Based on this approach, any OS can be virtualized with the help of Binary Translation and direct execution-based technique. In this approach, the Guest OS is placed on a higher ring and the kernel code is translated by the hypervisor (virtualization software) to have the effect on the virtual hardware on which it is running. The hypervisor translates all the OS instructions on the fly:
The hypervisor gives virtual machines all the services provided by the hardware such as virtual BIOS, virtual memory, and access to virtual devices. The user code that typically runs on Ring 3 is directly executed ...
