2005•USENIX Annual Technical ConferenceRequires access

QEMU, a fast and portable dynamic translator

Fabrice Bellard

Abstract

We present the internals of QEMU, a fast machine emulator using an original portable dynamic translator. It emulates several CPUs (x86, PowerPC, ARM and Sparc) on several hosts (x86, PowerPC, ARM, Sparc, Alpha and MIPS). QEMU supports full system emulation in which a complete and unmodified operating system is run in a virtual machine and Linux user mode emulation where a Linux process compiled for one target CPU can be run on another CPU.

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Key concepts: x86, PowerPC, Emulation, Operating system, Computer science, Virtual machine, ARM architecture, Embedded system