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From: DougB@gorean.org
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Subject: kern/21852: [PATCH] [TINY] Clarify NO_F00F_HACK option in NOTES
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>Number:         21852
>Category:       kern
>Synopsis:       [PATCH] [TINY] Clarify NO_F00F_HACK option in NOTES
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          doc-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Oct 08 23:50:02 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Doug
>Release:        FreeBSD 3.5.1-STABLE-0903 i386
>Organization:
AAAG
>Environment:

	Most freebsd systems

>Description:

	The NO_F00F_HACK option is unclear in the sense that NOTES doesn't
	make clear that it's only useful in the presence of I586_CPU.

>How-To-Repeat:

	Read NOTES. Read the many questions on -questions about this option.

>Fix:

	Apply the following patch:


Index: NOTES
===================================================================
RCS file: /usr/ncvs/src/sys/i386/conf/NOTES,v
retrieving revision 1.833
diff -u -r1.833 NOTES
--- NOTES	2000/10/08 14:46:04	1.833
+++ NOTES	2000/10/09 06:42:24
@@ -215,8 +215,8 @@
 #
 # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
 # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
-# executed.  This should be included for ALL kernels that won't run
-# on a Pentium.
+# executed.  This option is only needed if I586_CPU is also defined,
+# and should be included for any non-Pentium CPU that defines it.
 #
 # NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
 # which indicates that the 15-16MB range is *definitely* not being


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


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