user-level: 0.557
device: 0.545
performance: 0.535
graphic: 0.357
arm: 0.273
architecture: 0.255
mistranslation: 0.121
ppc: 0.107
PID: 0.096
boot: 0.095
permissions: 0.084
TCG: 0.064
semantic: 0.064
virtual: 0.060
VMM: 0.058
register: 0.049
network: 0.047
vnc: 0.033
files: 0.033
assembly: 0.030
debug: 0.027
socket: 0.024
risc-v: 0.021
i386: 0.020
hypervisor: 0.019
peripherals: 0.019
KVM: 0.012
x86: 0.009
kernel: 0.009

Atomic test-and-set instruction does not work on qemu-user