KVM is a Linux-based full virtualization tool which utilizes the virutalization extensions available with several models of Intel and AMD processors.
KVM will only work on systems with processors offer virtualization support. To find out if a system's processor supports virtualization you can look in /proc/cpuinfo for the vmx (Intel) or svm (AMD) flags. This command should do the trick:
egrep '(vmx|svm)' --color=always /proc/cpuinfo
NPG Systems With Virtualization Support
Installing the Software
If you're using a RHEL system you need to enable the virtualization add-on entitlement to your RHEL license. You can install the packages via yum. This is the list of packages you will need:
libvirt-python kvm virt-manager libvirt kvm-qemu-img kmod-kvm kvm-tools python-virtinst