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] Question on RHEL 6 support

To: Alok Sinha <aksinha@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Question on RHEL 6 support
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Thu, 20 Oct 2011 17:00:56 +0300
Cc: "Xen-devel@xxxxxxxxxxxxxxxxxxx" <Xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Thu, 20 Oct 2011 07:12:56 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <2A0F5C7D-EAE0-46A2-8A8C-437B1FEE5B1F@xxxxxxxxxxxxx>
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: <2A0F5C7D-EAE0-46A2-8A8C-437B1FEE5B1F@xxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.5.18 (2008-05-17)
On Thu, Oct 20, 2011 at 04:18:07PM +0530, Alok Sinha wrote:
>    Hi,

Hello,

>       I am trying to run RHEL 6 as guest over XEN (RHEL 5.6 as host)
>    hypervisor.
>       It seems that RHEL 6 loads the paravirt drivers by default and thus HVM
>    mode is not working.
>       Any idea on this?

What do you mean with "HVM mode is not working" ?

PVHVM drivers (for HVM guests) are there to make disk/net performance a LOT 
better!
The default qemu-dm emulated ide controller and realtek nic are not very 
efficient..

>       I saw somewhere that including xen_emul_unplug=never will help. Is
>    there any other way it can be avoided?
>

You can also disable the xen platform pci device for that VM from dom0, 
then the VM will not activate PVHVM drivers.

-- Pasi


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