z/VM directions, an interesting subject that we also discussed at the
Technical University in Vienna, where I also got the tip to join this list.

As a long time z/VM user my main concern is NOT exploiting new areas and
new technologies, it is rather exploiting existing or new hardware
functions and making them available for the guest systems.
I do not know of many users that use an LPAR, run z/VM under it, and then
run z/OS guests, but that is where the problems for us begin.  z/VM
exploits the hardware but in several cases can not pass this information to
a guest z/OS system.  For example: z/VM supports hyperpav and hyperpav
aliases, even if they use the same address (using channel subsets) but can
not pass channel subsets to the z/OS guest.  I can understand that there is
pressure to allow new work loads to run under z/VM, but the current work
loads and work cases must also be supported.  When I asked why our main
shop does not try to do anything with z/VM the answer was shot back -
because z/OS capacity pricing is not supported under z/VM, be that by z/VM
or by vendors that do not even offer licenses for hard capped guests under
z/VM.  I would like to add that we discussed these issues in Vienna, and I
have high hopes that these hindurances for z/VM will be resovled, hopefully
before I retire.  Being a long time user I love the stability and ease of
use of this great product, z/VM, and am looking forward to its future.

Regards,
William Kim Mongan

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