Announcements

Annoucing Release of GUK (Project Guest VM Microkernel)

admin

admin

— 1 min read

From xen-devel:
I am pleased to announce the release of GUK (Project Guest VM Microkernel), which is an enhanced version of Mini-OS that underpins the Guest VM virtual machine. Guest VM is an implementation of the Java platform, written almost completely in Java, running directly on Xen. Although GUK was developed specifically for Guest VM, it can be used stand-alone in a similar way to Mini-OS.
The main differences between Mini-OS, when originally forked, and GUK are:
•    Support for multiple VCPUS (SMP)
•    Pre-emptive thread scheduling
•    Memory management tailored to a language run time virtual machine
•    Memory ballooning
•    Block device support
•    Suspend/Resume support
N.B. GUK has not been updated with any of the changes to Mini-OS since the initial fork.
The source code, which is licensed under GPL v2, can be found at https://kenai.com/projects/guestvm.
E.g.,
% hg clone https://kenai.com/hg/guestvm~guk guk
I’d like to acknowledge the significant contributions made by Grzegorz Milos and Harald Roeck during summer internships at Sun.
Mick Jordan

Read more

OSS Japan 2025: A Breakthrough Year for Open Automotive Innovation
12/16/2025

The Xen Project is back from Open Source Summit Japan and Automotive Linux Summit 2025. This year’s event felt like a true watershed moment for the automotive industry and for open source. Across talks, demos, and hallway conversations, one thing was clear: open source is now a foundational pillar

Read more
🛠️ Engineering Trust: How Xen’s Open CI Powers Global, Hardware-Level Testing
07/10/2025

In safety-critical industries like automotive and industrial systems, trust is non-negotiable. When building software that controls critical hardware, like braking systems or factory automation, you need confidence. The software must behave exactly as intended. Every time. On the actual device. That's why the Xen Project is investing in

Read more
🛠️ Xen Summit 2025: Find Your Place in the Future of Virtualization
06/27/2025

The annual Xen Summit is right around the corner, and there has never been a more exciting time to be part of the Xen Project. As enterprise and industrial needs shift and proprietary vendors rethink their licensing, the industry is ready for strong, open alternatives. Xen stands out not only

Read more
Let’s Grow Xen Together!
03/18/2025

Xen is open, secure, and built for the future. As the new Community Manager, I’m focused on growing the Xen community, welcoming new contributors, and ensuring a thriving ecosystem. Let’s build the future of virtualization together!

Read more