[fwip]

One approach could be that the OS pins the process or threads to cores that support the features that were queried for.

i.e: If a process asks "can I use SVE2" and gets a yes, the OS doesn't move it to any core for which that isn't true.

[saagarjha]

Right, but as I mentioned here: https://news.ycombinator.com/item?id=23835764 (and last month: https://news.ycombinator.com/item?id=23481049) every process is going to ask this…

[fwip]

Ah, that's very a good point.