In case you do not know yet: there is no virtualisation support in Fedora 21 on APM Mustang. Looks like one of 3.18-rc commits went into 3.17/stable tree and disabled it for us.

Added into to https://bugzilla.redhat.com/show_bug.cgi?id=1165290

[root@pinkiepie virt]# LC_ALL=C virsh create hrw-f21.xml error: Failed to create domain from hrw-f21.xml error: unsupported configuration: Domain requires KVM, but it is not available. Check that virtualisation is enabled in the host BIOS, and host configuration is setup to load the kvm modules.

[root@pinkiepie virt]# dmesg|grep -i kvm [ 0.303959] kvm [1]: GICV size 0x2000 not a multiple of page size 0x10000 [ 0.303965] kvm [1]: error: no compatible GIC info found [ 0.304070] kvm [1]: error initializing Hyp mode: -6 [root@pinkiepie virt]# uname -a Linux pinkiepie 3.17.4-301.fc21.aarch64 #1 SMP Sun Nov 30 20:41:43 UTC 2014 aarch64 aarch64 aarch64 GNU/Linux