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From:   Pankaj Gupta <pankaj.gupta@nxp.com>
To:     Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>,
        Horia Geanta <horia.geanta@nxp.com>,
        Varun Sethi <V.Sethi@nxp.com>,
        Gaurav Jain <gaurav.jain@nxp.com>,
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        "linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Iuliana Prodan <iuliana.prodan@nxp.com>
Subject: RE: [PATCH 0/5] Remove CRYPTO_ALG_ALLOCATES_MEMORY flag
Thread-Topic: [PATCH 0/5] Remove CRYPTO_ALG_ALLOCATES_MEMORY flag
Thread-Index: AQHZjYwfsEMWykr3yU+l+9icR15kza+A27Sw
Date:   Thu, 8 Jun 2023 11:45:46 +0000
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References: <20230523153421.1528359-1-meenakshi.aggarwal@nxp.com>
In-Reply-To: <20230523153421.1528359-1-meenakshi.aggarwal@nxp.com>
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Reviewed-By: Pankaj Gupta <pankaj.gupta@nxp.com>

> -----Original Message-----
> From: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
> Sent: Tuesday, May 23, 2023 9:04 PM
> To: Horia Geanta <horia.geanta@nxp.com>; Varun Sethi <V.Sethi@nxp.com>;
> Pankaj Gupta <pankaj.gupta@nxp.com>; Gaurav Jain <gaurav.jain@nxp.com>;
> herbert@gondor.apana.org.au; davem@davemloft.net; linux-
> crypto@vger.kernel.org; linux-kernel@vger.kernel.org; Iuliana Prodan
> <iuliana.prodan@nxp.com>
> Cc: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
> Subject: [PATCH 0/5] Remove CRYPTO_ALG_ALLOCATES_MEMORY flag
>=20
> From: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
>=20
> This series includes patches to remove CRYPTO_ALG_ALLOCATES_MEMORY
> flag and allocate the required memory within the crypto request object.
>=20
> CRYPTO_ALG_ALLOCATES_MEMORY flag is limited only to dm-crypt use-cases,
> which seems to be 4 entries maximum.
> Therefore in reqsize we allocate memory for maximum 4 entries for src and=
 1
> for IV, and the same for dst, both aligned.
> If the driver needs more than the 4 entries maximum, the memory is
> dynamically allocated, at runtime.
>=20
> Meenakshi Aggarwal (5):
>   crypto:caam - avoid allocating memory at crypto request runtime for
>     skcipher
>   crypto:caam - avoid allocating memory at crypto request runtime for
>     aead
>   crypto: caam - avoid allocating memory at crypto request runtime for
>     hash
>   crypto: caam/qi - avoid allocating memory at crypto request runtime
>   crypto: caam/qi2 - avoid allocating memory at crypto request runtime
>=20
>  drivers/crypto/caam/caamalg.c     | 138 +++++++---
>  drivers/crypto/caam/caamalg_qi.c  | 131 +++++++---
> drivers/crypto/caam/caamalg_qi2.c | 421 ++++++++++++++++++++----------
>  drivers/crypto/caam/caamalg_qi2.h |   6 +
>  drivers/crypto/caam/caamhash.c    |  77 ++++--
>  5 files changed, 542 insertions(+), 231 deletions(-)
>=20
> --
> 2.25.1