AMD has published Linux kernel patches for an official Ryzen overclocking driver that allows users to adjust CPU power and current limits through a firmware interface exposed via sysfs. Phoronix reports: AMD engineer Shyam Sundar S K posted the patches for the AMD Overclocking "AOD" WMI driver as an interface to the platform firmware for managing overclocking and power/current limits of modern Ryzen CPUs. The driver in its initial form allows setting via sysfs a number of CPU tunables including the Package Power Tracking (PPT), Thermal Design Current (TDC), and Electrical Design Current (EDC) limits along with reading their supported range. SMT toggling can also be done via the interface as an alternative to the likes of Linux's "nosmt" option in disabling SMT at the platform level rather than kernel disabling. The current memory clocks can also be read via this AOD driver. The power tunables aren't applied in real-time but go into effect at next reboot. The firmware does support many more commands compared to the few initially wired up and hopefully in time more of these controls will be enabled with this driver.

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AmiMoJo shares a report from heise online: Anyone buying used hardware for a gaming PC needs to be careful: not just whether the components are still in order but also what the previous owner did with them. A case on Reddit shows this. Someone installed a used AMD processor, a Ryzen 7 5800X3D, in their PC. Because the previous owner was caught cheating, the new owner cannot start several online games. The problem was noticed in the first-person shooter "Valorant" from the development studio Riot. Right from the first start, the new owner was kicked out directly, according to their statement. Riot support confirmed that the previous owner had cheated. The processor is therefore on an internal blacklist -- and, with its installation in the PC, now apparently also some other components like the mainboard. Riot support does not remove such entries manually. In addition to "Valorant," all other PC games from Riot are affected: the strategy game "League of Legends," the auto-battler "Teamfight Tactics," the card game "Legends of Runeterra," the fighting game "2XKO," and likely future titles as well. Riot's "Vanguard" anti-cheat system traditionally runs deep in the Windows kernel and starts with the PC, but a June 2026 update allows it to launch with a game if security features such as TPM and Secure Boot are enabled. It's unclear how Riot uniquely identifies processors, though possibilities include hardware fingerprinting based on chip behavior or storing identification hashes in the Trusted Platform Module (TPM), which Vanguard accesses in the newer mode.

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Phoronix reports: AMD is building out what they are describing as an "elite" team of developers for driving Rust code "deep into the GPU stack" from firmware to drivers, shader compilers, and other GPU software in Rust. AMD Senior Fellow Harsh Meno posted this week to LinkedIn about this new effort... And note this AMD job posting that's active for hiring a software development engineer to work on Rust code... "We are building next-generation systems software for AMD GPUs with Rust as a core technical direction. The work spans compilers, runtimes, low-level GPU software, firmware, developer tooling, and methods for improving the safety and correctness of complex hardware-software systems. "Rust is not incidental to this role. You will help establish how Rust is used in performance-sensitive and high-trust parts of the GPU stack, including the compiler and tooling support, system interfaces, engineering practices, and validation methods required for production deployment. You will have the opportunity to influence both near-term implementations and the longer-term architecture for using Rust across current and future AMD platforms." "AMD also isn't alone," the article points out, "as NVIDIA has also been pursuing similar Rust-based initiatives for their GPU software too, including the development of the Nova Linux kernel driver written in Rust."

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