[wmf]

It was the instruction for interacting with XPoint DIMMs (I wouldn't call them SSDs but whatever), but now you just use CLWB instead.

[loeg]

Previously you would use CLWB, SFENCE, then PCOMMIT. Now you use CLWB, then SFENCE.

[jdmichal]

From the article, there was another SFENCE after PCOMMIT.

[loeg]

Sure.