On Mon, Oct 10, 2022 at 04:15:33PM -0700, Sami Tolvanen wrote: > 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: Right; so where does that leave us? Are we going to force disable rust when kCFI is selected ?
