From owner-cvs-all  Tue Feb 12 14:22:22 2002
Delivered-To: cvs-all@freebsd.org
Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11])
	by hub.freebsd.org (Postfix) with SMTP
	id 6724C37B404; Tue, 12 Feb 2002 14:22:06 -0800 (PST)
Received: from walton.maths.tcd.ie by salmon.maths.tcd.ie with SMTP
          id <aa14319@salmon>; 12 Feb 2002 22:07:28 +0000 (GMT)
To: "David W. Chapman Jr." <dwcjr@inethouston.net>
Cc: Mike Silbersack <silby@silby.com>, cvs-committers@FreeBSD.ORG,
	cvs-all@FreeBSD.ORG
Subject: Re: cvs commit: src/sys/conf options.i386 options.pc98 src/sys/i386/conf NOTES src/sys/i386/i386 initcpu.c 
In-reply-to: Your message of "Tue, 12 Feb 2002 15:36:07 CST."
             <20020212213607.GB7055@leviathan.inethouston.net> 
X-Request-Do: 
Date: Tue, 12 Feb 2002 22:07:28 +0000
From: David Malone <dwmalone@maths.tcd.ie>
Message-ID:  <200202122207.aa14319@salmon.maths.tcd.ie>
Sender: owner-cvs-all@FreeBSD.ORG
Precedence: bulk
List-ID: <cvs-all.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20cvs-all>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20cvs-all>
X-Loop: FreeBSD.ORG

> Is there an easy to to tell if the BIOS has detected SSE on athlons?  

Look at the Features line in /var/run/dmesg.boot and see if it
contains SSE:

Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT
,PSE36,MMX,FXSR,SSE>

If it doesn't then the BIOS may have forgotten. If you check the
"Id = " number on the previous line of dmesg.boot and the id looks
like "0x66y" or "0x67y" then this patch should help.

To actually use SSE within FreeBSD you'll need the CPU_ENABLE_SSE
option too.

	David.

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message