linux-kernel - Re: [PATCH -mm crypto] AES: x86_64 asm implementation optimization

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Message-ID: <20080425073751.GC4460@Chamillionaire.breakpoint.cc>
Date:	Fri, 25 Apr 2008 09:37:51 +0200
From:	Sebastian Siewior <linux-crypto@...breakpoint.cc>
To:	"Huang, Ying" <ying.huang@...el.com>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	"Adam J. Richter" <adam@...drasil.com>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
	mingo@...e.hu, tglx@...utronix.de
Subject: Re: [PATCH -mm crypto] AES: x86_64 asm implementation optimization

* 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
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