The article says the following: > As far as I know this is not part of the ARM standard, but it also isn’t Apple specific: Nvidia Denver/Carmel and Fujitsu A64

The article says the following: > As far as I know this is not part of the ARM standard, but it also isn’t Apple specific: Nvidia Denver/Carmel and Fujitsu A64fx are other 64-bit ARM processors that also implement TSO (thanks to marcan for these details). I'm not sure how to interpret that—do these other parameters have distinct/proprietary TSO extensions? Are they referring to a single published (optional) extension that all three implement? The linked tweet has been deleted so no clues there, and I stopped digging.