device: 0.711
arm: 0.478
network: 0.383
semantic: 0.344
mistranslation: 0.344
performance: 0.323
kernel: 0.236
graphic: 0.178
socket: 0.173
architecture: 0.165
boot: 0.163
ppc: 0.157
risc-v: 0.132
peripherals: 0.107
i386: 0.099
user-level: 0.091
vnc: 0.081
virtual: 0.074
files: 0.068
register: 0.060
hypervisor: 0.059
assembly: 0.055
PID: 0.052
TCG: 0.049
debug: 0.037
VMM: 0.020
x86: 0.010
permissions: 0.007
KVM: 0.001

Avoid using error_setg(&error_fatal, ...)  in the QEMU sources