Open Stack

Hi all,
first of thank you very much for your support.

Right now I have a fedora 16 with xen (NOT XCP), that is, I have 
installed those package:

xen-licenses-4.1.2-7.fc16.x86_64
xen-hypervisor-4.1.2-7.fc16.x86_64
xen-runtime-4.1.2-7.fc16.x86_64
netxen-firmware-4.0.534-4.fc15.noarch
xen-libs-4.1.2-7.fc16.x86_64
xen-4.1.2-7.fc16.x86_64

and xen seems happy:

[mex at minicloud03 ~]$ sudo xm info
[sudo] password for mex:
host                   : minicloud03.di.unipmn.it
release                : 3.3.7-1.fc16.x86_64
version                : #1 SMP Tue May 22 13:59:39 UTC 2012
machine                : x86_64
nr_cpus                : 4
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 2400
hw_caps                : 
bfebfbff:20100800:00000000:00000940:0000e3bd:00000000:00000001:00000000
virt_caps              : hvm
total_memory           : 4094
free_memory            : 717
free_cpus              : 0
xen_major              : 4
xen_minor              : 1
xen_extra              : .2
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 
hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
xen_commandline        : placeholder
cc_compiler            : gcc version 4.6.3 20120306 (Red Hat 4.6.3-2) (GCC)
cc_compile_by          : mockbuild
cc_compile_domain      : phx2.fedoraproject.org
cc_compile_date        : Mon May  7 23:28:57 UTC 2012
xend_config_format     : 4


Now the question is:
- Can I install openstack in this machine or I must use XCP?

Thanks,
  Massimo