[Qemu-devel] [PATCH v2 3/5] kvm: Hyper-V SynIC irq routing support

[Andrey Smetanin]

Signed-off-by: Andrey Smetanin <address@hidden>
Reviewed-by: Roman Kagan <address@hidden>
Signed-off-by: Denis V. Lunev <address@hidden>
CC: Paolo Bonzini <address@hidden>
CC: Richard Henderson <address@hidden>
CC: Eduardo Habkost <address@hidden>
CC: "Andreas Färber" <address@hidden>
CC: Marcelo Tosatti <address@hidden>
CC: Roman Kagan <address@hidden>
CC: Denis V. Lunev <address@hidden>
CC: address@hidden

---
 include/sysemu/kvm.h |  1 +
 kvm-all.c            | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 4ac6176..92ccb35 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -447,6 +447,7 @@ int kvm_irqchip_update_msi_route(KVMState *s, int virq, 
MSIMessage msg,
 void kvm_irqchip_release_virq(KVMState *s, int virq);
 
 int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter);
+int kvm_irqchip_add_hv_sint_route(KVMState *s, uint32_t vcpu, uint32_t sint);
 
 int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
                                        EventNotifier *rn, int virq);
diff --git a/kvm-all.c b/kvm-all.c
index 1bc1273..d36b494 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1297,6 +1297,34 @@ int kvm_irqchip_add_adapter_route(KVMState *s, 
AdapterInfo *adapter)
     return virq;
 }
 
+int kvm_irqchip_add_hv_sint_route(KVMState *s, uint32_t vcpu, uint32_t sint)
+{
+    struct kvm_irq_routing_entry kroute = {};
+    int virq;
+
+    if (!kvm_gsi_routing_enabled()) {
+        return -ENOSYS;
+    }
+    if (!kvm_check_extension(s, KVM_CAP_HYPERV_SYNIC)) {
+        return -ENOSYS;
+    }
+    virq = kvm_irqchip_get_virq(s);
+    if (virq < 0) {
+        return virq;
+    }
+
+    kroute.gsi = virq;
+    kroute.type = KVM_IRQ_ROUTING_HV_SINT;
+    kroute.flags = 0;
+    kroute.u.hv_sint.vcpu = vcpu;
+    kroute.u.hv_sint.sint = sint;
+
+    kvm_add_routing_entry(s, &kroute);
+    kvm_irqchip_commit_routes(s);
+
+    return virq;
+}
+
 #else /* !KVM_CAP_IRQ_ROUTING */
 
 void kvm_init_irq_routing(KVMState *s)
@@ -1322,6 +1350,11 @@ int kvm_irqchip_add_adapter_route(KVMState *s, 
AdapterInfo *adapter)
     return -ENOSYS;
 }
 
+int kvm_irqchip_add_hv_sint_route(KVMState *s, uint32_t vcpu, uint32_t sint)
+{
+    return -ENOSYS;
+}
+
 static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign)
 {
     abort();
-- 
2.4.3