That Milk V Pioneer system looks it could actually be a decent Workstation. Clock rate is a little low for that though… even so pretty impressive.
It actually has 3x 8x slots which is better than most x86 boards have. IMO PCIe 5.0 and 4.0 suck… because they are often implemented without enough lanes because the IO is too expensive, we’d literally be better off with 4x full 16x lanes on x86 than the nonsese we have with 4x and 1x lanes on 16x connectors.
Looks like VisionFive 2 basically works, but not upstreamed yet, and no boot images or RISC-V haikuports, either. From the last monthly report I think upstream haiku merges are happening gradually, though.
There are still unsolved problem with USB 1 devices such as mouse or keyboard. Currently only single connected USB 1 device work properly so you can’t connect keyboard and USB mouse at the same time. USB 2 and 3 are fine.