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 X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 77736C433E0 for ; Mon, 25 Jan 2021 20:07:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38A12224F9 for ; Mon, 25 Jan 2021 20:07:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731995AbhAYUHq (ORCPT ); Mon, 25 Jan 2021 15:07:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731750AbhAYUHP (ORCPT ); Mon, 25 Jan 2021 15:07:15 -0500 Received: from mail-lj1-x22c.google.com (mail-lj1-x22c.google.com [IPv6:2a00:1450:4864:20::22c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ECE6BC061756 for ; Mon, 25 Jan 2021 12:06:34 -0800 (PST) Received: by mail-lj1-x22c.google.com with SMTP id f17so16867209ljg.12 for ; Mon, 25 Jan 2021 12:06:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=qCPUBn3dooDh60iY+A4R0Iw7YKtJwYG+B1RZaDnLuXU=; b=B4lyPxKxHJ+h03UTTOHunLBQd6bBM4FVjqlWC7TR+lcQhrKcNzG6M0wUDR3zBoy3hC zO1yTud5eVGnP4dhbhZVVoXduxI+nxvx6we0NXucgVdfbuJ3x0/9D9vEI3iOSjfpLu3u f7XXwZpor11kPKjjNjGFyd5ptqoNO/f05zgus= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=qCPUBn3dooDh60iY+A4R0Iw7YKtJwYG+B1RZaDnLuXU=; b=b2pIkwDFJkQAg1OvzRe3GXBk/+pX2Usll4MDIsDqUgQxjUS4+2EYsK2FRLS7Zux9Cg dV6OZ7yU9Xf9zYJZzNnyFZ/ArxHnUIkYAnk+f6ufQdAy51FVxK2UlCo7Gnx5rFmNFAFe CVOAYIEH+uoK/Sc85V6C0FUjRtvXJJrJQFVIwkd9kqGOmk3EBxz+hdf/H1u87MmLcIHe SGljs54bUiDqSYKXOb8VHlsbYyddQJrBOZQj18JSRcWUEHVlc1VzA7VxvWkmnRUk8Uei jG6gU/R4z1cxwH6i7hYMHXA86nNWQPk6zLkfc1EpQ5tALqqBTIDp9IjKyOT9NmYh5yGe py5Q== X-Gm-Message-State: AOAM530s4jdoLT9+a1apA51MCZunlgAkwaJiwuuBTa7J1KiIPHm6yOV0 K6l9B7aeAEf4sVF3igbfoHhm3oI1Wu/zhyHXVFyvXQ== X-Google-Smtp-Source: ABdhPJx3vaKBLLUu1xmkfQKlh25z24F1QD88Vxb6T2GWh1ZIOImFG0qKaqEniNDhx1QEIsNr8e5yggAinCZ/xj7yMNA= X-Received: by 2002:a2e:9192:: with SMTP id f18mr998356ljg.487.1611605193289; Mon, 25 Jan 2021 12:06:33 -0800 (PST) MIME-Version: 1.0 References: <20210122193658.282884-1-saeed@kernel.org> <20210125132210.GJ4147@nvidia.com> <20210125194941.GZ4147@nvidia.com> In-Reply-To: <20210125194941.GZ4147@nvidia.com> From: Edwin Peer Date: Mon, 25 Jan 2021 12:05:57 -0800 Message-ID: Subject: Re: [pull request][net-next V10 00/14] Add mlx5 subfunction support To: Jason Gunthorpe Cc: Parav Pandit , Saeed Mahameed , "David S. Miller" , Jakub Kicinski , netdev , "linux-rdma@vger.kernel.org" , Alexander Duyck , Sridhar Samudrala , David Ahern , Kiran Patil , Jacob Keller , "Ertman, David M" , Dan Williams , Saeed Mahameed Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000014841d05b9bf1330" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org --00000000000014841d05b9bf1330 Content-Type: text/plain; charset="UTF-8" On Mon, Jan 25, 2021 at 11:49 AM Jason Gunthorpe wrote: > I've never seen someone implement a NumVF > 256 by co-opting the bus > number. Usually the VF offset already places the VF routing IDs into a different bus number range from the PF. That much at least works today. > Can Linux even assign more bus numbers to a port without firmware > help? Bus numbers are something that requires the root complex to be > aware of to setup routability. I'm not sure, presumably something already infers this for the first additional bus number based on the SR-IOV config capability? 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