New upstream version 18.11-rc1upstream/18.11-rc1

Change-Id: Iaa71986dd6332e878d8f4bf493101b2bbc6313bb
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

1 files changed, 12 insertions, 7 deletions

diff --git a/doc/guides/nics/ena.rst b/doc/guides/nics/ena.rst
index d19912e9..34c48575 100644
--- a/doc/guides/nics/ena.rst
+++ b/doc/guides/nics/ena.rst
@@ -113,10 +113,6 @@ Configuration information
    * **CONFIG_RTE_LIBRTE_ENA_PMD** (default y): Enables or disables inclusion
      of the ENA PMD driver in the DPDK compilation.
 
-
-   * **CONFIG_RTE_LIBRTE_ENA_DEBUG_INIT** (default y): Enables or disables debug
-     logging of device initialization within the ENA PMD driver.
-
    * **CONFIG_RTE_LIBRTE_ENA_DEBUG_RX** (default n): Enables or disables debug
      logging of RX logic within the ENA PMD driver.
 
@@ -187,11 +183,20 @@ Prerequisites
 -------------
 
 #. Prepare the system as recommended by DPDK suite.  This includes environment
-   variables, hugepages configuration, tool-chains and configuration
+   variables, hugepages configuration, tool-chains and configuration.
+
+#. ENA PMD can operate with ``vfio-pci`` or ``igb_uio`` driver.
+
+#. Insert ``vfio-pci`` or ``igb_uio`` kernel module using the command
+   ``modprobe vfio-pci`` or ``modprobe igb_uio`` respectively.
+
+#. For ``vfio-pci`` users only:
+   Please make sure that ``IOMMU`` is enabled in your system,
+   or use ``vfio`` driver in ``noiommu`` mode::
 
-#. Insert igb_uio kernel module using the command 'modprobe igb_uio'
+     echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
 
-#. Bind the intended ENA device to igb_uio module
+#. Bind the intended ENA device to ``vfio-pci`` or ``igb_uio`` module.
 
 
 At this point the system should be ready to run DPDK applications. Once the