Description:

QEMU is a fast processor emulator using dynamic translation to
achieve good emulation speed.

QEMU has two operating modes:

* Full system emulation. In this mode, QEMU emulates a full system
(for example a PC), including a processor and various
peripherals. It can be used to launch different Operating
Systems without rebooting the PC or to debug system code.
* User mode emulation (Linux host only). In this mode, QEMU can
launch Linux processes compiled for one CPU on another CPU. It
can be used to launch the Wine Windows API emulator or to ease
cross-compilation and cross-debugging.

As QEMU requires no host kernel patches to run, it is very safe and
easy to use.