diff options
Diffstat (limited to 'arch/arm64/include/asm/pointer_auth.h')
| -rw-r--r-- | arch/arm64/include/asm/pointer_auth.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pointer_auth.h b/arch/arm64/include/asm/pointer_auth.h index 91c4185dda5b..2a22c03c1540 100644 --- a/arch/arm64/include/asm/pointer_auth.h +++ b/arch/arm64/include/asm/pointer_auth.h @@ -2,9 +2,11 @@ #ifndef __ASM_POINTER_AUTH_H #define __ASM_POINTER_AUTH_H +#include <linux/bitops.h> #include <linux/random.h> #include <asm/cpufeature.h> +#include <asm/memory.h> #include <asm/sysreg.h> #ifdef CONFIG_ARM64_PTR_AUTH @@ -61,6 +63,12 @@ static inline void ptrauth_keys_switch(struct ptrauth_keys *keys) __ptrauth_key_install(APGA, keys->apga); } +/* + * The EL0 pointer bits used by a pointer authentication code. + * This is dependent on TBI0 being enabled, or bits 63:56 would also apply. + */ +#define ptrauth_user_pac_mask() GENMASK(54, vabits_user) + #define ptrauth_thread_init_user(tsk) \ do { \ struct task_struct *__ptiu_tsk = (tsk); \ |