From owner-freebsd-hackers  Wed May 26 21:48: 8 1999
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	Thu, 27 May 1999 14:47:41 +1000
Date: Thu, 27 May 1999 14:47:41 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199905270447.OAA04184@godzilla.zeta.org.au>
To: bob@anet.donetsk.ua, freebsd-hardware@FreeBSD.ORG
Subject: Re: Multiproc kernel 3.1-Release & Cyclades Cyclom 8Yep PCI
Cc: freebsd-hackers@FreeBSD.ORG
Sender: owner-freebsd-hackers@FreeBSD.ORG
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>I have multiprocessor machine:
>
>matherboard SOYO 5TX2/X5 with 2 intel 166 proceccors
>multiport card Cyclades Cyclom 8Yep
>
>Kernel config:
>
>options SMP                     # Symmetric MultiProcessor Kernel
>options APIC_IO                 # Symmetric (APIC) I/O
>options NCPU=2                  # number of CPUs
>options NBUS=2                  # number of busses
>
>All good work until somthing do start to send to /dev/cXX
>Then kernel panic and reboot !!!
>
>All good working under single processor kernel ... no problem

There seems to be a problem with nested locks.  What was the panic
message?

Try deleting the code in the SMP ifdefs in cy.c, and don't use fast
interrupts with SMP:
(a) for the pci version, don't use option CY_PCI_FASTINTR.
(b) for the isa version, delete the line with RI_FAST in it in cy.c.

Bruce


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