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From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 2 Nov 2016 09:02:06 -0600
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Subject: Re: [PATCH 01/12] extarray: define helpers for arrays defined in
 linker scripts
To: Richard Biener <rguenther@suse.de>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>,
        Peter Zijlstra <peterz@infradead.org>,
        "Luis R. Rodriguez" <mcgrof@kernel.org>,
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On Wed, Nov 2, 2016 at 6:14 AM, Richard Biener <rguenther@suse.de> wrote:
>
> Note while this change restored the old behavior this change was _not_
> intended to fix this particular fallout (it was to fix an inconsistency
> with respect to comparing addresses of symbols that can be interposed).
> It just happens that your externs can be interposed with ELF.

I think it should in general work for the kernel too, since as far as
I can tell, it fundamentally fixes the issue that linker scripts will
set symbol addresses to possibly alias other symbols.

So from a compiler standpoint, I think our "begin/end" linker script
symbols can be seen as interposing a larger array and give bounds for
it. No>

                  Linus