On Wed, Nov 4, 2015 at 10:38 PM, Ingo Molnar <mi...@kernel.org> wrote:
>
> but in the above sequence I think we can do even better: we don't need the
> local_irq_save()/restore() I think.
Right. Thomas added that one to my patch.
I don't think he realized just *how* trivial sending a single IPI is
with the x2apic, and just how horribly nasty the mask case is in
comparison (and how nasty it is that we historically turn a the single
ipi into a mask).
Linus
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