On Thu, Aug 24, 2023 at 09:15:21AM -0700, Reinette Chatre wrote: > Access from a guest to a virtual device may be either 'direct-path', > where the guest interacts directly with the underlying hardware, > or 'intercepted path' where the virtual device emulates operations. > > Support emulated interrupts that can be used to handle 'intercepted > path' operations. For example, a virtual device may use 'intercepted > path' for configuration. Doing so, configuration requests intercepted > by the virtual device driver are handled within the virtual device > driver with completion signaled to the guest without interacting with > the underlying hardware. Why does this have anything to do with IMS? I thought the point here was that IMS was some back end to the MSI-X emulation - should a purely emulated interrupt logically be part of the MSI code, not IMS? Jason