KVM: 0.977
kernel: 0.911
virtual: 0.793
debug: 0.682
device: 0.674
graphic: 0.650
semantic: 0.648
architecture: 0.609
hypervisor: 0.596
mistranslation: 0.550
boot: 0.393
performance: 0.348
arm: 0.342
ppc: 0.301
permissions: 0.248
risc-v: 0.225
PID: 0.193
i386: 0.188
register: 0.175
x86: 0.151
vnc: 0.147
network: 0.119
peripherals: 0.074
user-level: 0.069
TCG: 0.033
files: 0.027
socket: 0.025
VMM: 0.008
assembly: 0.005

custom kernel give me KVM internal error. Suberror: 4