Restricted DMA

Posted Jan 8, 2021 13:34 UTC (Fri) by foom (subscriber, #14868)
In reply to: Restricted DMA by mjg59
Parent article: Restricted DMA

Now also known as "USB4".

Restricted DMA

Posted Jan 14, 2021 5:20 UTC (Thu) by marcH (subscriber, #57642) [Link]

> [Thunderbolt] Now also known as "USB4".

No, there is absolutely _nothing_ simple in that area.

USB4 re-uses the low layers of Thunderbolt but the Thunderbolt protocol is optional in USB4.

Meaningless "USB-C" and tunneling were not confusing enough, so they decided to double down.

The only way to make this clearer would have been to name the different layers independently as in networking (no one confuses HTTP with Ethernet) because they _are_ independent now. Too late.