Hmm... What about side effects such as pipeline stalls? fetchadd is semaphore operation. Typically we use acquire semantics for volatiles. Here the fetchadd has release semantics. If we would use release semantics then the fetchadd would require all prior accesses to be complete. Acquire semantics may be easier. But the best would be a fetchadd without any serialization that would be like the inc/dec memory on i386, which does not exist in the IA64 instruction set. - : send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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