userspace grant access device driver

modulename: xen-gntdev.ko

configname: CONFIG_XEN_GNTDEV

Linux Kernel Configuration
└─>Device Drivers
└─>Xen driver support
└─>userspace grant access device driver
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
Allows userspace processes to use grants.

source code: