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Date:      Tue, 30 Jul 2002 15:05:01 +0100 (IST)
From:      Nick Hilliard <nick-lists@netability.ie>
To:        FreeBSD-gnats-submit@FreeBSD.org
Subject:   docs/41166: man page for smp(4) is short on details
Message-ID:  <200207301405.g6UE51Ys025498@flapjack.netability.ie>

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>Number:         41166
>Category:       docs
>Synopsis:       man page for smp(4) is short on details
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-doc
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          update
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jul 30 11:30:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Nick Hilliard
>Release:        FreeBSD 4.6-RELEASE-p2 i386
>Organization:
Network Ability Ltd.
>Environment:
System: FreeBSD flapjack.netability.ie 4.6-RELEASE-p2 FreeBSD 4.6-RELEASE-p2 #1: Sat Jul 13 22:31:25 IST 2002 nick@flapjack.netability.ie:/usr/src/sys/compile/FLAPJACK i386


>Description:

The man page for smp(4) is a little lacking in detail about FreeBSD's SMP
implementation.  The patch included below just gives some details on how to
enable SMP, and points the user at the handbook.

>How-To-Repeat:

>Fix:

--- smp.4.orig	Fri Aug 17 14:08:39 2001
+++ smp.4	Tue Jul 30 15:00:57 2002
@@ -34,23 +34,40 @@
 .Sh DESCRIPTION
 The
 .Nm
-kernel implements symmetric multiprocessor support.
+kernel implements symmetric multiprocessor support.  This functionality can
+be enabled in FreeBSD by compiling a kernel with the the following options
+enabled:
+.Bd -literal -offset indent
+options         SMP
+options         APIC_IO
+.Ed
+.Pp
+Further information on compiling custom kernels can be found in the FreeBSD
+Handbook.
 .Sh COMPATIBILITY
 The
 .Nm
 kernel supports motherboards that follow the Intel MP specification,
 version 1.4.
 .Sh BUGS
-That would be a good guess...
+Certain features of APM (Advanced Power Management) are known to interact
+badly with
+.Nm .
+APM shutdown is generally safe, but other APM features should be avoided.
+This is not a FreeBSD-specific problem, but is due to the fact that APM
+was not designed with
+.Nm
+in mind.
 .Sh SEE ALSO
 .Xr mptable 1 ,
-.Xr dmesg 8
+.Xr dmesg 8 ,
+.Xr config 8 .
 .Sh HISTORY
 The
 .Nm
 kernel's early history is not (properly) recorded.  It was developed
 in a separate CVS branch until April 26, 1997, at which point it was
-merged into 3.0-current.  By this date 3.0-current had already been
-merged with Lite2 kernel code.
+merged into 3.0-current.  FreeBSD 3.0 was the first major release to support
+.Nm .
 .Sh AUTHORS
 .An Steve Passe Aq fsmp@FreeBSD.org


>Release-Note:
>Audit-Trail:
>Unformatted:

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