linux-kernel - Re: [PATCH soc] ARM: use ARM_SINGLE

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Message-ID: <555F5194.4040309@linaro.org>
Date:	Fri, 22 May 2015 16:56:04 +0100
From:	Daniel Thompson <daniel.thompson@...aro.org>
To:	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Arnd Bergmann <arnd@...db.de>
CC:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Stefan Agner <stefan@...er.ch>,
	Russell King <linux@....linux.org.uk>, manabian@...il.com,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>, olof@...om.net
Subject: Re: [PATCH soc] ARM: use ARM_SINGLE_ARMV7M for ARMv7-M platforms

On 22/05/15 16:29, Maxime Coquelin wrote:
> 2015-05-22 16:50 GMT+02:00 Arnd Bergmann <arnd@...db.de>:
>> [one small request as I have four armv7-m folks on Cc already:
>>   could one of you try to fix the warning that I get with every
>>   single build: "/git/arm-soc/arch/arm/kernel/head-nommu.S: Assembler
>> messages: /git/arm-soc/arch/arm/kernel/head-nommu.S:167: Warning:
>> Use of r13 as a source register is deprecated when r15 is the
>> destination register."]
>
> Moving r13 to r12 and returning r12 seems to do the job (see below).
> But I don't know if there is a more elegant way, and if it is also
> valid for other architectures than armv7-m.

Why not just s/r13/r11/?

(works for me but I'm only working on single core system)
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