IB/mlx5: Implement on demand paging by adding support for MMU notifiers
* Implement the relevant invalidation functions (zap MTTs as needed)
* Implement interlocking (and rollback in the page fault handlers) for
cases of a racing notifier and fault.
* With this patch we can now enable the capability bits for supporting RC
send/receive/RDMA read/RDMA write, and UD send.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Shachar Raindel <raindel@mellanox.com>
Signed-off-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index a801baa..8a87404 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -574,6 +574,10 @@
goto out_count;
}
+#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
+ context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range;
+#endif
+
INIT_LIST_HEAD(&context->db_page_list);
mutex_init(&context->db_page_mutex);