XEN PV Calls backend driver

modulename: pvcalls-back.ko


Linux Kernel Configuration
└─>Device Drivers
└─>Xen driver support
└─>XEN PV Calls backend driver
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Experimental backend for the Xen PV Calls protocol
(https://xenbits.xen.org/docs/unstable/misc/pvcalls.html). It
allows PV Calls frontends to send POSIX calls to the backend,
which implements them.

If in doubt, say n.

source code: