Re: [PATCH] KVM: Use IRQF_ONESHOT for assigned device MSI interrupts

[Avi Kivity]

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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