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] Vt-d not working with 3.4.1

To: "'enming.teo@xxxxxxxxxxxxxxx'" <enming.teo@xxxxxxxxxxxxxxx>, "'pasik@xxxxxx'" <pasik@xxxxxx>
Subject: RE: [Xen-devel] Vt-d not working with 3.4.1
From: "Han, Weidong" <weidong.han@xxxxxxxxx>
Date: Wed, 19 Aug 2009 21:15:21 +0800
Accept-language: en-US
Acceptlanguage: en-US
Cc: "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "'Bonenkamp, Ralf'" <ralf.bonenkamp@xxxxxxxx>
Delivery-date: Wed, 19 Aug 2009 06:18:54 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <4A8BDE6E.6060804@xxxxxxxxxxxxxxx>
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: <20090819092654.GN19938@xxxxxxxxxxxxxxx> <FA2BB24021774A8B894CE6721837D720@ASOITIS16> <20090819102014.GO19938@xxxxxxxxxxxxxxx> <4A8BDE6E.6060804@xxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcogviaLmmw7pLW9ST2hdrDGs1QHXAAEHK/A
Thread-topic: [Xen-devel] Vt-d not working with 3.4.1
Mr. Teo En Ming (Zhang Enming) wrote:
> Dear Pasi,
> 
> I suspect that there may be some problems with the Xen 3.4.1
> changeset of 6 August 2009. 
> 
> The bzImage kernel image that I compiled is not a bzip2 file, hence I
> cannot bzcat it. If I tried to do so, it will complain that it is not
> a bzip2 file.  
> 
> I did specify the following in my kernel configuration:
> 
> CONFIG_HAVE_KERNEL_BZIP2=y
> CONFIG_KERNEL_BZIP2=y
> CONFIG_RD_BZIP2=y
> CONFIG_DECOMPRESS_BZIP2=y
> 
> When I do a "xm dmesg" command, I see the following output:
> 
> (XEN) Intel VT-d DMAR tables have been parsed.
> (XEN) Intel VT-d Snoop Control not supported.
> (XEN) Intel VT-d DMA Passthrough not supported.
> (XEN) Intel VT-d Queued Invalidation not supported.
> (XEN) Intel VT-d Interrupt Remapping not supported.
> (XEN) I/O virtualisation enabled
> (XEN) I/O virtualisation for PV guests disabled
> 
> So can I confirm that I have VT-d support enabled?
> 

Yes, "(XEN) I/O virtualisation enabled" means VT-d is enabled. 

> (XEN) Intel VT-d Snoop Control not supported.
> (XEN) Intel VT-d DMA Passthrough not supported.
> (XEN) Intel VT-d Queued Invalidation not supported.
> (XEN) Intel VT-d Interrupt Remapping not supported.

Above messages mean those VT-d features are not supported, it may be they are 
not available or disabled explicitly by 'iommu' parameter. Here, obviously your 
platform doesn't support those features.

Regards,
Weidong


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

<Prev in Thread] Current Thread [Next in Thread>