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| author |   Kees Cook <keescook@chromium.org> | 2022-02-19 17:20:02 -0800 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2022-02-26 20:32:03 -0800 |
| commit | 575d6b77fa2697afd2b3a443f7f879faa65ae0ca (patch) | |
| tree | 9dfb690f0e69086eef55ba4dbbb51a7e0a48ab64 | |
| parent | xtensa: Implement "current_stack_pointer" (diff) | |
| download | linux-dev-575d6b77fa2697afd2b3a443f7f879faa65ae0ca.tar.xz linux-dev-575d6b77fa2697afd2b3a443f7f879faa65ae0ca.zip | |
m68k: Implement "current_stack_pointer"
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: linux-m68k@lists.linux-m68k.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/lkml/CAMuHMdU6msvi0j=mS28GFYbm+uMRk7PkYe+zOM4sDmOVxeibLQ@mail.gmail.com
| -rw-r--r-- | arch/m68k/Kconfig | 1 | ||||
| -rw-r--r-- | arch/m68k/include/asm/current.h | 4 |
2 files changed, 4 insertions, 1 deletions
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..c117907e1276 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() -#endif /* CONFNIG_MMU */ +#endif /* CONFIG_MMU */ + +register unsigned long current_stack_pointer __asm__("sp"); #endif /* !(_M68K_CURRENT_H) */ |