usage_err
usage_err("Bad maxmem option");
usage_err("Bad target CPU number at '%s'", endp);
usage_err("Bad target CPU, valid range is 0-%d", real_ncpus - 1);
usage_err("Bad target CPU number at '%s'", endp);
usage_err("Bad target CPU, valid range is 0-%d", real_ncpus - 1);
usage_err("Bad ncpus, valid range is 1-%d", MAXCPU);