xen/events: change to using fasteoi

Change event delivery to:
 - mask+clear event in the upcall function
 - use handle_fasteoi_irq as the handler
 - unmask in the eoi function (and handle migration)

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 13365ba..8beb2bc 100644 (file)
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -378,7 +378,7 @@ int bind_evtchn_to_irq(unsigned int evtchn)
                irq = find_unbound_irq();
 
                set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,
-                                             handle_edge_irq, "event");
+                                             handle_fasteoi_irq, "event");
 
                evtchn_to_irq[evtchn] = irq;
                irq_info[irq] = mk_evtchn_info(evtchn);
@@ -664,6 +664,9 @@ static void __xen_evtchn_do_upcall(void)
                                int irq = evtchn_to_irq[port];
                                struct irq_desc *desc;
 
+                               mask_evtchn(port);
+                               clear_evtchn(port);
+
                                if (irq != -1) {
                                        desc = irq_to_desc(irq);
                                        if (desc)
@@ -801,10 +804,10 @@ static void ack_dynirq(unsigned int irq)
 {
        int evtchn = evtchn_from_irq(irq);
 
-       move_native_irq(irq);
+       move_masked_irq(irq);
 
        if (VALID_EVTCHN(evtchn))
-               clear_evtchn(evtchn);
+               unmask_evtchn(evtchn);
 }
 
 static int retrigger_dynirq(unsigned int irq)
@@ -960,7 +963,7 @@ static struct irq_chip xen_dynamic_chip __read_mostly = {
        .mask           = disable_dynirq,
        .unmask         = enable_dynirq,
 
-       .ack            = ack_dynirq,
+       .eoi            = ack_dynirq,
        .set_affinity   = set_affinity_irq,
        .retrigger      = retrigger_dynirq,
 };