On Tue, Apr 25, 2017 at 05:22:36PM +0200, Peter Zijlstra wrote: > On Tue, Apr 25, 2017 at 05:12:00PM +0200, Peter Zijlstra wrote: > > But I'll first try and figure out why I'm not having empty masks. > > Ah, so this is before all the degenerate stuff, so there's a bunch of > redundant domains below that make it work -- and there always will be, > unless FORCE_SD_OVERLAP. > > Now I wonder what triggered it.. let me put it back.
Ah! the asymmetric setup, where @sibling is entirely uninitialized for the top domain.
