linux-kernel - Re: [PATCH v2 10/30] Add x86-specific parity functions

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Message-ID: <20160407094117.GC3866@pd.tnic>
Date:	Thu, 7 Apr 2016 11:41:17 +0200
From:	Borislav Petkov <bp@...e.de>
To:	Zeng Zhaoxiu <zhaoxiu.zeng@...il.com>
Cc:	zengzhaoxiu@....com, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, dvlasenk@...hat.com, akpm@...ux-foundation.org,
	dvyukov@...gle.com, keescook@...omium.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 10/30] Add x86-specific parity functions

On Thu, Apr 07, 2016 at 11:55:22AM +0800, Zeng Zhaoxiu wrote:
> __sw_parity32 is faster than __sw_hweight32.
> I don't know how many CPUs do not support the popc, if they are outdated,
> use __arch_hweight32 is the easiest way.

I don't really understand what you're trying to tell me here. And it's
not like I didn't try.

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
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