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Mon, 7 Jun 2021 18:28:08 +0000 Received: from BL0PR12MB5506.namprd12.prod.outlook.com ([fe80::3d51:a3b9:8611:684e]) by BL0PR12MB5506.namprd12.prod.outlook.com ([fe80::3d51:a3b9:8611:684e%6]) with mapi id 15.20.4195.030; Mon, 7 Jun 2021 18:28:08 +0000 Date: Mon, 7 Jun 2021 15:28:06 -0300 From: Jason Gunthorpe To: "Tian, Kevin" Cc: Alex Williamson , Cornelia Huck , Kirti Wankhede , "Jiang, Dave" , "tglx@linutronix.de" , "vkoul@kernel.org" , "Raj, Ashok" , "Dey, Megha" , "Pan, Jacob jun" , "Liu, Yi L" , "Lu, Baolu" , "Kumar, Sanjay K" , "Luck, Tony" , "Williams, Dan J" , "eric.auger@redhat.com" , "pbonzini@redhat.com" , "dmaengine@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" Subject: Re: [PATCH v6 00/20] Add VFIO mediated device support and DEV-MSI support for the idxd driver Message-ID: <20210607182806.GN1002214@nvidia.com> References: <162164243591.261970.3439987543338120797.stgit@djiang5-desk3.ch.intel.com> <20210523232219.GG1002214@nvidia.com> <86cde154-37c7-c00d-b0c6-06b15b50dbf7@intel.com> <20210602231747.GK1002214@nvidia.com> <20210603014932.GN1002214@nvidia.com> <20210603214009.68fac0c4.alex.williamson@redhat.com> Content-Type: text/plain; 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X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?Y+Qx6ZnxtiidePQg0O8Psq4GjOHjE2IWl7WgcpmDtXpoufMlr3W38IUOPQc4?= =?us-ascii?Q?ijF7hjbxuoF8LBuJ7RM2m/Jn0INzpEaxBrN4hAEmIaEFpwRj2TpIJYhCP8XO?= =?us-ascii?Q?agPmpmBlRCv48HM3IDomt/sDyBykD+GO/lS6W/jCNv6yxVNd4+hq0b5+10ia?= =?us-ascii?Q?Vs1AN6z+WieeOEN+chKQ1yawFHiDce1d0BxmMaMYBgmgILpukkpQjtOXGR3J?= =?us-ascii?Q?t8BoYP+SNIUtTuMefoOCIC/4Hgdm2/0r4ReWJzoZOldqJ9rfAj+a8STHrr6T?= =?us-ascii?Q?mRF1v54czq5p5bcIt587eWz5347d5ClaOm3lL/6C2SUAimK/164Ga6tbHE29?= =?us-ascii?Q?yoEaSVQ/jiQH05XD+YIunjCREyyrcCZCaZ0OcBWSr1mCUhamolxPyX27Aari?= =?us-ascii?Q?OGwXnGl4i624ThOEOJkC8yCSP3XIs3BrsC1gaW8HYJEnn7RsltRoi0vSbR0Q?= =?us-ascii?Q?TnBVGkOTmZsaUrLCVafvoOkJsFztAmfuro6K3f5xgMxrqJ0S+l3+Pid0+C+n?= =?us-ascii?Q?BZPfh6vftRZ71BrxE9Fh0t8TjPSQQpP2dqUvtEONvbDbhj05xq0STXncaI4U?= =?us-ascii?Q?SFl3tvDx1q9y/jidK8fGCzJFnEOrvsN7mPf9md5OeYQSsWlf1b8MbqMQ/VWI?= =?us-ascii?Q?F5XWr7wI0WikX5mf+kGHJoN+NsfitJCF89kidkm7qH5Q3tM4zBIYd/BmPPDn?= =?us-ascii?Q?c18qV2hS8A1b8lw2/5Rn356YAAB+yBjxAbvRkcjGV2629ItaWc0MDBDWDH/E?= =?us-ascii?Q?1awEecgfwe/qHM9Rc9HqOpYSFMhboqiJ4KOllurY6OAcsMuZdbaWYHQg+Hf2?= =?us-ascii?Q?6Lbme+lb8O9CV5L+8n7A/F83Pqgw3QrtuAsN/S4GsIi072dUxDYOIK1UTHoD?= =?us-ascii?Q?zuvj8MgvoGgm+iZ1KcX8kJIFR4l2W0UBXOfv9CQWH1FQC3cT7UI9G6g5G9Ka?= =?us-ascii?Q?JnwAoP22tyYgloW6gWIzu13CTHKDbEbLy4zYvMiYIfdEdkbC9WRCHLnILjMu?= =?us-ascii?Q?d0ifRp5Ib+Lw9hUA/AJ0yQ04ffocxckSJwWg2Z9IsoBF60ke43sloK0drprf?= =?us-ascii?Q?b2rIf5GmSjLW0zcQ3LH1FXkeiK3AZYG2DOgSgTOakHtxnWsY3cdrdFG+/Ano?= =?us-ascii?Q?hf60+jZA+KvJYxELP2rMUie4mdZ2J+P1jVnmxmKRzdRZbbEx2DKkFS/KKMQA?= =?us-ascii?Q?Nl6bebAyyi7sPEW3EtTaHXBU14oo6wJ4bft9Ay52S7vx1zKiY2BSCBfs7a+f?= =?us-ascii?Q?URQKLOsWz+JbjTe6WpiCUhzPbh2qc07HQVnTFebZlxrOmnOmjEJr04TUgGzj?= =?us-ascii?Q?DjUPu2+fWZu5UhyHLiha+Pvo?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8128a290-34ff-44a4-8d87-08d929e1ff7e X-MS-Exchange-CrossTenant-AuthSource: BL0PR12MB5506.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jun 2021 18:28:08.2421 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: TovpuJvDVGFTl7AxfhGLS6N8rqaPFr2Z+zi9twYpGXJRwVUTwQE9faLb3nYrQcHW X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR12MB5319 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org On Mon, Jun 07, 2021 at 06:22:08AM +0000, Tian, Kevin wrote: > > btw I'm not clear what the netlink interface will finally be, especially > about whether any generic cmd should be defined cross devices given > that subdevice management still has large generality. Jason, do you have > an example somewhere which we can take a look regarding to mlx > netlink design? Start here: https://lore.kernel.org/netdev/20210120090531.49553-1-saeed@kernel.org/ devlink is some more generic way to control PCI/etc devices as some side band to their usual uAPI interfaces like netlink/rdma/etc Jason