On Wed, 11 Dec 2013, Ingo Molnar wrote: > > Another thing that is required I think is to issue a write barrier > before CLFLUSH instruction. By my (possibly incorrect ...) reading of > the documentation CLFLUSH does not appear to be ordered (at all), so > it might execute before the modification to the affected memory?
We already have a write barrier in the code which modifies current_thread_info()->flags. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/