net/sfc/base: fix error code usage in common code

[dpdk.git] / doc / guides / linux_gsg / sys_reqs.rst

diff --git a/doc/guides/linux_gsg/sys_reqs.rst b/doc/guides/linux_gsg/sys_reqs.rst
index b321544..3a28c9e 100644 (file)
--- a/doc/guides/linux_gsg/sys_reqs.rst
+++ b/doc/guides/linux_gsg/sys_reqs.rst
@@ -61,8 +61,8 @@ Compilation of the DPDK
 
 *   coreutils: ``cmp``, ``sed``, ``grep``, ``arch``, etc.
 
 
 *   coreutils: ``cmp``, ``sed``, ``grep``, ``arch``, etc.
 

-*   gcc: versions 4.5.x or later is recommended for ``i686/x86_64``. Versions 4.8.x or later is recommended
-    for ``ppc_64`` and ``x86_x32`` ABI. On some distributions, some specific compiler flags and linker flags are enabled by
+*   gcc: versions 4.9 or later is recommended for all platforms.
+    On some distributions, some specific compiler flags and linker flags are enabled by

     default and affect performance (``-fstack-protector``, for example). Please refer to the documentation
     of your distribution and to ``gcc -dumpspecs``.
 
     default and affect performance (``-fstack-protector``, for example). Please refer to the documentation
     of your distribution and to ``gcc -dumpspecs``.
 


@@ -79,14 +79,12 @@ Compilation of the DPDK
 
     * glibc.ppc64, libgcc.ppc64, libstdc++.ppc64 and glibc-devel.ppc64 for IBM ppc_64;
 
 
     * glibc.ppc64, libgcc.ppc64, libstdc++.ppc64 and glibc-devel.ppc64 for IBM ppc_64;
 

-.. note::
-
-    x86_x32 ABI is currently supported with distribution packages only on Ubuntu
-    higher than 13.10 or recent Debian distribution. The only supported  compiler is gcc 4.8+.
+    .. note::

 
 

-.. note::
+       x86_x32 ABI is currently supported with distribution packages only on Ubuntu
+       higher than 13.10 or recent Debian distribution. The only supported  compiler is gcc 4.9+.

 
 

-    Python, version 2.6 or 2.7, to use various helper scripts included in the DPDK package.
+*   Python, version 2.7+ or 3.2+, to use various helper scripts included in the DPDK package.

 
 
 **Optional Tools:**
 
 
 **Optional Tools:**


@@ -202,6 +200,12 @@ On a NUMA machine, pages should be allocated explicitly on separate nodes::
 
     For 1G pages, it is not possible to reserve the hugepage memory after the system has booted.
 
 
     For 1G pages, it is not possible to reserve the hugepage memory after the system has booted.
 

+    On IBM POWER system, the nr_overcommit_hugepages should be set to the same value as nr_hugepages.
+    For example, if the required page number is 128, the following commands are used::
+
+        echo 128 > /sys/kernel/mm/hugepages/hugepages-16384kB/nr_hugepages
+        echo 128 > /sys/kernel/mm/hugepages/hugepages-16384kB/nr_overcommit_hugepages
+

 Using Hugepages with the DPDK
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Using Hugepages with the DPDK
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^