Re: [PATCH v3 46/64] x86/extable: Define ELF section entry size for exception table

[Peter Zijlstra]

On Thu, Jun 26, 2025 at 04:55:33PM -0700, Josh Poimboeuf wrote:

> @@ -193,7 +193,8 @@ static __always_inline __pure void *rip_rel_ptr(void *p)
>  	".purgem extable_type_reg\n"
>  
>  # define _ASM_EXTABLE_TYPE(from, to, type)			\
> -	" .pushsection \"__ex_table\",\"a\"\n"			\
> +	" .pushsection __ex_table, \"aM\", @progbits, "		\
> +		       __stringify(EXTABLE_SIZE) "\n"		\
>  	" .balign 4\n"						\
>  	" .long (" #from ") - .\n"				\
>  	" .long (" #to ") - .\n"				\
> @@ -201,7 +202,8 @@ static __always_inline __pure void *rip_rel_ptr(void *p)
>  	" .popsection\n"
>  
>  # define _ASM_EXTABLE_TYPE_REG(from, to, type, reg)				\
> -	" .pushsection \"__ex_table\",\"a\"\n"					\
> +	" .pushsection __ex_table, \"aM\", @progbits, "				\
> +		       __stringify(EXTABLE_SIZE) "\n"				\
>  	" .balign 4\n"								\
>  	" .long (" #from ") - .\n"						\
>  	" .long (" #to ") - .\n"						\

This style is much better.