On Tuesday 23 February 2016 04:28 PM, Noam Camus wrote: >> From: Peter Zijlstra [mailto:pet...@infradead.org] >> Sent: Tuesday, February 23, 2016 12:40 PM > >> The only requirement for irq_work is that it runs after the NMI completes >> and runs from regular IRQ context. >There are no strict interrupt priority >> requirements, only that it happens. > > We here already use self IPI and irq_work on ARC (with no NMI concerns). > Please see patch at: > https://github.com/EZchip/linux/commit/e42556738e610295f917c79dae166373cd11de88
So this relies on 2nd level intc providing the IPI. For UP we still need the software triggered interrupt provided by core intc.
