Post Syndicated from corbet original https://lwn.net/Articles/1006805/

While the path toward the ability to write device drivers in Rust has been
anything but smooth, steady progress has been made and that goal is close
to being achieved — for some types of drivers at least. Device drivers
need to be able to set up memory areas for direct memory access (DMA)
transfers, though; that means Rust drivers will need a set of
abstractions to interface with the kernel’s DMA-mapping subsystem. Those
abstractions have run into resistance that has the potential to block
progress on the Rust-for-Linux project as a whole.