KVM: Set TMR when programming ioapic entry

We already know the trigger mode of a given interrupt when programming
the ioapice entry. So it's not necessary to set it in each interrupt
delivery.

Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

2 files changed, 11 insertions, 4 deletions

diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index f2157a985a1f..2d682977ce82 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -193,7 +193,8 @@ static void update_handled_vectors(struct kvm_ioapic *ioapic)
         smp_wmb();
 }
 
-void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)
+void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap,
+                        u32 *tmr)
 {
         struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic;
         union kvm_ioapic_redirect_entry *e;
@@ -207,8 +208,13 @@ void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)
                          kvm_irq_has_notifier(ioapic->kvm, KVM_IRQCHIP_IOAPIC,
                                  index) || index == RTC_GSI)) {
                         if (kvm_apic_match_dest(vcpu, NULL, 0,
-                                e->fields.dest_id, e->fields.dest_mode))
-                                __set_bit(e->fields.vector, (unsigned long *)eoi_exit_bitmap);
+                                e->fields.dest_id, e->fields.dest_mode)) {
+                                __set_bit(e->fields.vector,
+                                        (unsigned long *)eoi_exit_bitmap);
+                                if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG)
+                                        __set_bit(e->fields.vector,
+                                                (unsigned long *)tmr);
+                        }
                 }
         }
         spin_unlock(&ioapic->lock);
diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h
index 674a388612b4..615d8c995c3c 100644
--- a/virt/kvm/ioapic.h
+++ b/virt/kvm/ioapic.h
@@ -97,6 +97,7 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
 int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
 int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
 void kvm_vcpu_request_scan_ioapic(struct kvm *kvm);
-void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
+void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap,
+                        u32 *tmr);
 
 #endif