[PATCH 2.32] x86: Optimizing memcpy for AMD Zen architecture.

Florian Weimer fweimer@redhat.com
Fri Oct 30 08:44:01 GMT 2020


* Sajan Karumanchi:

> [AMD Public Use]
>
> Hi Florian,
>
> The backport to 2.32 looks clean. But make sure this backporting is done on top of Patrick McGehearty patch, which tunes the non-temporal threshold '__x86_shared_non_temporal_threshold' parameter by dropping of 'threads' parameter.
>
> -       : __x86_shared_cache_size * threads * 3 / 4);
> +       : __x86_shared_cache_size * 3 / 4);

Yes, that's already on the branch.

I'm going to repost this backport patch with the follow-up fix applied.

Thanks,
Florian
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