> > I'm guessing here ... I haven't cross-checked with the architects. > > I'll be glad if we can get a comment from Intel's architects. I talked this through with an architect, and I'm right. In the sequence: ld4.acq rM = [rN] ;; mov rP = ar.itc there are no dependencies, so the read of ar.itc can occur "IMMEDIATELY after the load issues". Consuming the result of the load in between will create a dependency ... so the timestamp will be taken as we want it, after the load. So I can apply this patch (moving the "and r28 = ~1,r28"). What other time patches are you still pushing? The time interpolator changes that were predicted still look like they are pending somewhere (kernel/timer.c hasn't been changed). -Tony - To unsubscribe from this list: 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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