* Catalin Marinas <catalin.marinas@xxxxxxx> [120814 11:05]: > This patch adds SMP initialisation and spinlocks implementation for > AArch64. The spinlock support uses the new load-acquire/store-release > instructions to avoid explicit barriers. The architecture also specifies > that an event is automatically generated when clearing the exclusive > monitor state to wake up processors in WFE, so there is no need for an > explicit DSB/SEV instruction sequence. The SEVL instruction is used to > set the exclusive monitor locally as there is no conditional WFE and a > branch is more expensive. Do we always have SMP hardware on arm64? Or are we going to need to again add smp_on_up support later on? Other than that: Acked-by: Tony Lindgren <tony@xxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
