Arm Helping With AArch64 Rust Linux Kernel Enablement

Written by Michael Larabel in Arm on 25 January 2023 at 02:30 PM EST. 13 Comments
Much of the Rust programming language support/infrastructure for the Linux kernel thus far has been with an x86_64 focus while obviously AArch64 is an important target as well. It's nice to see Arm Limited engineers working on the Rust Linux kernel support for AArch64/ARM64.

Lead Rust for Linux developer Miguel Ojeda has already been carrying a patch to enable Rust support for AArch64 kernel builds while Jamie Cunliffe of Arm sent out a patch series today with a few more items for tidying up the AArch64 enablement for Rust code in the Linux kernel.

The patches enable Pointer Authentication and Branch Target Identification (PACBTI) support as part of the Rust build flags to match the C language options used within the kernel for Armv8 and newer builds. Also there is a patch disabling NEON and floating point target features to avoid using the FP/SIMD registers.

Rust, Linux kernel, and Arm logos.

The Arm patches were sent out today as part of the "Rust enablement for AArch64" patch series on the rust-for-linux list.

The Rust for Linux kernel work continues progressing overall with more subsystems and driver developers expressing interest in writing future kernel code with Rust. Those wishing to track the latest Rust for Linux kernel development code can do so via this GitHub repository.
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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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