On: Resistance to Rust abstractions for DMA mapping

[AlotOfReading]

The kernel maintains in-tree drivers that break, so it does impact kernel maintenance. This isn't currently true for RfL, but in the case of a C driver anyone who wanted to go and make a breaking change would have to go and fix up breakages to merge.

[Dagonfly → AlotOfReading]

Nitpick: There are actually a handful Rust drivers in-tree, e.g. https://github.com/torvalds/linux/blob/master/drivers/net/ph...

Though, I think all of them are direct ports of existing drivers.