linux-kernel - Re: [tip:x86/debug] x86/kdump: No need to disable ioapic/ lapic in crash path

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Message-ID: <CAE9FiQVLnyRB+pAqi22C5mCbHOOVKxsBhQKaB6P0p9f2LBL8bA@mail.gmail.com>
Date:	Sat, 11 Feb 2012 20:17:43 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...hat.com, hpa@...or.com,
	torvalds@...ux-foundation.org, kexec@...ts.infradead.org,
	vgoyal@...hat.com, akpm@...ux-foundation.org, tglx@...utronix.de,
	dzickus@...hat.com, mingo@...e.hu,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/debug] x86/kdump: No need to disable ioapic/ lapic in
 crash path

On Sat, Feb 11, 2012 at 7:13 PM, Eric W. Biederman
<ebiederm@...ssion.com> wrote:
> Yinghai Lu <yinghai@...nel.org> writes:
>> After reverting this commit, kdump is working again.
>>
>> So assume you need to drop this patch.
>
> It sounds like there is a bug in ioapic initialization in the context of
> VT-d.  Where do you fail?
>
before get debug print out from second kernel, the system get reset.

Yinghai
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