From owner-freebsd-bugs@FreeBSD.ORG  Wed Aug  6 16:10:04 2008
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
Delivered-To: freebsd-bugs@hub.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id B38AD1065683
	for <freebsd-bugs@hub.freebsd.org>;
	Wed,  6 Aug 2008 16:10:04 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id A2B238FC1D
	for <freebsd-bugs@hub.freebsd.org>;
	Wed,  6 Aug 2008 16:10:04 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.2/8.14.2) with ESMTP id m76GA492045863
	for <freebsd-bugs@freefall.freebsd.org>; Wed, 6 Aug 2008 16:10:04 GMT
	(envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.14.2/8.14.1/Submit) id m76GA4Q8045862;
	Wed, 6 Aug 2008 16:10:04 GMT (envelope-from gnats)
Date: Wed, 6 Aug 2008 16:10:04 GMT
Message-Id: <200808061610.m76GA4Q8045862@freefall.freebsd.org>
To: freebsd-bugs@FreeBSD.org
From: David Schultz <das@FreeBSD.ORG>
Cc: 
Subject: Re: kern/126300: Add missing -mno-sse3 flag for AMD64 to
	/usr/src/sys/conf/kern.mk
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: David Schultz <das@FreeBSD.ORG>
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 06 Aug 2008 16:10:04 -0000

The following reply was made to PR kern/126300; it has been noted by GNATS.

From: David Schultz <das@FreeBSD.ORG>
To: Paul Wootton <paul@fletchermoorland.co.uk>
Cc: bug-followup@FreeBSD.ORG
Subject: Re: kern/126300: Add missing -mno-sse3 flag for AMD64 to /usr/src/sys/conf/kern.mk
Date: Wed, 6 Aug 2008 12:03:01 -0400

 On Wed, Aug 06, 2008, Paul Wootton wrote:
 > Added the missing -mno-sse3 flag to the amd64 section in the /usr/src/sys/conf/kern.mk file
 [...]
 > .if ${MACHINE_ARCH} == "amd64"
 >  CFLAGS+=        -mcmodel=kernel -mno-red-zone \
 > -                -mfpmath=387 -mno-sse -mno-sse2 -mno-mmx -mno-3dnow \
 > +                -mfpmath=387 -mno-sse -mno-sse2 -mno-sse3 -mno-mmx -mno-3dnow 
 
 Just out of curiosity, why do you believe this is needed? I'm
 pretty sure -mno-sse implies -mno-sse3 automatically, and likewise
 for -mno-sse2. If this weren't the case, then all hell would break
 loose when the kernel started using xmm registers.