[src/trunk]: src/share/man/man4 Add KASLR and SVS.

[maxv <maxv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/1bfe32c29c22
branches:  trunk
changeset: 828938:1bfe32c29c22
user:      maxv <maxv%NetBSD.org@localhost>
date:      Wed Jan 10 18:13:29 2018 +0000

description:
Add KASLR and SVS.

diffstat:

 share/man/man4/options.4 |  15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diffs (36 lines):

diff -r 5887999b438e -r 1bfe32c29c22 share/man/man4/options.4
--- a/share/man/man4/options.4  Wed Jan 10 17:36:06 2018 +0000
+++ b/share/man/man4/options.4  Wed Jan 10 18:13:29 2018 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: options.4,v 1.478 2017/12/28 23:16:15 wiz Exp $
+.\"    $NetBSD: options.4,v 1.479 2018/01/10 18:13:29 maxv Exp $
 .\"
 .\" Copyright (c) 1996
 .\"    Perry E. Metzger.  All rights reserved.
@@ -30,7 +30,7 @@
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
 .\"
-.Dd December 28, 2017
+.Dd January 10, 2018
 .Dt OPTIONS 4
 .Os
 .Sh NAME
@@ -2399,6 +2399,17 @@
 can map virtual address 0.
 The flag can be changed at runtime by
 .Xr sysctl 3 .
+.It Cd options KASLR
+Enables Kernel ASLR.
+This randomizes the location of the kernel image in memory.
+.Em NOTE :
+not available on all architectures.
+.It Cd options SVS
+Enables Separate Virtual Space.
+On architectures that are designed to function with a shared address
+space, this option explicitly isolates the kernel and user spaces.
+.Em NOTE :
+not available on all architectures.
 .El
 .Ss amiga-specific Options
 .Bl -ohang