ACRN Hypervisor

What ACRN Hypervisor is

ACRN Hypervisor is a free, open source reference hypervisor for embedded IoT development. It is a Type 1 stack that runs directly on Intel x86 bare-metal hardware. Guest virtual machines can run Linux, Windows, or an RTOS such as Zephyr; the project also lists VxWorks, Xenomai, Celadon, and Android. ACRN provides CPU, I/O, and networking virtualization, with I/O mediators for sharing graphics and audio functions across virtual machines. Its resource partitioning is designed to let safety-critical and non-safety-critical domains coexist on one system-on-chip. The ACRN Device Model provides a framework for virtual device emulation. The project describes its codebase as less than 40K lines and says it delivers low latency, fast boot times, and responsive hardware communication. It supports nested virtualization and uses a command-line management interface. Source code is available in a public GitHub repository, documentation is online, and community support is offered through mailing lists, IRC channels, and monthly technical meetings. The source is licensed under BSD 3-Clause.

Who it suits

ACRN suits developers working on embedded IoT systems for Intel x86 bare-metal hardware, particularly where multiple guest operating systems or safety-critical and non-safety-critical domains must coexist.

Getting started

1. Visit the ACRN project website.
2. Review the online project documentation.
3. Access the source code in the public GitHub repository.
4. Use the free BSD 3-Clause plan on Linux or a self-hosted environment.

Verdict

ACRN offers virtualization, device emulation, and resource partitioning for embedded systems on a specified hardware host. Its bare-metal requirement and CLI management make the target environment important to assess.