Re: [Xen-devel] [PATCH] xen: do not loose level interrupt notifications

[Keir Fraser <keir.xen@xxxxxxxxx>]

On 27/10/2011 12:42, "Stefano Stabellini" <stefano.stabellini@xxxxxxxxxxxxx>
wrote:

>> Is PV-HVM so different?
> 
> Yes, it is. In the PV on HVM case we need to reassert an emulated
> interrupt if the guest EOIs it without quenching the interrupt in the
> ISR.
> We are doing it already in the emulated code path but we are not doing
> it for interrupts that have been remapped into pirqs.
> 
> That said, if we don't care about the PV case we can simplify the patch,
> I am appending a new one that only takes care of the PV on HVM case.

Ah yes, when we are *emulating* an INTx line, either for an emulated device
or because we are doing MSI-INTx emulation, we do have to remember to
reassert. That makes sense.

 -- Keir



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