Power8 server is capable of running in either PowerVM or PowerKVM hypervisor mode. USer would have to change firmware on machine to run in specific Hypervisor mode. PowerKVM runs on OPAL firmware.
1) Open ASM
2) User need to power off machine before changing Hypervisor mode.
3) System Configuration -> Firmware Configuration. Change Firmware to OPAL to run in on PowerKVM mode. Or PowerVM to run on PowerVM mode.
4) Power on your machine and start using in PowerKVM mode.