Re: [PATCH 3/8] arm64: Extend support for CONFIG_FUNCTION_ALIGNMENT

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On Mon, Jan 09, 2023 at 01:58:23PM +0000, Mark Rutland wrote:

> diff --git a/arch/arm64/include/asm/linkage.h b/arch/arm64/include/asm/linkage.h
> index 1436fa1cde24d..df18a3446ce82 100644
> --- a/arch/arm64/include/asm/linkage.h
> +++ b/arch/arm64/include/asm/linkage.h
> @@ -5,8 +5,14 @@
>  #include <asm/assembler.h>
>  #endif
>  
> -#define __ALIGN		.align 2
> -#define __ALIGN_STR	".align 2"
> +#if CONFIG_FUNCTION_ALIGNMENT > 0
> +#define ARM64_FUNCTION_ALIGNMENT	CONFIG_FUNCTION_ALIGNMENT
> +#else
> +#define ARM64_FUNCTION_ALIGNMENT	4
> +#endif
> +
> +#define __ALIGN		.balign ARM64_FUNCTION_ALIGNMENT
> +#define __ALIGN_STR	".balign " #ARM64_FUNCTION_ALIGNMENT

Isn't that much the same as having ARM64 select FUNCTION_ALIGNMENT_4B
and simply removing all these lines and relying on the default
behaviour?




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