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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM6PR11MB3723.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3f7ce7be-c52d-4e9b-daef-08db777e0a23 X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Jun 2023 02:19:02.2467 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: vZN5Vzf0ShpLD0bL/2ejTJAOXp6Og+QBNXwBKZL7JGT8EWu9A+1rlGZb3wZS5Vyrkb8jGZMtDSPi/S1snvVG/w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR11MB5913 X-OriginatorOrg: intel.com X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org > -----Original Message----- > From: Thomas Monjalon > Sent: Wednesday, June 28, 2023 08:12 > To: Wu, Jingjing ; Guo, Junfeng > > Cc: dev@dpdk.org; stable@dpdk.org; He, Xingguang > ; Laatz, Kevin ; > Richardson, Bruce > Subject: Re: [PATCH] examples/ntb: remove redundant logic for dev close >=20 > 14/06/2023 07:14, Junfeng Guo: > > During EAL cleanup stage, all bus devices are cleaned up properly. > > Based on this, there is no need to do extra device close process, > > which may call the dev ops '*dev->dev_ops->dev_close' twice. > > > > If this dev ops for ntb was called twice, the interrupt handle for > > EAL will be disabled twice and will lead to error for the seconde > > time. Like this: "EAL: Error disabling MSI-X interrupts for fd xx" >=20 > You should fix ntb to not disable interrupt twice. Thanks for the comment! Yes, it is exactly what this patch did. The interrupt disabling process is part of 'dev_close' ops, and will be called twice (one in EAL cleanup, another in ntb example cleanup). Now that fixed & covered by the EAL cleanup, there is no need to run dev_close at ntb example. Just remove that redundant logic. Regards, Junfeng >=20