linux-kernel - Re: [PATCH] crypto/octeontx2: By default allocate one CPT LF per CPT VF

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Message-ID: <ZXKWo66iNvgpjaJ5@gondor.apana.org.au>
Date:   Fri, 8 Dec 2023 12:08:03 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Bharat Bhushan <bbhushan2@...vell.com>
Cc:     bbrezillon@...nel.org, arno@...isbad.org, schalla@...vell.com,
        davem@...emloft.net, alobakin@...me, tj@...nel.org,
        masahiroy@...nel.org, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] crypto/octeontx2: By default allocate one CPT LF per CPT
 VF

On Wed, Nov 29, 2023 at 09:11:33PM +0530, Bharat Bhushan wrote:
> There are limited number CPT LFs (example 64 LFs on cn10k) and
> these LFs are allocated/attached to CPT VF on its creation.
> cptpf sysfs parameter "kvf_limits" defines number of CPT LFs
> per CPT VF. Default "kvf_limits" is initialized to zero and if
> kvf_limits is zero then number of LF allocated are equal to
> online cpus in system.
> 
> For example on 24 core system, 24 CPT LFs will be attached per VF.
> That means no CPT LF available when creating more than 2 CPT VFs
> on system which have total 64 LFs. Although VFs gets created but
> no LF attached to it.
> 
> There seems no reason to default allocate as many LFs as many
> online cpus in system. This patch initializes "kvf_limits" to
> one to limit one LF allocated per CPT VF. "kvf_limits" can
> be changed in range of 1 to number-of-online-cpus via sysfs.
> 
> Signed-off-by: Bharat Bhushan <bbhushan2@...vell.com>
> ---
>  drivers/crypto/marvell/octeontx2/otx2_cptpf_main.c | 1 +
>  drivers/crypto/marvell/octeontx2/otx2_cptvf_main.c | 3 +--
>  2 files changed, 2 insertions(+), 2 deletions(-)

Patch applied.  Thanks.
-- 
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