linux-kernel - Re: [Intel-IOMMU 01/10] DMAR detection and parsing logic

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Message-ID: <20070604225820.GA9948@linux-os.sc.intel.com>
Date:	Mon, 4 Jun 2007 15:58:21 -0700
From:	"Keshavamurthy, Anil S" <anil.s.keshavamurthy@...el.com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	anil.s.keshavamurthy@...el.com, linux-kernel@...r.kernel.org,
	akpm@...l.org, ak@...e.de, gregkh@...e.de, muli@...ibm.com,
	asit.k.mallick@...el.com, suresh.b.siddha@...el.com,
	arjan@...ux.intel.com, ashok.raj@...el.com, shaohua.li@...el.com,
	davem@...emloft.net
Subject: Re: [Intel-IOMMU 01/10] DMAR detection and parsing logic

On Mon, Jun 04, 2007 at 06:54:21PM -0400, Jeff Garzik wrote:
> On Mon, Jun 04, 2007 at 02:02:43PM -0700, anil.s.keshavamurthy@...el.com wrote:
> > --- linux-2.6.22-rc3.orig/drivers/pci/Makefile	2007-06-04 12:28:13.000000000 -0700
> > +++ linux-2.6.22-rc3/drivers/pci/Makefile	2007-06-04 12:33:15.000000000 -0700
> > @@ -20,6 +20,9 @@
> >  # Build the Hypertransport interrupt support
> >  obj-$(CONFIG_HT_IRQ) += htirq.o
> >  
> > +# Build Intel IOMMU support
> > +obj-$(CONFIG_DMAR) += dmar.o
> 
> It's not Intel IOMMU support though, is it?
Yes, it is Intel IOMMU support.

> 
> It's x86 PCI IOMMU support (as opposed to x86 GART IOMMU).
> 
> I just want to avoid Intel branding on something that will not be
> specific to Intel-manufacured products in the long term.

This DMAR (DMA Remapping unit) is Intel specific and
its spec is available at www.intel.com/technology/virtualization

-Anil
-
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