linux-kernel - Re: [PATCH v2 02/16] elf, uapi: Add definition for STN

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Message-ID: <289933df-3ffb-4a40-9d71-7f4bb3d4020d@arm.com>
Date: Fri, 28 Feb 2025 12:23:17 +0000
From: Vincenzo Frascino <vincenzo.frascino@....com>
To: Thomas Weißschuh <thomas.weissschuh@...utronix.de>,
 Kees Cook <kees@...nel.org>, Eric Biederman <ebiederm@...ssion.com>,
 Shuah Khan <shuah@...nel.org>, Nathan Chancellor <nathan@...nel.org>,
 Nick Desaulniers <ndesaulniers@...gle.com>, Bill Wendling
 <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>,
 Andy Lutomirski <luto@...nel.org>, Thomas Gleixner <tglx@...utronix.de>,
 Willy Tarreau <w@....eu>, Thomas Weißschuh
 <linux@...ssschuh.net>
Cc: "Jason A. Donenfeld" <Jason@...c4.com>,
 Christophe Leroy <christophe.leroy@...roup.eu>, linux-mm@...ck.org,
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
 llvm@...ts.linux.dev
Subject: Re: [PATCH v2 02/16] elf, uapi: Add definition for STN_UNDEF

On 26/02/2025 11:44, Thomas Weißschuh wrote:
> The definition is used by tools/testing/selftests/vDSO/parse_vdso.c.
> To be able to build the vDSO selftests without a libc dependency,
> add the definition to the kernels own UAPI headers.
> 
> Link: https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.symtab.html
> Reviewed-by: Kees Cook <kees@...nel.org>
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
> ---
>  include/uapi/linux/elf.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
> index b44069d29cecc0f9de90ee66bfffd2137f4275a8..448695c7364042b10682acc8223eb6053ad039dd 100644
> --- a/include/uapi/linux/elf.h
> +++ b/include/uapi/linux/elf.h
> @@ -125,6 +125,8 @@ typedef __s64	Elf64_Sxword;
>  #define STB_GLOBAL 1
>  #define STB_WEAK   2
>  
> +#define STN_UNDEF 0
> +
>  #define STT_NOTYPE  0
>  #define STT_OBJECT  1
>  #define STT_FUNC    2
> 

Reviewed-by: Vincenzo Frascino <vincenzo.frascino@....com>

-- 
Regards,
Vincenzo