[PATCHv3] powerpc: Replace lxvd2x/stxvd2x with lvx/stvx in P7's memcpy/memmove

[Tulio Magno Quites Machado Filho]

Adhemerval Zanella <adhemerval.zanella@linaro.org> writes:

> On 20/10/2017 17:22, Tulio Magno Quites Machado Filho wrote:
>> From: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
>>
>> POWER9 DD2.1 and earlier has an issue where some cache inhibited
>> vector load traps to the kernel, causing a performance degradation.  To
>> handle this in memcpy and memmove, lvx/stvx is used for aligned
>> addresses instead of lxvd2x/stxvd2x.
>>
>> Reference: https://patchwork.ozlabs.org/patch/814059/
>>
>> 2017-10-20  Rajalakshmi Srinivasaraghavan  <raji@linux.vnet.ibm.com>
>>
>> 	* sysdeps/powerpc/powerpc64/power7/memcpy.S: Replace
>> 	lxvd2x/stxvd2x with lvx/stvx.
>> 	* sysdeps/powerpc/powerpc64/power7/memmove.S: Likewise.
>>
>> Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
>
> |Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>|

Pushed as 63da5cd4a09.

Thanks!

-- 
Tulio Magno