X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fxen%2Fevents.c;h=76e5b7386af953d7a8ee7c1ff7b17ec28a0fe407;hb=607baf1f4ef94637ab0f7d0e258932851dc5c0a2;hp=c50d499b1e6f20a106e4d6c9e64a047defc7a182;hpb=e04d0d0767a9c272d3c7300fb7a5221c5e3a71eb;p=linux-2.6

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index c50d499b1e..76e5b7386a 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -469,7 +469,7 @@ irqreturn_t xen_debug_interrupt(int irq, void *dev_id)
 	for_each_online_cpu(i) {
 		struct vcpu_info *v = per_cpu(xen_vcpu, i);
 		printk("%d: masked=%d pending=%d event_sel %08lx\n  ", i,
-			(get_irq_regs() && i == cpu) ? !(get_irq_regs()->flags & X86_EFLAGS_IF) : v->evtchn_upcall_mask,
+			(get_irq_regs() && i == cpu) ? xen_irqs_disabled(get_irq_regs()) : v->evtchn_upcall_mask,
 			v->evtchn_upcall_pending,
 			v->evtchn_pending_sel);
 	}
@@ -527,7 +527,10 @@ void xen_evtchn_do_upcall(struct pt_regs *regs)
 		if (__get_cpu_var(nesting_count)++)
 			goto out;
 
-		/* NB. No need for a barrier here -- XCHG is a barrier on x86. */
+#ifndef CONFIG_X86 /* No need for a barrier -- XCHG is a barrier on x86. */
+		/* Clear master flag /before/ clearing selector flag. */
+		wmb();
+#endif
 		pending_words = xchg(&vcpu_info->evtchn_pending_sel, 0);
 		while (pending_words != 0) {
 			unsigned long pending_bits;
@@ -539,10 +542,8 @@ void xen_evtchn_do_upcall(struct pt_regs *regs)
 				int port = (word_idx * BITS_PER_LONG) + bit_idx;
 				int irq = evtchn_to_irq[port];
 
-				if (irq != -1) {
-					regs->orig_ax = ~irq;
-					do_IRQ(regs);
-				}
+				if (irq != -1)
+					xen_do_IRQ(irq, regs);
 			}
 		}
 
@@ -585,6 +586,22 @@ static void set_affinity_irq(unsigned irq, cpumask_t dest)
 	rebind_irq_to_cpu(irq, tcpu);
 }
 
+int resend_irq_on_evtchn(unsigned int irq)
+{
+	int masked, evtchn = evtchn_from_irq(irq);
+	struct shared_info *s = HYPERVISOR_shared_info;
+
+	if (!VALID_EVTCHN(evtchn))
+		return 1;
+
+	masked = sync_test_and_set_bit(evtchn, s->evtchn_mask);
+	sync_set_bit(evtchn, s->evtchn_pending);
+	if (!masked)
+		unmask_evtchn(evtchn);
+
+	return 1;
+}
+
 static void enable_dynirq(unsigned int irq)
 {
 	int evtchn = evtchn_from_irq(irq);