linux-kernel - Re: [PATCH] crypto: octeontx2: disable DMA black hole on an DMA fault

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Message-ID: <Yf39a4NJglaf0eDy@gondor.apana.org.au>
Date:   Sat, 5 Feb 2022 15:30:35 +1100
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Shijith Thotton <sthotton@...vell.com>
Cc:     Arnaud Ebalard <arno@...isbad.org>,
        Boris Brezillon <bbrezillon@...nel.org>,
        Srujana Challa <schalla@...vell.com>,
        linux-crypto@...r.kernel.org, jerinj@...vell.com,
        sgoutham@...vell.com, "David S. Miller" <davem@...emloft.net>,
        Linu Cherian <lcherian@...vell.com>,
        Geetha sowjanya <gakula@...vell.com>,
        hariprasad <hkelam@...vell.com>,
        Subbaraya Sundeep <sbhatta@...vell.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:MARVELL OCTEONTX2 RVU ADMIN FUNCTION DRIVER" 
        <netdev@...r.kernel.org>
Subject: Re: [PATCH] crypto: octeontx2: disable DMA black hole on an DMA fault

On Tue, Jan 25, 2022 at 11:56:23PM +0530, Shijith Thotton wrote:
> From: Srujana Challa <schalla@...vell.com>
> 
> When CPT_AF_DIAG[FLT_DIS] = 0 and a CPT engine access to
> LLC/DRAM encounters a fault/poison, a rare case may result
> in unpredictable data being delivered to a CPT engine.
> So, this patch adds code to set FLT_DIS as a workaround.
> 
> Signed-off-by: Srujana Challa <schalla@...vell.com>
> Signed-off-by: Shijith Thotton <sthotton@...vell.com>
> ---
>  drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c | 13 +++++++++++++
>  drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c |  1 +
>  2 files changed, 14 insertions(+)

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