svn commit: r355613 - head/share/man/man7
Ed Maste
emaste at FreeBSD.org
Wed Dec 11 16:43:55 UTC 2019
Author: emaste
Date: Wed Dec 11 16:43:54 2019
New Revision: 355613
URL: https://svnweb.freebsd.org/changeset/base/355613
Log:
security.7: add caveat about interim sysctl paths from r355436
r355436 moved mitigation sysctls to machdep.mitigations but did not
rationalize the sense of the invidual knobs. Clarify that the old
names remain the canonical way to set these mitigations.
Backwards compatibility will be maintained for the original names
(e.g. hw.ibrs_disable), but not from the interim names
(e.g. machdep.mitigations.ibrs.disable).
Sponsored by: The FreeBSD Foundation
Modified:
head/share/man/man7/security.7
Modified: head/share/man/man7/security.7
==============================================================================
--- head/share/man/man7/security.7 Wed Dec 11 16:09:57 2019 (r355612)
+++ head/share/man/man7/security.7 Wed Dec 11 16:43:54 2019 (r355613)
@@ -28,7 +28,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd November 12, 2019
+.Dd December 11, 2019
.Dt SECURITY 7
.Os
.Sh NAME
@@ -944,6 +944,17 @@ information access more restricted.
Some people consider this as improving system security, so the knobs are
briefly listed there, together with controls which enable some mitigations
of the hardware state leaks.
+.Pp
+Hardware mitigation sysctl knobs described below have been moved under
+.Pa machdep.mitigations ,
+with backwards-compatibility shims to accept the existing names.
+A future change will rationalize the sense of the individual sysctls
+(so that enabled / true always indicates that the mitigation is active).
+For that reason the previous names remain the canonical way to set the
+mitigations, and are documented here.
+Backwards compatibility shims for the interim sysctls under
+.Pa machdep.mitigations
+will not be added.
.Bl -tag -width security.bsd.unprivileged_proc_debug
.It Dv security.bsd.see_other_uids
Controls visibility of processes owned by different uid.
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