virtio_balloon — VirtIO Memory Balloon driver

       The virtio_balloon device driver provides support for VirtIO memory balloon devices.

       The  memory balloon allows the guest to, at the request of the hypervisor, return memory allocated to the
       hypervisor so it can be made available to other guests.  The hypervisor can later signal the  balloon  to
       return the memory.

       The  virtio_balloon  driver  was  written by Bryan Venteicher <bryanv@FreeBSD.org>.  It first appeared in
       FreeBSD 9.0.

Debian                                          January 22, 2012                               VIRTIO_BALLOON(4)

       virtio_balloon — VirtIO Memory Balloon driver

virtio(4)

       To compile this driver into the kernel, place the following lines in your kernel configuration file:

             devicevirtio_balloon

       Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

             virtio_balloon_load="YES"