Open-source News

GCC Compiler Adds Targeting Support For XuanTie RISC-V CPUs

Phoronix - Tue, 04/22/2025 - 21:41
One of the early features being merged for what will become the GCC 16 compiler following last week's GCC 15 code branching is CPU targeting support for the XuanTie RISC-V processors...

Kmemdump Proposed For The Linux Kernel To Help With Memory Dumping & Debugging

Phoronix - Tue, 04/22/2025 - 20:28
Eugen Hristev of Linaro sent out a "request for comments" patch series today proposing kmemdump for the Linux kernel as a new means to assist in debugging driver/system problems by making it easier to dump memory for specific areas/regions...

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

Phoronix - Tue, 04/22/2025 - 18:59
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...

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

Phoronix - Tue, 04/22/2025 - 18:34
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...

Linux Patch Queued To Report Outdated Intel CPU Microcode As A Vulnerability

Phoronix - Tue, 04/22/2025 - 04:55
Last year a patch was raised for the Linux kernel that would report outdated CPU microcode versions as a security vulnerability.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and addressing other functional issues, the Linux kernel would begin warning users when recognizing that outdated CPU microcode is deployed for a given processor.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...

AMD ROCm 6.4 Adds SPIR-V Linking Support To HIP

Phoronix - Tue, 04/22/2025 - 03:58
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...

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

Phoronix - Tue, 04/22/2025 - 01:26
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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