From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Gleixner <tglx@linutronix.de>
Subject: Re: 2.6.21-rc[123] regression with NOAPIC
Date: Thu, 22 Mar 2007 15:10:03 +0100
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To: Adrian Bunk <bunk@stusta.de>
Cc: Ray Lee <ray-lk@madrabbit.org>, LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>, john stultz <johnstul@us.ibm.com>, Len Brown <len.brown@intel.com>, Andi Kleen <ak@suse.de>, linux-acpi@vger.kernel.org

On Thu, 2007-03-22 at 14:42 +0100, Adrian Bunk wrote:
> > Starting with head as of yesterday and reverting two commits (that are
> > duplicates of each other -- the same commit came into Linus's tree via
> > two different paths) 'fixes' the problem for me. I'll let those with the
> > big brains decide just why.
> > 
> > The two commits are 5c95d3f5783ab184f64b7848f0a871352c35c3cf and
> > 3434933b17fa64adddf83059603c61296f6e1ee2 . The net reverse diff of those
> > two is below.
> >...
> 
> Thanks for tracking it down.
> 
> It's quite possible that these commits trigger your problem.
> 
> Does it work if you do _not_ revert the commits, and instead replace in
> drivers/acpi/processor_idle.c the
>   #ifdef ARCH_APICTIMER_STOPS_ON_C3
> with an
>   #if 0
> ?

Then NOAPIC probably works again, but booting w/o NOAPIC fails.

	tglx