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Date:      Mon, 21 Jan 2002 07:10:02 -0800 (PST)
From:      "Hiten Pandya" <hitmaster@mysun.com>
To:        freebsd-bugs@FreeBSD.org
Subject:   Re: kern/23411: SMP Kernel Freezes Machines on Dual Processor TYAN Tiger Motherboard System.
Message-ID:  <200201211510.g0LFA2e39790@freefall.freebsd.org>

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The following reply was made to PR kern/23411; it has been noted by GNATS.

From: "Hiten Pandya" <hitmaster@mysun.com>
To: freebsd-gnats-submit@FreeBSD.org
Cc: shon@misproductions.com
Subject: Re: kern/23411: SMP Kernel Freezes Machines on Dual Processor
 TYAN Tiger Motherboard System.
Date: Mon, 21 Jan 2002 15:04:30 GMT

 This might not be the solution, but it can get rid of bugs in
 your kernel configuration.
 
 According to the kernel config file you submitted, it seems that there
 is a minute un-noticeable error (to my eyes anyway):
 
 01: machine         i386
 02: # cpu           I386_CPU
 03: # cpu           I486_CPU
 04: cpu             I586_CPU
 05: cpu             I686_CPU
 
 If you notice, on line 04 and 05, you can only have one type of
 processor I beleive.  According to the way SMP works, on intel,
 you can't mix and match CPU types.
 
 I would say, that you look at your dmesg output and see what type of
 processors you have (it should be an i686 neway).  Either way, you
 should only have one CPU type in the kernel config file, i.e. you
 need to comment out either 586 or 686 in your kernel config file.
 
 cpu        1686_CPU
 
 This technique worked on my system, which is :
 
 VIA Apollo Motherboard, (Gigabyte)
 2x 933MHz Pentium III (i686)
 
 In addition, you can also have a look at the various options available
 for the different CPUs, and motherboard limitations. You could also
 send me your dmesg(8) output, and I will try to analyse it, if the
 above solution doesn't work. (my email address below)
 
 One last thing, also enquire if there are any other options in your
 kernel config file, which conflict with the SMP options, or with
 any other options. (these should be documented in the LINT file.)
 
 regards,
 Hiten Pandya
 <hiten@uk.FreeBSD.org>
 <hitmaster@mysun.com>
 
 Security Fingerprint:
 45 a5 9c f2 fb 07 da 70 18 02 0b f3 63 f1 7a a6 hitenp@hpdi.ath.cx
 
 

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