The Linux kernel has reached a significant milestone with the release of version 7.0, marking an important evolution in the open-source operating system's development. Whilst the major version number might suggest revolutionary changes, Linux creator Linus Torvalds has clarified that this is primarily a numbering reset rather than an indication of unusually disruptive modifications. Nevertheless, the release brings several noteworthy enhancements that will impact both developers and system administrators.
One of the most anticipated changes in Linux 7.0 is the removal of the experimental label from Rust language support. Although Rust is not yet dominant in kernel development, this move represents a crucial step towards its gradual integration into the project. This signals growing confidence in Rust's role for future kernel development, particularly for memory-safe components.
Security improvements feature prominently in this release. The kernel now includes ML-DSA post-quantum signatures for authenticating kernel modules, preparing the system for future cryptographic challenges posed by quantum computing. Conversely, support for SHA-1-based module-signing schemes has been removed, reflecting the industry's move away from this ageing cryptographic standard. Additionally, Linux 7.0 introduces BPF-based filtering for io_uring operations, granting administrators enhanced control in restricted environments, whilst BTF type lookups have been optimised with binary search capabilities.
The release also advances several infrastructure improvements. The removal of linuxrc initrd code continues the transition to initramfs as the sole early-userspace boot mechanism. A new feature called NULLFS has been introduced—an immutable and empty root filesystem designed for systems that mount the actual root filesystem later in the boot process. Preemption handling has been simplified across most architectures, with further refinements to restartable sequences, workqueues, RCU internals, slab allocation, and type-based hardening measures. Filesystem and storage subsystems have received attention too, with non-blocking timestamp updates now functioning correctly and filesystems requiring explicit opt-in for leases rather than receiving them by default.
Fuente Original: https://linux.slashdot.org/story/26/04/13/1857240/linux-70-released?utm_source=rss1.0mainlinkanon&utm_medium=feed
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