linux-kernel - Re: Kernel panic due to page migration accessing memory holes

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Message-ID: <20100219083006.GA19649@n2100.arm.linux.org.uk>
Date:	Fri, 19 Feb 2010 08:30:06 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Michael Bohan <mbohan@...eaurora.org>
Cc:	Mel Gorman <mel@....ul.ie>, linux-arm-kernel@...ts.infradead.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	linux-arm-msm@...r.kernel.org
Subject: Re: Kernel panic due to page migration accessing memory holes

On Thu, Feb 18, 2010 at 05:47:28PM -0800, Michael Bohan wrote:
> I am actually using the pfn_valid implementation FLATMEM in  
> arch/arm/include/asm/memory.h.  This one is very similar to the  
> asm-generic, and has no knowledge of the holes.

Later kernels have a pfn_valid() which does have hole functionality.
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