[dpdk-dev] [PATCH 2/2] doc/guides: Add hugepage reserve instructions for IBM POWER

[Chao Zhu]

This patch adds additional instructions for hugepage reservation on IBM
POWER.

Signed-off-by: Chao Zhu <chaozhu at linux.vnet.ibm.com>
---
 doc/guides/linux_gsg/sys_reqs.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/guides/linux_gsg/sys_reqs.rst b/doc/guides/linux_gsg/sys_reqs.rst
index 61222c6..3a28c9e 100644
--- a/doc/guides/linux_gsg/sys_reqs.rst
+++ b/doc/guides/linux_gsg/sys_reqs.rst
@@ -200,6 +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.
 
+    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
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-- 
1.8.3.1