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Subject: Re: [PATCH] x86: Run checksumming in parallel accross multiple alu's
From: Joe Perches <joe@perches.com>
To: Neil Horman <nhorman@tuxdriver.com>
Cc: David Laight <David.Laight@ACULAB.COM>,
        Ben Hutchings <bhutchings@solarflare.com>,
        Doug Ledford <dledford@redhat.com>, Ingo Molnar <mingo@kernel.org>,
        Eric Dumazet <eric.dumazet@gmail.com>, linux-kernel@vger.kernel.org,
        netdev@vger.kernel.org
Date: Fri, 01 Nov 2013 12:45:29 -0700
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On Fri, 2013-11-01 at 13:37 -0400, Neil Horman wrote:

> I think it would be better if we just did the prefetch here
> and re-addressed this area when AVX (or addcx/addox) instructions were available
> for testing on hardware.

Could there be a difference if only a single software
prefetch was done at the beginning of transfer before
the while loop and hardware prefetches did the rest?