device: 0.850 files: 0.800 socket: 0.788 semantic: 0.752 network: 0.711 vnc: 0.656 PID: 0.622 performance: 0.572 debug: 0.556 graphic: 0.523 permissions: 0.510 other: 0.466 boot: 0.441 KVM: 0.288 target-mips/helper.c:542: bad sizeof ? Recent versions of gcc say this: qemu/target-mips/helper.c:542:9: warning: ‘memset’ used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size] Source code is memset(env->CP0_WatchLo, 0, sizeof(*env->CP0_WatchLo)); Maybe better code memset(env->CP0_WatchLo, 0, 8 * sizeof(target_ulong)); Fix has been included here: http://git.qemu.org/?p=qemu.git;a=commitdiff;h=9d989c732b153fe15