• Linux 7.0 adds SMT hot-plug support for LoongArch, boosting multi-threading flexibility. • 128‑bit atomic CMPXCHG instructions now supported, enhancing concurrency primitives for multi-core workloads. • MEMFD_SECRET syscall integrated, improving secure memory sharing on LoongArch for applications. • BPF program pack allocator and arena support added, optimizing eBPF workloads. • Device tree updates include NAND controllers, expanding hardware compatibility for embedded systems. • Kernel bug fixes address boot and KASAN unwind errors, stabilizing system. • LoongArch, inspired by MIPS64 and RISC‑V, gains traction in China’s PC market.

Article Summaries:

  • The Linux 7.0 kernel now includes several key updates for LoongArch, a Chinese CPU architecture inspired by MIPS64 and RISC‑V. New features add SMT hot‑plug support, 128‑bit atomic CMPXCHG operations, and enable the MEMFD_SECRET system call. Additional changes include BPF arena support, updated device tree files for NAND controllers, and fixes for KASAN boot and unwind errors. These enhancements, delivered via a single merge, aim to improve performance and stability for LoongArch systems, supporting China’s growing domestic PC manufacturing and software ecosystem.

Sources: