Date: Fri, 13 Nov 1998 16:42:32 +0100 From: Tor.Egge@fast.no To: npe@bfc.dk Cc: freebsd-smp@FreeBSD.ORG Subject: Re: Panic while booting SMP on a Compaq Proliant 1600 Dual P2 - 350 Message-ID: <199811131542.QAA01578@midten.fast.no> In-Reply-To: Your message of "Thu, 12 Nov 1998 23:04:41 %2B0100" References: <412566BA.007919FB.00@bfc.dk>
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> When booting GENERIC-SMP kernel my system panics with the following :
> ---------------------------------------------
> ....
> avail memory = 258138112 (252088K bytes)
> panic assign_apic_irq: inconsistent table
> mp_lock = 00000001; cpuid = 0; lapic.id = 01000000
> Debugger("Panic")
> Stopped at _Debugger+0x35: movb $0,_in_Debugger.98
> ....
Your mp table describes 25 interrupt pins, but FreeBSD currently only
supports 24 active interrupt pins when using APIC_IO. The panic message
could have been better.
Some possible workarounds:
- ignore some of the entries in the mp table, e.g. based upon
a pci bus scan.
- map several interrupt pins to the same interrupt.
low level interrupt routines must know how to block
several iterrupt sources at once.
- let each bit in _cpl block an interrupt class instead of
a single interrupt. If any of the classes associated with
an interrupt is blocked, the interrupt is blocked.
- eliminate spl*() and _cpl.
- Tor Egge
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