Re: amd64: svs

[Jaromír Doleček <jaromir.dolecek%gmail.com@localhost>]

BTW Maxime, I've updated https://en.wikipedia.org/wiki/Supervisor_Mode_Access_Prevention to note your work on NetBSD support for SMAP and SMEP. Would it be feasible to get SMAP support pulled up to netbsd-8 by chance?

The AMD Epyc processors support SMEP/SMAP as well, hopefully this will eventually trickle down to their consumer lines like Ryzen too.

I really hope this huge security cpu bug by Intel for Meltdown will help propel AMD into being a viable competitor.

Jaromir

2018-01-07 11:05 GMT+01:00 Maxime Villard <max%m00nbsd.net@localhost>:

Le 06/01/2018 à 16:03, clare%csel.org@localhost a écrit :

Runtime detection and configuration is desired as the
Linux did, rather than fixed compile-time option.

It would be nice, but it is more complicated than it seems. We would have
to hotpatch the entry points, and to do that we need a way to hotpatch macros,
and right now we don't have that. It would also be useful for SMAP.