On Mon, 15 Jan 2018, Mathieu Desnoyers wrote: > Introduce an architecture function that ensures the current CPU > issues a core serializing instruction before returning to usermode. > > This is needed for the membarrier "sync_core" command. > > Architectures defining the sync_core_before_usermode() static inline > need to select ARCH_HAS_SYNC_CORE_BEFORE_USERMODE. Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
