On Sat, Feb 27, 2021 at 08:59:06AM -0800, Chang S. Bae wrote:
> Define the AT_MINSIGSTKSZ in generic Linux. It is already used as generic
> ABI in glibc's generic elf.h, and this define will prevent future namespace
> conflicts. In particular, x86 is also using this generic definition.
>
> Signed-off-by: Chang S. Bae <chang.seok.bae@xxxxxxxxx>
> Reviewed-by: Len Brown <len.brown@xxxxxxxxx>
> Cc: Carlos O'Donell <carlos@xxxxxxxxxx>
> Cc: Dave Martin <Dave.Martin@xxxxxxx>
> Cc: libc-alpha@xxxxxxxxxxxxxx
> Cc: linux-arch@xxxxxxxxxxxxxxx
> Cc: linux-api@xxxxxxxxxxxxxxx
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
> Change from v5:
> * Reverted the arm64 change. (Dave Martin)
> * Massaged the changelog.
>
> Change from v4:
> * Added as a new patch (Carlos O'Donell)
> ---
> include/uapi/linux/auxvec.h | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/include/uapi/linux/auxvec.h b/include/uapi/linux/auxvec.h
> index abe5f2b6581b..15be98c75174 100644
> --- a/include/uapi/linux/auxvec.h
> +++ b/include/uapi/linux/auxvec.h
> @@ -33,5 +33,8 @@
>
> #define AT_EXECFN 31 /* filename of program */
>
> +#ifndef AT_MINSIGSTKSZ
> +#define AT_MINSIGSTKSZ 51 /* stack needed for signal delivery */
I know glibc's comment says a similar thing but the correct thing to say
here should be "minimal stack size for signal delivery" or so. Even the
variable name alludes to that too.
--
Regards/Gruss,
Boris.
SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg
