Xen virtual block device support

modulename: xen-blkfront.ko

configname: CONFIG_XEN_BLKDEV_FRONTEND

Linux Kernel Configuration
└─>Device Drivers
└─>Block devices
└─>Xen virtual block device support
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
This driver implements the front-end of the Xen virtual
block device driver. It communicates with a back-end driver
in another domain which drives the actual block device.

source code: