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] Fixed: RMRR is incorrect (was: VT-d does not work any mo

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Fixed: RMRR is incorrect (was: VT-d does not work any more after BIOS update on DQ35MP)
From: "Ralf Hornik Mailings" <ralf@xxxxxxxxxxxxxxxxx>
Date: Wed, 26 Nov 2008 10:59:18 +0100
Delivery-date: Wed, 26 Nov 2008 01:59:20 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <492C5664.9070600@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>
References: <C55187DE.295D1%keir.fraser@xxxxxxxxxxxxx> <22584271-9C2A-400A-8AFE-6ADEF231D8AE@xxxxxxxxx> <492C5664.9070600@xxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Internet Messaging Program (IMP) H3 (4.2)
"Ralf Hornik Mailings" <ralf@xxxxxxxxxxxxxxxxx> schreibte:

Finally, I downgraded to the second previous bios version and now VT-d works again.

Another issue I figured out (bios independend) is a page fault when booing xen 3.3/unstable with vtd anabled:

(XEN) Brought up 4 CPUs
(XEN) I/O virtualisation enabled
(XEN) I/O virtualisation for PV guests disabled
(XEN) [VT-D]iommu.c:747: iommu_page_fault: iommu->reg = ffff828bfff56000
(XEN) [VT-D]iommu.c:716: iommu_fault_status: Fault Overflow
(XEN) [VT-D]iommu.c:701: iommu_fault:DMA Write: 0:2.0 addr ffffff000 REASON 5 iommu->reg = ffff828bfff56000
(XEN) print_vtd_entries: iommu = ffff83007c20d010 bdf = 0:2:0 gmfn = ffffff
(XEN)     root_entry = ffff83007a4d3000
(XEN)     root_entry[0] = 7d060001
(XEN)     context = ffff83007d060000
(XEN)     context[10] = 101_7bff9001
(XEN)     l3 = ffff83007bff9000
(XEN)     l3_index = 3f
(XEN)     l3[3f] = 0
(XEN)     l3[3f] not present

What does this mean? However, I do not encounter any relating problems yet...
Regards


Ralf



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