Zoltan Menyhart wrote on Friday, March 10, 2006 9:12 AM > Please consider the second issue I mentioned about the "itc": > Making sure that an external purge request will not be missed by our new > translation. See also on page 3:127: > > "The visibility of the itc instruction to generated purges (ptc.g, ptc.ga) must occur > before subsequent memory operations. From a software perspective, this is similar to > acquire semantics. Serialization is still required to observe the side-effects of the > translation being present." > > How to tell if this "visibility of the itc instruction to generated purges" > has already been established? > > I think a ";;" is not enough, this is why I propose this sequence: > > itc.d r25 > ;; > srlz.d > ld8 r18 = [r17] Thinking wild, I think we need a release semantics on the load. But such thing isn't available. - Ken - : 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
|