Re: [Xen-devel] [PATCH] Change spec of callback IRQ for PV-on-HVMonIA64

[Doi.Tsunehisa@xxxxxxxxxxxxxx]

Hi Kevin,

You (kevin.tian) said:
>>  I think that the other OS register evtchn_interrupt at own vector
>>determined by itself for GSI(0x9).
>>
> 
> OK, I see your point. One interesting question is, since you don't
> know what the own vector used by other OS is, how do you do 
> translation within xen to inject at own vector wanted by other OS? 
> If there's a way to tell, why not tell at set_callback_irq time? :-)

  In my experience, the other OS has device driver interface to notice
GSI for the device. It tells the vector to the interrupt controller
in kenrel code, not device driver. So, we can't know the vector, I think.

Thanks,
- Tsunehisa Doi

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