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

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Message-ID: <87lhwevk98.fsf@rustcorp.com.au>
Date:	Thu, 13 Mar 2014 14:10:35 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Kees Cook <keescook@...omium.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andrew Honig <ahonig@...gle.com>,
	Michal Marek <mmarek@...e.cz>,
	"x86\@kernel.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

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.

Cheers,
Rusty.
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