Changes

Under kernel level virtualization the host operating system runs on a specially modified kernel which contains extensions designed to manage and control multiple guest opearting systems running virtual machineseach containing a guest operating system. Unlike shared kernel virtualization each guest runs its own kernel , although similar restrictions apply in that the guest operating systems must have been compiled for the same hardware as the kernel in which they are running. Examples of kernel level virtualization technologies include user Mode Linux (UML) and KVM.