diff options
| -rw-r--r-- | Documentation/rust/arch-support.rst | 2 | ||||
| -rw-r--r-- | rust/Makefile | 16 | ||||
| -rw-r--r-- | rust/kernel/print.rs | 6 | ||||
| -rw-r--r-- | rust/kernel/str.rs | 2 | ||||
| -rwxr-xr-x | scripts/generate_rust_analyzer.py | 5 | ||||
| -rwxr-xr-x | scripts/is_rust_module.sh | 2 |
6 files changed, 27 insertions, 6 deletions
diff --git a/Documentation/rust/arch-support.rst b/Documentation/rust/arch-support.rst index ed7f4f5b3cf1..b91e9ef4d0c2 100644 --- a/Documentation/rust/arch-support.rst +++ b/Documentation/rust/arch-support.rst @@ -15,7 +15,7 @@ support corresponds to ``S`` values in the ``MAINTAINERS`` file. ============ ================ ============================================== Architecture Level of support Constraints ============ ================ ============================================== -``x86`` Maintained ``x86_64`` only. ``um`` Maintained ``x86_64`` only. +``x86`` Maintained ``x86_64`` only. ============ ================ ============================================== diff --git a/rust/Makefile b/rust/Makefile index f88d108fbef0..aef85e9e8eeb 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -262,6 +262,20 @@ BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) # some configurations, with new GCC versions, etc. bindgen_extra_c_flags = -w --target=$(BINDGEN_TARGET) +# Auto variable zero-initialization requires an additional special option with +# clang that is going to be removed sometime in the future (likely in +# clang-18), so make sure to pass this option only if clang supports it +# (libclang major version < 16). +# +# https://github.com/llvm/llvm-project/issues/44842 +# https://github.com/llvm/llvm-project/blob/llvmorg-16.0.0-rc2/clang/docs/ReleaseNotes.rst#deprecated-compiler-flags +ifdef CONFIG_INIT_STACK_ALL_ZERO +libclang_maj_ver=$(shell $(BINDGEN) $(srctree)/scripts/rust_is_available_bindgen_libclang.h 2>&1 | sed -ne 's/.*clang version \([0-9]*\).*/\1/p') +ifeq ($(shell expr $(libclang_maj_ver) \< 16), 1) +bindgen_extra_c_flags += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang +endif +endif + bindgen_c_flags = $(filter-out $(bindgen_skip_c_flags), $(c_flags)) \ $(bindgen_extra_c_flags) endif @@ -283,7 +297,7 @@ quiet_cmd_bindgen = BINDGEN $@ $(bindgen_target_cflags) $(bindgen_target_extra) $(obj)/bindings/bindings_generated.rs: private bindgen_target_flags = \ - $(shell grep -v '^\#\|^$$' $(srctree)/$(src)/bindgen_parameters) + $(shell grep -v '^#\|^$$' $(srctree)/$(src)/bindgen_parameters) $(obj)/bindings/bindings_generated.rs: $(src)/bindings/bindings_helper.h \ $(src)/bindgen_parameters FORCE $(call if_changed_dep,bindgen) diff --git a/rust/kernel/print.rs b/rust/kernel/print.rs index 30103325696d..8009184bf6d7 100644 --- a/rust/kernel/print.rs +++ b/rust/kernel/print.rs @@ -18,7 +18,11 @@ use crate::bindings; // Called from `vsprintf` with format specifier `%pA`. #[no_mangle] -unsafe fn rust_fmt_argument(buf: *mut c_char, end: *mut c_char, ptr: *const c_void) -> *mut c_char { +unsafe extern "C" fn rust_fmt_argument( + buf: *mut c_char, + end: *mut c_char, + ptr: *const c_void, +) -> *mut c_char { use fmt::Write; // SAFETY: The C contract guarantees that `buf` is valid if it's less than `end`. let mut w = unsafe { RawFormatter::from_ptrs(buf.cast(), end.cast()) }; diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs index b771310fa4a4..cd3d2a6cf1fc 100644 --- a/rust/kernel/str.rs +++ b/rust/kernel/str.rs @@ -408,7 +408,7 @@ impl RawFormatter { /// If `pos` is less than `end`, then the region between `pos` (inclusive) and `end` /// (exclusive) must be valid for writes for the lifetime of the returned [`RawFormatter`]. pub(crate) unsafe fn from_ptrs(pos: *mut u8, end: *mut u8) -> Self { - // INVARIANT: The safety requierments guarantee the type invariants. + // INVARIANT: The safety requirements guarantee the type invariants. Self { beg: pos as _, pos: pos as _, diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py index ecc7ea9a4dcf..946e250c1b2a 100755 --- a/scripts/generate_rust_analyzer.py +++ b/scripts/generate_rust_analyzer.py @@ -104,7 +104,10 @@ def generate_crates(srctree, objtree, sysroot_src): name = path.name.replace(".rs", "") # Skip those that are not crate roots. - if f"{name}.o" not in open(path.parent / "Makefile").read(): + try: + if f"{name}.o" not in open(path.parent / "Makefile").read(): + continue + except FileNotFoundError: continue logging.info("Adding %s", name) diff --git a/scripts/is_rust_module.sh b/scripts/is_rust_module.sh index 28b3831a7593..464761a7cf7f 100755 --- a/scripts/is_rust_module.sh +++ b/scripts/is_rust_module.sh @@ -13,4 +13,4 @@ set -e # # In the future, checking for the `.comment` section may be another # option, see https://github.com/rust-lang/rust/pull/97550. -${NM} "$*" | grep -qE '^[0-9a-fA-F]+ r _R[^[:space:]]+16___IS_RUST_MODULE[^[:space:]]*$' +${NM} "$*" | grep -qE '^[0-9a-fA-F]+ [Rr] _R[^[:space:]]+16___IS_RUST_MODULE[^[:space:]]*$' |