Changes in bindgen_parameters

2fd6f55c - rust: map `__kernel_size_t` and friends also to usize/isize

Fri, 13 Sep 2024 21:29:22 +0000

rust: map `__kernel_size_t` and friends also to usize/isizeCurrently bindgen has special logic to recognise `size_t` and `ssize_t`and map them to Rust `usize` and `isize`. Similarly, `ptrdiff_t` ismapped to `isize`.However this falls short for `__kernel_size_t`, `__kernel_ssize_t` and`__kernel_ptrdiff_t`. To ensure that they are mapped to usize/isizerather than 32/64 integers depending on platform, blocklist them inbindgen parameters and manually provide their definition.Signed-off-by: Gary Guo Reviewed-by: Alice Ryhl Reviewed-by: Trevor Gross Link: https://lore.kernel.org/r/20240913213041.395655-3-gary@garyguo.net[ Formatted comment. - Miguel ]Signed-off-by: Miguel Ojeda List of files: /linux-6.15/rust/bindgen_parameters

732cd686 - rust: fix `ARCH_SLAB_MINALIGN` multiple definition error

Mon, 16 Sep 2024 00:33:46 +0000

rust: fix `ARCH_SLAB_MINALIGN` multiple definition errorWe use const helpers in form of const size_t RUST_CONST_HELPER_ARCH_SLAB_MINALIGN = ARCH_SLAB_MINALIGN;to aid generation of constants by bindgen because it is otherwise amacro definition of an expression and bindgen doesn't expand theconstant. The helpers are then have `RUST_CONST_HELPER` prefix strippedand exposed to Rust code as if `ARCH_SLAB_MISALIGN` is generatednatively by bindgen.This works well for most constants, but on RISC-V, `ARCH_SLAB_MINALIGN`is defined directly as literal constant if `!CONFIG_MMU`, and bindgenwould generate `ARCH_SLAB_MINALIGN` directly, thus conflict with theone generated through the helper.To fix this, we simply need to block bindgen from generating directlywithout going through helper.Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202409160804.eSg9zh1e-lkp@intel.com/Signed-off-by: Gary Guo Reviewed-by: Christian Schrefl Link: https://lore.kernel.org/r/20240916003347.1744345-1-gary@garyguo.netSigned-off-by: Miguel Ojeda List of files: /linux-6.15/rust/bindgen_parameters

bad098d7 - rust: Ignore preserve-most functions

Tue, 31 Oct 2023 20:19:44 +0000

rust: Ignore preserve-most functionsNeither bindgen nor Rust know about the preserve-most callingconvention, and Clang describes it as unstable. Since we aren't usingfunctions with this calling convention from Rust, blocklist them.These functions are only added to the build when list hardening isenabled, which is likely why others didn't notice this yet.Signed-off-by: Matthew Maurer Reviewed-by: Martin Rodriguez Reboredo Reviewed-by: Alice Ryhl Link: https://lore.kernel.org/r/20231031201945.1412345-1-mmaurer@google.com[ Used Markdown for consistency with the other comments in the file. ]Signed-off-by: Miguel Ojeda List of files: /linux-6.15/rust/bindgen_parameters

3098cb65 - rust: bindgen: Add `alt_instr` as opaque type

Thu, 02 Mar 2023 14:16:36 +0000

rust: bindgen: Add `alt_instr` as opaque typeTo address this build error: BINDGEN rust/bindings/bindings_generated.rs BINDGEN rust/bindings/bindings_helpers_generated.rs EXPORTS rust/exports_core_generated.h RUSTC P rust/libmacros.so RUSTC L rust/compiler_builtins.o RUSTC L rust/alloc.o RUSTC L rust/bindings.o RUSTC L rust/build_error.o EXPORTS rust/exports_alloc_generated.h error[E0588]: packed type cannot transitively contain a `#[repr(align)]` type --> /var/home/acme/git/linux/rust/bindings/bindings_generated.rs:10094:1 | 10094 | / pub struct alt_instr { 10095 | | pub instr_offset: s32, 10096 | | pub repl_offset: s32, 10097 | | pub __bindgen_anon_1: alt_instr__bindgen_ty_1, 10098 | | pub instrlen: u8_, 10099 | | pub replacementlen: u8_, 10100 | | } | |_^ | note: `alt_instr__bindgen_ty_1__bindgen_ty_1` has a `#[repr(align)]` attribute --> /var/home/acme/git/linux/rust/bindings/bindings_generated.rs:10111:1 | 10111 | / pub struct alt_instr__bindgen_ty_1__bindgen_ty_1 { 10112 | | pub _bitfield_1: __BindgenBitfieldUnit<[u8; 4usize], u16>, 10113 | | } | |_^ note: `alt_instr` contains a field of type `alt_instr__bindgen_ty_1` --> /var/home/acme/git/linux/rust/bindings/bindings_generated.rs:10097:9 | 10097 | pub __bindgen_anon_1: alt_instr__bindgen_ty_1, | ^^^^^^^^^^^^^^^^ note: ...which contains a field of type `alt_instr__bindgen_ty_1__bindgen_ty_1` --> /var/home/acme/git/linux/rust/bindings/bindings_generated.rs:10104:9 | 10104 | pub __bindgen_anon_1: alt_instr__bindgen_ty_1__bindgen_ty_1, | ^^^^^^^^^^^^^^^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0588`. make[1]: *** [rust/Makefile:389: rust/bindings.o] Error 1 make: *** [Makefile:1293: prepare] Error 2Cc: Derek Barbosa Cc: Miguel Ojeda Signed-off-by: Arnaldo Carvalho de Melo Fixes: 5d1dd961e743 ("x86/alternatives: Add alt_instr.flags")Reported-by: kernel test robot Reported-by: Vincenzo Palazzo Reviewed-by: Martin Rodriguez Reboredo Reviewed-by: Vincenzo Palazzo Signed-off-by: Miguel Ojeda List of files: /linux-6.15/rust/bindgen_parameters

2f7ab126 - Kbuild: add Rust support

Sat, 03 Jul 2021 14:42:57 +0000

Kbuild: add Rust supportHaving most of the new files in place, we now enable Rust supportin the build system, including `Kconfig` entries related to Rust,the Rust configuration printer and a few other bits.Reviewed-by: Kees Cook Reviewed-by: Nick Desaulniers Tested-by: Nick Desaulniers Reviewed-by: Greg Kroah-Hartman Co-developed-by: Alex Gaynor Signed-off-by: Alex Gaynor Co-developed-by: Finn Behrens Signed-off-by: Finn Behrens Co-developed-by: Adam Bratschi-Kaye Signed-off-by: Adam Bratschi-Kaye Co-developed-by: Wedson Almeida Filho Signed-off-by: Wedson Almeida Filho Co-developed-by: Michael Ellerman Signed-off-by: Michael Ellerman Co-developed-by: Sven Van Asbroeck Signed-off-by: Sven Van Asbroeck Co-developed-by: Gary Guo Signed-off-by: Gary Guo Co-developed-by: Boris-Chengbiao Zhou Signed-off-by: Boris-Chengbiao Zhou Co-developed-by: Boqun Feng Signed-off-by: Boqun Feng Co-developed-by: Douglas Su Signed-off-by: Douglas Su Co-developed-by: Dariusz Sosnowski Signed-off-by: Dariusz Sosnowski Co-developed-by: Antonio Terceiro Signed-off-by: Antonio Terceiro Co-developed-by: Daniel Xu Signed-off-by: Daniel Xu Co-developed-by: Björn Roy Baron Signed-off-by: Björn Roy Baron Co-developed-by: Martin Rodriguez Reboredo Signed-off-by: Martin Rodriguez Reboredo Signed-off-by: Miguel Ojeda List of files: /linux-6.15/rust/bindgen_parameters