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Fri, 20 Mar 2020 16:13:21 +0000 Subject: Re: [PATCH v9 0/9] enable CAAM's HWRNG as default To: Andrey Smirnov , Herbert Xu , Greg Kroah-Hartman Cc: linux-crypto@vger.kernel.org, Chris Healy , Lucas Stach , Iuliana Prodan , linux-kernel@vger.kernel.org, linux-imx@nxp.com, Laurentiu Tudor , Stuart Yoder , Andrei Botila References: <20200319161233.8134-1-andrew.smirnov@gmail.com> From: =?UTF-8?Q?Horia_Geant=c4=83?= Message-ID: Date: Fri, 20 Mar 2020 18:13:18 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 In-Reply-To: <20200319161233.8134-1-andrew.smirnov@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-ClientProxiedBy: AM3PR05CA0089.eurprd05.prod.outlook.com (2603:10a6:207:1::15) To VI1PR0402MB3485.eurprd04.prod.outlook.com (2603:10a6:803:7::25) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.0.129] (84.117.251.185) by AM3PR05CA0089.eurprd05.prod.outlook.com (2603:10a6:207:1::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2835.20 via Frontend Transport; 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X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData: Ol1bAsluEc/VyNGeD+2/jqtK9gu6V5Z3XU1gSsk/14/DdICRgPHg9MHsDkRLSGxgepbWGyUYR5L+AnrtvQoJlpum6NgAfDhd64VfQs4MEhEjn616+GpVghrBFR5PMx6EebZn0QjQlCss8SZonqJx2Q== X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 174c8ecd-7f28-41a7-4d35-08d7cce99be3 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Mar 2020 16:13:21.5143 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: sPvxZcuIH4WrH2T5pVkm1ysdEU4mk/PtS5rbiDaBId1cM1MQpc0QYJ+DVMh+LryP6jfykARDixJUEOoWlR6p+Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0402MB2862 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On 3/19/2020 6:12 PM, Andrey Smirnov wrote: > Everyone: > > This series is a continuation of original [discussion]. I don't know > if what's in the series is enough to use CAAMs HWRNG system wide, but > I am hoping that with enough iterations and feedback it will be. > Andrey, thanks for the effort! Herbert, Greg, I hope it's ok to go with the fsl-mc bus dependency "bus: fsl-mc: add api to retrieve mc version" https://patchwork.kernel.org/patch/11447637/ included in this series through cryptodev-2.6 tree. It applies cleanly on latest linux-next (next-20200320), and it has been Acked-by Laurențiu (one of the fsl-mc bus maintainers). Thank you, Horia [...] > > Andrei Botila (1): > bus: fsl-mc: add api to retrieve mc version > > Andrey Smirnov (8): > crypto: caam - allocate RNG instantiation descriptor with GFP_DMA > crypto: caam - use struct hwrng's .init for initialization > crypto: caam - drop global context pointer and init_done > crypto: caam - simplify RNG implementation > crypto: caam - check if RNG job failed > crypto: caam - invalidate entropy register during RNG initialization > crypto: caam - enable prediction resistance in HRWNG > crypto: caam - limit single JD RNG output to maximum of 16 bytes > > drivers/bus/fsl-mc/fsl-mc-bus.c | 33 +-- > drivers/crypto/caam/Kconfig | 1 + > drivers/crypto/caam/caamrng.c | 405 ++++++++++++-------------------- > drivers/crypto/caam/ctrl.c | 88 +++++-- > drivers/crypto/caam/desc.h | 2 + > drivers/crypto/caam/intern.h | 7 +- > drivers/crypto/caam/jr.c | 13 +- > drivers/crypto/caam/regs.h | 7 +- > include/linux/fsl/mc.h | 16 ++ > 9 files changed, 276 insertions(+), 296 deletions(-) >