Messages in this thread | | | Date | Wed, 4 Nov 2015 22:46:01 -0800 | Subject | Re: [patch 02/14] x86/apic: Implement single target IPI function for x2apic_cluster | From | Linus Torvalds <> |
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On Wed, Nov 4, 2015 at 10:38 PM, Ingo Molnar <mingo@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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