linux-kernel - Re: [PATCH] ARM: Fix r7/r11 confusion when CONFIG_THUMB2

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Date:	Tue, 30 Jul 2013 10:49:04 +0100
From:	Will Deacon <will.deacon@....com>
To:	Jean-Francois Moine <moinejf@...e.fr>
Cc:	Dave P Martin <Dave.Martin@....com>,
	Robert Richter <rric@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jed Davis <jld@...illa.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Russell King <linux@....linux.org.uk>,
	"oprofile-list@...ts.sf.net" <oprofile-list@...ts.sf.net>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] ARM: Fix r7/r11 confusion when CONFIG_THUMB2_KERNEL=y
 [OT]

On Tue, Jul 30, 2013 at 10:38:53AM +0100, Jean-Francois Moine wrote:
> BTW, kernels compiled with gcc-4.8 don't work.

Erm. Can you elaborate please? There was an issue where SLUB would get
miscompiled with 4.8 due to some per-cpu variable reordering across
barrier(), but I fixed that for ARM in 3.10.

... or are you referring specifically to the unwinder?

Will
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