commit 977a8d9c0d33189b435442862a7ee943645f0947
author Andrey Smetanin <asmetanin@virtuozzo.com> Tue Nov 10 15:52:42 2015 +0300
committer Paolo Bonzini <pbonzini@redhat.com> Thu Dec 17 15:24:34 2015 +0100
tree c48744a9aacfbab564081c8e7db5d07e50368efa
parent 866eea9a130d429d14ca10212a303cffc6af6c15

kvm: Hyper-V SynIC irq routing support

Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
CC: "Andreas Färber" <afaerber@suse.de>
CC: Marcelo Tosatti <mtosatti@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

kvm-all.c

diff --git a/kvm-all.c b/kvm-all.c
index ed707fe..e78a378 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1300,6 +1300,34 @@
     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)
@@ -1325,6 +1353,11 @@
     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();