> Why is it stable material? Seems like small power optimalization to me... Before this patch, an offline CPU could prevent package-wide C-states. There is a significant power difference between being able to enter a package-wide C-state vs. not. While processor offline is not used by everybody, some products use it routinely. Indeed, MRST simply can not ship without this patch. thanks, Len Brown, Intel Open Source Technology Center _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm