From mboxrd@z Thu Jan  1 00:00:00 1970
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
Date: Wed, 30 Oct 2013 15:25:54 +0000
Subject: [GIT PULL] prefetch support for 3.13
In-Reply-To: <527124B3.9090305@nvidia.com>
References: <20131009171312.GJ8378@mudshark.cambridge.arm.com>
 <527124B3.9090305@nvidia.com>
Message-ID: <20131030152553.GD16735@n2100.arm.linux.org.uk>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Wed, Oct 30, 2013 at 08:24:35AM -0700, Paul Walmsley wrote:
> Hi Will et al.,
>
> On 10/09/2013 10:13 AM, Will Deacon wrote:
>> Hi Russell,
>>
>> Please pull the following patches for 3.13. They add support for the pldw
>> instruction (prefetch with intent to modify) in ARMv7 SMP cores, which is
>> then used to gain a measurable performance boost for particular atomic
>> sequences.
>
> Looks like the pldw changes require binutils >= 2.21.  Might be worth  
> considering a patch to update Documentation/Changes?

Not really - because that says "for all architectures the minimum
requirement is now 2.21 or later" and that's certainly not the case.

It's only ARMv7 which requires this.