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RE: [Xen-users] smp in xen

To: "phcolaris" <phcolaris@xxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-users] smp in xen
From: "Petersson, Mats" <Mats.Petersson@xxxxxxx>
Date: Mon, 19 Mar 2007 12:17:15 +0100
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Thread-topic: [Xen-users] smp in xen
 

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of phcolaris
> Sent: 19 March 2007 08:15
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] smp in xen
> 
> hi all,
> 
> am I right that xen doesn't have support of smp in fully virtualized
> system?

That's not right. Fully virtualized system can run any number of CPU's
from 1 to 32. 
> 
> If I want to split 4cpu machine that some domU should have 
> access to all
> cpus and some to just some, I have to use the paravirtual mode only,
> right?

No, you can use either PV or HVM mode for any of those guest (any mix
you like - 1 CPU PV, 2 CPU HVM and a second 2CPU PV for example - or if
you like to show someone your mega-machine without actually having one,
try setting VCPUS=16 in your config file for a HVM guest, and show them
the task-manager or "cat /proc/cpuinfo" - it will look like you have 16
CPU's). 

--
Mats
> 
> thanks for clarification
> -ph
> 
> 
>       
>       
>               
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