1.\" Copyright (c) 1997 2.\" Steve Passe <fsmp@FreeBSD.ORG>. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. The name of the developer may NOT be used to endorse or promote products 10.\" derived from this software without specific prior written permission. 11.\" 12.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 13.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 14.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 15.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 16.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 18.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 19.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 20.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 21.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 22.\" SUCH DAMAGE. 23.\" 24.\" $FreeBSD: src/share/man/man4/smp.4,v 1.7.2.4 2001/08/17 13:08:39 ru Exp $ 25.\" $DragonFly: src/share/man/man4/smp.4,v 1.4 2007/10/27 18:45:00 swildner Exp $ 26.\" 27.Dd August 4, 1997 28.Dt SMP 4 29.Os 30.Sh NAME 31.Nm SMP 32.Nd description of the Symmetric MultiProcessor kernel 33.Sh SYNOPSIS 34.Cd options SMP 35.Cd options APIC_IO 36.Sh DESCRIPTION 37The 38.Nm 39kernel implements symmetric multiprocessor support. 40.Sh COMPATIBILITY 41The 42.Nm 43kernel supports motherboards that follow the Intel MP specification, 44version 1.4. 45.Sh SEE ALSO 46.Xr mptable 1 , 47.Xr dmesg 8 48.Sh HISTORY 49The 50.Nm 51kernel's early history is not (properly) recorded. It was developed 52in a separate CVS branch until April 26, 1997, at which point it was 53merged into 3.0-current. By this date 3.0-current had already been 54merged with Lite2 kernel code. 55.Sh AUTHORS 56.An Steve Passe Aq fsmp@FreeBSD.org 57.Sh BUGS 58That would be a good guess... 59