[xorblurb]

It's also integrated to new instructions to flush things and wait for them to be made persistent.

[wtallis]

Intel actually backed off on those plans, and now any regular cache flush will suffice. There are still some new cache flushing instructions, but they merely offer performance enhancements, not stronger memory safety guarantees.

https://software.intel.com/en-us/blogs/2016/09/12/deprecate-...