linux-kernel - Re: [patch] disable NMI watchdog by default

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Date:	Mon, 5 Mar 2007 20:54:45 +0100
From:	Andi Kleen <ak@...e.de>
To:	Len Brown <lenb@...nel.org>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>,
	Adrian Bunk <bunk@...sta.de>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [patch] disable NMI watchdog by default

On Monday 05 March 2007 18:42, Len Brown wrote:
> On Monday 05 March 2007 07:20, Ingo Molnar wrote:
> > 
> > Linus,
> > 
> > Andrew sent the patch below (which is now months old and has been in -mm 
> > for some time) towards Andi's tree 4 weeks ago, but apparently it fell 
> > into a black hole there - the patch is still not upstream!
> > 
> > This is a must-have for v2.6.21
> 
> I agree.
> There are multiple machines not booting because of nmi_watchdog.
> Some of them are documented here:
> http://bugzilla.kernel.org/show_bug.cgi?id=7839
> 
> We used to think this was the "nolapic" bug,
> but it is actually the "nmi_watchdog=0" bug.

I thought that one was worked around by Ingo's patch to not do nmi watchdog 
during ACPI methods, wasn't it? 

-Andi
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