$ su -
$ cd /usr/src
$ hg clone http://xenbits.xensource.com/xen-3.4-testing.hg
$ cd xen-3.4-testing.hg
$ make world
$ make install
$ ./install.sh
* eth0 is not detected with this kernel at this point.
So, I have to build the kernel…
Reference: http://bderzhavets.wordpress.com/2009/04/17/setup-xen-34-centos-53-dom0-64-bit/
