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

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Message-ID: <20070618121122.GA14375@elte.hu>
Date:	Mon, 18 Jun 2007 14:11:22 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Björn Steinbrink <B.Steinbrink@....de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	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


* Björn Steinbrink <B.Steinbrink@....de> wrote:

> >      [PATCH] i386: Clean up NMI watchdog code
> > 
> > Andi - just boot with nmi_watchdog=2 on a dual-core Athlon64 CPU.
> 
> I still fail to reproduce this, could you send me your config?

attached below. nmi_watchdog=2 still hangs as of -rc5, using the 32-bit 
kernel (at various places during bootup - a typical place is somewhere 
after cfq_init()). Changing it to nmi_watchdog=0 makes the kernel boot 
again.

	Ingo

View attachment "config" of type "text/plain" (55515 bytes)