Messages in this thread | | | Date | Mon, 11 Jun 2012 13:01:41 +0300 | From | Avi Kivity <> | Subject | Re: [PATCH] KVM: Use IRQF_ONESHOT for assigned device MSI interrupts |
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On 06/08/2012 05:50 PM, Jan Kiszka wrote: > >> >> Pls correct me if I'm wrong. > > Well, IIRC, the "don't loop over all vcpus with IRQs or preemption > disabled" was one argument against direct legacy interrupt injection as > well. That's what I kept in mind from those discussions. Maybe Avi can > comment on the current position.
It's still my position.
IMO we need something like struct gfn_to_hva_cache for interrupts. If it's in the cache, we fast-path it from the interrupt handler. If not, fall back to a workqueue and let it refill the cache.
-- error compiling committee.c: too many arguments to function
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