How to make linux kernel modules with Rust

[b0207191]

i followed the steps of fishinabarrel/linux-kernel-module-rust: Framework for writing Linux kernel modules in safe Rust (github.com)

but when i perform 'make', it outputs 【
/linux-kernel-module-rust-master/hello-world; cargo build -Z build-std=core,alloc --target=x86_64-linux-kernel
error: failed to run rustc to learn about target-specific information

Caused by:
process didn't exit successfully: rustc - --crate-name ___ --print=file-names --target x86_64-linux-kernel --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=split-debuginfo --print=crate-name --print=cfg (exit status: 1)
--- stderr
error: Error loading target specification: Could not find specification for target "x86_64-linux-kernel". Run rustc --print target-list for a list of built-in targets】

then I modified the Kbulid
< cd $(src); $(CARGO) build -Z build-std=core,alloc --target=x86_64-unknown-linux-gnu

cd $(src); $(CARGO) build -Z build-std=core,alloc --target=x86_64-linux-kernel

i output another new error messages 【

error: failed to run custom build command for linux-kernel-module v0.1.0 (/home/linjia/rcode/linux-kernel-module-rust-master)

Caused by:
process didn't exit successfully: `/home/linjia/rcode/linux-kernel-module-rust-master/hello-world/target/debug/build/linux-kernel-module-9c202ec5f917d
--- stdout
cargo:rerun-if-env-changed=CC
cargo:rerun-if-env-changed=KDIR
cargo:rerun-if-env-changed=c_flags
cargo:rerun-if-changed=src/bindings_helper.h

--- stderr
/lib/modules/5.4.0-135-generic/build/./arch/x86/include/asm/segment.h:266:2: error: expected '(' after 'asm'
/lib/modules/5.4.0-135-generic/build/./arch/x86/include/asm/page_64.h:49:2: error: expected '(' after 'asm'
/lib/modules/5.4.0-135-generic/build/./arch/x86/include/asm/special_insns.h:207:2: error: expected '(' after 'asm'
/lib/modules/5.4.0-135-generic/build/./arch/x86/include/asm/processor.h:786:2: error: expected '(' after 'asm'
/lib/modules/5.4.0-135-generic/build/./arch/x86/include/asm/processor.h:798:2: error: expected '(' after 'asm' 】

[jofas]

The repo you've linked is archived and hasn't seen any activity in two years. Have you followed the link in the archived repo's readme to the current work the Rust-for-Linux people are doing? If you follow their quick-start documentation, maybe you'll be able to fix your build problems and start writing kernel modules?

[khimru]

Note that even if you would follow the links and use the actual sources you couldn't do much just yet.

Here's the current statius: While the 6.3 kernel has gained more support for the Rust language, it still remains true that there is little that can be done in Rust beyond the creation of a "hello world" module. That functionality was already available in C, of course, with a level of safety similar to what Rust can provide. Interest is growing, though, in merging actually useful modules written in Rust; that will require some more capable infrastructure than is currently present. A recent discussion on the handling of time values in Rust demonstrates the challenges — and opportunities — inherent in this effort.

Also note that while I have seen quite a few people were excited because they hoped that Rust would make it possible for them to create a single module which would then be usable with different kernel versions currently the opposite is true: because Rust-for-Linux is now in process of [slow] merging into the kernel it means the APIs which were developed while it wasn't part of the kernel are changing even more rapidly then before!

I hope in a year or two Rust would be somewhat normal language to write kernel modules in, but right now it's anything but.