[$] Whither the Apple AGX graphics driver?

Much of the early Rust code for the kernel has taken the form ofreimplementations of existing drivers as a proof of concept. One project,though, is entirely new: the driver for Apple GPUs written by Asahi Lina.This driver has shipped with AsahiLinux for some time and, by many accounts, is stable, usable, and ashining example of how Rust can be used in a complex kernel subsystem.That driver remains outside of the mainline kernel, though, and mergingcurrently looks like a distant prospect. The reasons for that state ofaffairs highlight some of the difficulties inherent in integrating a newlanguage (and its associated development style) into the Linux kernel.