KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko or kvm-amd.ko. KVM also requires a modified QEMU although work is underway to get the required changes upstream. Using KVM, one can run multiple virtual machines running unmodified Linux or Windows images. Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, etc. If you'd like to build this for a kernel other than the one you're currently running, you can do something like this: KERNELVERSION=2.6.27.15 ./kvm.SlackBuild This script requires a 'kvm' group to exist before running. The recommended GID is 221. You can create it like this: groupadd -g 221 kvm After installation, add user to kvm group and re-login. Don't forget to load kernel module kvm-intel (or kvm-amd if you use AMD processors). NOTE: if 2.6.30.* or 2.6.31.* kernels are used uncomment appropriate string in slackbild.