From: Len Brown <lenb@kernel.org>
Organization: Intel Open Source Technology Center
To: Andrew Morton <akpm@linux-foundation.org>
Subject: Re: 2.6.24-rc3-mm1 - Kernel Panic on IO-APIC
Date: Wed, 21 Nov 2007 14:22:32 -0500
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Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
       linux-kernel@vger.kernel.org, Andy Whitcroft <apw@shadowen.org>,
       Balbir Singh <balbir@linux.vnet.ibm.com>, linux-acpi@vger.kernel.org,
       Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>
References: <20071120204525.ff27ac98.akpm@linux-foundation.org> <4743CC0B.9000508@linux.vnet.ibm.com> <20071120221839.faab108e.akpm@linux-foundation.org>
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On Wednesday 21 November 2007 01:18, Andrew Morton wrote:
> On Wed, 21 Nov 2007 11:41:23 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:

> > SMP alternatives: switching to UP code
> > ACPI: Core revision 20070126
> > ..MP-BIOS bug: 8254 timer not connected to IO-APIC

did previous kernels print this too?

> > Kernel panic - not syncing: IO-APIC + timer doesn't work! Try using the 'noapic' kernel parameter
> 
> ACPI or x86 breakage, I guess.

If you suspect ACPI breakage, then try "acpi=off" or "acpi=noirq".

thanks,
-Len
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