diff options
Diffstat (limited to 'arch/arm64/include/asm/mte.h')
| -rw-r--r-- | arch/arm64/include/asm/mte.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/mte.h b/arch/arm64/include/asm/mte.h index 8603c6636a7d..9a929620ca5d 100644 --- a/arch/arm64/include/asm/mte.h +++ b/arch/arm64/include/asm/mte.h @@ -98,11 +98,40 @@ static inline bool system_uses_mte_async_mode(void) { return static_branch_unlikely(&mte_async_mode); } + +void mte_check_tfsr_el1(void); + +static inline void mte_check_tfsr_entry(void) +{ + mte_check_tfsr_el1(); +} + +static inline void mte_check_tfsr_exit(void) +{ + /* + * The asynchronous faults are sync'ed automatically with + * TFSR_EL1 on kernel entry but for exit an explicit dsb() + * is required. + */ + dsb(nsh); + isb(); + + mte_check_tfsr_el1(); +} #else static inline bool system_uses_mte_async_mode(void) { return false; } +static inline void mte_check_tfsr_el1(void) +{ +} +static inline void mte_check_tfsr_entry(void) +{ +} +static inline void mte_check_tfsr_exit(void) +{ +} #endif /* CONFIG_KASAN_HW_TAGS */ #endif /* __ASSEMBLY__ */ |