------- Comment From [email protected] 2020-08-11 06:49 EDT-------
I have installed this ubuntu version (adding focal-proposed to 
/etc/apt/list.sources.d tree):
root@t35lp46:~# uname -a
Linux t35lp46 5.4.0-43-generic #47-Ubuntu SMP Sat Aug 8 06:29:47 UTC 2020 s390x 
s390x s390x GNU/Linux
root@t35lp46:~#

root@t35lp46:~# ll /sys/devices/cpum_cf/events/DFLT_*
-r--r--r-- 1 root root 4096 Aug 11 10:41 /sys/devices/cpum_cf/events/DFLT_ACCESS
-r--r--r-- 1 root root 4096 Aug 11 10:41 /sys/devices/cpum_cf/events/DFLT_CC
-r--r--r-- 1 root root 4096 Aug 11 10:41 
/sys/devices/cpum_cf/events/DFLT_CCERROR
-r--r--r-- 1 root root 4096 Aug 11 10:41 /sys/devices/cpum_cf/events/DFLT_CYCLES
root@t35lp46:~

The Deflate counters are listed and can be used:

root@t35lp46:~# perf stat -e cpum_cf/DFLT_CCERROR/ -- true

Performance counter stats for 'true':

0      cpum_cf/DFLT_CCERROR/

0.000379529 seconds time elapsed

0.000065000 seconds user
0.000193000 seconds sys

root@t35lp46:~#
The patches are verified ok

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https://bugs.launchpad.net/bugs/1881096

Title:
  [UBUNTU 20.04] Deflate counters reported by lscpumf are not valid or
  available with perf

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