From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Corey Minyard <minyard@acm.org>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>,
OpenIPMI Developers <openipmi-developer@lists.sourceforge.net>,
Wim Van Sebroeck <wim@iguana.be>
Subject: Re: [PATCH] watchdog: add pretimeout ioctl
Date: Wed, 28 Jun 2006 11:27:18 +0100 [thread overview]
Message-ID: <1151490438.15166.8.camel@localhost.localdomain> (raw)
In-Reply-To: <44A1D5E5.3020903@acm.org>
Ar Maw, 2006-06-27 am 20:05 -0500, ysgrifennodd Corey Minyard:
> since even if the machine is hard-locked the NMI will come through.
Don't bet on that. There are a considerable number of crash stall cases
where NMI will not be delivered, plus you can disable NMI if you are
really sneaky and want to.
The usual case NMI fails is crashed video cards. The PCI transaction
stalls forever on many boards and the CPU therefore never finishes the
instruction and never services the NMI
Alan
next prev parent reply other threads:[~2006-06-28 10:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-27 18:22 [PATCH] watchdog: add pretimeout ioctl minyard
2006-06-27 18:59 ` Alan Cox
2006-06-28 1:05 ` Corey Minyard
2006-06-28 10:27 ` Alan Cox [this message]
2006-06-28 0:29 ` Andrew Morton
2006-06-28 0:38 ` Corey Minyard
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