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Date: Fri, 05 Apr 2013 08:30:45 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Ingo Molnar <mingo@kernel.org>
CC: Kees Cook <keescook@chromium.org>, linux-kernel@vger.kernel.org,
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        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
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        Matthew Garrett <mjg@redhat.com>,
        Matt Fleming <matt.fleming@intel.com>,
        Eric Northup <digitaleric@google.com>,
        Dan Rosenberg <drosenberg@vsecurity.com>,
        Julien Tinnes <jln@google.com>, Will Drewry <wad@chromium.org>,
        Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 3/3] x86: kernel base offset ASLR
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On 04/05/2013 01:04 AM, Ingo Molnar wrote:
> 
> Random runtime shuffling of the kernel image - is that possible with 
> existing toolchains?
> 

Yes... the question is how much work we'd be willing to go through to
make it happen.

One approach: the kernel already contains a linker -- used for modules
-- and the bulk of the kernel could actually be composed to a "pile of
modules" that gets linked on boot.  This would provide very large
amounts of randomness.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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