guestfish/libguestfs takes legacy qemu instead of kvm?

guestfish takes legacy qemu instead of kvm? ]# rpm -q libguestfs --requires | fgrep qemu qemu-system-x86 >= 0.10.5 ]# rpm -q libguestfs guestfish libguestfs-1.2.3-1.el5 guestfish-1.2.3-1.el5 [@djt_10_48 ~]# guestfish -i kvm-rhel5guest Could not open '/dev/kqemu' - QEMU acceleration layer not activated: No such file or directory How can I let guestfish/libguestfs takes kvm? Regards Kirby Zhou