linux-kernel - Re: [PATCH 0/5] kdump: extract log buffer and registers from vmcore on NMI button pressing

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Message-ID: <20100604094936.GA5975@cr0.nay.redhat.com>
Date:	Fri, 4 Jun 2010 17:49:36 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Vitaly Mayatskikh <v.mayatskih@...il.com>,
	Vivek Goyal <vgoyal@...hat.com>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Randy Dunlap <rdunlap@...otime.net>
Subject: Re: [PATCH 0/5] kdump: extract log buffer and registers from
 vmcore on NMI button pressing

On Thu, Jun 03, 2010 at 05:13:47PM +0200, Andi Kleen wrote:
>> > NMI would be only needed if the crash kernel is completely
>> > hosed too.
>> 
>> That's the case.
>
>You're saying it booted but is hosed after boot?
>
>That seems like a very obscure case. Is that really common?
>

Actually, I met two of this kind of cases recently.

One was stucked in early_idt_hander() during booting the second kernel,
the other one is even worse, I even can't find where it hangs.
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