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authorLuca Boccassi <luca.boccassi@gmail.com>2018-11-19 12:59:01 +0000
committerLuca Boccassi <luca.boccassi@gmail.com>2018-11-19 12:59:24 +0000
commit29058550643267a554e0368806dece63b047c5cb (patch)
treea6f573fe3fbc14585529b83cfcc65da2dceefbf5 /doc/guides/linux_gsg
parent8a853e3f0275efc8b05cb195085d45946942744a (diff)
New upstream version 18.11-rc4upstream/18.11-rc4
Change-Id: I861e1a2f7df210f57f44f1ad56b9ef789a4675e3 Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Diffstat (limited to 'doc/guides/linux_gsg')
-rw-r--r--doc/guides/linux_gsg/linux_drivers.rst7
-rw-r--r--doc/guides/linux_gsg/sys_reqs.rst19
2 files changed, 19 insertions, 7 deletions
diff --git a/doc/guides/linux_gsg/linux_drivers.rst b/doc/guides/linux_gsg/linux_drivers.rst
index 371a817f..8da6a31b 100644
--- a/doc/guides/linux_gsg/linux_drivers.rst
+++ b/doc/guides/linux_gsg/linux_drivers.rst
@@ -48,6 +48,13 @@ be loaded as shown below:
``vfio-pci`` kernel module rather than ``igb_uio`` or ``uio_pci_generic``.
For more details see :ref:`linux_gsg_binding_kernel` below.
+.. note::
+
+ If the devices used for DPDK are bound to the ``uio_pci_generic`` kernel module,
+ please make sure that the IOMMU is disabled or passthrough. One can add
+ ``intel_iommu=off`` or ``amd_iommu=off`` or ``intel_iommu=on iommu=pt``in GRUB
+ command line on x86_64 systems, or add ``iommu.passthrough=1`` on arm64 system.
+
Since DPDK release 1.7 onward provides VFIO support, use of UIO is optional
for platforms that support using VFIO.
diff --git a/doc/guides/linux_gsg/sys_reqs.rst b/doc/guides/linux_gsg/sys_reqs.rst
index e2230f37..29c5f47a 100644
--- a/doc/guides/linux_gsg/sys_reqs.rst
+++ b/doc/guides/linux_gsg/sys_reqs.rst
@@ -64,7 +64,11 @@ 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;
* Python, version 2.7+ or 3.2+, to use various helper scripts included in the DPDK package.
@@ -103,6 +107,13 @@ System Software
uname -r
+.. note::
+
+ Kernel version 3.2 is no longer a kernel.org longterm stable kernel.
+ For DPDK 19.02 the minimum required kernel will be updated to
+ the current kernel.org oldest longterm stable supported kernel 3.16,
+ or recent versions of common distributions, notably RHEL/CentOS 7.
+
* glibc >= 2.7 (for features related to cpuset)
The version can be checked using the ``ldd --version`` command.
@@ -183,12 +194,6 @@ 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
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^