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

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] Question on RHEL 6 support
From: Alok Sinha <aksinha@xxxxxxxxxxxxx>
Date: Thu, 20 Oct 2011 19:43:05 +0530
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Thread-topic: [Xen-devel] Question on RHEL 6 support

Sent from my iPhone

On 20-Oct-2011, at 7:32 PM, "Pasi Kärkkäinen" <pasik@xxxxxx> wrote:

> 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.
> 
> -- 

How? Is there cli/API?
Alok
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