From: Sebastian Siewior Subject: Re: [PATCH -mm crypto] AES: x86_64 asm implementation optimization Date: Fri, 25 Apr 2008 09:37:51 +0200 Message-ID: <20080425073751.GC4460@Chamillionaire.breakpoint.cc> References: <1207723262.18313.37.camel@caritas-dev.intel.com> <20080416073108.GA13494@Chamillionaire.breakpoint.cc> <1208333949.4322.5.camel@caritas-dev.intel.com> <20080416184016.GA21365@Chamillionaire.breakpoint.cc> <1208403403.4322.27.camel@caritas-dev.intel.com> <20080423223221.GB16683@Chamillionaire.breakpoint.cc> <1209093077.20936.24.camel@caritas-dev.intel.com> <20080425071258.GA4460@Chamillionaire.breakpoint.cc> <1209108087.20936.30.camel@caritas-dev.intel.com> Reply-To: Sebastian Siewior Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Cc: Herbert Xu , "Adam J. Richter" , akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de To: "Huang, Ying" Return-path: Received: from Chamillionaire.breakpoint.cc ([85.10.199.196]:44831 "EHLO Chamillionaire.breakpoint.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753679AbYDYHh4 (ORCPT ); Fri, 25 Apr 2008 03:37:56 -0400 Content-Disposition: inline In-Reply-To: <1209108087.20936.30.camel@caritas-dev.intel.com> Sender: linux-crypto-owner@vger.kernel.org List-ID: * Huang, Ying | 2008-04-25 15:21:27 [+0800]: >Hi, Sebastian, Hi Huang, >> >So I think the reason maybe the read/write port throughput of CPU. >> Ah so it is just a local problem you say? I may get my fingers on >> another amd box.... > >I mean the read/write port design difference between CPU >micro-architecture. It is not a local problem. Sorry for my English. No, that is what I meant somehow. It is possible that AMD improved this in a later CPU generation. The AMD box I have is a pretty old one in comparison to Intel's dual core. It is also possible that they are aiming a different target and nothing changed :) >Best Regards, >Huang Ying Sebastian