Comment # 28 on bug 1202138 from Marius Kittler

By the way, maybe these log messages relate to the fact that the PowerPC
workers are just getting stuck (instead of being able to invoke kdump and
reboot like the x86_64 worker I've run the same stress test on):

```
[535706993019,3] OPAL: Trying a CPU re-init with flags: 0x2
[536219455903,3] OPAL: CPU 0x409 not in OPAL !
```

It looks like the kernel tries to do something with the CPU that needs to be
done differently depending on whether the machine is running in OPAL mode or
not and the kernel does it the wrong way.

This is likely just bad post-mortem handling, though. The real problem is
likely something different and likely not even related to the stress test I've
been running. It nevertheless shows that Linux's PowerPC support doesn't seem
very stable in general.