device: 0.795 permissions: 0.732 PID: 0.673 performance: 0.651 vnc: 0.629 graphic: 0.603 socket: 0.602 network: 0.589 files: 0.564 semantic: 0.555 debug: 0.467 other: 0.403 KVM: 0.318 boot: 0.276 target-arm/op_helper.c:424: bad assert /home/dcb/qemu/trunk/qemu/target-arm/op_helper.c: In function ‘helper_access_check_cp_reg’: /home/dcb/qemu/trunk/qemu/target-arm/op_helper.c:424:52: error: comparison of constant ‘3’ with boolean expression is always false [-Werror=bool-compare] assert(!arm_is_secure(env) && !arm_current_el(env) == 3); ^ Maybe assert(!arm_is_secure(env) && arm_current_el(env) != 3); Fixed by commit 3fc827d591679f3e262b9d1f8b34528eabfca8c0