doc: remove custom kernel patch link in ENA's guide
PATCH 1/1 doc: remove custom kernel patch link in ENA's guide
ENAv2 device requires write combining support which isn't supported by the upstream vfio-pci. amzn-driver repository provided non-upstream patch to enable this feature and it was linked directly by the ENA PMD guide.
To avoid custom kernel patch linking, the user is now guided to the AWS ENA PMD documentation, which describes vfio-pci and ENAv2 issue more deeply with possible workarounds on how to resolve it.
--- doc/guides/nics/ena.rst | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
doc/guides/nics/ena.rst +2 -3
@@ -158,9 +158,8 @@ Prerequisites In DPDK ``igb_uio`` it must be enabled by loading module with ``wc_activate=1`` flag (example below). However, mainline's vfio-pci driver in kernel doesn't have WC support yet (planed to be added). - If vfio-pci used user should be either turn off ENAv2 (to avoid performance - impact) or recompile vfio-pci driver with patch provided in - `amzn-github <https://github.com/amzn/amzn-drivers/tree/master/userspace/dpdk/enav2-vfio-patch>`_. + If vfio-pci is used user should follow + `AWS ENA PMD documentation <https://github.com/amzn/amzn-drivers/tree/master/userspace/dpdk/README.md>`_. #. Insert ``vfio-pci`` or ``igb_uio`` kernel module using the command ``modprobe vfio-pci`` or ``modprobe uio; insmod igb_uio.ko wc_activate=1``
Signature · 1 line
2.25.1
Quoted 10 lines · Michal Krawczyk
ENAv2 device requires write combining support which isn't supported by the upstream vfio-pci. amzn-driver repository provided non-upstream patch to enable this feature and it was linked directly by the ENA PMD guide.
To avoid custom kernel patch linking, the user is now guided to the AWS ENA PMD documentation, which describes vfio-pci and ENAv2 issue more deeply with possible workarounds on how to resolve it.
Signed-off-by Michal Krawczyk <[email protected]>
Applied to dpdk-next-net/main, thanks.