The issue does not reproduce on Disco.
root@P8lpar4:/home/ubuntu# uname -a
Linux P8lpar4 5.0.0-19-generic #20-Ubuntu SMP Wed Jun 19 21:50:53 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux
root@P8lpar4:/home/ubuntu#
root@P8lpar4:/home/ubuntu# drmgr -c cpu -r -q 1
Validating CPU DLPAR capability...yes.
CPU 121
root@P8lpar4:/home/ubuntu# drmgr -c cpu -a -q 1
Validating CPU DLPAR capability...yes.
CPU 121
root@P8lpar4:/home/ubuntu#
The issue does not reproduce on Disco. /home/ubuntu# uname -a /home/ubuntu#
root@P8lpar4:
Linux P8lpar4 5.0.0-19-generic #20-Ubuntu SMP Wed Jun 19 21:50:53 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux
root@P8lpar4:
root@P8lpar4: /home/ubuntu# drmgr -c cpu -r -q 1 /home/ubuntu# drmgr -c cpu -a -q 1 /home/ubuntu#
Validating CPU DLPAR capability...yes.
CPU 121
root@P8lpar4:
Validating CPU DLPAR capability...yes.
CPU 121
root@P8lpar4: