graphic: 0.991
device: 0.799
performance: 0.647
peripherals: 0.338
risc-v: 0.285
mistranslation: 0.279
network: 0.273
architecture: 0.222
hypervisor: 0.180
arm: 0.139
permissions: 0.127
boot: 0.108
VMM: 0.108
files: 0.107
debug: 0.075
register: 0.072
user-level: 0.071
semantic: 0.068
virtual: 0.066
kernel: 0.052
PID: 0.048
assembly: 0.046
vnc: 0.044
ppc: 0.038
TCG: 0.031
socket: 0.027
x86: 0.014
KVM: 0.013
i386: 0.010

qemu-riscv64 mmap  will exhaust all physical memory