WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] DL385 G2 - PCI-DMA: Random memory would be DMAed

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] DL385 G2 - PCI-DMA: Random memory would be DMAed
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Fri, 19 Oct 2007 00:54:59 +0100
Cc: "Langsdorf, Mark" <mark.langsdorf@xxxxxxx>, Zachary Richmond <admin.ihsdoor@xxxxxxxxx>
Delivery-date: Thu, 18 Oct 2007 16:55:46 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <1449F58C868D8D4E9C72945771150BDF020770A6@xxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <4717C238.9060106@xxxxxxxxx> <1449F58C868D8D4E9C72945771150BDF020770A6@xxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: KMail/1.9.6
Thanks for chiming in Mark, I was at a loss to suggest something specific!

> For some reason, your kernel is running with pci-gart.c
> enabled, and dom0 is trying to allocate DMA through the
> AGP GART in your AMD64 processor's Northbridge.  I
> didn't think Xen supported pci-gart, but maybe I missed
> a changeset.

Maybe a Gentoo-specific patch?

> At any rate, passing iommu=soft should disable the pci-gart
> and allow you to use bounce buffering.  Hopefully, that
> should clear up your problem.

If it does fix it, I'd suggest reporting it to the package maintainer.

Cheers,
Mark

-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel