Re: [PATCH v3 1/1] x86/elf: Add a new .note section containing xfeatures buffer layout info to x86 core files

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On Fri, Jul 12 2024 at 15:16, Vignesh Balasubramanian wrote:
> diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
> index 1fb83d477..cad37090b 100644
> --- a/arch/x86/include/asm/elf.h
> +++ b/arch/x86/include/asm/elf.h
> @@ -13,6 +13,15 @@
>  #include <asm/auxvec.h>
>  #include <asm/fsgsbase.h>
>  
> +struct xfeat_component {
> +	u32 type;
> +	u32 size;
> +	u32 offset;
> +	u32 flags;
> +} __packed;
> +
> +_Static_assert(sizeof(struct xfeat_component)%4 == 0, "xfeat_component is not aligned");

This struct is only used in xstate.c and asm/elf.h is not a UAPI
header. So what's the point of declaring it in the header instead of
xtsate.c?

If this needs to provided for user space consumption, then it want's to
be in a UAPI header, no?

Thanks,

        tglx




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