[CentOS] Panic with EL7 KVM guest on EL6 host on AMD server with latest kernel

Tue Jul 17 07:00:13 UTC 2018
Simon Matter <simon.matter at invoca.ch>

> Hi,
>
> I have AMD servers running CentOS 6.10 as KVM host and on it guests
> running CentOS 7.5.
>
> Since the latest kernel update on CentOS 6.10,
> kernel-2.6.32-754.2.1.el6.x86_64, I can't boot the CentOS 7.5 guests with
> kernel-3.10.0-862.6.3.el7.x86_64 anymore.
>
> Reverting CentOS 6.10 host to kernel-2.6.32-754.el6.x86_64 fixes the
> problem.
>
> Screendump of the panic is attached, not very helpful I guess.

I didn't know attachments are stripped by the list.

Here is the bugreport:

https://bugs.centos.org/view.php?id=15067

My feeling is that the recent Intel fixes/workarounds have broken it here
for AMD systems :(

Regards,
Simon