I just released virt-what 1.1. This program is a collection of code snippets to allow you to determine what sort of virtualization you are running inside.
The new version can tell the difference between QEMU and KVM, and can tell if you are running inside a Xen fullvirt guest.
Home page: http://et.redhat.com/~rjones/virt-what/ Downloads: http://et.redhat.com/~rjones/virt-what/files/ Repository: http://git.et.redhat.com/?p=virt-what.git;a=summary
Rich.