device: 0.839
instruction: 0.634
graphic: 0.268
mistranslation: 0.184
semantic: 0.116
boot: 0.101
network: 0.092
assembly: 0.073
socket: 0.046
other: 0.016
vnc: 0.014
KVM: 0.002

How to create Rootfs for sifive_u machine