NetBSD 11 adds 64-bit RISC-V and a 10ms microVM kernel

NetBSD 11.0 is out, and it is the first stable version of the system that runs on 64-bit RISC-V chips. The project announced the release on July 30, 2026. That matters for two reasons. An open chip architecture gains a mature Unix, and a new kernel option boots a virtual machine in about 10 milliseconds.

NetBSD is a free Unix-like operating system, which means it behaves like Unix without using Unix code. The project's stated goal is portability: running one system on many kinds of machine. Version 11.0 is its nineteenth major release.

The project posted the news to its blog on August 1, 2026. "The NetBSD project is pleased to (finally) announce the 11.0 release!" the post said. The word in brackets is the project's own.

The 64-bit RISC-V milestone

RISC-V is an open instruction set, which is the basic vocabulary a processor understands. Anyone can design a chip around it without paying a license fee. That is why it attracts hardware startups, universities and researchers.

Version 11.0 is, in the release notes' words, "the first stable release to include support for 64-bit RISC-V platforms." The first boards supported are built on StarFive's JH71XX chips. Those are the VisionFive 2 and the PINE64 STAR64, both small single-board computers. Phoronix listed the same two boards in its report on August 1, 2026.

The release also adds preliminary support for Qualcomm Snapdragon X Elite devices. Preliminary means the system starts but the work is unfinished. Asahi Linux took a similar step for Apple hardware last week, when it added official M3 Mac support.

A kernel built for fast boots

NetBSD 11.0 ships a new kernel for x86 and amd64 machines called MICROVM. Its purpose is what the release notes describe as "extremely fast virtual machine boot." The figure the project gives is "about 10 ms."

A virtual machine is a whole simulated computer, so it normally takes seconds to start. Cutting that to milliseconds puts it near the speed of a container, which shares the host kernel instead of booting its own. The trade-off matters because a virtual machine isolates code far more strictly than a container does.

What else changed

The rest of the release is spread across the firewall, the Linux compatibility layer and the standards the system targets.

Area	Change in NetBSD 11.0
npf firewall	Adds "layer 2 and user/group filtering"
Linux compatibility	compat_linux(8) gains epoll, POSIX message queues and statx
Standards	Better "compliance with POSIX.1-2024 and C23 programming interface standards"
Platforms	Over 60 supported

The bundled developer tools also moved up.

Component	Version in 11.0
GCC	12.5.0
OpenSSL	3.5.7
GDB	15.1
SSH	10.3

Phoronix also reported SIMD-accelerated optimizations in the release. SIMD lets one instruction act on several pieces of data at once.

Putting it on a 2012 laptop

Five weeks after the release, a developer published a full manual install. The post, "NetBSD 11 from scratch", appeared on September 6, 2026. It uses a 2012 HP Pavilion with an Intel Core i7, 3.79 GB of memory and a 900 GB disk.

The guide sets up full disk encryption with CGD, NetBSD's cryptographic disk driver. It uses the adiantum cipher and derives the key with pkcs5_pbkdf2/sha1. The root partition is 50 GB.

The author gives one non-technical reason for the choice: NetBSD's stance against putting generative AI into the project.

What this means for developers

The MICROVM kernel is the piece worth testing first. If you build sandboxes, CI runners or per-request isolation, a 10 ms boot brings a real virtual machine close to container startup times. Measure it on your own workload before you trust the number, because boot time is only one part of total latency.

If you target RISC-V, NetBSD is now a second mature option beside Linux. A VisionFive 2 or STAR64 board is the cheapest way to try it. Check the drivers you need first, since first-generation support usually covers the basics only.

The compat_linux additions matter if you run Linux binaries on NetBSD. epoll and statx are common in modern server software, so a tool that failed before may work now. Test it rather than assume it.

The C23 and POSIX.1-2024 work also makes NetBSD a useful portability check. Building your C code there tends to expose assumptions that Linux and glibc quietly forgive.