Re: how to callback from hypervisor to guest os?

[Jeremy Fitzhardinge <jeremy@goop.org>]

weiming wrote:
> Hi Jeremy,
>
> Thanks for your answering.
>
> If my understanding is correct, do you mean the hypervisor side should 
> look like:
>
> Xen:                                             
>
> _interrupt_handler()                                    
>   ...
>   ...
>   event_send(guest_dom) 
>   while(event_receive(&result))
>   {
>
>   }                                                  
> post: xxx()                                 
>                                                            
>   ...
> }
>

No, not at all.  It would have to be something like:

interrupt_handler()
{
	set_up_state(guest_dom);
	send_event(guest_dom);
}

...

do_my_hypercall(...)
{
	do_stuff(guest_dom);
}


    J