LookingGlass/module
Geoffrey McRae 788f885759 [kvmfr] added the ability to obtain a dmabuf of the ivshmem memory
This is to enable the ability to use dri3 to create dmabuf backed
pixmaps directly.
2020-01-13 13:39:24 +11:00
..
dkms.conf Rewrite dkms.conf 2019-06-06 13:40:06 +10:00
kvmfr.c [kvmfr] added the ability to obtain a dmabuf of the ivshmem memory 2020-01-13 13:39:24 +11:00
Makefile [kvmfr] added the ability to obtain a dmabuf of the ivshmem memory 2020-01-13 13:39:24 +11:00
README.md [module] update instructions and add dkms.conf 2019-05-23 18:46:27 +10:00
test.c [kvmfr] added the ability to obtain a dmabuf of the ivshmem memory 2020-01-13 13:39:24 +11:00

This kernel module implements a basic interface to the IVSHMEM device for LookingGlass when using LookingGlass in VM->VM mode.

Compiling (Manual)

Make sure you have your kernel headers installed first, on Debian/Ubuntu use the following command.

apt-get install linux-headers-$(uname -r)

Then simply run make and you're done.

Loading

This module requires the uio module to be loaded first, loading it is as simple as:

modprobe uio
insmod kvmfr.ko

Compiling & Installing (DKMS)

You can install this module into DKMS so that it persists across kernel upgrades. Simply run:

dkms install .

Loading

Simply modprobe the module:

modprobe kvmfr

Usage

This will create the /dev/uio0 node that represents the KVMFR interface. To use the interface you need permission to access it by either creating a udev rule to ensure your user can read and write to it, or simply change it's ownership manually, ie:

sudo chown user:user /dev/uid0

Usage with looking glass is simple, you only need to specify the path to the device node, for example:

./looking-glass-client -f /dev/uio0 -L 16