[dpdk-dev] [PATCH] doc: update for ENA supported drivers

Rafał Kozik rk at semihalf.com
Wed Oct 10 14:04:17 CEST 2018


Hello Ferruh,

> Unless installed "igb_uio" won't be available to use with "modprobe", not sure
> about adding that detail, what do you think?

I did not add it. In current version this information is already present:
> -#. Bind the intended ENA device to igb_uio module


> This is only required if there is no iommu on the system, right? Won't ena will
> work without this parameter on the system that has iommu?

I will prepare next version, that will clarify it.

Best regards,
Rafal

wt., 9 paź 2018 o 12:56 Ferruh Yigit <ferruh.yigit at intel.com> napisał(a):
>
> On 10/5/2018 10:02 AM, Rafal Kozik wrote:
> > Add instruction how to bind ENA to VFIO-PCI driver.
> >
> > Fixes: cf8a122c296a ("ena: introduce documentation")
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Zorik Machulsky <zorik at amazon.com>
> > Signed-off-by: Rafal Kozik <rk at semihalf.com>
> > Acked-by: Michal Krawczyk <mk at semihalf.com>
> > ---
> >  doc/guides/nics/ena.rst          | 12 +++++++++---
> >  doc/guides/nics/features/ena.ini |  1 +
> >  2 files changed, 10 insertions(+), 3 deletions(-)
> >
> > diff --git a/doc/guides/nics/ena.rst b/doc/guides/nics/ena.rst
> > index d19912e..0dfefc6 100644
> > --- a/doc/guides/nics/ena.rst
> > +++ b/doc/guides/nics/ena.rst
> > @@ -187,11 +187,17 @@ Prerequisites
> >  -------------
> >
> >  #. Prepare the system as recommended by DPDK suite.  This includes environment
> > -   variables, hugepages configuration, tool-chains and configuration
> > +   variables, hugepages configuration, tool-chains and configuration.
> >
> > -#. Insert igb_uio kernel module using the command 'modprobe igb_uio'
> > +#. ENA PMD can operate with vfio-pci or igb_uio driver.
> >
> > -#. Bind the intended ENA device to igb_uio module
> > +#. Insert vfio-pci or igb_uio kernel module using the command
> > +   'modprobe vfio-pci' or 'modprobe igb_uio' respectively.
>
> Unless installed "igb_uio" won't be available to use with "modprobe", not sure
> about adding that detail, what do you think?
>
> > +
> > +#. If vfio-pci driver is used please make sure noiommu mode is enabled:
> > +   echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
>
> This is only required if there is no iommu on the system, right? Won't ena will
> work without this parameter on the system that has iommu?
>
> > +
> > +#. Bind the intended ENA device to vfio-pci or igb_uio module.
> >
> >
> >  At this point the system should be ready to run DPDK applications. Once the
> > diff --git a/doc/guides/nics/features/ena.ini b/doc/guides/nics/features/ena.ini
> > index 691c1e3..aa6f05a 100644
> > --- a/doc/guides/nics/features/ena.ini
> > +++ b/doc/guides/nics/features/ena.ini
> > @@ -23,5 +23,6 @@ Inner L4 checksum    = Y
> >  Basic stats          = Y
> >  Extended stats       = Y
> >  Linux UIO            = Y
> > +Linux VFIO           = Y
> >  x86-32               = Y
> >  x86-64               = Y
> >
>


More information about the dev mailing list