linux-kernel - Re: Commit 7eaceaccab5f40 causing boot hang.

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Date:	Fri, 01 Apr 2011 08:26:37 -0400
From:	Mark Lord <kernel@...savvy.com>
To:	Jens Axboe <jaxboe@...ionio.com>
CC:	Rob Landley <rlandley@...allels.com>,
	Pete Clements <clem@...m.clem-digital.net>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
	Tejun Heo <tj@...nel.org>
Subject: Re: Commit 7eaceaccab5f40 causing boot hang.

On 11-03-31 07:09 AM, Jens Axboe wrote:
..
> 
> Data point - only seems to happen on UP. If you add -smp X to kvm, then
> it boots and works just fine. It smells oddly like some sort of irq
> event.


Like perhaps an IRQ waiting on a spinlock that's held elsewhere ?
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