On Mon, 7 Jul 2014, Lennart Poettering wrote:
Actually it is like there is no dom0 on s390(x).
Direct hardware access is done on a level where the operating system doesn't
have any influence.
For example, unlike Xen dom0, the disks are never physical devices, they are
only shares of a storage pool.
Same is true for e.g. the CPUs or the main memory. It is all virtualized.
Some functions, like e.g. SMART for the disks, just doesn't make sense here.
Even if PR/SM is closer to the hardware than z/VM or KVM, the
e behaviour is the same. There is no useful SMART information.
If everything is virtualized on s390, what's the difference between the
two virtualizations you wanted to distuingish then?
For the test, e.g. ConditionVirtualization, there would be no difference.
I only distinguished this in order to have systemd-detect-virt showing the
correct virtualization technology.
Sure we could cover everything under something like, e.g. "s390 virtualization".
But I thought it is smarter to give this little additional information.
Maybe there are some cases where someone needs to know in more detail which
virtualization is running.
Regards
Thomas
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