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[209.132.180.67]) by mx.google.com with ESMTP id l6-v6si5580215plk.489.2018.03.15.17.53.11; Thu, 15 Mar 2018 17:53:25 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@codeaurora.org header.s=default header.b=Y8CSyvj8; dkim=pass header.i=@codeaurora.org header.s=default header.b=NzO1QK8c; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932973AbeCPAvG (ORCPT + 99 others); Thu, 15 Mar 2018 20:51:06 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:58096 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932227AbeCPAvE (ORCPT ); Thu, 15 Mar 2018 20:51:04 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 903CF60C5F; Fri, 16 Mar 2018 00:51:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1521161463; bh=GDZb81AXasEcr0TzYqGDUDHmGgiQZux5glAbCDM3jWs=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=Y8CSyvj8kUi/Jco/OOpZl9BOGH65v2LZ+isnrnxAvPwD3tRDRwby99mvXvZ8eo9R0 ig26AFsny9KnS2fUi4JCckWDrh71b4K/CiWvwhhmI8v0FxVgV5ZcOjxTsSrVYo1LCA jMw7ORC3xLMK5DVEMC9M7ix4HpWUgFPrqXS/Y0KQ= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_SIGNED,T_DKIM_INVALID autolearn=no autolearn_force=no version=3.4.0 Received: from [192.168.1.187] (unknown [136.56.10.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: okaya@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id AE5D860AFB; Fri, 16 Mar 2018 00:50:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1521161460; bh=GDZb81AXasEcr0TzYqGDUDHmGgiQZux5glAbCDM3jWs=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=NzO1QK8cTZugnZNBn07dsfQ/4f3S1y71eo01FxJ9NMVM6xS04jHC6anDZBx0rqgYW oXBZG6QgZ9zRmdXrN+U2AqPWSyXgeOB6WVq55mbg3d11frlQUrhZ6tkbc15JhkxOgM IUZkYSPBhmRnO0WOqU7smLgtkEPyrgM9t3FUvZas= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org AE5D860AFB Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=okaya@codeaurora.org Subject: Re: [PATCH 6/7] e1000: eliminate duplicate barriers on weakly-ordered archs To: Alexander Duyck Cc: Netdev , Timur Tabi , sulrich@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Jeff Kirsher , intel-wired-lan , LKML References: <1520997629-17361-1-git-send-email-okaya@codeaurora.org> <1520997629-17361-6-git-send-email-okaya@codeaurora.org> <39dc5bb4-02b1-bf7e-fbfc-17fc484e4fb7@codeaurora.org> From: Sinan Kaya Message-ID: <95118f6e-d406-f2b6-dc67-249dc5f648f9@codeaurora.org> Date: Thu, 15 Mar 2018 20:50:58 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/15/2018 8:25 PM, Alexander Duyck wrote: > On Thu, Mar 15, 2018 at 4:30 PM, Sinan Kaya wrote: >> On 3/14/2018 9:41 PM, Alexander Duyck wrote: >>>> } >>>> >>> So you missed the writel in e1000_xmit_frame. You should probably get >>> that one too while you are doing these updates. The wmb() is in >>> e1000_tx_queue(). >>> >> >> I brought wmb() outside along with the next descriptor assignment to be >> similar to the rest of the other code. >> >> if wmb() and writel() are not visible in the same function, let's not touch >> the code. > > Maybe for e1000 we should just skip the driver entirely. Odds are you > aren't going to have any e1000 parts running on ARM anyway since most > of them are legacy PCI or PCI-X parts that were made over 10 years > ago. Most of your efforts would probably be best spent on igb, igbvf, > ixgbe, ixgbevf, i40e, i40evf, and fm10k. > Sure. I'll drop it. -- Sinan Kaya Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.