kern/126300: Add missing -mno-sse3 flag for AMD64 to /usr/src/sys/conf/kern.mk

[Paul Wootton]

>Number:         126300
>Category:       kern
>Synopsis:       Add missing -mno-sse3 flag for AMD64 to /usr/src/sys/conf/kern.mk
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          update
>Submitter-Id:   current-users
>Arrival-Date:   Wed Aug 06 12:30:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Paul Wootton
>Release:        FreeBSD 7.0-STABLE
>Organization:
>Environment:
FreeBSD demophon.fletchermoorland.co.uk 7.0-STABLE FreeBSD 7.0-STABLE #11: Wed Aug  6 11:48:04 BST 2008     paul at demophon.fletchermoorland.co.uk:/usr/obj/usr/src/sys/DEMOPHON  amd64

>Description:
Added the missing -mno-sse3 flag to the amd64 section in the /usr/src/sys/conf/kern.mk file

I know this is a duplicate of kern/123518 and kern/124463 but
1) kern/123518 has now been open since 8 May 2008
2) kern/124463 was closed as it was a duplicate of kern/123518, yet the fixed has not been MFCed

Is there any reason why this can not be MFCed for the AMD64 platform
>How-To-Repeat:

>Fix:
in /usr/src/sys/conf/kern.mk

Change 

.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 

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