diff options
Diffstat (limited to 'arch/arm64/include/asm/pointer_auth.h')
| -rw-r--r-- | arch/arm64/include/asm/pointer_auth.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pointer_auth.h b/arch/arm64/include/asm/pointer_auth.h index 2a22c03c1540..5ccf49b4dac3 100644 --- a/arch/arm64/include/asm/pointer_auth.h +++ b/arch/arm64/include/asm/pointer_auth.h @@ -69,6 +69,12 @@ static inline void ptrauth_keys_switch(struct ptrauth_keys *keys) */ #define ptrauth_user_pac_mask() GENMASK(54, vabits_user) +/* Only valid for EL0 TTBR0 instruction pointers */ +static inline unsigned long ptrauth_strip_insn_pac(unsigned long ptr) +{ + return ptr & ~ptrauth_user_pac_mask(); +} + #define ptrauth_thread_init_user(tsk) \ do { \ struct task_struct *__ptiu_tsk = (tsk); \ @@ -80,6 +86,7 @@ do { \ ptrauth_keys_switch(&(tsk)->thread_info.keys_user) #else /* CONFIG_ARM64_PTR_AUTH */ +#define ptrauth_strip_insn_pac(lr) (lr) #define ptrauth_thread_init_user(tsk) #define ptrauth_thread_switch(tsk) #endif /* CONFIG_ARM64_PTR_AUTH */ |