Linux Kernel 6.4 Released with New Rust Features, Filesystem Improvements, and Architecture Optimizations
Linux 6.4 has been officially released, featuring the removal of SELinux runtime disabling, enhancements to F2FS and Btrfs filesystems, a batch of new Rust code, integration of Intel LAM after criticism, performance optimizations for LoongArch, early Apple M2 support, Wi‑Fi 7, and AMD autonomous boot, while the merge window for 6.5 is now open.
Linux 6.4 has been officially released, and Linus Torvalds posted the official release announcement.
The final week of 6.4 was completed, mainly fixing netfilter, some memory‑management regressions, and various tracing updates. Other areas received random small changes: common architecture issues, some self‑test updates, and filesystem fixes (btrfs, ksmb), etc.
Key optimizations in Linux 6.4 include:
Removal of the SELinux runtime disabling feature.
Improvements to the F2FS and Btrfs filesystems.
Addition of a batch of Rust code.
Integration of the Intel LAM feature that Linus previously criticized.
Performance optimizations for the LoongArch architecture.
Linux 6.4 also contains early Apple M2 code, more Wi‑Fi 7 support, and AMD autonomous boot mode.
With the release of Linux 6.4, the merge window for Linux 6.5 is now open.
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