Linux 6.9-rc4 Brings More Bcachefs Fixes, Native BHI Mitigation

Written by Michael Larabel in Linux Kernel on 14 April 2024 at 05:22 PM EDT. 8 Comments
As expected the Linux 6.9-rc4 test kernel is out today as Linux 6.9 works its way toward release by mid-May.

Linux 6.9-rc4 brings yet more fixes to the experimental Bcachefs file-system, more x86 speculation mitigation fixes and the Native BHI mitigation for Intel processors, and a random assortment of other changes like HID support for Intel Arrow Lake and Lunar Lake laptops.

Linux 6.9 Tux

Torvalds wrote in the 6.9-rc4 announcement:
"Nothing particularly unusual going on this week - some new hw mitigations may stand out, but after a decade of this I can't really call it "unusual" any more, can I? We also had a bit more bcachefs fixes, and a turbostat tool update, but other than that it's the regular drop of random stuff all over.

Drivers end up being the bulk of the remaining stuff, and we still had some timer fallout from the big timer updates this merge window. Nothing else really strikes me..."

There are many great Linux 6.9 features to look forward to with its May release.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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