Re: [PATCH RFC 1/2] binfmt_elf: Wire up AT_HWCAP3 at AT_HWCAP4

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On Fri, Sep 06, 2024 at 12:05:24AM +0100, Mark Brown wrote:
> diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
> index 19fa49cd9907..32e45e65de8f 100644
> --- a/fs/binfmt_elf.c
> +++ b/fs/binfmt_elf.c
> @@ -257,6 +257,12 @@ create_elf_tables(struct linux_binprm *bprm, const struct elfhdr *exec,
>  	NEW_AUX_ENT(AT_RANDOM, (elf_addr_t)(unsigned long)u_rand_bytes);
>  #ifdef ELF_HWCAP2
>  	NEW_AUX_ENT(AT_HWCAP2, ELF_HWCAP2);
> +#endif
> +#ifdef ELF_HWCAP3
> +	NEW_AUX_ENT(AT_HWCAP3, ELF_HWCAP3);
> +#endif
> +#ifdef ELF_HWCAP4
> +	NEW_AUX_ENT(AT_HWCAP3, ELF_HWCAP4);

s/HWCAP3/HWCAP4/ for the last line.

>  #endif
>  	NEW_AUX_ENT(AT_EXECFN, bprm->exec);
>  	if (k_platform) {
> diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
> index 28a3439f163a..9365f48598a1 100644
> --- a/fs/binfmt_elf_fdpic.c
> +++ b/fs/binfmt_elf_fdpic.c
> @@ -620,6 +620,12 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm,
>  	NEW_AUX_ENT(AT_HWCAP,	ELF_HWCAP);
>  #ifdef ELF_HWCAP2
>  	NEW_AUX_ENT(AT_HWCAP2,	ELF_HWCAP2);
> +#endif
> +#ifdef ELF_HWCAP3
> +	NEW_AUX_ENT(AT_HWCAP3,	ELF_HWCAP3);
> +#endif
> +#ifdef ELF_HWCAP3
> +	NEW_AUX_ENT(AT_HWCAP4,	ELF_HWCAP4);

Same here with the ifdef.

>  #endif
>  	NEW_AUX_ENT(AT_PAGESZ,	PAGE_SIZE);
>  	NEW_AUX_ENT(AT_CLKTCK,	CLOCKS_PER_SEC);
> diff --git a/fs/compat_binfmt_elf.c b/fs/compat_binfmt_elf.c
> index 8f0af4f62631..0a219e26692a 100644
> --- a/fs/compat_binfmt_elf.c
> +++ b/fs/compat_binfmt_elf.c
> @@ -80,6 +80,21 @@
>  #define	ELF_HWCAP2		COMPAT_ELF_HWCAP2
>  #endif
>  
> +#ifdef	COMPAT_ELF_HWCAP3
> +#undef	ELF_HWCAP3
> +#define	ELF_HWCAP3		COMPAT_ELF_HWCAP3
> +#endif
> +
> +#ifdef	COMPAT_ELF_HWCAP3
> +#undef	ELF_HWCAP3
> +#define	ELF_HWCAP3		COMPAT_ELF_HWCAP3
> +#endif

Duplicate hunk.

-- 
Catalin




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