For anyone else who was also seeing just garbled characters in the title, and since the first few paragraphs of the linked article don't explain what that is:
GF2P8AFFINEQB is one of the AVX-512 CPU instructions that performs an affine transformation (essentially AX+b) on a Galois field - finite number fields used in coding theory and cryptography.
GF2P8AFFINEQB is one of the AVX-512 CPU instructions that performs an affine transformation (essentially AX+b) on a Galois field - finite number fields used in coding theory and cryptography.
https://en.wikipedia.org/wiki/AVX-512#GFNI