So first of all, if you've used the CBS before, please note the name change -- it's no longer virt6-testing, but virt6-xen-44-testing. Easiest way to install: rpm -ivh http://cbs.centos.org/repos/virt6-xen-44-testing/x86_64/os/Packages/centos-release-xen-7-7.el6.x86_64.rpm This will set up yum repositories for both the eventual release repositories (enabled by default), and the community build system repositories (disabled by default). At the moment, all packages will be stored in the virt-xen-44-testing repository. You can either enable this by default by editing /etc/yum.repos.d/VirtSIG-Xen.repo, or by adding "--enablerepo=virt-xen-44-testing". If you want, you can edit defaults /etc/sysconfig/xen-kernel Next, run 'yum update' to get the new kernel: yum --enablerepo=virt-xen-44-testing update kernel Now install xen: yum --enablerepo=virt-xen-44-testing install xen This should grab both xen and the updated kernel package. It should also automatically: * Add default commandline parameters for Xen and Linux when booting under Xen * Arrange for xen to come up first in the grub * Set the default boot entry to Xen. That's it! Reboot and you should be good to go. Libvirt packages haven't been rebuilt -- not sure if they work or not. If they don't, let me know and I'll re-submit them.. Please report any problems or feedback to this list. -George