Open-source News

Meta Uncovers RDSEED Architectural Issue In AMD Zen 5 CPUs

Phoronix - Fri, 10/17/2025 - 02:53
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...

Linux Affected By Decade Old Bug In Software RAID Around O_DIRECT Usage

Phoronix - Fri, 10/17/2025 - 02:07
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...

Mysterious Intrigue Around An x86 "Corporate Entity Other Than Intel/AMD"

Phoronix - Thu, 10/16/2025 - 23:02
Posted to the Linux kernel mailing list and GNU Binutils mailing list today is an intriguing message from a longtime x86/x86_64 expert around a "a corporate entity other than Intel/AMD" using some x86 opcodes not used by AMD or Intel processors...

An Early Look At Linux 6.18 Performance With Intel Xeon 6 Granite Rapids

Phoronix - Thu, 10/16/2025 - 22:40
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.

AOMP 22.0-1 Brings Many Improvements For AMD's Fortran Compiler GPU Offloading

Phoronix - Thu, 10/16/2025 - 21:42
AOMP 22.0-1 was released on Wednesday as the newest routine update to this downstream of LLVM/Clang/Flang maintained by AMD that continues to carry their latest modifications for enhancing the C/C++/Fortran compiler offloading support to AMD Radeon/Instinct hardware using the likes of OpenMP and OpenACC...

LLVM/Clang 22 Merges Support For Intel Nova Lake "-march=novalake"

Phoronix - Thu, 10/16/2025 - 21:25
Merged today to LLVM Git for next spring's LLVM 22.0 release is support for the Intel Nova Lake ISA targeting with the "-march=novalake" option...

Mesa NVK Lands Support For VK_NVX_image_view_handle - Needed For NVIDIA DLSS

Phoronix - Thu, 10/16/2025 - 20:24
Just days ago Valve developer Autumn Ashton announced initial NVIDIA DLSS upscaling for the open-source Mesa NVK driver. One of those needed Vulkan extensions, VK_NVX_image_view_handle, is already merged to Mesa Git...

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