1.. SPDX-License-Identifier: GPL-2.0 2 3Arch Support 4============ 5 6Currently, the Rust compiler (``rustc``) uses LLVM for code generation, 7which limits the supported architectures that can be targeted. In addition, 8support for building the kernel with LLVM/Clang varies (please see 9Documentation/kbuild/llvm.rst). This support is needed for ``bindgen`` 10which uses ``libclang``. 11 12Below is a general summary of architectures that currently work. Level of 13support corresponds to ``S`` values in the ``MAINTAINERS`` file. 14 15============ ================ ============================================== 16Architecture Level of support Constraints 17============ ================ ============================================== 18``um`` Maintained ``x86_64`` only. 19``x86`` Maintained ``x86_64`` only. 20============ ================ ============================================== 21 22