K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2019-02-05T17:49:27.468902Z
K 7
svn:log
V 270
amd64: clear callee-preserved registers on syscall exit.

%r8, %r10, and on non-KPTI configuration %r9 were not restored on fast
return from a syscall.

Reviewed by:	markj
Approved by:	so
Security:	CVE-2019-5595
Sponsored by:	The FreeBSD Foundation
MFC after:	0 minutes

END