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RE: [Xen-devel] Xen-3.2.1 VT-d Support (NOT SURE WHETHER IT'S A BUG OR...)

  • To: "Kumar, Venkat" <Venkat.Kumar@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>
  • Date: Tue, 5 Aug 2008 14:33:22 +0800
  • Cc:
  • Delivery-date: Mon, 04 Aug 2008 23:33:51 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acj2sq637CKyphjqRfGt8mb4jFUmeAAES2DQ
  • Thread-topic: [Xen-devel] Xen-3.2.1 VT-d Support (NOT SURE WHETHER IT'S A BUG OR...)

Hi Venkat,
Can you confirm you're using the latest BIOS? Can you try the xen 3.2.2-rc2 and the latest xen-unstable on the same host?
I have the similar host. Xen 3.2.2-rc2 and the latest xen-unstable both work well on it.

-- Dexuan

From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Kumar, Venkat
Sent: 2008年8月5日 12:21
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Xen-3.2.1 VT-d Support (NOT SURE WHETHER IT'S A BUG OR...)

After building Xen-3.2.1 I could successfully boot into it if I avoid giving vtd=1 as the boot parameter.

If I pass vtd=1 as the boot parameter to xen, the system hangs while booting.

The system hangs after the following messages


Boot messages


[Xen] Brought up 2 CPUs...


My chipset DQ35 series is having VT-d support and is enabled in the BIOS as well.

My domain0 is CentOS-5.2(

Is this a possible bug or some thing else??

Any Idea??



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