In the Virtual Machine Settings dialog box, enable the Virtualization engine options( Virtualize Intel VT-x/EPT or AMD-v/RVI and Virtualize CPU performance counters). In VMware Virtual Machine environment, install Ubuntu Server 12.04, the installation process is very simple, I will not detail here, and I chose the virtual network NAT mode. KVM Guest Operating System : CentOS 6.4 64-bit

VMware Virtual Machine Guest Operating System : Ubuntu Server 12.04.2 LTS 64-bit Official Website Environment Host Operating System : Microsoft Windows 8.1 Professional With Media Center 64-bit Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, etc. Using KVM, one can run multiple virtual machines running unmodified Linux or Windows images.

KVM also requires a modified QEMU although work is underway to get the required changes upstream. 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 (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V).

Ubuntu server virtual machine host