linux-kernel - Re: [PATCH v5] RO/NX protection for loadable kernel modules

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Message-ID: <87ocrq9rs6.fsf@basil.nowhere.org>
Date:	Sun, 12 Jul 2009 11:25:45 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Rusty Russell <rusty@...tcorp.com.au>, Ingo Molnar <mingo@...e.hu>,
	Siarhei Liakh <sliakh.lkml@...il.com>,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	James Morris <jmorris@...ei.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@....de>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, linux-cris-kernel@...s.com
Subject: Re: [PATCH v5] RO/NX protection for loadable kernel modules

Arjan van de Ven <arjan@...radead.org> writes:
>
> or using a non-power-of-two get_free_pages() thing...

alloc_pages_exact(). Was developed for exactly this purpose originally.

But it doesn't work on x86-64 again for modules.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
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