Is there an equiv of Linux KVM for FreeBSD?

[Alfred Perlstein]

Is there an equivalent to Linux's "KVM" (Kernel Virtual Machine)
for FreeBSD?

For reference, it appears that Linux KVM's homepage is here:
http://www.linux-kvm.org/page/Main_Page

Specifically anything that allows QoS of percent of the host
machine's CPU to be allocated?

-- 
- Alfred Perlstein
.- AMA, VMOA #5191, 03 vmax, 92 gs500, 85 ch250
.- FreeBSD committer