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      Linux Being Patched For Buggy MWAIT Behavior On Intel Ice Lake Servers

      news.movim.eu / Phoronix · Tuesday, 22 April - 10:59

    The Linux kernel has seen safeguards for select prior Intel CPU cores due to bugs around the MONITOR/MWAIT implementation with the processors. MWAIT/MONITOR bugs was found to be the cause of annoying issues at boot for Lunar Lake laptops and also previously plagued Goldmont Atom cores. It also turns out that Ice Lake servers can be subject to similar MWAIT/MONITOR behavior...
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      www.phoronix.com /news/Linux-Buggy-MWAIT-Ice-Lake

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      Intel Vulkan Linux Driver Begins Prepping For Ray-Tracing Changes With Xe3

      news.movim.eu / Phoronix · Tuesday, 22 April - 10:34

    Merged yesterday to Mesa Git for next quarter's Mesa 25.2 release is an improvement for the Intel Vulkan ray-tracing code with an eye on next-gen Xe3 graphics hardware...
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      www.phoronix.com /news/Intel-Xe3-Ray-Tracing-64-bit

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      Linux Patch Queued To Report Outdated Intel CPU Microcode As A Vulnerability

      news.movim.eu / Phoronix · Monday, 21 April - 20:55

    Last year a patch was raised for the Linux kernel that would report outdated CPU microcode versions as a security vulnerability. With Intel routinely issuing new CPU microcode updates for security vulnerabilities and addressing other functional issues, the Linux kernel would begin warning users when recognizing that outdated CPU microcode is deployed for a given processor. That patch has now been queued into a tip/tip.git branch and thus looking like it will be submitted for the upcoming Linux 6.16 kernel cycle...
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      www.phoronix.com /news/Intel-Old-Microcode-Vulnerable

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      AMD ROCm 6.4 Adds SPIR-V Linking Support To HIP

      news.movim.eu / Phoronix · Monday, 21 April - 19:58

    With the recently released AMD ROCm 6.4 release for this open-source GPU compute stack for Radeon and Instinct hardware there are yet more indications around AMD's growing software ecosystem expansion. With ROCm 6.4 are additions to the HIP API for allowing linking of SPIR-V code objects, which is the intermediate representation used by Vulkan as well as with OpenCL and other Khronos APIs...
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      www.phoronix.com /news/AMD-ROCm-6.4-SPIR-V-Linker

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      GCC Patch Revived For -mtune=generic Showing Nice Benefits On Intel & AMD CPUs

      news.movim.eu / Phoronix · Monday, 21 April - 17:26

    A 2021 era patch for the GNU Compiler Collection (GCC) has been revived and discussed in recent days around simplifying the memcpy and memset inlining strategies when compiling code with the "-mtune=generic" option. The patch takes the approach during that generic tuning to try to avoid branches. In doing so, some nice performance benefits are observed in some benchmarks...
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      www.phoronix.com /news/GCC-Inline-Memset-Memcpy-Gen

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      Ubuntu 25.04 vs. Windows 11 CPU Performance For The AMD Ryzen AI 7 PRO 360

      news.movim.eu / Phoronix · Monday, 21 April - 12:16

    Earlier this month was a look at the AMD RDNA 3.5 graphics between Windows 11 and Ubuntu 25.04 using a Ryzen AI 7 PRO 360 "Strix Point" SoC within a Lenovo ThinkPad T14s Gen 6. That was an interesting benchmark battle and providing a fresh look at the open-source AMD Linux graphics driver stack relative to Radeon Software on Windows. For those curious about the current Zen 5(C) performance, today's article are all of the CPU benchmarks for the AMD Ryzen AI 7 PRO 360 performance under the newly-released Ubuntu 25.04 and Windows 11 as pre-loaded by Lenovo.
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      www.phoronix.com /review/ryzen-ai-7-pro-360-windows-linux

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      Intel Posts Newest Code For Cache Aware Scheduling On Linux

      news.movim.eu / Phoronix · Monday, 21 April - 10:31

    Intel engineers have recently been working on the notion of cache-aware scheduling / load balancing for benefiting the likes of Intel and AMD processors sporting multiple caches. Posted today was the newest iteration of these patches that are still seeking to get more feedback and testing around this potential useful addition to the Linux kernel...
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      www.phoronix.com /news/Linux-RFC-Cache-Aware-Sched

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      FamFS Ported To FUSE For Fabric-Attached Memory File-System

      news.movim.eu / Phoronix · Monday, 21 April - 10:12

    One year ago we covered Micron working on FamFS as a new file-system for fabric-attached memory with an emphasis on Compute Express Link (CXL) devices. That started off as a conventional kernel driver while now the newest patches posted this weekend are morphing it into a user-space driver via FUSE...
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      www.phoronix.com /news/FamFS-FUSE-Patches

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      RISC-V getrandom vDSO Ready Ahead Of Linux 6.16 With Exciting Performance

      news.movim.eu / Phoronix · Monday, 21 April - 09:59

    Merged last year in Linux 6.11 was getrandom() support in the vDSO for x86/x86_64 and then in Linux 6.12 was extended to LoongArch and ARM64. With the upcoming Linux 6.16 cycle, this support for faster while still secure RNG for user-space is set to come to RISC-V...
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      www.phoronix.com /news/Linux-616-RISC-V-getrandom-vDSO