instruction: 0.907
device: 0.790
graphic: 0.471
network: 0.349
mistranslation: 0.309
semantic: 0.241
vnc: 0.214
socket: 0.120
boot: 0.102
other: 0.092
assembly: 0.069
KVM: 0.016

hw/char/riscv_htif.c and hw/char/sifive_uart call qemu_chr_fe_write() and ignore return value