linux-kernel - Re: [PATCH] x86: Run checksumming in parallel accross multiple alu's

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1383335129.3042.10.camel@joe-AO722>
Date:	Fri, 01 Nov 2013 12:45:29 -0700
From:	Joe Perches <joe@...ches.com>
To:	Neil Horman <nhorman@...driver.com>
Cc:	David Laight <David.Laight@...LAB.COM>,
	Ben Hutchings <bhutchings@...arflare.com>,
	Doug Ledford <dledford@...hat.com>,
	Ingo Molnar <mingo@...nel.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] x86: Run checksumming in parallel accross multiple alu's

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?



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/