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-rw-r--r--hw/core/machine.c1
-rw-r--r--hw/virtio/virtio-mem-pci.c12
2 files changed, 13 insertions, 0 deletions
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 8f396ef803..7b74cde10a 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -41,6 +41,7 @@ GlobalProperty hw_compat_9_2[] = {
     { "virtio-balloon-pci", "vectors", "0" },
     { "virtio-balloon-pci-transitional", "vectors", "0" },
     { "virtio-balloon-pci-non-transitional", "vectors", "0" },
+    { "virtio-mem-pci", "vectors", "0" },
 };
 const size_t hw_compat_9_2_len = G_N_ELEMENTS(hw_compat_9_2);
 
diff --git a/hw/virtio/virtio-mem-pci.c b/hw/virtio/virtio-mem-pci.c
index 1b4e9a3284..6cc5f0fd3b 100644
--- a/hw/virtio/virtio-mem-pci.c
+++ b/hw/virtio/virtio-mem-pci.c
@@ -22,6 +22,10 @@ static void virtio_mem_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     VirtIOMEMPCI *mem_pci = VIRTIO_MEM_PCI(vpci_dev);
     DeviceState *vdev = DEVICE(&mem_pci->vdev);
 
+    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
+        vpci_dev->nvectors = 2;
+    }
+
     virtio_pci_force_virtio_1(vpci_dev);
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
@@ -152,6 +156,13 @@ static void virtio_mem_pci_set_requested_size(Object *obj, Visitor *v,
     object_property_set(OBJECT(&pci_mem->vdev), name, v, errp);
 }
 
+static const Property virtio_mem_pci_class_properties[] = {
+    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
+                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
+    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
+                       DEV_NVECTORS_UNSPECIFIED),
+};
+
 static void virtio_mem_pci_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -164,6 +175,7 @@ static void virtio_mem_pci_class_init(ObjectClass *klass, void *data)
     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
     pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
     pcidev_k->class_id = PCI_CLASS_OTHERS;
+    device_class_set_props(dc, virtio_mem_pci_class_properties);
 
     mdc->get_addr = virtio_mem_pci_get_addr;
     mdc->set_addr = virtio_mem_pci_set_addr;