org.au, andreas.herrmann3@....com,
	joseph.cihula@...el.com, akpm@...ux-foundation.org,
	jbarnes@...tuousgeek.org, tglx@...utronix.de,
	torvalds@...ux-foundation.org
Subject: RE: [ANNOUNCE] iommu-2.6.git tree

On Mon, 20 Oct 2008 11:06:15 -0700
"Yu, Fenghua" <fenghua.yu@...el.com> wrote:

> >IA64 and PARISC uses the same IOMMU hardware but they duplicate the
> >driver for them (the drivers are very similar). Calgary and POWER also
> >have similar IOMMU drivers. But I don't think it's worth merging them.
> 
> If you are talking about IA64 HP ZX1, then it does have same IOMMU hardware as PARISC.

Yeah, I was talking about SBA.


> But now David is pushing Intel VT-d IOMMU code for IA64. The
> hardware and driver are different from HP or PARISC. The hardware is
> same as x86 VT-d and the driver is ported from x86 IOMMU driver.

Yeah, I know that.

I just tried to point out that there is no cross-platform
(architecture independent) IOMMU stuff and David's new git tree should
be VT-d git tree, not a tree for architecture independent IOMMU stuff.
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