linux-kernel - Re: [PATCH] coresight-stm: adding driver for CoreSight STM component

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Message-ID: <20150225171658.GF8656@n2100.arm.linux.org.uk>
Date:	Wed, 25 Feb 2015 17:16:58 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Paul Bolle <pebolle@...cali.nl>
Cc:	mathieu.poirier@...aro.org, al.grant@....com,
	linux-doc@...r.kernel.org, jeenu.viswambharan@....com,
	gregkh@...uxfoundation.org, corbet@....net, liviu.dudau@....com,
	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	pratikp@...eaurora.org, linux-arm-kernel@...ts.infradead.org,
	kaixu.xia@...aro.org
Subject: Re: [PATCH] coresight-stm: adding driver for CoreSight STM component

On Thu, Feb 05, 2015 at 12:27:31PM +0100, Paul Bolle wrote:
> I'm _guessing_ that CPU_32v4 and CPU_32v4T are needed for the ldrd and
> strd assembler instructions. If that's right a next _guess_ would be
> that you also need to mention CPU_32v3 here.

No.  Double word instructions are available in some ARMv5 (ARMv5TE and
up) and from ARMv6.

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