BPF gains by-value struct and __int128 argument support
A verifier and JIT series lets global functions and kfuncs take small scalar aggregates without the old rejections and register miscounts.
By oops#kfuncs
BPF gains 16-byte aggregate returns via R0:R2 pair
Kernel verifier and JITs learn LLVM 23's convention so subprograms and kfuncs can return __int128 and small structs by value.
By oops