Re: Re: [PATCH] x86: Accelerate copy_page with non-temporal in X86
From: Borislav Petkov
Date: Tue Apr 13 2021 - 10:53:38 EST
On Tue, Apr 13, 2021 at 08:54:55PM +0800, Kemeng Shi wrote:
> Yes. And NT stores should be better for copy_page especially copying a lot
> of pages as only partial memory of copied page will be access recently.
I thought "should be better" too last time when I measured rep; movs vs
NT stores but actual measurements showed no real difference.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette