[LTP] [PATCH] tst_virt: Make use of systemd-detect-virt if available

[Cyril Hrubis <chrubis@suse.cz>]

Hi!
> > You can also boot QEMU with non-default -cpu option and you will get the
> > same result.
> > 
> > The easiest solution is to try the systemd-detect-virt first if it
> > exists, then we fall back to the previously implemented detections for
> > older distributions. This is not complete solution though, as the
> > detection still fails with older and non-systemd distributions.
> > 
> > Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
> > ---
> 
> We could also add a function that tries "virt-what", to increase our chances.
> Anyway, I think it's good idea to not rely just on /proc/cpuinfo.

Looking around virt-what does not seem to be installed by default on
anything I have here so it does not seem to add too much value. Feel
free to add it if you have a usecase.

Another option would be more or less copying what systemd-detect-virt
does, checking dmi, etc. But that is 500 lines of heuristics and
maintaining that would take take non-trivial amount of effort I would
rather like to spend on something more productive...

-- 
Cyril Hrubis
chrubis@suse.cz