On 3/8/21 6:09 PM, Mark Rutland wrote: >> +DECLARE_STATIC_KEY_FALSE(mte_async_mode); > Can we please hide this behind something like: > > static inline bool system_uses_mte_async_mode(void) > { > return IS_ENABLED(CONFIG_KASAN_HW_TAGS) && > static_branch_unlikely(&mte_async_mode); > } > > ... like we do for system_uses_ttbr0_pan()? >
I agree, it is a cleaner solution. I will add it to v15. > That way the callers are easier to read, and kernels built without > CONFIG_KASAN_HW_TAGS don't have the static branch at all. I reckon you > can put that in one of hte mte headers and include it where needed. -- Regards, Vincenzo