linux-kernel - Re: dm-crypt: Performance Regression 2.6.37 -> 2.6.38-rc8

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Message-ID: <20110312010552.GA28515@gondor.apana.org.au>
Date:	Sat, 12 Mar 2011 09:05:52 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	Milan Broz <mbroz@...hat.com>,
	Mario 'BitKoenig' Holbe <Mario.Holbe@...Ilmenau.DE>,
	dm-crypt@...ut.de, linux-kernel@...r.kernel.org,
	Alasdair G Kergon <agk@...hat.com>
Subject: Re: dm-crypt: Performance Regression 2.6.37 -> 2.6.38-rc8

On Fri, Mar 11, 2011 at 10:36:54AM -0800, Andi Kleen wrote:
>
> It needs some glue according to Herbert. I forgot the details.

As we don't want to have pcrypt default on it needs to be loaded
by hand.  What we lack is a clean way to instantiate it.

For now you have to do something like

modprobe tcrypt alg="pcrypt(authenc(hmac(sha1-generic),cbc(aes-asm)))" type=3

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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