X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Flinux_gsg%2Fsys_reqs.rst;h=d2359058bf6bd98ac6b01ea1ca2f8532c50fa703;hb=eba11e36461404109cfe9ed0c5daaa3e80725122;hp=5ff740fc42b7be47f082290563cec65b71be5b5e;hpb=90f3229fc072dbf653e6e1f1b66b4611951385be;p=dpdk.git

diff --git a/doc/guides/linux_gsg/sys_reqs.rst b/doc/guides/linux_gsg/sys_reqs.rst
index 5ff740fc42..d2359058bf 100644
--- a/doc/guides/linux_gsg/sys_reqs.rst
+++ b/doc/guides/linux_gsg/sys_reqs.rst
@@ -1,32 +1,5 @@
-..  BSD LICENSE
-    Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
-    All rights reserved.
-
-    Redistribution and use in source and binary forms, with or without
-    modification, are permitted provided that the following conditions
-    are met:
-
-    * Redistributions of source code must retain the above copyright
-    notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above copyright
-    notice, this list of conditions and the following disclaimer in
-    the documentation and/or other materials provided with the
-    distribution.
-    * Neither the name of Intel Corporation nor the names of its
-    contributors may be used to endorse or promote products derived
-    from this software without specific prior written permission.
-
-    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+..  SPDX-License-Identifier: BSD-3-Clause
+    Copyright(c) 2010-2014 Intel Corporation.
 
 System Requirements
 ===================
@@ -61,8 +34,8 @@ Compilation of the DPDK
 
 .. note::
 
-    Testing has been performed using Fedora 18. The setup commands and installed packages needed on other systems may be different.
-    For details on other Linux distributions and the versions tested, please consult the DPDK Release Notes.
+    The setup commands and installed packages needed on various systems may be different.
+    For details on Linux distributions and the versions tested, please consult the DPDK Release Notes.
 
 *   GNU ``make``.
 
@@ -91,10 +64,28 @@ Compilation of the DPDK
        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+.
 
-*   libnuma-devel - library for handling NUMA (Non Uniform Memory Access).
+*   Library for handling NUMA (Non Uniform Memory Access).
+
+    * numactl-devel in Red Hat/Fedora;
+
+    * libnuma-dev in Debian/Ubuntu;
+
+    .. note::
+
+        On systems with NUMA support, `libnuma-dev` (aka `numactl-devel`)
+        is a recommended dependency when `--legacy-mem` switch is used,
+        and a *required* dependency if default memory mode is used.
+        While DPDK will compile and run without `libnuma`
+        even on NUMA-enabled systems,
+        both usability and performance will be degraded.
 
 *   Python, version 2.7+ or 3.2+, to use various helper scripts included in the DPDK package.
 
+.. note::
+
+   Please ensure that the latest patches are applied to third party libraries
+   and software to avoid any known vulnerabilities.
+
 
 **Optional Tools:**
 
@@ -121,10 +112,11 @@ System Software
 
 **Required:**
 
-*   Kernel version >= 3.2
+*   Kernel version >= 3.16
 
     The kernel version required is based on the oldest long term stable kernel available
     at kernel.org when the DPDK version is in development.
+    Compatibility for recent distribution kernels will be kept, notably RHEL/CentOS 7.
 
     The kernel version in use can be checked using the command::
 
@@ -191,7 +183,7 @@ In the case of a dual-socket NUMA system,
 the number of hugepages reserved at boot time is generally divided equally between the two sockets
 (on the assumption that sufficient memory is present on both sockets).
 
-See the Documentation/kernel-parameters.txt file in your Linux source tree for further details of these and other kernel options.
+See the Documentation/admin-guide/kernel-parameters.txt file in your Linux source tree for further details of these and other kernel options.
 
 **Alternative:**
 
@@ -210,12 +202,6 @@ 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.
 
-    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
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^