From: Matan Azrad <matan@mellanox.com>
Date: Mon, 29 Jun 2020 14:08:19 +0000 (+0000)
Subject: vhost: handle memory hotplug with vDPA devices
X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=127f9c6f7b78a47b73b3e1c39e021cc81a30b4c9

vhost: handle memory hotplug with vDPA devices

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>
---

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 4ca872842b..d9c421bc01 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -1070,6 +1070,13 @@ vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
 	}
 
 	if (dev->mem) {
+		if (dev->flags & VIRTIO_DEV_VDPA_CONFIGURED) {
+			struct rte_vdpa_device *vdpa_dev = dev->vdpa_dev;
+
+			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;