On Fri, 26 Mar 2010, Scott Lurndal wrote: > > I wonder if Intel's EM64 stuff makes this more deterministic, perhaps > David's implementation would work for x86_64 only? Limiting it to x86-64 would certainly remove all the worries about all the historical x86 clones. I'd still worry about it for future Intel chips, though. I absolutely _detest_ relying on undocumented features - it pretty much always ends up biting you eventually. And conditional writeback is actually pretty nasty from a microarchitectural standpoint. Linus -- 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
