When bind the ``uio_pci_generic`` module in X710/XL710/XXV710,
the result is failed. The ``uio_pci_generic`` module is not
supported by X710/XL710/XXV710.
Signed-off-by: Jeff Guo <jia....@intel.com>
Acked-by: Jingjing Wu <jingjing...@intel.com>
---
v4: modify the signed-off name to be consistent and fix make doc issue.
v3: add related linux kernel commit info and fix some syntax issues
v2: add X710/XXV710 limitation case
---
doc/guides/rel_notes/known_issues.rst | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/doc/guides/rel_notes/known_issues.rst
b/doc/guides/rel_notes/known_issues.rst
index 3cd4237..018e999 100644
--- a/doc/guides/rel_notes/known_issues.rst
+++ b/doc/guides/rel_notes/known_issues.rst
@@ -640,3 +640,29 @@ I40e VF may not receive packets in the promiscuous mode
**Driver/Module**:
Poll Mode Driver (PMD).
+
+
+uio pci generic module bind failed in X710/XL710/XXV710
+-------------------------------------------------------
+
+**Description**:
+ The ``uio_pci_generic`` module is not supported by XL710, since the errata
of XL710
+ states that the Interrupt Status bit is not implemented. The errata is the
item #71
+ from the `xl710 controller spec
+
<http://www.intel.com/content/www/us/en/embedded/products/networking/xl710-10-40-controller-spec-update.html>`_.
+ The hw limitation is the same as other X710/XXV710 NICs.
+
+**Implication**:
+ When use ``--bind=uio_pci_generic``, the ``uio_pci_generic`` module probes
device and check the Interrupt
+ Status bit. Since it is not supported by X710/XL710/XXV710, it return a
*failed* value. The statement
+ that these products don’t support INTx masking, is indicated in the related
`linux kernel commit
+
<https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/drivers/pci/quirks.c?id=8bcf4525c5d43306c5fd07e132bc8650e3491aec>`_.
+
+**Resolution/Workaround**:
+ Do not bind the ``uio_pci_generic`` module in X710/XL710/XXV710 NICs.
+
+**Affected Environment/Platform**:
+ All.
+
+**Driver/Module**:
+ Poll Mode Driver (PMD).
--
2.7.4
