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Wysocki" , , , , Paolo Bonzini , "Samuel Ortiz" , Mona Hossain , Megha Dey , , "Linux Kernel Mailing List" , Linux PCI , KVM list Subject: Re: [PATCH v4 00/17] Add VFIO mediated device support and DEV-MSI support for the idxd driver Message-ID: <20201102185130.GB3600342@nvidia.com> References: <20201030193045.GM2620339@nvidia.com> <20201030204307.GA683@otc-nc-03> <87h7qbkt18.fsf@nanos.tec.linutronix.de> <20201031235359.GA23878@araj-mobl1.jf.intel.com> <20201102132036.GX2620339@nvidia.com> <20201102162043.GB20783@otc-nc-03> <20201102171909.GF2620339@nvidia.com> <20d7c5fc-91b0-d673-d41a-335d91ca2dce@intel.com> <20201102182632.GH2620339@nvidia.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: MN2PR04CA0033.namprd04.prod.outlook.com (2603:10b6:208:d4::46) To DM6PR12MB3834.namprd12.prod.outlook.com (2603:10b6:5:14a::12) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from mlx.ziepe.ca (156.34.48.30) by MN2PR04CA0033.namprd04.prod.outlook.com (2603:10b6:208:d4::46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3499.18 via Frontend Transport; Mon, 2 Nov 2020 18:51:32 +0000 Received: from jgg by mlx with local (Exim 4.94) (envelope-from ) id 1kZevS-00FSUS-Pl; Mon, 02 Nov 2020 14:51:30 -0400 X-LD-Processed: 43083d15-7273-40c1-b7db-39efd9ccc17a,ExtAddr DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1604343096; bh=Afw655/llzzLOfVWWTyt/IVjZ826sj/GF4kenspUmMY=; h=ARC-Seal:ARC-Message-Signature:ARC-Authentication-Results:Date: From:To:CC:Subject:Message-ID:References:Content-Type: Content-Disposition:In-Reply-To:X-ClientProxiedBy:MIME-Version: X-MS-Exchange-MessageSentRepresentingType:X-LD-Processed; b=rMC5O6cMyjDQa1CQPTi/IhODP5InUMGg4CyNZ9xsl7IgSGJNKo1Qwjw6TySt79ERC AvlzWDHAu9Qf2yj+BRzhA6c5ITlwHGdTKgQ80Y0p05ReZdsxLMBO9X/WJ9taAu2rOj lpfptxL+ezsje0dkRvfegqBezfYhnvZxiaMyxl06D6iel8v0k+fJqQ7sen7OCi2Tw8 /wiDKduFgtMTjnr2mHMMpKjM4/3JfX9uzcUQHejGNYf8xzAD9rKNixfqj9zfZo7CyR DBsRsjOkJlMDjNBPLgxyMEuhohZLHmFmzRk5nWyR1aLY2qFySXwBPGKbt71pwOxDNS +e/opjNzQDY/Q== Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Mon, Nov 02, 2020 at 10:38:28AM -0800, Dan Williams wrote: > > I think you will be the first to use the namespace stuff for this, it > > seems like a good idea and others should probably do so as well. > > I was thinking either EXPORT_SYMBOL_NS, or auxiliary bus, because you > should be able to export an ops structure with all the necessary > callbacks. 'or'? Auxiliary bus should not be used with huge arrays of function pointers... The module providing the device should export a normal linkable function interface. Putting that in a namespace makes a lot of sense. Jason