https://bugs.winehq.org/show_bug.cgi?id=40191
--- Comment #6 from Alexandre Julliard julliard@winehq.org --- (In reply to Sebastian Lackner from comment #5)
My understanding is that Wine currently targets more Win 7 than Win 8+, and there a value of 0 consistently sets SpinCount = 0, even on multicore systems (at least my systems, and I'm not aware of any test failures). Of course broken() doesn't mean that we'll not consider implementing it, when we change our focus to new Windows versions or have applications which depend on it.
Wine does not "target" a Windows version, and there's no reason not to implement a Win8 behavior if it's considered useful. Of course we don't need this right now, and it's unlikely that an app is going to break because of this, so it doesn't make much difference. But in general, broken() should be only for things that we consider undesirable to implement, also in the future.