Xen Project 4.16 Release Notes
Xen Project 4.16.0 was released on 2nd of December 2021.
Xen Project 4.16.0 is the work of 8 months of development.
Also see Xen Project 4.16 Acknowledgements
New Feature Highlights
The list of new features can be found on the following page: Xen Project 4.16 Feature List
You can find information on support status (including security support) for various features in SUPPORT.md and Hypervisor Support Matrix.
Documentation is available online: Xen 4.16 Documentation
Xen requires gcc v4.1.2 or later (x86), gcc 4.9 or later (arm32), or gcc 5.1 or later (arm64).
First of all you will have to get the Xen 4.16 source code, which you can either download through our release tarball (including signature) from our download page. Alternatively, you can get the source in the following way:
- With a recent enough git (>= 22.214.171.124) just clone and checkout the proper tag (RELEASE-4.16.0) from the xen.git repo directly:
git clone -b RELEASE-4.16.0 https://xenbits.xen.org/git-http/xen.git
Build instructions can be found at Compiling Xen From Source or Compiling Xen From Source on NetBSD.
Changes affecting downstreams and users
In general, our aim is to keep old guests working on new versions of Xen, and to allow live migration from the previous Xen major version.
- The old qemu-xen-traditional stubdomain device model (ioemu-stubdom) is deprecated and no longer built by default.
- The old pv-grub Xen fork is also deprecated and no longer built by default. Support to run in PV mode has been added to upstream Grub project.
While we do the utmost to make the release perfect, there are always fixes which are not quite complete on time. We will add those here. So if you run into trouble, please check this section.
Currently known issues are: none.