linux-kernel - Re: [RFC 3/3] mm: iommu: The Virtual Contiguous Memory Manager

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Message-ID: <1278012503.7738.17.camel@c-dwalke-linux.qualcomm.com>
Date:	Thu, 01 Jul 2010 12:28:23 -0700
From:	Daniel Walker <dwalker@...eaurora.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>,
	Zach Pfeffer <zpfeffer@...eaurora.org>, mel@....ul.ie,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC 3/3] mm: iommu: The Virtual Contiguous Memory Manager

On Thu, 2010-07-01 at 20:02 +0200, Andi Kleen wrote:
> > What license (name/type) is this?
> 
> IANAL, but AFAIK standard wisdom is that "disclaimer in the documentation
> and/or other materials provided" is generally not acceptable for Linux
> because it's an excessive burden for all distributors.

It's the BSD license ..

> Also for me it's still quite unclear why we would want this code at all...
> It doesn't seem to do anything you couldn't do with the existing interfaces.

I don't know all that much about what Zach's done here, but from what
he's said so far it looks like this help to manage lots of IOMMUs on a
single system.. On x86 it seems like there's not all that many IOMMUs in
comparison .. Zach mentioned 10 to 100 IOMMUs ..

Daniel

-- 
Sent by a consultant of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.

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