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

How To Install and Boot Microsoft Hyper-V 2019 from Persistent Memory (or not)

• How to

In a previous post  I described how to install and boot Fedora Linux using only Persistent Memory, no SSDs are required. For this follow on post, I attempted to install Microsoft Windows Server 2022 onto the persistent memory.

TL;DR - I was able to select the PMem devices as the install disk, but when the installer begins to write data, we get an “Error code: 0xC0000005”. I haven’t found a solution to this problem (yet).

Linux 7.2 Seeds "Blackwell-Next": A Deep Dive into the nvgrace-gpu VFIO CXL DVSEC Change

• Steve Scargall
• Cxl , Linux

Linux 7.2’s VFIO pull request dropped a commit with a codename I hadn’t seen before: Blackwell-Next. A Phoronix post brought this to my attention - Linux 7.2 Begins Making Preparations For NVIDIA “Blackwell-Next” - which, on the face of it looks like a minor prep patch. It is — but it’s also a clean window into where NVIDIA is taking its CPU-coherent GPU stack, how CXL is quietly becoming the standard signaling interface for next-generation accelerators, and what that means if you’re building infrastructure or tooling on top of these platforms.

Linux Kernel v6.16 is Released: This is What's New for Compute Express Link (CXL)

• Steve Scargall
• Cxl

The Linux Kernel v6.16 release brings several improvements and additions related to Compute Express Link (CXL) technology.

Release Highlights

Linux Kernel v6.16 includes 37 commits to the CXL and DAX subsystems:

The Linux v6.16 kernel cycle is dominated by one clear theme: hardening CXL memory device reliability and serviceability through the EDAC subsystem. Four new control features land in this release — patrol scrub, Error Check Scrub (ECS), soft Post Package Repair (PPR), and memory sparing — each exposing a distinct class of CXL 3.0 memory maintenance operations to userspace through a consistent sysfs interface. Alongside these, support for the PERFORM_MAINTENANCE command provides the underlying mechanism that drives scrub and repair operations on compliant devices. Taken together, this work moves CXL from a device class that Linux can merely enumerate and map to one where the kernel actively participates in proactive memory health management.