A virtualization configuration is made on the QEMU. KVM resides in Linux kernel and there is a little configuration for it. QEMU acts as a hardware supplier and KVM is the CPU. But with the KVM Qemu get superfast speed for computing by using hardware-based virtualization. Before KVM and XEN QEMU was used heavily but it can not race with VMWARE or VIRTUAL PC.
Qemu is a very old virtualization technology used to virtualize system components and run operating systems on it.
