The first microcode version including the change to disable TSX NII ended in 23. I see that yours ends in 19; however, it is up to the motherboard manufacturer as to what microcode updates they choose to apply.
Do you know where i can find a copy of the Intel paper that shows the microcode changes for this CPU? Also is there any chance of erratic behavior with this extension enabled since I do not believe there is any code that uses it right now...
Anyone from Intel in here? Would like an answer to initial question...Thanks
I am afraid the information about microcode changes is not publicly available.
There is no risk of unreliable behavior unless you are explicitly using a program that makes use of the TSX instructions.