From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 11D20A0C4B; Tue, 23 Nov 2021 08:23:46 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7449240040; Tue, 23 Nov 2021 08:23:45 +0100 (CET) Received: from mail-lj1-f172.google.com (mail-lj1-f172.google.com [209.85.208.172]) by mails.dpdk.org (Postfix) with ESMTP id 987964003C for ; Tue, 23 Nov 2021 08:23:43 +0100 (CET) Received: by mail-lj1-f172.google.com with SMTP id l7so3926259lja.2 for ; Mon, 22 Nov 2021 23:23:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=semihalf-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=tJ3jVCq+93hyHXHw12kkicn2EfK/6cFRo/Wmbm8Dzcs=; b=AhO5nR03t2szNQlkF5EmOiY4D3U/+qaWXXOJ3zbjM9lYJFQpYObMpconhsWgtqugH4 +jZd9YNFYW9zusY2RoFoOHrKOfMuKc4W89pXIt4pSun3KWir9EFnC/StdK1vFc5SB+C8 83ltmzTl20v+67WWy77c3+FXioDHZvg6+H4qI2o36vfhiSDLJY7xOwzoHydqz4rSVI2a Z4g4i7Jf+eIAZxKzDEs5/VvtcQFAL0zIv5/w8soRStH1AInOwUSRXOxbojXt646gEPdA ZO3/4XOEWd/vOzmcrsvA/xMEnzQS96ymCOOiGkZqRD5rCT+0a9QtN2A/DXIchsarvIsl bMmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=tJ3jVCq+93hyHXHw12kkicn2EfK/6cFRo/Wmbm8Dzcs=; b=0saGs/l3TPlU9sZSeFW6JsUmxroG9iupD+9rlWltebS1+Jd/2/KgZXxR8BwmfXzmDl 9q2cNVVYaFB7rjxvCU5dwRycjVeiz6MXVGIFSPRH2y2twdnxgcA+nEtEl/kS//MfVOwq d64AExhMfbg4ljPN/GN26xtxkoO+QmqWshcf3sdjs01w2FHDd5A2ANMGiUwf9BkwikSM tcfwQCAl4LidHap9BcIcI5Wx5LAWyqZGUJ2VNnZGv39gB/RxR6SJ6poAwf35FN1mV+b8 kPh9VzGmr+MSxnLfwPCfoxJWNoy8sFcia3yrrZSz3zZuZFJh4HaOdVGMGptDd4NkXAbi Ky9A== X-Gm-Message-State: AOAM53033g8v6JyXnVUqch9R3UK6pi8Syj7D3Q4XwI/EkrPVxZaRUnfE w4b5J51+jU57+NPjOr5qUdqcbXbNaUN/yQ== X-Google-Smtp-Source: ABdhPJx/rA66bzp/lOUjxheJRykCnpLKvAcU43F2RxbleMTd3DB0U1bqDqScuAm/Mn7TdBm9QYmRBA== X-Received: by 2002:a05:651c:1213:: with SMTP id i19mr2764332lja.123.1637652222780; Mon, 22 Nov 2021 23:23:42 -0800 (PST) Received: from DESKTOP-U5LNN3J.localdomain ([83.142.187.86]) by smtp.gmail.com with ESMTPSA id k14sm1392087lfu.210.2021.11.22.23.23.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Nov 2021 23:23:42 -0800 (PST) From: Michal Krawczyk To: dev@dpdk.org Cc: david.marchand@redhat.com, shaibran@amazon.com, upstream@semihalf.com, Michal Krawczyk Subject: [PATCH] doc: remove custom kernel patch link in ENA's guide Date: Tue, 23 Nov 2021 08:23:21 +0100 Message-Id: <20211123072321.1041-1-mk@semihalf.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org 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 --- doc/guides/nics/ena.rst | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/doc/guides/nics/ena.rst b/doc/guides/nics/ena.rst index 92b1858e7a..04fb5d4d75 100644 --- a/doc/guides/nics/ena.rst +++ b/doc/guides/nics/ena.rst @@ -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 `_. + If vfio-pci is used user should follow + `AWS ENA PMD documentation `_. #. Insert ``vfio-pci`` or ``igb_uio`` kernel module using the command ``modprobe vfio-pci`` or ``modprobe uio; insmod igb_uio.ko wc_activate=1`` -- 2.25.1