Re: Mainline loongarch64 defconfig+Rust build error

[Alice Ryhl]

On Thu, Dec 11, 2025 at 10:24 AM Alice Ryhl <aliceryhl@xxxxxxxxxx> wrote:
>
> On Tue, Dec 09, 2025 at 08:20:46PM +0800, hev wrote:
> > On Tue, Dec 9, 2025 at 6:58 PM Miguel Ojeda
> > <miguel.ojeda.sandonis@xxxxxxxxx> wrote:
> > >
> > > Hi all,
> > >
> > > I am seeing in mainline loongarch64 defconfig+Rust the following build
> > > error [1].
> > >
> > > Cheers,
> > > Miguel
> > >
> > > [1]
> > >
> > >  error[E0425]: cannot find value `compat_ptr_ioctl` in crate `bindings`
> > >      --> drivers/android/binder/rust_binder_main.rs:317:38
> > >       |
> > > 317   |         compat_ioctl: Some(bindings::compat_ptr_ioctl),
> >
> > It looks like the rust binder driver also needs to handle
> > !CONFIG_COMPAT. Here's a reference for that:
> >
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/rust/kernel/miscdevice.rs?h=v6.18#n410
>
> Yeah, it just needs a `#[cfg(CONFIG_COMPAT)] like miscdevice. Do you
> want to add it? Otherwise I'll get to it soon.
Oh looks like there is already a patch for it.

Alice