From owner-freebsd-smp Thu Nov 28 20:22:29 1996 Return-Path: owner-smp Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id UAA26838 for smp-outgoing; Thu, 28 Nov 1996 20:22:29 -0800 (PST) Received: from spinner.DIALix.COM (root@spinner.DIALix.COM [192.203.228.67]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id UAA26830 for ; Thu, 28 Nov 1996 20:22:16 -0800 (PST) Received: from spinner.DIALix.COM (peter@localhost.DIALix.oz.au [127.0.0.1]) by spinner.DIALix.COM (8.8.3/8.8.3) with ESMTP id MAA10484; Fri, 29 Nov 1996 12:21:04 +0800 (WST) Message-Id: <199611290421.MAA10484@spinner.DIALix.COM> X-Mailer: exmh version 1.6.9 8/22/96 To: Nate Williams cc: Steve Passe , freebsd-smp@freebsd.org Subject: Re: cvs commit: sys/i386/i386 locore.s swtch.s sys/i386/include pmap.h In-reply-to: Your message of "Thu, 28 Nov 1996 09:20:45 MST." <199611281620.JAA14714@rocky.mt.sri.com> Date: Fri, 29 Nov 1996 12:21:04 +0800 From: Peter Wemm Sender: owner-smp@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Nate Williams wrote: > > > Processors: APIC ID Version State Family Model Step Fla gs > > > 0 0x11 BSP, usable 5 2 1 0x 07bf > > > 1 0x11 AP, usable 5 2 1 0x 07bf > > > ^^^ > > > without problems (that I'm aware of). > > > > I think Step 6 was where they fixed the FPU divide bug.. (I saw a > > reference to this on "The Ultimate Chip list" or something like that) > > Nope, I've got a Stepping 5 P100 chip here and it's work fine (been > tested and everything). Well, that's what I suspected too. I had only seen step 1, 5 and much higher. I wondered if there was a mistake in the list and in fact it was step 5 that fixes it. (I have P5-90 Step 1 cpus btw) BTW, does anybody have the code to test for the fdiv bug? I looked in the linux kernel to see what it tests (since the fdiv bug is listed in /proc/cpuinfo), and discovered that the linux (2.0.x last time I looked) kernel doesn't even test it!! it simply sets the value to "no". What a crock! (.. unless I missed the test..) > Nate Cheers, -Peter