Not to be confused with AMD's Platform Security Processor (PSP), but Google's PSP Security Protocol (PSP) for encryption in-transit for TCP network connections is now ready for the mainline kernel. This initial PSP encryption support for network connections is set to arrive with the upcoming Linux 6.18 kernel.

Code was open-sourced this week and posted to the Linux kernel mailing list as a "request for comments" (RFC) for a multi-kernel architecture. This proposal could allow for multiple independent kernel instances to co-exist on a single physical machine. Each kernel could run on dedicated CPU Cores while sharing underlying hardware resources. This could also allow for some complex use-cases such as real-time (RT) kernels running on select CPU cores.

The past few years Google engineers have been reimplementing Android's Binder driver in the Rust programming language. Binder is a critical part of Android for inter-process communication (IPC) and now with Linux 6.18 it looks like the Rust rewrite will be upstreamed.

A patch queued into the PCI subsystem's "next" branch ahead of the Linux 6.18 merge window will uniformally expose the PCI device serial number of devices via sysfs for easy programmatic parsing.

Developers behind the Git distributed revision control system are debating whether to make Rust programming language support mandatory.

While years ago it was a annual ritual and closest thing to a vacation around here (even though the daily original content persisted), the Phoronix pilgrimage/meet-up at Oktoberfest in Munich sadly remains on hiatus. Web publishing operations remain difficult given the state of the industry and rampant ad-block use make even daily operations tight. But for those wishing to show their support for Phoronix during this autumn/fest period, there is the annual Phoronix Premium sale special for those wishing to help the site at a discounted rate to enjoy ad-free viewing, multi-page articles on a single page, native dark mode, and other benefits.

Rather than needing to parse package/history log files manually and akin to functionality provided by Red Hat's DNF, a merge request is pending to add a built-in history command for APT.

When it comes to AMD's incredible Strix Halo platform, the leading laptop option is the HP ZBook Ultra G1a. The HP ZBook Ultra G1a works great overall on Linux with the main caveat being the web camera due to making use of AMD's latest SoC capabilities for offloaded image processing. The AMD ISP4 open-source driver fixes that for the ZBook Ultra G1a and is also important for future laptop models employing AMD's ISP IP.

With Bcachefs now being "externally maintained" with the upstream kernel not accepting any further feature changes for now to this copy-on-write file-system, Bcachefs is pursuing a nice DKMS experience for distributing updated file-system kernel driver support out-of-tree. Convenient DKMS Debian packages of Bcachefs are now available on Ubuntu and Debian Linux platforms.

While KDE Plasma 6.5 beta released this week, KDE developers have been busy landing last-minute minor features and fixes into this next desktop release.

Linux 6.17 is an interesting time to carry out fresh file-system benchmarks given that EXT4 has seen some scalability improvements while Bcachefs in the mainline kernel is now in a frozen state. Linux 6.17 is also what's powering Fedora 43 and Ubuntu 25.10 out-of-the-box to make such a comparison even more interesting. Today's article is looking at the out-of-the-box performance of EXT4, Btrfs, F2FS, XFS, Bcachefs and then OpenZFS too.

Merged to Mesa Git are new contributor guidelines added to the documentation. This can help new users in submitting patches to Mesa. It also lays out a policy of allowing AI-generated/assisted code but the author submitting the code must be able to understand the code in question and take responsibility for it.

Announced last month was the Ubuntu "Dangerous" Desktop Images as a new form of the Ubuntu Linux desktop images that would ship with leading-edge Snaps atop the latest Ubuntu development images... Basically, pulling in the very latest Snaps to go along with the latest Ubuntu development Debian packages.

In addition to working on optimizing the performance of Zink for workstation graphics, Mike Blumenkrantz has also been tackling support for OpenGL mesh shaders with this generic OpenGL-on-Vulkan open-source driver.

In addition to AMD posting patches this week working on ACPI C4 power savings support available in some newer AMD systems, patches were separately posted this week for enabling S0ix sleep support within the AMDKFD compute kernel driver.

The beta release of KDE's Plasma 6.5 desktop took place on Thursday as they work toward the stable release expected on 21 October.

Valve is finally pushing the Steam client beyond the 32-bit world, at least for Microsoft Windows.

Canonical today released the Ubuntu 25.10 Beta as they work toward the stable Ubuntu 25.10 release in mid-October.

As announced last month, PCI Express 8.0 is aiming for 256 GT/s speeds for allowing 1 TB/s bandwidth in an x16 configuration. In working towards the goals of PCIe 8.0, the PCI-SIG announced today that the v0.3 specification has been released to members.

One of the exciting elements of Intel's Xeon 6 Granite Rapids launch last year was introducing support for MRDIMMs alongside DDR5-6400 memory support. After the Xeon 6900P series debut I posted some of the first independent DDR5-6400 vs. MRDIMM-8800 benchmarks. One year later, today is a fresh look at the DDR5-6400 vs. MRDIMM-8800 performance for Granite Rapids with new/updated benchmarks, the latest Linux software improvements, and also looking at the impact on power and thermals of MRDIMM memory.