Remove 4m bits and put some other nasty restrictions on kvm_uncache so that noone ever has a thought of using it again.
Remove 4m bits and put some other nasty restrictions on kvm_uncache so
that noone ever has a thought of using it again.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars