Linux Developers Continue Discussing "SLS" Mitigation For The Kernel

Disclosed by Arm last summer was the Straight Line Speculation (SLS) vulnerability and they were quick to introduce new safeguards against SLS in the GCC and LLVM compilers. The compiler-based mitigations to straight-line speculation involves adding speculation barrier sequences around the vulnerable instructions to prevent speculatively executing instructions around changes in control flow. While compiler developers were quick to add the options, so far the Linux kernel developers are in disagreement still over its importance and the proposed patches that would flip on this option when compiling the ARM Linux kernel.

11 Minutes Ago - Arm - Straight Line Speculation - Add A Comment

5 March

Linux 5.12-rc2 Released Early - A Rare Friday Kernel Due To That Nasty Corruption Issue

While Linus Torvalds long has released his new kernel releases -- both release candidates and the inaugural stable releases -- every Sunday, there are the occasional exceptions like this week with Linux 5.12-rc2 being issued on Friday night. The Linux 5.12-rc2 release has come early due to that nasty file-system corruption issue stemming from botched swapfile handling.

9 Hours Ago - Linux Kernel - Linux 5.12-rc2 - 3 Comments
Radeon RX 6800 Series Seeing Some Small Gains With Linux 5.12

When it comes to the AMDGPU kernel driver changes in Linux 5.12 for modern open-source AMD Radeon graphics, most notable is RDNA2 OverDrive overclocking support now being available as well as AMDGPU FreeSync over HDMI (pre-HDMI 2.1). But from initial testing the new in-development kernel is showing mostly subtle performance improvements for the Radeon RX 6800 series over Linux 5.11.

5 March 12:09 PM EST - Display Drivers - 8 Comments
PyTorch 1.8 Released With AMD ROCm Binaries

PyTorch 1.8 was released on Thursday as the newest version of this widely-used machine learning library. Exciting many will be easier AMD Radeon ROCm support with Python wheels now provided for that Radeon Open eCosystem support.

5 March 08:23 AM EST - Programming - PyTorch 1.8 - 13 Comments
Wine's Project Leader Has Given A Blessing To The Wayland Effort

Published last month was an updated but still experimental version of the native Wayland support for Wine after that code was originally published last year. One of the lingering questions has been around the prospects of mainlining this Wayland driver in Wine while last week the longtime Wine project leader, Alexandre Julliard, provided some clarity on the matter.

5 March 03:30 AM EST - WINE - Wine + Wayland - 24 Comments

4 March

Even In 2021, Intel Squeezes Some Very Nice Performance Gains Out Of Their OpenGL Driver

While it's 2021 and many modern Linux gaming and other workloads are focusing on the Vulkan API, Intel isn't letting up in their aggressive optimizations to their open-source "Iris" OpenGL Gallium3D driver for Linux systems. With the latest Mesa 21.1 code today there is a set of patches providing up to 17% better performance in some games while other OpenGL software is generally a few percent faster at least. In some micro-benchmarks it can be more than 50% faster.

4 March 06:33 PM EST - Intel - Threaded Contexts - 14 Comments

3 March

Intel Sends Out KVM SGX Virtualization Patches For Linux

Intel SGX support finally landed in Linux 5.11 after going through 40+ rounds of review that took years for bringing up Software Guard Extensions in the mainline kernel. But that trek isn't yet over as Intel is now working on KVM SGX virtualization support to be upstreamed.

3 March 02:18 PM EST - Intel - KVM SGX Virtualization - 1 Comment
openSUSE Leap 15.3 Beta Begins

OpenSUSE Leap 15.3 Alpha started rolling out in December while today the beta builds have begun for this next openSUSE Leap installment.

3 March 08:16 AM EST - SUSE - openSUSE Leap 15.3 - 22 Comments

2 March

That Linux 5.12 Severe Data Corruption Bug Hits Intel CI Systems - Issue Caused By Swap File

Last week I issued a warning of possible data loss on the early Linux 5.12 kernel code that was reliably leaving my test systems severely corrupted. Intel's internal graphics test systems it turns out have now been bitten by this issue in encountering this significant file-system corruption and as such they've been quick to jump on the issue - there's now an idea what's causing the nasty issue and a workaround by reverting select patches.

2 March 01:43 PM EST - Linux Kernel - Intel Hit By Data Corruption - 34 Comments
Intel Looking To Upstream A Proper SPIR-V Compute Back-End For LLVM

It's been talked about many times from various parties but so far has remained elusive from the mainline LLVM code-base: a SPIR-V back-end for LLVM that would go from LLVM into this Khronos intermediate representation most notably used by OpenCL and Vulkan drivers. Intel engineers are stepping up and hope to help get a proper SPIR-V back-end upstreamed into LLVM.

2 March 08:46 AM EST - Intel - LLVM To SPIR-V - 2 Comments

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