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Date: Thu, 4 Aug 2005 07:04:24 -0700 (PDT)
From: Christoph Lameter <christoph@lameter.com>
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To: Richard Purdie <rpurdie@rpsys.net>
cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org,
       nickpiggin@yahoo.com.au
Subject: Re: 2.6.13-rc3-mm3
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On Thu, 4 Aug 2005, Richard Purdie wrote:

> On Wed, 2005-08-03 at 17:19 -0700, Christoph Lameter wrote:
> > Could you try the following patch? I think the problem was that higher 
> > addressses were not mappable via the page fault handler. This patch 
> > inserts the pmd entry into the pgd as necessary if the pud level is 
> > folded.
> 
> I tried this patch against 2.6.13-rc4-mm1 and there was no change - X
> still hung in memcpy as before and the cmpxchg_fail_flag_update just
> increases...

Is there some way you can give us more information about the problem? 
Something that would allow us to determine where the thing is looping?