zlacker

All this safety, as Linus points out, is safety for plain programs, but a complex of serious problem for the kernel. "Safe languages" are only safe up to a point and in context; Rust has clearly been designed to write safe applications, not safe kernels.

So if some enthusiasts are trying to use Rust at cross purposes for Linux they are likely to appear obnoxious and entitled, and it is perfectly right to challenge them to prove that they can make Rust suitable.

There's more high quality and polite preaching earlier in the thread, for example:

  > Please just accept this, and really *internalize* it.  Because this isn't actually just about allocators. Allocators may be one very common special case of this kind of issue, and they come up quite often as a result, but this whole "your code needs to *understand* the special restrictions that the kernel is under" is something that is quite fundamental in general.