linux-kernel - Re: [patch] x86: test case for the RODATA config option

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Message-ID: <p731w88nc0p.fsf@crumb.suse.de>
Date:	23 Jan 2008 10:09:58 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	mingo@...e.hu, linux-kernel@...r.kernel.org
Subject: Re: [patch] x86: test case for the RODATA config option

Arjan van de Ven <arjan@...radead.org> writes:

> This patch adds a test module for the DEBUG_RODATA config
> option to make sure change_page_attr() did indeed make
> "const" data read only.

The only that this does that is not done pretty much equivalently
by pageattr-test.c (it just checks G instead of W) is testing the kernel 
text mapping on 64bit. On 32bit it is fully redundant I believe.

Testing the kernel mapping might be a good idea, but I would
suggest adding it to pageattr-test.c

Yes I'm sure these basic facts will not stop it from being 
applied anyways; just wanted to point it out for the benefit
of the list readers.

-Andi
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