linux-kernel - Re: [PATCH] x86-64: typo in __assign_irq_vector when updating pos for vector and offset

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Message-ID: <m14ptw1zs6.fsf@ebiederm.dsl.xmission.com>
Date:	Sun, 22 Oct 2006 03:10:49 -0600
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Muli Ben-Yehuda <muli@...ibm.com>
Cc:	Yinghai Lu <yinghai.lu@....com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...e.de>
Subject: Re: [PATCH] x86-64: typo in __assign_irq_vector when updating pos for vector and offset

Muli Ben-Yehuda <muli@...ibm.com> writes:

> On Sun, Oct 22, 2006 at 02:35:19AM -0600, Eric W. Biederman wrote:
>
>> Ugh.  This is no fun at all.  I am assuming this is with cpu hotplug
>> disabled in flat mode.
>
> Correct.
>
>> If my wild set of hypothesis are true the patch below might make those
>> symptoms go away.  It isn't a real fix by any means but it is an
>> easy test patch I can generate to generate these giant leaps 
>> of deduction, I'm taking in the middle of the night :)
>
> Yeap, this fixes it. Thanks to you and YL for the quick debugging!
>
> May I suggest you CC me in the future on patches in this area and I'll
> give them a quick spin before they hit mainline? less pain for
> everyone involved :-)

:)

Well we still need to fix it right so there should be a couple of more
iterations.  I need to sleep on the problem first though :)

Eric
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