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Thu, 12 Sep 2019 08:29:41 +0000 Received: from DB3PR0502MB3964.eurprd05.prod.outlook.com ([fe80::75d2:b478:8f56:e4fd]) by DB3PR0502MB3964.eurprd05.prod.outlook.com ([fe80::75d2:b478:8f56:e4fd%4]) with mapi id 15.20.2241.022; Thu, 12 Sep 2019 08:29:41 +0000 From: Raslan Darawsheh To: Phil Yang , Yongseok Koh , Slava Ovsiienko , Matan Azrad , =?iso-8859-1?Q?N=E9lio_Laranjeiro?= , "dev@dpdk.org" CC: Thomas Monjalon , "jerinj@marvell.com" , "Honnappa.Nagarahalli@arm.com" , "gavin.hu@arm.com" , "nd@arm.com" , "stable@dpdk.org" Thread-Topic: [dpdk-dev] [PATCH 1/2] net/mlx5: fix Rx CQ doorbell synchronization on aarch64 Thread-Index: AQHVY9ng9Xb4BNlQ2Uan02hu/Hf2KKcnwKCg Date: Thu, 12 Sep 2019 08:29:41 +0000 Message-ID: References: <1567680908-31210-1-git-send-email-phil.yang@arm.com> In-Reply-To: <1567680908-31210-1-git-send-email-phil.yang@arm.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=rasland@mellanox.com; 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DIR:OUT; SFP:1101; SCL:1; SRVR:DB3PR0502MB3946; H:DB3PR0502MB3964.eurprd05.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: mellanox.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: RcXIC9xvoKVwTKGIeTzEBbQhyCXmls9u+0PbMPU+gw06SmVLbK/DsMZzxpoi8uraO985EfijiV9SCzegiaEtTiVpmjyMO1etD1Ek/u5H3eG0reRXpc/UsxwDJxoiuRppTYC1NSnm3mYanvjOokJzYdn6eBIyTRxiEnmK/X9GkmjdRY2Zu2P9ghzkT4DoJ5VbtbE84TC35OXg3iFlRLWZZt4U86+mbsWJvj5mqBF8rn0ItYxYPaDHsArXo3DDSxjN+Dww5hUt+3ivu2ORrGH506y667TGET8GeAm3QrD72WdNUxlj/VjnNodPldCH7RR1N4BWND2aY8F8byDL6KuShk9B9L7eeDddZvQaUoi/QWijJ0CZQRiDv5ONOc+mAbZ/a9BJDSqN9PhZD33wve+LiZChocqDRy1pjZYAsd0D738= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: b1f42b3b-486d-4183-39d0-08d7375b5b7f X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Sep 2019 08:29:41.1591 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Xrzw5aTQaEp2X0TJTH9ogeVSi0pV4xJZUCQ/stjmrgvGyoTI751gFO1cMsLD5B053XGSUnh4JHca80M4slks9g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB3PR0502MB3946 Subject: Re: [dpdk-dev] [PATCH 1/2] net/mlx5: fix Rx CQ doorbell synchronization on aarch64 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Hi, > -----Original Message----- > From: dev On Behalf Of Phil Yang > Sent: Thursday, September 5, 2019 1:55 PM > To: Yongseok Koh ; Slava Ovsiienko > ; Matan Azrad ; N=E9lio > Laranjeiro ; dev@dpdk.org > Cc: Thomas Monjalon ; jerinj@marvell.com; > Honnappa.Nagarahalli@arm.com; gavin.hu@arm.com; nd@arm.com; > stable@dpdk.org > Subject: [dpdk-dev] [PATCH 1/2] net/mlx5: fix Rx CQ doorbell > synchronization on aarch64 >=20 > The Rx completion queue doorbell field needs to be updated after > the last CQE decompressed. For the weaker memory model processors, > the compiler barrier is not sufficient to guarantee the order of > these operations, so use the coherent I/O memory barrier to make > sure these fields are updated in order. >=20 > Fixes: 570acdb1da8a ("net/mlx5: add vectorized Rx/Tx burst for ARM") > Cc: stable@dpdk.org >=20 > Suggested-by: Gavin Hu > Signed-off-by: Phil Yang > Reviewed-by: Gavin Hu > --- Patch applied to next-net-mlx,=20 Kindest regards, Raslan Darawsheh