path: root/doc/guides/nics/mlx5.rst
diff options
authorYongseok Koh <>2019-04-01 14:17:55 -0700
committerFerruh Yigit <>2019-04-05 17:45:22 +0200
commitc18cf501a7af30715ba9984b0d05ab4cd9298b05 (patch)
tree6e1dc7eca6908a47eea6119c5dfa6a40e7340c17 /doc/guides/nics/mlx5.rst
parentdceb5029425175c93d5d56677393cbc7a44f29e5 (diff)
net/mlx5: enable secondary process to register DMA memory
The Memory Region (MR) for DMA memory can't be created from secondary process due to lib/driver limitation. Whenever it is needed, secondary process can make a request to primary process through the EAL IPC channel (rte_mp_msg) which is established on initialization. Once a MR is created by primary process, it is immediately visible to secondary process because the MR list is global per a device. Thus, secondary process can look up the list after the request is successfully returned. Signed-off-by: Yongseok Koh <> Acked-by: Shahaf Shuler <>
Diffstat (limited to 'doc/guides/nics/mlx5.rst')
1 files changed, 0 insertions, 1 deletions
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index e5e3d90..5fa6b62 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -85,7 +85,6 @@ Limitations
- For secondary process:
- Forked secondary process not supported.
- - All mempools must be initialized before rte_eth_dev_start().
- External memory unregistered in EAL memseg list cannot be used for DMA
unless such memory has been registered by ``mlx5_mr_update_ext_mp()`` in
primary process and remapped to the same virtual address in secondary