architecture: 0.699
peripherals: 0.614
device: 0.441
performance: 0.382
VMM: 0.266
graphic: 0.215
mistranslation: 0.210
hypervisor: 0.202
risc-v: 0.182
arm: 0.173
x86: 0.166
TCG: 0.158
boot: 0.157
KVM: 0.143
debug: 0.138
vnc: 0.131
ppc: 0.130
i386: 0.126
network: 0.113
PID: 0.082
semantic: 0.071
virtual: 0.066
socket: 0.034
kernel: 0.027
assembly: 0.023
permissions: 0.013
register: 0.013
user-level: 0.006
files: 0.001

how to implement a heterogeneous machine(several sysbus/mem map)?