Re: [PATCH 2/3] KVM: Add gsi_msg_pending_bitmap for MSI-X

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On Wednesday 18 February 2009 19:29:28 Avi Kivity wrote:
> Sheng Yang wrote:
> > On Wednesday 18 February 2009 19:00:53 Avi Kivity wrote:
> >> Sheng Yang wrote:
> >>> We have to handle more than one interrupt with one handler for MSI-X.
> >>> So we need a bitmap to track the triggered interrupts.
> >>
> >> Can you explain why?
> >
> > Or how can we know which interrupt happened? Current we scheduled the
> > work later, and no more irq information available at that time.
>
> We can have a work_struct per interrupt, or we can set a flag in the
> msix array that the interrupt is pending.

As I know, work_struct itself don't take any data. And host MSI-X array is a 
type of msix_entry* which is used for pci_enable_msix. But modifying type of 
guest msix entries should be OK. I will try.

-- 
regards
Yang, Sheng
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