On Fri, Mar 26, 2021 at 03:31:57AM +0900, Keith Busch wrote: > The NVMe IO queue resources are assignable just like the MSIx vectors. > But they're not always assigned 1:1. For example: But this is all driver configuration, the driver might be running in some VM. It seems saner to have two kernel interfaces, one used in the hypervisor on the PF to setup the MSI vector count And a second interface that becomes available after the driver is bound to configure the driver, where-ever/how-ever that driver may be running. I don't know how you could combine them in one step except for the simple case of the driver running in the hypervisor? Jason