Re: [Xen-devel] Question on RHEL 6 support

[Pasi Kärkkäinen <pasik@xxxxxx>]

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


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