[Fedora-xen] # of processors on dom0

[Jordi Prats <jprats cesca es>]

Hi all,
This is a really simple question, but I can't find how to do it using yum.

I have a dual core system, but my Fedora Core 6 is only showing me one
processor (cat /proc/cpuinfo)

How can I install a Xen dom0 with smp support using yum?

Thank you!
Jordi