[PATCH v6 4/9] vhost-vdpa: add support for config interrupt call back

[Cindy Lu]

Add new call back function in vhost-vdpa, this call back function only
supported in vhost-vdpa backend

Signed-off-by: Cindy Lu <lulu@redhat.com>
---
 hw/virtio/trace-events | 2 ++
 hw/virtio/vhost-vdpa.c | 7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events
index 2060a144a2..6710835b46 100644
--- a/hw/virtio/trace-events
+++ b/hw/virtio/trace-events
@@ -52,6 +52,8 @@ vhost_vdpa_set_vring_call(void *dev, unsigned int index, int 
fd) "dev: %p index:
 vhost_vdpa_get_features(void *dev, uint64_t features) "dev: %p features: 
0x%"PRIx64
 vhost_vdpa_set_owner(void *dev) "dev: %p"
 vhost_vdpa_vq_get_addr(void *dev, void *vq, uint64_t desc_user_addr, uint64_t 
avail_user_addr, uint64_t used_user_addr) "dev: %p vq: %p desc_user_addr: 
0x%"PRIx64" avail_user_addr: 0x%"PRIx64" used_user_addr: 0x%"PRIx64
+vhost_vdpa_set_config_call(void *dev, int *fd)"dev: %p fd: %p"
+
 
 # virtio.c
 virtqueue_alloc_element(void *elem, size_t sz, unsigned in_num, unsigned 
out_num) "elem %p size %zd in_num %u out_num %u"
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 01d2101d09..9ba2a2bed4 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -545,6 +545,12 @@ static int vhost_vdpa_set_vring_call(struct vhost_dev *dev,
     trace_vhost_vdpa_set_vring_call(dev, file->index, file->fd);
     return vhost_vdpa_call(dev, VHOST_SET_VRING_CALL, file);
 }
+static int vhost_vdpa_set_config_call(struct vhost_dev *dev,
+                                       int *fd)
+{
+    trace_vhost_vdpa_set_config_call(dev, fd);
+    return vhost_vdpa_call(dev, VHOST_VDPA_SET_CONFIG_CALL, fd);
+}
 
 static int vhost_vdpa_get_features(struct vhost_dev *dev,
                                      uint64_t *features)
@@ -611,4 +617,5 @@ const VhostOps vdpa_ops = {
         .vhost_get_device_id = vhost_vdpa_get_device_id,
         .vhost_vq_get_addr = vhost_vdpa_vq_get_addr,
         .vhost_force_iommu = vhost_vdpa_force_iommu,
+        .vhost_set_config_call = vhost_vdpa_set_config_call,
 };
-- 
2.21.3