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Date:      Wed, 19 Feb 2003 17:29:40 +0200
From:      Yury Tarasievich <grog@grsu.by>
To:        freebsd-hackers@freebsd.org
Subject:   Re: Tyan S4520 GCHE
Message-ID:  <3E53A2E4.90807@grsu.by>
References:  <20030218155841.V94954-100000@mail.ncircle.com>

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Brian Buchanan wrote:

>I'm having problems getting SMP to work on a Tyan S4520 Thunder GCHE
>motherboard with 4x 1.9GHz Xeon processors:
>
>Programming 16 pins in IOAPIC #0
>IOAPIC #0 intpin 2 -> irq 0
>Programming 16 pins in IOAPIC #1
>Programming 16 pins in IOAPIC #2
>AP #1 (PHY# 2) failed!
>panic y/n? [y] AP #2 (PHY# 4) failed!
>panic y/n? [y] AP #3 (PHY# 6) failed!
>panic y/n? [y]
>
>This is under FreeBSD 4.7-RELEASE.  I also tried a recent -STABLE build
>and 5.0-RELEASE, with the same results.
>
I made similar problem known here about middle-January. John Baldwin 
told me there is standing problem with APICs on 7500SW2 motherboards. 
Possible solution he suggested was:

> You can try to change bus_clock from 66000000 to 533000000 in sys/i386/i386/mpapic.c and see if that helps.

This didn't help me (I couldn't even pass "panic (y/n)" with "no"). See if it helps you.

What really concerns me now is 5.0-RELEASE with all the SMPng can't cope with the problem.





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