[dpdk-dev] [PATCH v3 01/18] net/mlx5/windows: fix miss callback register for mem event

[<michaelba@nvidia.com>]

From: Michael Baum <michaelba@oss.nvidia.com>

In device initialization, the driver registers to free hugepages events.
When husepage is released, this callback frees all its related MRs.

In Windows initialization, this callback is not registered what may
cause to use invalid memory.

This patch adds memory event callback registration in Windows
initialization.

Fixes: 980826dc6f0f ("net/mlx5: probe on Windows")
Cc: stable@dpdk.org

Signed-off-by: Michael Baum <michaelba@oss.nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
---
 drivers/net/mlx5/windows/mlx5_os.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/net/mlx5/windows/mlx5_os.c b/drivers/net/mlx5/windows/mlx5_os.c
index 149253d174..459414d5c2 100644
--- a/drivers/net/mlx5/windows/mlx5_os.c
+++ b/drivers/net/mlx5/windows/mlx5_os.c
@@ -122,8 +122,21 @@ mlx5_init_shared_data(void)
 static int
 mlx5_init_once(void)
 {
+	struct mlx5_shared_data *sd;
+
 	if (mlx5_init_shared_data())
 		return -rte_errno;
+	sd = mlx5_shared_data;
+	rte_spinlock_lock(&sd->lock);
+	MLX5_ASSERT(sd);
+	if (!sd->init_done) {
+		LIST_INIT(&sd->mem_event_cb_list);
+		rte_rwlock_init(&sd->mem_event_rwlock);
+		rte_mem_event_callback_register("MLX5_MEM_EVENT_CB",
+						mlx5_mr_mem_event_cb, NULL);
+		sd->init_done = true;
+	}
+	rte_spinlock_unlock(&sd->lock);
 	return 0;
 }
 
-- 
2.25.1