> Can you enlighten me how that would improve security? I'm not saying that rings improve security. In fact I'm asking *if* there is any plan to use them to improve security.
I think that OpenBSD (and Linux and Windows) uses ring 0 for kernel and ring 3 for userland. I was asking if they planned to do some trick with ring 1 or 2, like the segment hack for W^X on i386. Also ring -1 from new cpu (as explained by Dave) could be interesting. However, I think that the "uneducated" answer by Theo means "no".
