Made public on Tuesday was BHI / Spectre-BHB as the newest offshoot from Spectre V2. There were Linux patches immediately posted for affected Intel and Arm processors while also making adjustments to AMD CPUs around its Retpoline handling. The VUSec security researchers that discovered BHI are recommending Retpolines be enabled for newer processors even those with hardware mitigations against Spectre V2, but that's that performance cost? Here are some initial benchmarks.
AMD posted this morning a new Linux kernel patch series for enabling a new feature for "upcoming processors" that is almost definitively for Zen 4, continuing their work in recent weeks around more open-source patches in preparing for their next-generation processors...
When Linus Torvalds gets motivated and behind kernel changes, they tend to happen more quickly, with the latest example being the switching from the C89 language standard to C11 (GNU11). That change is now expected early on for the Linux 5.18 merge window...
Assuming nothing major comes up in the next few days, the Linux 5.17 kernel is expected to be released on Sunday. While we have been covering Linux 5.17 kernel activity already for a while prior to the merge window even getting going, here is a convenient look at some of the most interesting changes to find in this new release...
A set of 13 patches were posted overnight for improving the Intel Linux kernel graphics driver's handling of the power-savings feature Display Refresh Rate Switching (DRRS) for laptops...
MorphOS as the AmigaOS-like operating system now in development for more than two decades and targeting PowerPC hardware is out with version 3.16 as its first major release in over a year...
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