Description of problem:

When I boot a fresh installation of Fedora 29 Cinnamon desktop and try to test one of the Fedora QA testcases that checks for failed services, I am able to find a failed service which is unwanted behaviour.

Version-Release number of selected component (if applicable):

Fedora 29 Beta 1.3 RC

How reproducible:

Always

Steps to Reproduce:
1. Do a fresh install on my PC.
2. After start, run systemctl --all --failed.

Actual results:

Using the command above, I am getting the following:
====
  UNIT           LOAD   ACTIVE SUB    DESCRIPTION                           
● mcelog.service loaded failed failed Machine Check Exception Logging Daemon
====

Journal says this:
====
[bdylan@localhost ~]$ journalctl -u mcelog
-- Logs begin at Tue 2018-09-18 15:17:56 CEST, end at Tue 2018-09-18 15:28:15 CEST. --
zář 18 15:18:02 localhost.localdomain systemd[1]: Started Machine Check Exception Logging Daemon.
zář 18 15:18:02 localhost.localdomain mcelog[797]: mcelog: ERROR: AMD Processor family 21: mcelog does not support this processor.  Please use the edac_mce_amd module instead.
zář 18 15:18:02 localhost.localdomain mcelog[797]: CPU is unsupported
zář 18 15:18:02 localhost.localdomain systemd[1]: mcelog.service: Main process exited, code=exited, status=1/FAILURE
zář 18 15:18:02 localhost.localdomain systemd[1]: mcelog.service: Failed with result 'exit-code'.
====

My machine is:
====
Architektura:          x86_64
Operační režim(y) CPU: 32-bit, 64-bit
Pořadí bajtů:          Little Endian
Počet CPU:             4
Seznam zapnutých CPU:  0-3
Vláken na jádro:       2
Jader na patici:       2
Patic:                 1
Uzly NUMA:             1
ID výrobce:            AuthenticAMD
Rodina CPU:            21
Model:                 56
Název modelu:          AMD A10-7870K Radeon R7, 12 Compute Cores 4C+8G
Stepping:              1
CPU MHz:               2001.744
CPU max. MHz:          3900,0000
CPU min. MHz:          1700,0000
BogoMIPS:              7780.84
Virtualizace:          AMD-V
L1d keš:               16K
L1i keš:               96K
L2 keš:                2048K
CPU NUMA uzlu 0:       0-3
Příznaky:              fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb bpext ptsc cpb hw_pstate proc_feedback ssbd vmmcall fsgsbase bmi1 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold overflow_recov
====

Expected results:

mcelog should not fail.