Linux Kernel 6.9 is Released: This is What's New for Compute Express Link (CXL)

Linux Kernel 6.9 is Released: This is What's New for Compute Express Link (CXL)

The Linux Kernel 6.9 release brings several improvements and additions related to Compute Express Link (CXL) technology.

New Features

Here is a list of new features for CXL:

Here is the detailed list of all commits merged into the 6.9 Kernel for CXL and DAX. This list was generated by the Linux Kernel CXL Feature Tracker .

The Library Landscape: Why Build Another One?

The Library Landscape: Why Build Another One?

Series: Building lib3mf-rs

This post is part of a 5-part series on building a comprehensive 3MF library in Rust:

  1. Part 1: My Journey Building a 3MF Native Rust Library from Scratch
  2. Part 2: The Library Landscape - Why Build Another One?
  3. Part 3: Into the 3MF Specification Wilderness - Reading 1000+ Pages of Specifications
  4. Part 4: Design for Developers - Features, Flags, and the CLI
  5. Part 5: Reflections and What’s Next - Lessons from Building lib3mf-rs

“Why not just use the existing library?”

It’s a fair question. One I asked myself many times during the early days of this project. The 3MF Consortium maintains lib3MF , a comprehensive C++ implementation used by major companies in additive manufacturing. Why build another one?

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How I Created a Custom ChatGPT Trained on the CXL Specification Documents

How I Created a Custom ChatGPT Trained on the CXL Specification Documents

If you’re working with Compute Express Link (CXL) and wish you had an AI assistant trained on all the different versions of the specification—1.0, 1.1, 2.0, 3.0, 3.1… you’re in luck.

Whether you’re a CXL device vendor, a firmware engineer, a Linux Kernel developer, a memory subsystem architect, a hardware validation engineer, or even an application developer working on CXL tools and utilities, chances are you’ve had to reference the CXL spec at some point. And if you have, you already know: these documents are dense, extremely technical, and constantly evolving.

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How To Install a Mainline Linux Kernel in Ubuntu

Note: This article was updated on Thursday, July 31st, 2025 and will work with newer Ubuntu releases.

By default, Ubuntu systems run with the Ubuntu kernels provided by the Ubuntu repositories. To get unmodified upstream kernels that have new features or to confirm that upstream has fixed a specific issue, we often need to install the mainline Kernel. The mainline kernel is the most recent version of the Linux kernel released by the Linux Kernel Organization. It undergoes several stages of development, including merge windows, release candidates, and final releases. Mainline kernels are designed to offer the latest features and improvements, making them attractive to developers and power users. Kernel.org lists the available Kernel versions.

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