[dpdk-dev] [PATCH v3 4/6] vhost: handle memory hotplug with vDPA devices

[Matan Azrad <matan@mellanox.com>]

Some vDPA drivers' basic configurations should be updated when the
guest memory is hotplugged.

Close vDPA device before hotplug operation and recreate it after the
hotplug operation is done.

Signed-off-by: Matan Azrad <matan@mellanox.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
---
 lib/librte_vhost/vhost_user.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index b90fc78..f690fdb 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -1073,6 +1073,15 @@
 	}
 
 	if (dev->mem) {
+		if (dev->flags & VIRTIO_DEV_VDPA_CONFIGURED) {
+			int did = dev->vdpa_dev_id;
+			struct rte_vdpa_device *vdpa_dev =
+						rte_vdpa_get_device(did);
+
+			if (vdpa_dev && vdpa_dev->ops->dev_close)
+				vdpa_dev->ops->dev_close(dev->vid);
+			dev->flags &= ~VIRTIO_DEV_VDPA_CONFIGURED;
+		}
 		free_mem_region(dev);
 		rte_free(dev->mem);
 		dev->mem = NULL;
-- 
1.8.3.1