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.. SPDX-License-Identifier: GPL-2.0
Arch Support
============
Currently, the Rust compiler (``rustc``) uses LLVM for code generation,
which limits the supported architectures that can be targeted. In addition,
support for building the kernel with LLVM/Clang varies (please see
Documentation/kbuild/llvm.rst). This support is needed for ``bindgen``
which uses ``libclang``.
Below is a general summary of architectures that currently work. Level of
support corresponds to ``S`` values in the ``MAINTAINERS`` file.
============= ================ ==============================================
Architecture Level of support Constraints
============= ================ ==============================================
``arm64`` Maintained Little Endian only.
``loongarch`` Maintained \-
``riscv`` Maintained ``riscv64`` only.
``um`` Maintained \-
``x86`` Maintained ``x86_64`` only.
============= ================ ==============================================
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