From: Herbert Xu <herbert@gondor.apana.org.au>
To: "Horia Geantă" <horia.geanta@nxp.com>
Cc: Christophe LEROY <christophe.leroy@c-s.fr>,
"David S. Miller" <davem@davemloft.net>,
"linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH 16/18] crypto: talitos - do hw_context DMA mapping outside the requests
Date: Thu, 22 Feb 2018 21:46:24 +0800 [thread overview]
Message-ID: <20180222134624.GD28447@gondor.apana.org.au> (raw)
In-Reply-To: <AM0PR0402MB3329F899D4777EE356BBE2B698CD0@AM0PR0402MB3329.eurprd04.prod.outlook.com>
On Thu, Feb 22, 2018 at 12:29:28PM +0000, Horia Geantă wrote:
>
> IIUC this means that there is no room for improvement.
> This patch needs to be reverted, to restore previous behaviour when the
> hw_context was mapped / unmapped for every request.
In general we should avoid trying to do batching in drivers. Such
optimisations should instead be done at a higher level. For example,
for disk encryption we want to do the aggregation at the block layer
rather than the crypto API because that has innate knowledge of the
data layout which we can only guess.
Cheers,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
next prev parent reply other threads:[~2018-02-22 13:46 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-06 13:04 [PATCH 00/18] crypto: talitos - fixes and performance improvement Christophe Leroy
2017-10-06 13:04 ` [PATCH 01/18] crypto: talitos - fix AEAD test failures Christophe Leroy
2017-10-06 13:04 ` [PATCH 02/18] crypto: talitos - fix memory corruption on SEC2 Christophe Leroy
2017-10-06 13:04 ` [PATCH 03/18] crypto: talitos - fix setkey to check key weakness Christophe Leroy
2017-10-06 13:04 ` [PATCH 04/18] crypto: talitos - fix AEAD for sha224 on non sha224 capable chips Christophe Leroy
2017-10-06 13:04 ` [PATCH 05/18] crypto: talitos - fix use of sg_link_tbl_len Christophe Leroy
2017-10-06 13:04 ` [PATCH 06/18] crypto: talitos - fix ctr-aes-talitos Christophe Leroy
2017-10-06 13:04 ` [PATCH 07/18] crypto: talitos - zeroize the descriptor with memset() Christophe Leroy
2017-10-06 13:04 ` [PATCH 08/18] crypto: talitos - declare local functions static Christophe Leroy
2017-10-06 13:04 ` [PATCH 09/18] crypto: talitos - use devm_kmalloc() Christophe Leroy
2017-10-06 13:04 ` [PATCH 10/18] crypto: talitos - use of_property_read_u32() Christophe Leroy
2017-10-06 13:04 ` [PATCH 11/18] crypto: talitos - use devm_ioremap() Christophe Leroy
2017-10-06 13:04 ` [PATCH 12/18] crypto: talitos - don't check the number of channels at each interrupt Christophe Leroy
2017-10-06 13:04 ` [PATCH 13/18] crypto: talitos - remove to_talitos_ptr_len() Christophe Leroy
2017-10-06 13:04 ` [PATCH 14/18] crypto: talitos - simplify tests in ipsec_esp() Christophe Leroy
2017-10-06 13:05 ` [PATCH 15/18] crypto: talitos - DMA map key in setkey() Christophe Leroy
2017-10-06 13:05 ` [PATCH 16/18] crypto: talitos - do hw_context DMA mapping outside the requests Christophe Leroy
2018-02-07 14:39 ` Horia Geantă
2018-02-17 16:32 ` Christophe LEROY
2018-02-18 17:14 ` Horia Geantă
2018-02-19 7:58 ` Christophe LEROY
2018-02-19 8:30 ` Horia Geantă
2018-02-19 9:14 ` Christophe LEROY
2018-02-19 13:16 ` Horia Geantă
2018-02-20 10:34 ` Herbert Xu
2018-02-20 11:32 ` Horia Geantă
2018-02-22 11:47 ` Herbert Xu
2018-02-22 12:29 ` Horia Geantă
2018-02-22 13:46 ` Herbert Xu [this message]
2017-10-06 13:05 ` [PATCH 17/18] crypto: talitos - chain in buffered data for ahash on SEC1 Christophe Leroy
2018-03-02 17:27 ` Horia Geantă
2018-03-02 17:42 ` Christophe LEROY
2017-10-06 13:05 ` [PATCH 18/18] crypto: talitos - avoid useless copy Christophe Leroy
2017-10-12 15:19 ` [PATCH 00/18] crypto: talitos - fixes and performance improvement Herbert Xu
2017-12-08 15:20 ` Horia Geantă
2017-12-11 11:07 ` Herbert Xu
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