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Date: Thu, 28 Feb 2008 21:13:39 +0900
From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Ingo Molnar <mingo@elte.hu>
Subject: Re: 2.6.25-rc2-mm1 - boot hangs on ia64
Cc: kosaki.motohiro@jp.fujitsu.com, Steven Rostedt <srostedt@redhat.com>,
       Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
       linux-ia64 <linux-ia64@vger.kernel.org>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Tony Luck <tony.luck@intel.com>, Ingo Molnar <mingo@redhat.com>,
       Bob Picco <bob.picco@hp.com>, Eric Whitney <eric.whitney@hp.com>
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References: <20080228192509.BDCF.KOSAKI.MOTOHIRO@jp.fujitsu.com> <20080228115041.GA22082@elte.hu>
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Hi Ingo,

> thanks for bisecting it down! Could ia64 have trouble accessing the 
> percpu data structures of the scheduler?
> 
> does the patch below resolve the hang?

Thanks!
that patch works well on my test environment.

Tested-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>


BTW: Your work is ultimate fast. it's wonderful :)