On Tue, Oct 28, 2014 at 2:16 PM, Benjamin Herrenschmidt <b...@kernel.crashing.org> wrote: >> >> Can't you just do a full invalidate and a SW IPI for larger ranges? > > For us, this would be great except ... we can potentially have other > agents with an MMU that only support snooping of the broadcasts...
Ugh. Oh well. I guess on power you need to walk all the hashed entries individually _anyway_, so there's no way you could really use a range-based or "invalidate all" model to avoid some of the work. Linus -- 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/