Messages in this thread | | | From | "Ren, Yongjie" <> | Subject | RE: [PATCH] KVM: Use IRQF_ONESHOT for assigned device MSI interrupts | Date | Mon, 18 Jun 2012 08:46:44 +0000 |
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> -----Original Message----- > From: Michael S. Tsirkin [mailto:mst@redhat.com] > Sent: Monday, June 11, 2012 6:22 PM > To: Avi Kivity > Cc: Jan Kiszka; Thomas Gleixner; Alex Williamson; kvm@vger.kernel.org; > mtosatti@redhat.com; linux-kernel@vger.kernel.org; Ren, Yongjie > Subject: Re: [PATCH] KVM: Use IRQF_ONESHOT for assigned device MSI > interrupts > > 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? > Hi Avi & Michael, Any more news on this issue ?
> > -- > > error compiling committee.c: too many arguments to function
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