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dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.161 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.161) by CY4PEPF0000EE3A.mail.protection.outlook.com (10.167.242.14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7135.14 via Frontend Transport; Mon, 25 Dec 2023 11:20:21 +0000 Received: from rnnvmail201.nvidia.com (10.129.68.8) by mail.nvidia.com (10.129.200.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Mon, 25 Dec 2023 03:20:11 -0800 Received: from localhost (10.126.230.35) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Mon, 25 Dec 2023 03:20:11 -0800 Date: Mon, 25 Dec 2023 13:20:08 +0200 From: Leon Romanovsky To: Jim Harris CC: Bjorn Helgaas , "linux-pci@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Jason Gunthorpe , "Alex Williamson" Subject: Re: [PATCH 1/2] Revert "PCI/IOV: Serialize sysfs sriov_numvfs reads vs writes" Message-ID: <20231225112008.GB59971@unreal> References: <170311143880.2826.17853753430536108145.stgit@bgt-140510-bm01.eng.stellus.in> <170311309712.2826.11254260046040224092.stgit@bgt-140510-bm01.eng.stellus.in> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Dec 2023 11:20:21.6536 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c0216ef9-f45d-4be7-37fe-08dc053b7bc7 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EE3A.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9402 On Wed, Dec 20, 2023 at 10:58:17PM +0000, Jim Harris wrote: > The proper way to detect a change to the num_VFs value is to listen for a > sysfs event, not to add a device_lock() on the attribute _show() in the > kernel. > > This reverts commit 35ff867b76576e32f34c698ccd11343f7d616204. > Revert had a small conflict, the sprintf() is now changed to sysfs_emit(). > > Suggested-by: Leon Romanovsky > Signed-off-by: Jim Harris > --- > drivers/pci/iov.c | 8 +------- > 1 file changed, 1 insertion(+), 7 deletions(-) > Thanks, Reviewed-by: Leon Romanovsky