From d75f0db46defeecaa76e7ddd4763817b28d4c87a Mon Sep 17 00:00:00 2001
From: tb <tb@openbsd.org>
Date: Thu, 4 May 2017 15:59:39 +0000
Subject: Document that -u wants to read from /dev/mem, so it needs
 kern.allowkmem=1. Problem reported by jdd () cs ! toronto ! edu on bugs.

ok brynet deraadt jmc
---
 usr.sbin/config/config.8 | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'usr.sbin/config/config.8')

diff --git a/usr.sbin/config/config.8 b/usr.sbin/config/config.8
index 179af831b98..ad3fc3aed18 100644
--- a/usr.sbin/config/config.8
+++ b/usr.sbin/config/config.8
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: config.8,v 1.63 2017/05/01 06:39:25 mpi Exp $
+.\"	$OpenBSD: config.8,v 1.64 2017/05/04 15:59:39 tb Exp $
 .\"	$NetBSD: config.8,v 1.10 1996/08/31 20:58:16 mycroft Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993
@@ -30,7 +30,7 @@
 .\"
 .\"     from: @(#)config.8	8.2 (Berkeley) 4/19/94
 .\"
-.Dd $Mdocdate: May 1 2017 $
+.Dd $Mdocdate: May 4 2017 $
 .Dt CONFIG 8
 .Os
 .Sh NAME
@@ -130,6 +130,11 @@ If so, compare the running kernel with the kernel to be edited
 .Pq Ar infile .
 If they seem to be the same, apply all configuration changes performed at
 boot.
+Using this option requires read access to
+.Pa /dev/mem ,
+which may be restricted based upon the value of the
+.Ar kern.allowkmem
+.Xr sysctl 8 .
 .El
 .Sh KERNEL BUILDING
 The output of
-- 
cgit v1.2.3-59-g8ed1b