From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.lore.kernel.org (Postfix) with ESMTP id B987CFD9E0A for ; Thu, 26 Feb 2026 20:14:31 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E345C402B2; Thu, 26 Feb 2026 21:14:30 +0100 (CET) Received: from mail-dy1-f182.google.com (mail-dy1-f182.google.com [74.125.82.182]) by mails.dpdk.org (Postfix) with ESMTP id 93F954026F for ; Thu, 26 Feb 2026 21:14:30 +0100 (CET) Received: by mail-dy1-f182.google.com with SMTP id 5a478bee46e88-2bdb17511aaso1239010eec.0 for ; Thu, 26 Feb 2026 12:14:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1772136869; x=1772741669; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=/UmFi9vYQ0iO4xitGYsNabXqSucn3AfGSm3FPphJims=; b=PKU2Fu4lvY5eCw/+sOWdGTCCPF85MdLtrhDRr7bkLELRFYUso8a3/gAjtY5sz90xJF +lYibBp8MLwodZV1Rr1D1YpZDc5naldAyRt3qB59Qt2Fv4XKnuNeg26/mVIgpVmtHMcO VAqezY4dn/KS+i37fdtzCY79CCr+EMcaUZ+3Fmwf3lmXEWC3787uIOWqc1mOfTJfSu+V P5pqdGP9gyODYz0N/EmMguHWMOCWxrOi8NroOMKlEiyf02jdpuKckP1nC9mRVF4Vn94N RZYbNh1JDRXuYNjl52Ew0P6ZwQAKHJu/ZmufJA8jPVsKtSNi7YnWxas6/kYg3GdOYh5X BsVg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772136869; x=1772741669; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=/UmFi9vYQ0iO4xitGYsNabXqSucn3AfGSm3FPphJims=; b=GackHXsqUmJktd5ckrf2J5SJ+rASe8siCBx5p0dKSBVfJ0n56FSLE4j6ITAYZMOapf Wlv04Y2jgN78Hi9SR8ygkp1sJTxGkEoXoz93s9daO+dV6K/6hl3RY7ipVjm8tsaOJNCq 7+SRuaZ4pyXG5Wa5Gh90lRYL7W+MP2gpwpFBcgnzmXAceymdg468ASmTtQA4skMkN9Xw ui6Yg+ukPoU89iOrITcPEEKYgnIszFzNKAlJcLHHbiwYJGvfoLfGciFMDBK72oi17TE6 ILTN7xTx/xsVWsKla320eJFI6insNxYC1mGRAZoabdXKTkEEu7vdwC3WC/94L/0PNjTu +1XA== X-Gm-Message-State: AOJu0YwCg+7ZSW1hzPd2678fzUICF/fphL9jr9CTUcruvJS92FhjtPbO 114PlwlzovCrTmtAq9sK4I9yBNyuUWrmBLLskTkEDUsmnMvPp3mk7MyCHuG22fFe6fxyIXg2br6 Kd6j1 X-Gm-Gg: ATEYQzx3NY09t5c9+2RkCyVmX4fBp+LPWprMTb7Gz4WtKgbG3kW6Yi1MUSVDzBL2SUG eLYkWBQGwF94eentnqB8biraLkjD83dvHsdDZ7tjb+hlrmSFjbs28aM6FgJxO64vuQwHHoxrxeJ ZNsjUHLxMUOXJlr60p/xOsnV5r1/MnCEn6Hz3JWlunMo9k2GedXSqKPoOdxt2e3KvfSbY8mxe+I nA5VWRO1a1qybWSCcnc5B4pTvOwJX6D05uYAYWMZ67SQVlJFomhG0Sxk2BZrmh4CULoIwZVCR3m YRJzPHXjcKpkNiZaoWRe5dTiSBaDBWwWvFonDGi93l0oxveIwpHA4mibN2Gp58YGizdcrXK16+E F7vnlHRGewnz1XgTifDwsEu5mO1z+RGqYwvpzvpkirKC+I8t2FiFRhCLGGFQQY6IBjJILA0vPm+ dHnSBEhDpTIX0ZvkubjM4W2Ck8JYnJDQf3zH+6CiuTH6vxlhNhCoGHuC6N6BKGEfU1 X-Received: by 2002:a05:7300:640c:b0:2bd:d68c:44bf with SMTP id 5a478bee46e88-2bde1c0f26bmr217169eec.5.1772136869391; Thu, 26 Feb 2026 12:14:29 -0800 (PST) Received: from phoenix.local (204-195-96-226.wavecable.com. [204.195.96.226]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2bdd1f45e23sm2456046eec.24.2026.02.26.12.14.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Feb 2026 12:14:29 -0800 (PST) Date: Thu, 26 Feb 2026 12:14:26 -0800 From: Stephen Hemminger To: Dimon Zhao Cc: dev@dpdk.org, Kyo Liu , Leon Yu , Sam Chen Subject: Re: [PATCH v3 1/1] net/nbl: add igb uio support for NBL VF devices Message-ID: <20260226121426.5f5d0e98@phoenix.local> In-Reply-To: <20260225033943.30751-2-dimon.zhao@nebula-matrix.com> References: <20260211024029.33810-1-dimon.zhao@nebula-matrix.com> <20260225033943.30751-1-dimon.zhao@nebula-matrix.com> <20260225033943.30751-2-dimon.zhao@nebula-matrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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 On Tue, 24 Feb 2026 19:39:42 -0800 Dimon Zhao wrote: > Due to a chip design limitation, only the VF > supports the igb_uio driver. The PF does not. > > The igb_uio driver requires allocating interrupts and configuring the > PCIe MSI-X table before the driver's probe function is called. > This pre-probe configuration is only possible on the VF due to the > hardware limitation; the PF can only configure the MSI-X table during > its probe process. > > Therefore, using igb_uio on the PF will fail. > This commit clarifies this restriction. > > Signed-off-by: Dimon Zhao The documentation doesn't make it clear that nbl_core is for PF and igb_uio or vfio-pci should be used for VF. Is the VF and PF sharing same ops structure? Also, there should be a entry like this now: RTE_PMD_REGISTER_KMOD_DEP(net_nbl_vf, "* igb_uio | vfio-pci");