Date: Tue, 7 Apr 2009 22:47:09 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org
Subject: Re: [PATCH] [0/16] POISON: Intro
Message-Id: <20090407224709.742376ff.akpm@linux-foundation.org>
In-Reply-To: <20090407509.382219156@firstfloor.org>
References: <20090407509.382219156@firstfloor.org>
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On Tue,  7 Apr 2009 17:09:56 +0200 (CEST) Andi Kleen <andi@firstfloor.org> wrote:

> Upcoming Intel CPUs have support for recovering from some memory errors. This
> requires the OS to declare a page "poisoned", kill the processes associated
> with it and avoid using it in the future. This patchkit implements
> the necessary infrastructure in the VM.

Seems that this feature is crying out for a testing framework (perhaps
it already has one?).  A simplistic approach would be

	echo some-pfn > /proc/bad-pfn-goes-here

A slightly more sophisticated version might do the deed from within a
timer interrupt, just to get a bit more coverage.

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