In uncore_programming_guid QPI LL's match0 register tell us DNID has 5bit [17:13] , but as I know the Node id in Ivy bridge only take 4bit,bit[3,1:0] for socket id. bit 2 for CA ,HA0 or HA1. How can I set DNID properly?
Can you provide more information on what you are trying to do? What manual (URL reference, version)... page number, registers you are working with, so we can have try to answer your question.