net/mlx5: fix linkage of glue lib with gcc 4.7.2

addressing a gcc 4.7.2 bug that cannot be reproduced with latter
versions:

"bin/ld: Warning: alignment 8 of symbol `mlx5_glue' in
src/dpdk/drivers/net/mlx5/mlx5_glue.c.21.o is smaller than 16 in
src/dpdk/drivers/net/mlx5/mlx5_rxq.c.21.o"

Fix it be forcing the alignment of the glue lib.

Fixes: 0e83b8e536c1 ("net/mlx5: move rdma-core calls to separate file")
Cc: stable@dpdk.org
Signed-off-by: Yaroslav Brustinov <ybrustin@cisco.com>
Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>

diff --git a/drivers/net/mlx5/mlx5_glue.c b/drivers/net/mlx5/mlx5_glue.c
index c7965e5..84f9492 100644 (file)
--- a/drivers/net/mlx5/mlx5_glue.c
+++ b/drivers/net/mlx5/mlx5_glue.c
@@ -4,6 +4,7 @@
  */
 
 #include <errno.h>
+#include <stdalign.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ -23,6 +24,8 @@
 #pragma GCC diagnostic error "-Wpedantic"
 #endif
 
+#include <rte_config.h>
+
 #include "mlx5_autoconf.h"
 #include "mlx5_glue.h"
 
@@ -343,6 +346,7 @@ mlx5_glue_dv_create_qp(struct ibv_context *context,
 #endif
 }
 
+alignas(RTE_CACHE_LINE_SIZE)
 const struct mlx5_glue *mlx5_glue = &(const struct mlx5_glue){
        .version = MLX5_GLUE_VERSION,
        .fork_init = mlx5_glue_fork_init,