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] DQ35JO (Q35 chipset), Q6600, xen-unstable (~12/21), RMRR

To: "Peter J. van der Maas" <peter@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] DQ35JO (Q35 chipset), Q6600, xen-unstable (~12/21), RMRR/DMAR error
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Tue, 23 Dec 2008 08:45:08 +0000
Cc:
Delivery-date: Tue, 23 Dec 2008 00:45:06 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <7EEC9DAC2502EF4FACFE8CC8408DAFEA1DEDAF@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/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AclkuulT67D0Yx1CQyac2/KoSAle3gAH9jV0
Thread-topic: [Xen-devel] DQ35JO (Q35 chipset), Q6600, xen-unstable (~12/21), RMRR/DMAR error
User-agent: Microsoft-Entourage/12.14.0.081024
You could remove the check at the top of acpi_parse_one_rmrr() in xen/drivers/passthrough/vtd/dmar.c and then cross your fingers. It depends just how broken the BIOS tables are.

 -- Keir

On 23/12/2008 05:29, "Peter J. van der Maas" <peter@xxxxxxxxx> wrote:

Purchased DQ35JO on Vt-d/PCI passthrough wiki’s recommendations.  Built latest xen-unstable and am getting the following via ‘xm dmesg’:
 
(XEN) [VT-D]dmar.c:374: RMRR error: base_addr d0000000 end_address cfffffff
(XEN) Failed to parse ACPI DMAR.  Disabling VT-d.
 
 
My grub.conf looks like this:
 
       kernel /xen.gz vga=mode-0x0317 vtd=1 iommu=1
       module /vmlinuz-2.6.18.8-xen ro root=/dev/XenVolGroup/LogVolXenDom0 rhgb quiet pciback.hide=(01:00.0)
       module /initrd-2.6.18-xen.img
 
I found a similar post from a user that had same problem with same board after updating his BIOS to v954.  Not sure I want to lose the functionality the update BIOS gives me.  Any fixes or workarounds?
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
<Prev in Thread] Current Thread [Next in Thread>