John, On 6/7/25 02:10, John Levon wrote:
The series contains an implement of a vfio-user client in QEMU, along with a few more preparatory patches.The vfio-user protocol allows for implementing (PCI) devices in another userspace process; SPDK is one example, which includes a virtual NVMe implementation. The vfio-user framework consists of 3 parts: 1) The VFIO user protocol specification. 2) A client - the VFIO device in QEMU that encapsulates VFIO messages and sends them to the server. 3) A server - a remote process that emulates a device. This patchset implements parts 1 and 2. It has been tested against libvfio-user test servers as well as SPDK.
Is libvfio-user a server-only library ? It seems a bit odd not to use it on the client side. Anyhow, We have now merged upstream all the prerequisite changes for vfio-user. This gives us about 1 month to fix regressions and merge the model for the vfio-user-pci device, its documentation and tests. I *really* would prefer if we had functional tests although I don't how complex it would be. At least an initial framework would be good to have. More sophisticated scenarios, such as mappings and interrupts, can come later. Thanks, C.
