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Message-ID: <20090618181337.GA2500@x200.localdomain>
Date: Thu, 18 Jun 2009 11:13:37 -0700
From: Chris Wright <chrisw@...hat.com>
To: Muli Ben-Yehuda <muli@...ibm.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>,
David Woodhouse <dwmw2@...radead.org>,
"'Linus Torvalds'" <torvalds@...ux-foundation.org>,
"'Stephen Rothwell'" <sfr@...b.auug.org.au>,
"'Andrew Morton'" <akpm@...ux-foundation.org>,
"'Ingo Molnar'" <mingo@...e.hu>,
"'Christopher Wright'" <chrisw@...hat.com>,
"'Allen Kay'" <allen.m.kay@...el.com>,
"'lkml'" <linux-kernel@...r.kernel.org>,
"'iommu'" <iommu@...ts.linux-foundation.org>
Subject: Re: [PATCH 1/2] IOMMU Identity Mapping Support:
iommu_identity_mapping definition
* Muli Ben-Yehuda (muli@...ibm.com) wrote:
> On Thu, Jun 18, 2009 at 11:05:14AM -0700, Fenghua Yu wrote:
>
> > IOMMU Identity Mapping Support: iommu_identity_mapping definition
> >
> > Identity mapping for IOMMU defines a single domain to 1:1 map all
> > pci devices to all usable memory.
>
> Why use VT-d at all in this case? Do you have a use-case in mind?
Device assignment.
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