Date: Sun, 8 Oct 2000 23:49:12 -0700 (PDT) From: DougB@gorean.org To: FreeBSD-gnats-submit@freebsd.org Subject: kern/21852: [PATCH] [TINY] Clarify NO_F00F_HACK option in NOTES Message-ID: <200010090649.XAA71029@dt051n37.san.rr.com>
next in thread | raw e-mail | index | archive | help
>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: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200010090649.XAA71029>