linux-kernel - Re: 2.6.22-rc3 nmi watchdog hang

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Message-ID: <20070605095600.GA29270@elte.hu>
Date:	Tue, 5 Jun 2007 11:56:00 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Andi Kleen <andi@...stfloor.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: 2.6.22-rc3 nmi watchdog hang


* Ingo Molnar <mingo@...e.hu> wrote:

> > ah, plain -rc3 hangs too. So it's one of these commits i guess:
> > 
> > commit 1eeb66a1bb973534dc3d064920a5ca683823372e
> > commit 09198e68501a7e34737cd9264d266f42429abcdc
> > commit bbba11c35baaad3f70f32e185a2c1d40d7901fe9
> > commit bf8696ed6dfa561198b4736deaf11ab68dcc4845
> 
> oh, damn. The resulting kernel after having undone these doesnt even 
> build ...

Andi/Linus Cc:-ed - these NMI watchdog changes came over the x86_64 
tree. I suspect this patch:

 commit 09198e68501a7e34737cd9264d266f42429abcdc
 Author: Andi Kleen <ak@...e.de>
 Date:   Wed May 2 19:27:20 2007 +0200

     [PATCH] i386: Clean up NMI watchdog code

Andi - just boot with nmi_watchdog=2 on a dual-core Athlon64 CPU.

	Ingo
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