From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Xianghua Xiao <xiaoxianghua@gmail.com>
Cc: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH] Fix DEBUG_PAGEALLOC on 603/e300
Date: Thu, 29 Apr 2010 08:29:50 +1000 [thread overview]
Message-ID: <1272493790.24542.109.camel@pasglop> (raw)
In-Reply-To: <y2te6bf505b1004281215n9dcc6190j9915aa27ae91f75d@mail.gmail.com>
On Wed, 2010-04-28 at 14:15 -0500, Xianghua Xiao wrote:
> This change works me on a 834x(e300) platform, tested with lmbench and
> a production-ready application with 2.6.33.3.
But have you tested that DEBUG_PAGEALLOC actually works ? :-)
A way to do that is to
- get_free_pages a page
- read from it
- free it
- write to it
It should oops on the write, and I suspect that without my patch it
doesn't.
Cheers,
Ben.
next prev parent reply other threads:[~2010-04-28 22:29 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-28 7:22 [PATCH] Fix DEBUG_PAGEALLOC on 603/e300 Benjamin Herrenschmidt
2010-04-28 19:15 ` Xianghua Xiao
2010-04-28 19:46 ` Kim Phillips
2010-04-28 22:29 ` Benjamin Herrenschmidt [this message]
2010-05-02 10:27 ` Maindoor
2010-05-03 14:19 ` Xianghua Xiao
2010-05-04 5:13 ` Benjamin Herrenschmidt
2010-05-06 8:23 ` Maindoor
2010-05-06 13:04 ` Maindoor
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