What does that break, or was it already broken and this fixes it?I think neither. This function is only called at early bootup,
(start_secondary() ), and most of its callees have interrupts off anyway.
But maybe we do lose something. Andi, do you have a word on this?
We need to enable them somewhere, but cpu_idle will do it in the end.
So it should be safe to drop it. I guess keeping them disabled the whole
time will be a little safer against potential races.
I added the patch, but might want some cooking in -mm first because this
is always fragile code.