s390x/kvm: don't enable key wrapping if msa3 is disabled
As the CPU model now controls msa3, trying to set wrapping keys without msa3 being around/enable in the kernel will produce misleading errors. So let's simply not configure key wrapping if msa3 is not enabled and make compat machines with disabled CPU model work correctly. Signed-off-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-25-dahi@linux.vnet.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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