Messages in this thread Patch in this message | | | From | Kees Cook <> | Subject | [PATCH] m68k: Implement "current_stack_pointer" | Date | Wed, 23 Feb 2022 22:04:48 -0800 |
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To follow the existing per-arch conventions, add asm "sp" as "current_stack_pointer". This will let it be used in non-arch places (like HARDENED_USERCOPY).
Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: linux-m68k@lists.linux-m68k.org Signed-off-by: Kees Cook <keescook@chromium.org> --- arch/m68k/Kconfig | 1 + arch/m68k/include/asm/current.h | 2 ++ 2 files changed, 3 insertions(+)
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 936e1803c7c7..f0eac0e2f123 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -4,6 +4,7 @@ config M68K default y select ARCH_32BIT_OFF_T select ARCH_HAS_BINFMT_FLAT + select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS diff --git a/arch/m68k/include/asm/current.h b/arch/m68k/include/asm/current.h index 6390ef2f7f86..0c87a7047e15 100644 --- a/arch/m68k/include/asm/current.h +++ b/arch/m68k/include/asm/current.h @@ -24,6 +24,8 @@ static inline struct task_struct *get_current(void) #define current get_current() +register unsigned long current_stack_pointer __asm__("sp"); + #endif /* CONFNIG_MMU */ #endif /* !(_M68K_CURRENT_H) */ -- 2.30.2
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