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From: Miguel Ojeda <ojeda@kernel.org>
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Subject: Re: Re: [PATCH v2 0/3] Inline helpers into Rust without full LTO
Date: Mon, 23 Mar 2026 01:03:27 +0100
Message-ID: <20260323000327.111235-1-ojeda@kernel.org>
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On Sun, 22 Mar 2026 20:21:59 +0100 Miguel Ojeda <ojeda@kernel.org> wrote:
>
>     On the other hand, regardless of whether we fix this (and another
>     issue in a separate email found thanks to the UML build), we could
>     instead add `depends on` listing explicitly the architectures where
>     this is going to be actually tested. That way maintainers can decide
>     whether they want to support it when they are ready. Thoughts?

Another one for arm 32-bit:

      LD      .tmp_vmlinux1
    ld.lld: error: undefined symbol: __aeabi_read_tp
    >>> referenced by uaccess.rs:349 (rust/kernel/uaccess.rs:349)
    >>>               samples/rust/rust_misc_device.o:(<rust_misc_device::RustMiscDevice as kernel::miscdevice::MiscDevice>::ioctl) in archive vmlinux.a
    >>> referenced by uaccess.rs:543 (rust/kernel/uaccess.rs:543)
    >>>               samples/rust/rust_misc_device.o:(<rust_misc_device::RustMiscDevice as kernel::miscdevice::MiscDevice>::ioctl) in archive vmlinux.a
    >>> referenced by uaccess.rs:543 (rust/kernel/uaccess.rs:543)
    >>>               drivers/android/binder/rust_binder_main.o:(rust_binder_main::rust_binder_ioctl) in archive vmlinux.a
    >>> referenced 36 more times

I think this reinforces the case that this is something that arch folks
should think about case by case, and decide if they want to try -- we
may want to start simple with x86_64 and arm64 or similar first.

Thanks!

Cheers,
Miguel