Comment 52 for bug 1788098

Stefan NACK'ed the series. For some unknown reason that email did make it into the archive so here is ist content:

> Since commit fb1522e099f0 ("KVM: update to new mmu_notifier semantic
> v2", 2017-08-31), the MMU notifier code in KVM no longer calls the
> kvm_unmap_hva callback. This removes the PPC implementations of
> kvm_unmap_hva().

This is not really the way SRUs should be done. We cannot remove support for
interfaces after release. Also the amount of change as a requisite should be
kept as minimal as possible. This just feels like too many changes without a
strong argument on why this must be done that way.

-Stefan