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Wed, 5 Feb 2025 10:47:21 -0500 (EST) From: Thomas Monjalon <thomas@monjalon.net> To: Bruce Richardson <bruce.richardson@intel.com> Cc: Renyong Wan <wanry@yunsilicon.com>, dev@dpdk.org, ferruh.yigit@amd.com, stephen@networkplumber.org, qianr@yunsilicon.com, nana@yunsilicon.com, zhangxx@yunsilicon.com, xudw@yunsilicon.com, jacky@yunsilicon.com, weihg@yunsilicon.com Subject: Re: [PATCH v7 04/15] net/xsc: add xsc dev ops to support VFIO driver Date: Wed, 05 Feb 2025 16:47:20 +0100 Message-ID: <2301554.KTMopqUuYO@thomas> In-Reply-To: <Z6N8vYkKc01RQu2p@bricha3-mobl1.ger.corp.intel.com> References: <20250128144649.1956159-1-wanry@yunsilicon.com> <2040007.zToM8qfIzz@thomas> <Z6N8vYkKc01RQu2p@bricha3-mobl1.ger.corp.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org 05/02/2025 15:59, Bruce Richardson: > On Wed, Feb 05, 2025 at 03:43:30PM +0100, Thomas Monjalon wrote: > > 05/02/2025 15:37, Renyong Wan: > > > On 2025/2/5 19:44, Thomas Monjalon wrote: > > > > 28/01/2025 15:46, Renyong Wan: > > > >> XSC PMD is designed to support both VFIO and private kernel drivers. > > > > What's the benefit of private kernel drivers? Why are they private? > > > > > > Hello Thomas, > > > > > > Thanks for your review. > > > > > > It can support the bifurcation model without unbinding the kernel > > > driver, by utilizing our private kernel driver in conjunction with > > > rdma-core. Currently, our kernel driver is not open-source, so it is > > > considered a private kernel driver. This patch series only supports the > > > VFIO driver. Our kernel driver is currently in the process of being > > > open-sourced on kernel.org, and once it is available there, we also > > > plan to submit the code that supports our kernel driver to DPDK. > > > > OK that's interesting, thank you. > > > > I think it would be the first DPDK driver to support both VFIO or > > bifurcated model. > > > > Not quite the first, but possibly the first net driver? :-). The idxd > dmadev driver supports both. It can be used either with VFIO or the kernel > idxd driver. It announces only VFIO: RTE_PMD_REGISTER_KMOD_DEP(IDXD_PMD_DMADEV_NAME_PCI, "vfio-pci"); How does it work?