4 ms·Could you eleblrate what PCID is and which models (CPUs) Support that?by Matt3o12_ 9y agoCould you eleblrate what PCID is and which models (CPUs) Support that?tadfisher 9y agoProcess context identifiers, which are basically tags for regions of cache/TLB, allowing for fast context switching on multi-CPU systems. Introduced in Haswell I believe.jorvi 9y agoReading the Twitter responses PCID was introduced with Westmere and INVPCID with Haswell.