On 2025/2/5 22:43, 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. > How will we choose which one to use? With devargs? > > That's how we designed it. We designed a low-level device operations framework named xsc_dev_ops to support both VFIO drivers and kernel drivers. Each xsc_dev_ops is registered before the main function runs. During the PCI device probe phase, the XSC PMD selects the corresponding xsc_dev_ops based on rte_pci_device->driver, therefore, there is no need for devargs.
Thank you. -- Best regards, Renyong Wan
