Craddock, Chris wrote:
I thought you said there was a way in z/VM to restrict a guest to run
ESA/390 and not switch to z/Architecture. But I'll be damned if I can
find it now.
Thoughts?
IANA VM weenie, but I would guess that if the VM is IPL'd into
a partition that is running ARCHLVL 1, then the only thing a
guest could "see" would also be ARCHLVL 1. IOW it would be an
implicit "feature" of the environment that the VM ran in.
I accidentally posted a private message to the list. :-[
z/OS guests running under the latest z/VM will switch to z/Architecture
mode. Guests running under VM/ESA -- even on a zSeries machine -- see
only ESA/390 architecture. In that case z/OS will *not* switch to
z/Architecture mode. (This may also be true of some earlier z/VM releases.)
You can run z/OS as a guest under VM/ESA in its own LPAR or as a
2nd-level guest under VM/ESA running as a guest of z/VM. Either way,
z/OS will *not* switch to z/Architecture mode.
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