[SteelPh0enix]

While our RTOS in fact doesn't care about it, because it's up to the user to implement the abstraction for the platform, the bigger issue is Rust support for more exotic architectures used in space - for example, SPARC (LEON3), which we'd like to consider for a Rust project, but it's compiler support seems relatively bad.

[topspin]

That seems like an insoluble problem: for every fault tolerant SPARC device someone slices off a wafer the ARM crowd ships a truck load of chips. SPARC will never have the mindshare necessary to polish the LLVM/Rust stack to parity.