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

Merge tag 'rust-fixes-7.3' of git://git./linux/kernel/git/ojeda/linux

Pull Rust fixes from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Fix KCFI failures, such as in Rust doctests, by disabling function
     merging when CFI is enabled. Gary reported the LLVM bug to upstream
     and it is now fixed in their mainline.

   - Fix 'objtool' fallthrough warnings under the experimental
     'CONFIG_RUST_INLINE_HELPERS' by passing (for the combined Rust and
     helpers code) the LLVM options needed to preserve the unreachable
     traps that 'rustc' normally emits.

     In addition, fix 'objtool' errors when LTO is enabled on top, by
     also filtering out the LTO flags (for the combined Rust and helpers
     code) so that the traps are kept in place.

   - Fix 'objtool' warnings by adding one more 'noreturn' function.

   - Fix 'make rusttest' target when the 'rustc-dev' component is
     installed and Rust >= 1.82.0, <= 1.87.0 is used.

  'kernel' crate:

   - 'num' module: fix soundness issue in the 'Bounded' conversion from
     'bool' by restricting the conversions to unsigned 'Bounded'.

   - 'jump_label' module: fix future 'make rusttest' target failures
     when 'ARCH=' is set to an arch different than the host's.

   - 'list' module: fix incorrect 'pop_back()' comment"

* tag 'rust-fixes-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
  rust: kbuild: disambiguate `zerocopy_derive` for `rusttest`
  rust: num: restrict bool conversion to unsigned Bounded
  kbuild: rust: keep Rust objects out of Clang LTO with inline helpers
  kbuild: rust: preserve unreachable traps with inline helpers
  rust: cfi: disable function merging if CFI is enabled
  rust: jump_label: skip arch-specific asm in `testlib` builds
  objtool/rust: add one more `noreturn` Rust function
  rust: kernel: list: fix incorrect pop_back example comment