[$] The intersection of unstable pages and direct I/O

Longtime LWN readers will have encountered the concept of “stable pages”
before; it was first covered here nearly
15 years ago. For the most part, the problem that stable pages were
meant to solve — preventing errors when user space modifies a buffer that
is under I/O — has been dealt with. But
recent discussions show that there is one area where problems remain:
direct I/O. There is some disagreement,
though, over whether those problems are the result of user-space bugs and
how much of a performance price should be paid to address them.

Valve’s Open-Source Radeon Linux Driver “Love Song For Gamers With Old GPUs”

As covered recently on Phoronix there has been several exciting improvements for aging AMD Radeon GCN 1.0 and GCN 1.1 era graphics cards for the open-source AMD Linux graphics driver stack. This work has been led by Timur Kristóf of Valve’s Linux Open-Source Graphics Driver Group with an ultimate goal of shifting the GCN 1.0/1.1 open-source Linux driver hardware support from the aging “Radeon” kernel graphics driver over to the “AMDGPU” kernel driver already used by default for all AMD GPUs/accelerators from GCN 1.2 and newer…

Engicam Showcases Computer Vision AI Kit Based on Renesas RZ/V2H Platform

Engicam has showcased the TIA RZ/V2H System-on-Module and its companion AI.DEV RZ/V2H development kit, both built around Renesas’ RZ/V2H processor. The module targets embedded applications in machine vision, autonomous robotics, and industrial automation, offering onboard AI acceleration and GPU capabilities optimized for real-time processing and advanced imaging. The TIA RZ/V2H module integrates a Renesas RZ/V2H […]

sudo-rs Affected By Multiple Security Vulnerabilities – Impacting Ubuntu 25.10

The Ubuntu 25.10 transition to using some Rust system utilities continues proving quite rocky. Beyond some early performance issues with Rust Coreutils, breakage for some executables, and broken unattended upgrades due to a Rust Coreutils bug, it’s also sudo-rs now causing Ubuntu developers some headaches. There are two moderate security issues affecting sudo-rs, the Rust version of sudo being used by Ubuntu 25.10…

Linux Proposal Aims To Overcome Kernel Limitation Affecting Various Gaming Peripherals

The Linux kernel’s Human Interface Devices (HID) subsystem has an existing architectural limitation that there is just up to one battery per HID device. But with modern devices — especially among various gaming peripherals — there can be more than one battery when considering earbuds with a battery for each earbud, multi-device wireless receivers, etc. A proposal was raised today to address this limitation…