No paravirt for KVM
There are two major categories of x86 virtualisation; separate and shared kernel. Separate kernel virtualisation provides greater isolation at the expense of a small virtualisation overhead. Shared kernel virtualisation reduces the overhead required to provide containerised operating systems but with fewer barriers between …
AFAIK, KVM only supports hardware-assisted full virtualisation. While the paravirtualisation is being worked on, my understanding was that this had yet to be fully incorporated into the mainline.
I honestly can’t recall with 100% clarity, but I believe that the paravirtualisation was being talked about for inclusion in RHEL 6. We aren’t there yet; it’s still in beta.