I just tested artful and it is working fine:
1604 ➜ ~ uname -a Linux 1604 4.13.0-36-generic #40~lp1751994 SMP Thu Mar 8 15:19:19 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux 1604 ➜ ~ dmesg | grep rfi [ 0.000000] rfi-flush: Using fallback displacement flush [ 0.000000] rfi-flush: patched 11 locations
I just tested artful and it is working fine:
1604 ➜ ~ uname -a
Linux 1604 4.13.0-36-generic #40~lp1751994 SMP Thu Mar 8 15:19:19 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux
1604 ➜ ~ dmesg | grep rfi
[ 0.000000] rfi-flush: Using fallback displacement flush
[ 0.000000] rfi-flush: patched 11 locations