linux-kernel - Re: [PATCH v2 2/2] kallsyms: handle special absolute symbols

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Message-ID: <CAGXu5jJvbdLqCNwrbrV-k-j2-=mDuccoodu3OuQg6eEduCvkqQ@mail.gmail.com>
Date:	Wed, 12 Mar 2014 23:23:37 -0700
From:	Kees Cook <keescook@...omium.org>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andrew Honig <ahonig@...gle.com>,
	Michal Marek <mmarek@...e.cz>,
	"x86@...nel.org" <x86@...nel.org>, Tejun Heo <tj@...nel.org>,
	Tony Luck <tony.luck@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>, linux-ia64@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] kallsyms: handle special absolute symbols

On Wed, Mar 12, 2014 at 8:40 PM, Rusty Russell <rusty@...tcorp.com.au> wrote:
> Kees Cook <keescook@...omium.org> writes:
>> Why not just do this with 0-base-address detection like my v2? That
>> would mean we don't need to remember to add this flag in the future to
>> imagined new architectures that might want this 0-based per_cpu
>> feature.
>
> Because future architectures will get this right and emit absolute
> symbols.  I hope!
>
> I'm swamped at the moment, but am hoping to investigate that for
> x86-64.  This is a stop-gap.

Okay, I'm convinced. :)

Acked-by: Kees Cook <keescook@...omium.org>

Thanks!

-Kees

-- 
Kees Cook
Chrome OS Security
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