linux-kernel - Re: [RFC] arm: Add for atomic half word exchange

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Message-ID: <3482663.LChMlKYgkA@wuerfel>
Date:	Tue, 02 Jun 2015 12:49:20 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	ganguly.s@...sung.com
Cc:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	SUNEEL KUMAR SURIMANI <suneel@...sung.com>,
	VIKRAM MUPPARTHI <vikram.m@...sung.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"hpa@...or.com" <hpa@...or.com>,
	"peterz@...radead.org" <peterz@...radead.org>,
	"Waiman.Long@...com" <Waiman.Long@...com>,
	"oleg@...hat.com" <oleg@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	SHARAN ALLUR <sharan.allur@...sung.com>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>
Subject: Re: [RFC] arm: Add for atomic half word exchange

On Tuesday 02 June 2015 06:21:43 Sarbojit Ganguly wrote:
> Hello Raghavendra,
> 
> That is exactly I had done albeit from menuconfig. Basically the whole point was to make sure my patch compiles against ARM11 architectures as well. Hence I ensured the .config contains the relevant flags on. 
> 
> 

Most ARM11 implementations are ARMv6k, which has support for the instruction,
but the older ARMv6 (without k) does not. From your description, I assume
you only tested with ARMv6k, not ARMv6. Please enable the OMAP2 and IMX31
platforms to test ARMv6.

	Arnd
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