linux-kernel - Re: [patch] mm: sparsemem memory_present() memory corruption fix

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Message-ID: <Pine.LNX.4.64.0804151745440.6876@schroedinger.engr.sgi.com>
Date:	Tue, 15 Apr 2008 17:46:46 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Yinghai Lu <yhlu.kernel@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	linux-kernel@...r.kernel.org, Mel Gorman <mel@....ul.ie>,
	Nick Piggin <npiggin@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, apw@...dowen.org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [patch] mm: sparsemem memory_present() memory corruption fix

On Wed, 16 Apr 2008, Ingo Molnar wrote:

> this is the only call to memory_present() we do in 32-bit arch setup, so 
> it's required.

We could clip there if SPARSEMEM is configured. I wonder if this affects 
other platforms that need HIGHMEM support?
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