Hi Peter, > That said; flipping static keys early isn't hard. We should call > jump_label_init() early, because we want the entries sorted and the > key->entries link set. It will also replace the GENERIC_NOP5_ATOMIC > thing, which means we need to also do arch_init_ideal_nop() early, but > since that is pure CPUID based that should be doable. > > And then something like the below could be used.
I like the idea of making static branches available early, as it can be used in more places during boot. However, that should be part of a separate project, and a follow up cleanup can be done to places that benefit from it. Such as tsc.c and perhaps sched.c might benefit as well. Thank you, Pavel
