On Wed, Jun 06, 2018 at 10:36:43AM -0400, Babu Moger wrote: [...] > + /* > + * CPUID_Fn8000001E_EBX > + * 31:16 Reserved > + * 15:8 Threads per core (The number of threads per core is > + * Threads per core + 1) > + * 7:0 Core id (see bit decoding below) > + * SMT: > + * 4:3 node id > + * 2 Core complex id > + * 1:0 Core id > + * Non SMT: > + * 5:4 node id > + * 3 Core complex id > + * 1:0 Core id > + */ Where are those bit offsets documented? AMD Family 17h PPR just says "7:0 Core ID". -- Eduardo