Rust OSDev Operating System Development in Rust

This Month in Rust OSDev: November 2025

Published on (edited by @phil-opp)

Welcome to a new issue of "This Month in Rust OSDev". In these posts, we give a regular overview of notable changes in the Rust operating system development ecosystem.

This series is openly developed on GitHub. Feel free to open pull requests there with content you would like to see in the next issue. If you find some issues on this page, please report them by creating an issue or using our comment form at the bottom of this page.

Announcements, News, and Blog Posts

Here we collect news, blog posts, etc. related to OS development in Rust.

Infrastructure and Tooling

In this section, we collect recent updates to rustc, cargo, and other tooling that are relevant to Rust OS development.

rust-osdev Projects

In this section, we give an overview of notable changes to the projects hosted under the rust-osdev organization.

New Crate: mem_barrier

Maintained by @mkroening

This crate provides cross-architecture, no-std memory barriers.

When compiling with optimizations, the compiler may try to improve performance by reordering independent memory accesses and instructions. Modern CPUs use similar techniques for improving performance, such as out-of-order execution. Memory barriers affect both the compiler and the CPU by restricting reordering of certain memory operations across these barriers respective to other CPUs or devices, allowing proper communication with them.

See the docs for details!

bootloader

Maintained by @phil-opp and @Freax13

The bootloader crate implements a custom Rust-based bootloader for easy loading of 64-bit ELF executables. This month, we merged the following changes:

Thanks to @peppergrayxyz for their contribution!

pci_types

Maintained by @IsaacWoods

The pci_types library provides types for accessing and configuring PCI devices from Rust operating systems. We merged the following change this month:

Thanks to @cagatay-y for their contribution!

uefi-rs

Maintained by @GabrielMajeri, @nicholasbishop, and @phip1611

uefi makes it easy to develop Rust software that leverages safe, convenient, and performant abstractions for UEFI functionality.

We merged the following PRs this month:

Thanks to @seijikun, @jasonbking, @JayKickliter, @crawfxrd, @RenTrieu, @rymdbar, and @splaled for their contributions!

x86_64

Maintained by @phil-opp, @josephlr, and @Freax13

The x86_64 crate provides various abstractions for x86_64 systems, including wrappers for CPU instructions, access to processor-specific registers, and abstraction types for architecture-specific structures such as page tables and descriptor tables.

We merged the following PRs this month:

Thanks to @Restioson for their contribution!

Other Projects

In this section, we describe updates to Rust OS projects that are not directly related to the rust-osdev organization. Feel free to create a pull request with the updates of your OS project for the next post.

phil-opp/blog_os

(Section written by @phil-opp)

We merged the following changes to the Writing an OS in Rust blog this month:

  • Add Portuguese (pt-BR) translation
    • for all 12 posts
    • thanks a lot to @richarddalves for this contribution!

Join Us?

Are you interested in Rust-based operating system development? Our rust-osdev organization is always open to new members and new projects. Just let us know if you want to join! A good way for getting in touch is our Zulip chat.

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