On Tue, 8 Mar 2022 04:27:33 +1000, Nicholas Piggin wrote:
> The sad tale of SIGSTKSZ and MINSIGSTKSZ is documented in glibc.git
> commit f7c399cff5bd ("PowerPC SIGSTKSZ"), which explains why glibc
> does not use the kernel defines for these constants. Since then in
> fact there has been a further expansion of the signal stack frame size
> on little-endian with linux commit 573ebfa6601f ("powerpc: Increase
> stack redzone for 64-bit userspace to 512 bytes"), which has caused
> it to exceed even the glibc defines.
>
> [...]
Applied to powerpc/next.
[1/2] powerpc/64: Bump SIGSTKSZ and MINSIGSTKSZ
https://git.kernel.org/powerpc/c/2f82ec19757f58549467db568c56e7dfff8af283
[2/2] powerpc/signal: Report minimum signal frame size to userspace via
AT_MINSIGSTKSZ
https://git.kernel.org/powerpc/c/2896b2dff49d0377e4372f470dcddbcb26f2be59
cheers
