在2024年9月3日九月 下午8:01，Miguel Ojeda写道： > On Tue, Sep 3, 2024 at 8:32 PM Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> wrote: >> >> Ahh thanks for the elaboration. > > You're welcome! > >> However, kernel supports many ISA variants that are not defined by any rust target >> triple, I'm not really sure if it's appropriate to define them all in upstream. > > They need to be in upstream Rust somehow, because upstream Rust does > not want to stabilize `target.json` since it is too tied to LLVM (as > far as we have been told). Whether that is via `-Ctarget-feature`, or a > new `-Cglobal-target-feature`, or specific flags like `-Zfixed-x18` > (originally `-Ctarget-feature=+reserve-x18`), or (many) new target > triples for different combinations, or something else, it depends on > the case and what upstream Rust wants to do. > > That is why we should tell them what is needed, ideally in a new issue > in upstream Rust, and link it in > https://github.com/Rust-for-Linux/linux/issues/355 (please see that > list for similar examples). Seems like this topic is covered by an existing issue Reported at: https://github.com/rust-embedded/wg/issues/792#issuecomment-2328133517 Thanks! > > I hope that explains a bit more the context. > > Cheers, > Miguel -- - Jiaxun
