Adding support for Rust adds about 12,500 lines of code to the Linux kernel, which is itself written in C, with which Rust has a certain amount of interoperability. However, GCC, the Gnu Compiler Collection, cannot compile the new language, and Clang, which can, has its own shortcomings if you want to write code for architectures other than x86 and Arm. With Rust set to receive official Linux support, and an eager community of kernel hackers, it can only be a matter of time before Rust is available to more architectures. The new kernel is expected to be available from December this year.