Hi Mark,
does the appended patch to Xen help by any chances?
- Stefano
---
diff -r a79c1d5b946e xen/arch/x86/irq.c
--- a/xen/arch/x86/irq.c Fri Aug 19 10:00:25 2011 +0100
+++ b/xen/arch/x86/irq.c Thu Aug 25 15:40:02 2011 +0000
@@ -1876,7 +1876,7 @@ int hvm_domain_use_pirq(struct domain *d
return 0;
emuirq = domain_pirq_to_emuirq(d, pirq);
- if ( emuirq != IRQ_UNBOUND && d->pirq_to_evtchn[pirq] != 0 )
+ if ( emuirq != IRQ_UNBOUND )
return 1;
else
return 0;
diff -r a79c1d5b946e xen/arch/x86/physdev.c
--- a/xen/arch/x86/physdev.c Fri Aug 19 10:00:25 2011 +0100
+++ b/ xen/arch/x86/physdev.c Thu Aug 25 15:40:02 2011 +0000
@@ -202,9 +202,6 @@ static int physdev_map_pirq(struct physd
if ( ret == 0 )
map->pirq = pirq;
- if ( !ret && is_hvm_domain(d) )
- map_domain_emuirq_pirq(d, pirq, IRQ_PT);
-
done:
spin_unlock(&d->event_lock);
spin_unlock(&pcidevs_lock);
@@ -267,7 +264,7 @@ ret_t do_physdev_op(int cmd, XEN_GUEST_H
if ( v->domain->arch.pirq_eoi_map )
evtchn_unmask(v->domain->pirq_to_evtchn[eoi.irq]);
if ( !is_hvm_domain(v->domain) ||
- domain_pirq_to_emuirq(v->domain, eoi.irq) == IRQ_PT )
+ domain_pirq_to_irq(v->domain, eoi.irq) > 0 )
ret = pirq_guest_eoi(v->domain, eoi.irq);
else
ret = 0;
@@ -326,7 +323,7 @@ ret_t do_physdev_op(int cmd, XEN_GUEST_H
break;
irq_status_query.flags = 0;
if ( is_hvm_domain(v->domain) &&
- domain_pirq_to_emuirq(v->domain, irq) != IRQ_PT )
+ domain_pirq_to_irq(v->domain, irq) > 0 )
{
ret = copy_to_guest(arg, &irq_status_query, 1) ? -EFAULT : 0;
break;
diff -r a79c1d5b946e xen/common/event_channel.c
--- a/xen/common/event_channel.c Fri Aug 19 10:00:25 2011 +0100
+++ b/xen/common/event_channel.c Thu Aug 25 15:40:02 2011 +0000
@@ -361,6 +361,9 @@ static long evtchn_bind_pirq(evtchn_bind
bind->port = port;
+ if ( is_hvm_domain(d) && domain_pirq_to_irq(d, pirq) > 0 )
+ map_domain_emuirq_pirq(d, pirq, IRQ_PT);
+
out:
spin_unlock(&d->event_lock);
@@ -409,6 +412,8 @@ static long __evtchn_close(struct domain
pirq_guest_unbind(d1, chn1->u.pirq.irq);
d1->pirq_to_evtchn[chn1->u.pirq.irq] = 0;
unlink_pirq_port(chn1, d1->vcpu[chn1->notify_vcpu_id]);
+ if ( is_hvm_domain(d1) && domain_pirq_to_irq(d1, chn1->u.pirq.irq) > 0
)
+ unmap_domain_pirq_emuirq(d1, chn1->u.pirq.irq);
break;
case ECS_VIRQ:
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