[PATCH v2 0/2] arm: Replace __ASSEMBLY__ with __ASSEMBLER__ in uapi headers

[Thomas Huth]

On 03/07/2025 19.38, Thomas Huth wrote:
> The kernel Makefiles define the __ASSEMBLY__ macro to provide
> a way to use headers in both, assembler and C source code.
> However, all the supported versions of the GCC and Clang compilers
> also define the macro __ASSEMBLER__ automatically already when compiling
> assembly code, so some kernel headers are using __ASSEMBLER__ instead.
> With regards to userspace code, this seems also to be constant source
> of confusion, see for example these links here:
> 
>   https://lore.kernel.org/kvm/20250222014526.2302653-1-seanjc@google.com/
>   https://stackoverflow.com/questions/28924355/gcc-assembler-preprocessor-not-compatible-with-standard-headers
>   https://forums.raspberrypi.com/viewtopic.php?p=1652944#p1653834
>   https://github.com/riscv-software-src/opensbi/issues/199
> 
> To avoid confusion in the future, it would make sense to standardize
> on the macro that gets defined by the compiler, so this patch series
> changes all occurances of __ASSEMBLY__ into __ASSEMBLER__.
> 
> I split the patches per architecture to ease the review, and I also
> split the uapi headers from the normal ones in case we decide that
> uapi needs to be treated differently from the normal headers here.

Friendly ping! The patches should still apply cleanly, I think.

  Thomas