Editing Virtual machine (section)

==== Hardware-assisted virtualization ====
{{Main|Hardware-assisted virtualization}}

In hardware-assisted virtualization, the hardware provides architectural support that facilitates building a virtual machine monitor and allows guest OSes to be run in isolation.<ref name="Uhlig_2005"/>
Hardware-assisted virtualization was first introduced on the IBM System/370 in 1972, for use with [[VM (operating system)|VM/370]], the first virtual machine operating system offered by IBM as an official product.<ref>Randal, A. (2019). The Ideal Versus the Real: Revisiting the History of Virtual Machines and Containers.</ref>

In 2005 and 2006, [[Intel]] and [[Advanced Micro Devices|AMD]] provided additional hardware to support virtualization. Sun Microsystems (now [[Oracle Corporation]]) added similar features in their [[SPARC T3|UltraSPARC T-Series]] processors in 2005.  Examples of virtualization platforms adapted to such hardware include [[Kernel-based Virtual Machine|KVM]], [[VMware Workstation]], [[VMware Fusion]], [[Hyper-V]], [[Windows Virtual PC]], [[Xen]], [[Parallels Desktop for Mac]], [[Oracle VM Server for SPARC]], [[VirtualBox]] and [[Parallels Workstation]].

In 2006, first-generation 32- and 64-bit x86 hardware support was found to rarely offer performance advantages over software virtualization.<ref name="Adams_2006"/>