diff options
Diffstat (limited to 'doc/guides/linux_gsg/linux_drivers.rst')
| -rw-r--r-- | doc/guides/linux_gsg/linux_drivers.rst | 7 |
1 files changed, 7 insertions, 0 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. |