Reserve CPU cores for specific guests?

["Neil Aggarwal" <neil@JAMMConsulting.com>]

Hello:

I don't think there is a way to do this with KVM, but
I figured I would ask:

I want to be able to offer virtual private servers (VPSs)
to clients.  I am going to use KVM for it.

I would like to offer clients the option to buy either:
1. A VPS which allows CPUs to be overcommitted.
2. A VPS with a dedicated CPU core.

So, for example, if I have a six core opteron, I might
sell:
2 VPSs with a dedicated CPU core
6 VPSs which allow overcommitted CPUs

Since I need one core for the hypervisor, there would
need to be a way to say that it gets a dedicated core
plus the other 2 VPSs get a dedicated core.  That
leaves 3 pooled cores to serve the 6 VPSs that 
are allowed to overcommit.

Is there a way to set up a pooled set of cores
for a given list of VPSs?  

I think I may have to use separate physical machine
for the VPSs with dedicated cores and the ones with
overcommitted ones.

Thanks,
	Neil

--
Neil Aggarwal, (281)846-8957, http://www.JAMMConsulting.com
CentOS 5.4 KVM VPS $55/mo, no setup fee, no contract, dedicated 64bit CPU
1GB dedicated RAM, 40GB RAID storage, 500GB/mo premium BW, Zero downtime