PCIE PERIPHERAL SHARING

A peripheral proxy subsystem provides routing mechanisms to allow multiple hosts to communicate with multiple functions, physical and virtual, of a single root I/O virtualization (SR-IOV) peripheral, which may include a physical function and a plurality of virtual functions associated with the physical function. The peripheral proxy subsystem, which may be embodied as a controller, includes a first endpoint interface; a second endpoint interface; and a single root controller interface configured to couple to the SR-IOV peripheral. The controller is configured to be able to present through the single root controller interface: a first subset of the plurality of virtual functions through a first cloned instance of the physical function at the first endpoint interface; and a second subset of the plurality of virtual functions through a second cloned instance of the physical function at the second endpoint interface.