linux-kernel - Re: [PATCH RFC] x86:Improve memset with general 64bit instruction

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Message-ID: <20140413220334.GE22728@two.firstfloor.org>
Date:	Mon, 14 Apr 2014 00:03:34 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Ling Ma <ling.ma.program@...il.com>
Cc:	Andi Kleen <andi@...stfloor.org>, mingo@...hat.com,
	tglx@...utronix.de, hpa@...or.com, neleai@...nam.cz,
	linux-kernel@...r.kernel.org, Ling Ma <ling.ml@...baba-inc.com>
Subject: Re: [PATCH RFC] x86:Improve memset with general 64bit instruction

On Sun, Apr 13, 2014 at 11:11:59PM +0800, Ling Ma wrote:
> Any further comments  ?

It would be good to test on some more machines that you don't cause
regressions.

But I'm not aware of any workload that is doing a lot of memset (not
counting clear_page).  Copies likely matter much more.

-Andi
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