linux-kernel - Re: [PATCH 3/4] Check whether pages are poisoned before copying

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Message-ID: <20110317225541.GK11094@one.firstfloor.org>
Date:	Thu, 17 Mar 2011 23:55:41 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Andrea Arcangeli <aarcange@...hat.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Huang Ying <ying.huang@...el.com>,
	Jin Dongming <jin.dongming@...css.fujitsu.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] Check whether pages are poisoned before copying

> I meant the testsuite using MCE injection, called mce-test. I've run
> it a couple of times for some hugetlbfs collision with THP (solved
> some time ago).

This won't hit small code windows like that.

> I'm unsure if there's already coverage for it in mce-test yet, the
> biggest test I run was hugetlbfs related (MAP_ANONYMOUS|MAP_HUGETLB or
> filebacked or still shm). Surely it'd be good idea to add THP
> coverage.

Sounds like a good idea. Feel free to contribute a test case.
-Andi
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