Posted to the Linux kernel mailing list and GNU Binutils mailing list today is an intriguing message from a longtime x86/x86_64 expert around a "a corporate entity other than Intel/AMD" using some x86 opcodes not used by AMD or Intel processors. Longtime x86 expert Christian Ludloff posted a cryptic message to the LKML and Binutils mailing lists. An anonymous Phoronix reader in turn relayed the interesting occurrence to me. Christian Ludloff has worked for Google, AMD, TI, and others over the ye...