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authorMarcelo Tosatti <mtosatti@redhat.com>2009-01-27 15:12:38 -0200
committerAvi Kivity <avi@redhat.com>2009-03-24 11:03:08 +0200
commit44882eed2ebe7f75f8cdae5671ab1d6e0fa40dbc (patch)
treee026a4067370e2dac1a5a3a9d9995e2b6f82ba49 /virt
parent934d534f8a5a39e20d5682b3a3a45ff351706b59 (diff)
downloadlinux-linaro-stable-44882eed2ebe7f75f8cdae5671ab1d6e0fa40dbc.tar.gz
KVM: make irq ack notifications aware of routing table
IRQ ack notifications assume an identity mapping between pin->gsi, which might not be the case with, for example, HPET. Translate before acking. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Acked-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/ioapic.c10
-rw-r--r--virt/kvm/irq_comm.c13
2 files changed, 15 insertions, 8 deletions
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index e85a2bcd2db1..1c986ac59ad6 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -293,20 +293,20 @@ void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
}
}
-static void __kvm_ioapic_update_eoi(struct kvm_ioapic *ioapic, int gsi,
+static void __kvm_ioapic_update_eoi(struct kvm_ioapic *ioapic, int pin,
int trigger_mode)
{
union ioapic_redir_entry *ent;
- ent = &ioapic->redirtbl[gsi];
+ ent = &ioapic->redirtbl[pin];
- kvm_notify_acked_irq(ioapic->kvm, gsi);
+ kvm_notify_acked_irq(ioapic->kvm, KVM_IRQCHIP_IOAPIC, pin);
if (trigger_mode == IOAPIC_LEVEL_TRIG) {
ASSERT(ent->fields.trig_mode == IOAPIC_LEVEL_TRIG);
ent->fields.remote_irr = 0;
- if (!ent->fields.mask && (ioapic->irr & (1 << gsi)))
- ioapic_service(ioapic, gsi);
+ if (!ent->fields.mask && (ioapic->irr & (1 << pin)))
+ ioapic_service(ioapic, pin);
}
}
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index a797fa5e6420..7aa5086c8622 100644
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -59,10 +59,19 @@ void kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level)
e->set(e, kvm, !!(*irq_state));
}
-void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi)
+void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
{
+ struct kvm_kernel_irq_routing_entry *e;
struct kvm_irq_ack_notifier *kian;
struct hlist_node *n;
+ unsigned gsi = pin;
+
+ list_for_each_entry(e, &kvm->irq_routing, link)
+ if (e->irqchip.irqchip == irqchip &&
+ e->irqchip.pin == pin) {
+ gsi = e->gsi;
+ break;
+ }
hlist_for_each_entry(kian, n, &kvm->arch.irq_ack_notifier_list, link)
if (kian->gsi == gsi)
@@ -237,8 +246,6 @@ out:
#define ROUTING_ENTRY1(irq) IOAPIC_ROUTING_ENTRY(irq)
#ifdef CONFIG_X86
-#define SELECT_PIC(irq) \
- ((irq) < 8 ? KVM_IRQCHIP_PIC_MASTER : KVM_IRQCHIP_PIC_SLAVE)
# define PIC_ROUTING_ENTRY(irq) \
{ .gsi = irq, .type = KVM_IRQ_ROUTING_IRQCHIP, \
.u.irqchip.irqchip = SELECT_PIC(irq), .u.irqchip.pin = (irq) % 8 }