What does Transactional Synchronization Extensions (TSX) processor technology mean to vulnerability exploits (e.g. Brute Forcing)?

Intel Transactional Synchronization Extensions (TSX) was introduced since from Haswell processor with adding hardware transactional memory support. It was originally design to speed up execution of multi-threaded software through lock elision. Every new technology has both good side and evil side, then how about TSX extension? What can we use it to do for vulnerability exploits and its defenses?