The unstable new_uninit feature enables various library APIs to create uninitialized containers, such as `Box::assume_init()`. This is necessary to build abstractions that directly initialize memory at the target location, instead of doing copies through the stack. Will be used by the DRM scheduler abstraction in the kernel crate, and by field-wise initialization (e.g. using `place!()` or a future replacement macro which may itself live in `kernel`) in driver crates. See [1] [2] [3] for background information. [1] https://github.com/Rust-for-Linux/linux/issues/879 [2] https://github.com/Rust-for-Linux/linux/issues/2 [3] https://github.com/rust-lang/rust/issues/63291 Signed-off-by: Asahi Lina <lina@xxxxxxxxxxxxx> --- rust/kernel/lib.rs | 1 + scripts/Makefile.build | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs index 223564f9f0cc..1118cd3e0b5f 100644 --- a/rust/kernel/lib.rs +++ b/rust/kernel/lib.rs @@ -17,6 +17,7 @@ #![feature(core_ffi_c)] #![feature(dispatch_from_dyn)] #![feature(generic_associated_types)] +#![feature(new_uninit)] #![feature(receiver_trait)] #![feature(unsize)] diff --git a/scripts/Makefile.build b/scripts/Makefile.build index a0d5c6cca76d..0f637e1ca8dc 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -277,7 +277,7 @@ $(obj)/%.lst: $(src)/%.c FORCE # Compile Rust sources (.rs) # --------------------------------------------------------------------------- -rust_allowed_features := core_ffi_c +rust_allowed_features := core_ffi_c,new_uninit rust_common_cmd = \ RUST_MODFILE=$(modfile) $(RUSTC_OR_CLIPPY) $(rust_flags) \ --- base-commit: 83f978b63fa7ad474ca22d7e2772c5988101c9bd change-id: 20230224-rust-new_uninit-a575d34987c3 Thank you, ~~ Lina
