On Fri, Oct 7, 2022 at 10:18 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > On Tue, Sep 27, 2022 at 03:14:56PM +0200, Miguel Ojeda wrote: > > Note that only x86_64 is covered and not all features nor mitigations > > are handled, but it is enough as a starting point and showcases > > the basics needed to add Rust support for a new architecture. > > Does it fail the build if required options are missing? Specifically are > things like kCFI and IBT enabled? Silently not handling those will > result in an unbootable image. Rust supports IBT with -Z cf-protection=branch, but I don't see this option being enabled in the kernel yet. Cross-language CFI is going to require a lot more work though because the type systems are not quite compatible: https://github.com/rust-lang/rfcs/pull/3296 Sami
