On Tue, Feb 13, 2024 at 3:09 PM Ramon de C Valle <rcvalle@xxxxxxxxxx> wrote: > > On Mon, Feb 12, 2024 at 12:36 PM Sami Tolvanen <samitolvanen@xxxxxxxxxx> wrote: > > > > On Mon, Feb 12, 2024 at 11:04 AM Ramon de C Valle <rcvalle@xxxxxxxxxx> wrote: > > > > > > Sorry for the late reply. Sami might be the best person to answer > > > this, but KCFI (not CFI) tests are lowered by passes that are > > > architecture specific (see https://reviews.llvm.org/D119296), so we'd > > > need to add support for RISC-V. There is no additional work required > > > in the Rust compiler besides enabling it for the new target. > > > > LLVM 17 added KCFI support for RISC-V. Sounds like it's just a > > question of whether rustc uses a new enough version of LLVM then? > > rustc is using LLVM 17 since > https://github.com/rust-lang/rust/pull/114048, so I guess I can enable > it for RISC-V targets in > https://github.com/rust-lang/rust/tree/master/compiler/rustc_target/src/spec/targets, > and the Linux kernel will get it on the next compiler update? 18 as of a few hours ago :) https://github.com/rust-lang/rust/pull/120055 Just for an idea of timing, anything merged this month will be in 1.78 on 2024-05-02.
