[GIT PULL] prefetch support for 3.13

[Russell King - ARM Linux]

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.