d24f5cdbeff8b6a063fca92d0a1f94122a799b59 - Merge tag 'rust-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

Tue, 18 Aug 2026 20:25:09 +0200

Merge tag 'rust-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linuxPull Rust updates from Miguel Ojeda: "Toolchain and infrastructure: - Warn when using 'bindgen' < 0.72.1 with 'libclang' >= 22, since that combination may fail to build. It includes a probe for the bug in case 'bindgen' happens to be patched, and tests In parallel, Nathan updated the instructions for the kernel.org LLVM+Rust toolchains so that the latest version of 'bindgen' is installed, which should avoid some of these situations - Support testing 'rust_is_available.sh' with 'bash' as '/bin/sh' - Fix an objtool warning by adding one more 'noreturn' function for Rust 1.99.0 (expected 2026-10-01) - Fix build error in the 'rusttest' target due to ambiguity when the 'rustc-dev' component is installed, which was uncovered by the work to support Rust's GCC backend ('rustc_codegen_gcc') - Fix future Clang warnings in the upcoming powerpc support due to macro redefinitions in the UAPI helper header by including the arch-aware 'ioctl.h' header 'kernel' crate: - Rework module ownership support: - Move the module-related types into a new 'module' module and make the 'THIS_MODULE' pointer a constant of 'ModuleMetadata' so that modules can provide the pointer in const contexts, and add a 'this_module' 'const fn' to retrieve it This was enabled by upstream Rust's work on the 'const_mut_refs' and 'const_refs_to_static' features which were stabilized back in Rust 1.83.0 - Teach '#[vtable]' to associate implementations with their owning module, defaulting to the local one, including fallbacks for doctests, uses within the 'kernel' crate (like upcoming KUnit '#[test]'s for DRM) and 'rusttest' - Set 'fops.owner' from the module pointer for DRM and miscdevice - Migrate Rust Binder and configfs away from the old 'THIS_MODULE' 'static' and finally remove it from the 'module!' macro - 'num' module: - Add the new 'casts' module for lossless integer conversions Rust's 'core' library's 'From' implementations do not cover conversions that are not portable or future-proof. However, the kernel supports a narrower set of architectures, which makes it helpful to provide more infallible conversions, instead of having developers use 'as' casts, which carry the risk of silently losing data This goes along with previous work we did to avoid casts in Rust kernel code since they are more powerful than needed Thus, provide safe 'const' conversion functions (e.g. 'usize_as_u64' and 'u64_into_u8'), as well as the 'FromSafeCast' and 'IntoSafeCast' extension traits that provide conversions that are known to be lossless in the kernel, and an 'arch' submodule defining conversions that are known to be lossless on particular architectures (e.g. 64-bit platforms). For instance: // Conversion in const context. const USIZED_CONST: usize = u8_as_usize(255u8); // Non-const conversions. let a = u64::from_safe_cast(4096usize); let b: u64 = 4096usize.into_safe_cast(); - Add 'Bounded::shr_exact' method in the vein of 'try_shrink' which shifts a bounded right only if it loses no set bits - Fix unsoundness issue in the 'Bounded::shr' method by rejecting, at compile-time, shifts of at least the type's bit width - 'fmt' module: - Route '{:p}' raw pointer formatting through the kernel's hashed '%p' format to prevent address leaks, including support for width and padding. Include tests for both 'no_hash_pointers' case and the default (hashed) one - Fix the '{:p}' forwarding implementation, which could print the address of a temporary stack variable - 'time' module: - Make 'Delta' generic over its time unit, with a default unit of nanoseconds ('Nsec'), preserving the existing behavior. Then, add a 'Jiffy' time unit - Add the 'Delta::as_millis_ceil()' method - Fix 'as_micros_ceil()' rounding near 'i64::MAX', which could yield a result one microsecond too small - 'sync' module: - Implement 'ForeignOwnable' for 'ARef', allowing C code to own an 'ARef' - Add a safe abstraction for 'rcu_barrier()' - 'error' module: add all of the remaining error codes, except the deprecated compatibility aliases - 'bug' module: - Fix build error on UML in 'warn_on!' for callers from within the 'kernel' crate - Fix future 'dead_code' warning on arm and loongarch64 and under 'CONFIG_BUG=n' in 'warn_on!', which would trigger with the upcoming SRCU abstractions - Fix future build error in 'rusttest' on cross-compilation cases, which would trigger when 'warn_on!' has callers inside the 'kernel' crate - 'bitfield' module: fix build error for the upcoming support for Rust's GCC backend ('rustc_codegen_gcc') by always inlining a couple conversions used in tests 'pin-init' crate: - User-visible changes: - Merge the '__pinned_init' and '__init' methods and make 'Init' a marker trait - Introduce public APIs 'raw_init' and 'raw_try_init' to prevent users from needing to invoke the internal '__pinned_init' and '__init' methods - Emit errors for duplicate '#[pin]' attributes - Link 'Zeroable::zeroed' and 'pin_init::zeroed' in documentation - Other changes: - Fix unwind safety issues - Clean up lint 'allow' and 'expect's - Overhaul '#[cfg]' handling to pave the way for tuple structs and self-referential structs - Mark many functions as '#[inline]' for better codegen with '-C opt-level=s' ('CC_OPTIMIZE_FOR_SIZE') 'MAINTAINERS': - Update 'MODULE SUPPORT' to cover the new 'module' module And some other fixes, cleanups and improvements"* tag 'rust-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (54 commits) rust: add functions and traits for lossless integer conversions rust: kernel: add `LocalModule` fallback for `#[vtable]` `impl`s rust: fmt: route {:p} through HashedPtr to prevent address leaks rust: fmt: fix {:p} printing stack addresses rust: module: update MAINTAINERS to cover module.rs rust: macros: remove `THIS_MODULE` static from `module!` rust_binder: use `LocalModule` for `THIS_MODULE` rust: configfs: use `LocalModule` for `THIS_MODULE` rust: miscdevice: set fops.owner from driver module pointer rust: drm: set fops.owner from driver module pointer rust: macros: auto-insert OwnerModule in #[vtable] rust: doctest: add LocalModule fallback for #[vtable] ThisModule rust: module: add `THIS_MODULE` const to `ModuleMetadata` trait rust: module: move module types into `module.rs` rust: num: add Bounded::shr_exact rust: num: reject Bounded::shr overshifts at build time rust: num: use const_assert! in Bounded rust: uapi: replace direct asm-generic/ioctl.h include with linux/ioctl.h rust: time: add Delta::as_millis_ceil() rust: time: add jiffies time unit for Delta ... List of files: /linux/rust/kernel/module.rs

54f846db7b35069959833d2f6ace998c2e11c908 - rust: module: add `THIS_MODULE` const to `ModuleMetadata` trait

Tue, 11 Aug 2026 08:39:44 +0200

rust: module: add `THIS_MODULE` const to `ModuleMetadata` traitSince `const_refs_to_static` has been stable as of the MSRV bump, a`ThisModule` pointer can now be used in const contexts.Add a `THIS_MODULE` const to the `ModuleMetadata` trait so that modulescan provide their `ThisModule` pointer in const contexts such as static`file_operations`.Add a `this_module()` helper to retrieve the `THIS_MODULE` pointer of agiven module type, and update `__init` to use it instead of the`THIS_MODULE` static generated by the `module!` macro.The `static THIS_MODULE` generated by the `module!` macro is retainedfor backwards compatibility with existing users and removed in a laterpatch once all references have been migrated.Assisted-by: opencode:glm-5.2Reviewed-by: Andreas Hindborg Reviewed-by: Gary Guo Acked-by: Danilo Krummrich Reviewed-by: Alice Ryhl Acked-by: Petr Pavlu Signed-off-by: Alvin Sun Link: https://patch.msgid.link/20260811-fix-fops-owner-v10-2-7e71776f9dbe@linux.devSigned-off-by: Miguel Ojeda List of files: /linux/rust/kernel/module.rs

0752a2e96e131ef1dff9740e1d4eb4a960778edb - rust: module: move module types into `module.rs`

Tue, 11 Aug 2026 08:39:43 +0200

rust: module: move module types into `module.rs`Move `Module`, `InPlaceModule`, `ModuleMetadata` and `ThisModule` from`lib.rs` into a new `rust/kernel/module.rs`. Re-export them from `lib.rs`to avoid tree-wide changes.Switch six bus driver registrations from `module.0` to the public`ThisModule::as_ptr()` accessor, since the field is no longer visibleoutside the new `module` submodule.No functional change.Assisted-by: opencode:glm-5.2Suggested-by: Gary Guo Link: https://lore.kernel.org/all/DJFIQPLOVO4T.1K8T0VZM30LDA@garyguo.net/Reviewed-by: Gary Guo Acked-by: Danilo Krummrich Reviewed-by: Alice Ryhl Acked-by: Petr Pavlu Signed-off-by: Alvin Sun Link: https://patch.msgid.link/20260811-fix-fops-owner-v10-1-7e71776f9dbe@linux.devSigned-off-by: Miguel Ojeda List of files: /linux/rust/kernel/module.rs

Changes in module.rs

d24f5cdbeff8b6a063fca92d0a1f94122a799b59 - Merge tag 'rust-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

54f846db7b35069959833d2f6ace998c2e11c908 - rust: module: add `THIS_MODULE` const to `ModuleMetadata` trait

0752a2e96e131ef1dff9740e1d4eb4a960778edb - rust: module: move module types into `module.rs`