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Re: [Xen-devel] how to callback from hypervisor to guest os?
- To: "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>
- From: weiming <zephyr.zhao@xxxxxxxxx>
- Date: Mon, 7 Jul 2008 18:14:47 -0400
- Cc: Xen Developers <xen-devel@xxxxxxxxxxxxxxxxxxx>, Daniel Stodden <stodden@xxxxxxxxxx>
- Delivery-date: Mon, 07 Jul 2008 15:15:09 -0700
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Do you mean making a hypercall after guest domain finishes processing? If so, in xen, after event_send(), will xxx() be executed immediately (non-blocking)?
Xen: Guest:
_interrupt_handler()
{
...
...
event_send(guest_dom) event_virq_handler()
post: xxx() {
do_process()
hypercall_xxx()?
}
...
}
On Mon, Jul 7, 2008 at 5:57 PM, Jeremy Fitzhardinge < jeremy@xxxxxxxx> wrote:
weiming wrote:
Hi Daniel,
Event channel is one-way and async, right?
When hypervisor send a notification to guest within a interrupt handler, can the guest receive and response to the notification? If yes, after guest finished processing, can the control be back to xen?
J
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