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Wed, 16 Jun 2021 23:51:18 +0000 Received: from [172.27.0.196] (172.20.187.6) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 16 Jun 2021 23:51:11 +0000 Subject: Re: [PATCH 09/11] PCI: add matching checks for driver_override binding To: Jason Gunthorpe CC: Alex Williamson , , , , , , , , , , , , , , , , , , References: <20210615204216.GY1002214@nvidia.com> <20210615155900.51f09c15.alex.williamson@redhat.com> <20210615230017.GZ1002214@nvidia.com> <20210615172242.4b2be854.alex.williamson@redhat.com> <20210615233257.GB1002214@nvidia.com> <20210615182245.54944509.alex.williamson@redhat.com> <20210616003417.GH1002214@nvidia.com> <20210616233317.GR1002214@nvidia.com> <20210616234437.GS1002214@nvidia.com> From: Max Gurtovoy Message-ID: <6c97caa0-f6f6-11c8-9870-4f08f6f8d6a0@nvidia.com> Date: Thu, 17 Jun 2021 02:51:09 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210616234437.GS1002214@nvidia.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Originating-IP: [172.20.187.6] X-ClientProxiedBy: HQMAIL111.nvidia.com (172.20.187.18) To HQMAIL107.nvidia.com (172.20.187.13) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 9749edf4-7686-4c93-e895-08d93121a2b0 X-MS-TrafficTypeDiagnostic: DM6PR12MB3452: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2733; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.112.34;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:schybrid03.nvidia.com;CAT:NONE;SFS:(4636009)(376002)(39860400002)(396003)(346002)(136003)(36840700001)(46966006)(36860700001)(26005)(6862004)(426003)(316002)(16526019)(356005)(47076005)(54906003)(82740400003)(186003)(8676002)(16576012)(4326008)(5660300002)(2616005)(6636002)(478600001)(70206006)(336012)(53546011)(7636003)(70586007)(36906005)(4744005)(31686004)(37006003)(8936002)(31696002)(82310400003)(36756003)(86362001)(2906002)(43740500002);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jun 2021 23:51:18.0901 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9749edf4-7686-4c93-e895-08d93121a2b0 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.34];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT059.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB3452 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 6/17/2021 2:44 AM, Jason Gunthorpe wrote: > On Thu, Jun 17, 2021 at 02:42:46AM +0300, Max Gurtovoy wrote: > >> Do you see a reason not adding this alias for stub drivers but >> adding it to vfio_pci drivers ? > It creates uABI without a userspace user and that is strongly > discouraged. The 'stub_pci:' prefix becomes fixed ABI. so is it better to have "pci:v*d*sv*sd*bc*sc*i*" for stub drivers ? or not adding alias at all if stub flag is set ? > > Jason