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

[Michael S. Tsirkin]

On Mon, Jun 11, 2012 at 01:01:41PM +0300, Avi Kivity wrote:
> 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.

And you class the irqfd behaviour of injecting multicast
with interrupts disabled a bug then?

> -- 
> error compiling committee.c: too many arguments to function
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