I have not yet tested this on a really baseline AMD64 processor but feel today, Christmas, is a great day to do silly stuff.

A change was pused six hours ago : https://github.com/openzfs/zfs/commit/895d39aa832a6d90cb15263f8bbe41509baa3867

Based on https://github.com/openzfs/zfs/pull/11813 and also the code
change https://github.com/openzfs/zfs/commit/c05eec32a7f7eeeb17c328f39da742a8096a5991

OKay, well this is upstream for the moment : https://github.com/openzfs/zfs/issues/11781

I have other changes to also post but I need to verify that the enum symbol can be safely removed and then also follow up with upstream thus :

Currently re-running buildworld to confirm.

Happy to report that native buildworld did eventually complete just fine.

This change does allow me to get paste this little hiccup and then we run into a problem with -Wl,--gc-sections in lib/clang/llvm.build.mk so the trivial hack is to comment out that line and continue. Which seems to work thus far however I suspect this buildworld will run for days.