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Updated Linux Patch Would Disable RDSEED For All AMD Zen 5 CPUs

A few days back we reported on a Meta engineer uncovering an architectural issue with RDSEED usage on AMD EPYC 9005 "Turin" CPUs. It ended up being found to affect more CPU models than originally anticipated and a new patch posted to the Linux kernel mailing list would disable RDSEED usage across all AMD Zen 5 processors...
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LACT 0.8.2 Released For Multi-Vendor Linux GPU Control GUI

LACT 0.8.2 is out this weekend as the newest feature release to this Linux GPU control application. This Rust-based software provides a GUI for controlling AMD, NVIDIA, and Intel GPUs under Linux with various monitoring metrics, information reporting, power configuration, thermals configuration, and overclocking with supported hardware...
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KDE Plasma 6.5 Is Said To Be "A Pretty Darn Good Release"

With plans to release next Tuesday (21 October), KDE developers this week have been putting the finishing touches on this next open-source desktop update. Prominent KDE developer Nate Graham says he thinks it's going to be "a pretty darn good release" when it officially debuts...
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openSFI Is A Very Interesting Collaboration Between AMD & Intel For Better Firmware Unification

An interesting technical collaboration between AMD and Intel as well as other industry players like Google, Bytedance, Microsoft, MiTAC, HPE, and others is openSFI. The new openSFI "Open Silicon Firmware Interface" project is aiming to work toward vendor-neutral low-level firmware interfaces for more interoperable firmware solutions across vendors...
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Intel Introducing Microcode Staging Feature For Linux 6.19 To Cope With Bigger Blobs

Due to Intel CPU microcode sizes continuing to get larger and late-loading new CPU microcode onto a running system can lead to (brief) disruptions/downtime while the update is applied, future Intel CPUs are introducing a microcode "staging" feature to reduce that microcode updating downtime. The Linux 6.19 kernel in the new year is set to support the Intel microcode staging feature with capable processors...
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Ubuntu 25.10 Performance On System76 Thelio Astra / Ampere Altra

With the recent release of Ubuntu 25.10 we have seen some nice performance improvements on the likes of AMD Zen 5 and Intel Lunar Lake compared to prior Ubuntu releases. But what about ARM? In this article is a look at the Ampere Altra performance between Ubuntu 25.04 and Ubuntu 25.10 using the popular System76 Thelio Astra workstation.
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New Linux Kernel Patches From Intel Delivering +18% Database Performance

In addition to the recent Linux kernel patches out of Intel for Cache Aware Scheduling for better performance, separately, another interesting new patch series was sent out this week for the Linux kernel. The patches rework some low-level Linux kernel memory management code and at least for database workloads the early benchmarks are showing possible 14~18% faster database performance with PostgreSQL...
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Fedora Cloud Looks To Switch /boot To Btrfs Subvolume

With Fedora 43 releasing in the coming weeks, Fedora stakeholders are beginning to plot their feature ideas for next year's Fedora 44 release. One of the early F44 feature submissions pending approval is switching /boot on Fedora Cloud images to being a Btrfs file-system subvolume...
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Linux Graphics Driver Fixes Readied For Linux 6.18-rc2

Ahead of the Linux 6.18-rc2 release on Sunday, the Direct Rendering Manager (DRM) fixes for the week were sent out today. There is the usual assortment of different kernel graphics driver fixes, mostly with the Intel and AMD drivers as usual. In particular a few Intel driver fixes make this week's pull worth mentioning...
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Valve Developer Contributes Major Improvement To RADV Vulkan For Llama.cpp AI

Valve's Linux graphics driver team contributions aren't limited to just enhancing the rasterization and ray-tracing graphics performance of the open-source Linux GPU drivers for gaming. Beyond other interesting contributions from that talented group of open-source Linux graphics developers over the years and for other areas like enhancing old GPU hardware support, merged this week for the Radeon Vulkan "RADV" driver is a massive improvement to benefit the Llama.cpp AI performance...
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Meta Uncovers RDSEED Architectural Issue In AMD Zen 5 CPUs

Over the years we have seen various workarounds like disabling RDSEED for select AMD CPUs due to hardware bugs and early on in the Zen days were also some RdRand issues due to different problems. It turns out the newest AMD EPYC 5th Gen "Turin" processors have a new RDSEED issue...
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Linux Affected By Decade Old Bug In Software RAID Around O_DIRECT Usage

A Phoronix reader pointed out a bug report from 2015 now getting renewed interest... Linux software RAID via MD RAID, DRBD, LVM RAID, and similar software-based solutions can be broken from user-space around O_DIRECT usage. The issue is that these RAID arrays can be put silently into an inconsistent state across disks...
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An Early Look At Linux 6.18 Performance With Intel Xeon 6 Granite Rapids

With Linux 6.18 now past the merge window and many new features and changes introduced (https://www.phoronix.com/review/linux-618-features), I have begun testing out this kernel on various servers, desktops, and laptops at Phoronix. Linux 6.18 is quite important with expected to become this year's LTS kernel version upon its stable debut in December. Up today is a first look at Linux 6.17 vs. 6.18-rc1 performance using Intel Xeon 6 Granite Rapids server performance.
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