Are these two words typos?

In file sys/sys/smp.h, the word indenitifier on line 45 /* Hardware indenitifier of a topology component. */ and word idenitifier on line 47 /* Logical CPU idenitifier. */
Yes, it seems so. On line 4 is the address of the author. I think if you write him a short mail he will fix the typos, latest when other changes are to be applied.