CentOS7 + SELinux

It just dawned on me that now with my VM on KVM rather than Xen, I should have SELinux support now correct?

If so, what would be the proper way to install the necessary packages? I know that stock RHEL and CentOS installs have it there, but not sure about what packages are needed to get there on Linode's custom image.

Thanks much!

Andrew.