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Date:   Tue, 13 Apr 2021 16:53:15 +0200
From:   Borislav Petkov <bp@alien8.de>
To:     Kemeng Shi <shikemeng@huawei.com>
Cc:     tglx@linutronix.de, mingo@redhat.com, x86@kernel.org,
        hpa@zytor.com, linux-kernel@vger.kernel.org,
        linux-nvdimm@lists.01.org
Subject: Re: Re: [PATCH] x86: Accelerate copy_page with non-temporal in X86
Message-ID: <20210413145315.GF16519@zn.tnic>
References: <3f28adee-8214-fa8e-b368-eaf8b193469e@huawei.com>
 <20210413110137.GD16519@zn.tnic>
 <bfa4fd38-0874-63b3-991a-1102af9f47a6@huawei.com>
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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