IBM s390 (IBM Z) is set to become the next CPU architecture with Rust support in the Linux kernel, following x86_64, ARM, ARM64, LoongArch, and RISC-V. A patch series by IBM engineer Jan Polensky adds the necessary architecture-specific pieces: wiring up s390 as a Rust-capable 64-bit architecture, adding missing assembly interfaces for WARN/BUG reporting and static branches, and adjusting bindgen parameters to avoid layout conflicts. The change spans only a few dozen lines across four patches and is currently under review, with a possible inclusion in the Linux v7.2 kernel cycle.
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