kib a6dcbd1557 Consistently ensure that we do not load MXCSR with reserved bits set.
Some callers of fpusetregs()/npxsetregs(), most importantly
set_fpcontext(), clear reserved bits.  But some did not.  Do the
clearing in fpusetregs() and remove now redundand operation from
set_fpcontext().

Reported by:	Maxime Villard <max@m00nbsd.net>
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2017-11-01 10:32:44 +00:00
..
2017-01-28 02:22:15 +00:00