Received: by 2002:a05:6902:102b:0:0:0:0 with SMTP id x11csp2992974ybt; Mon, 29 Jun 2020 12:19:50 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwWvv6LtzkUEkSf/9Bk8sV6nqVPU4tzOENw6wBCfLOZTBRjRTLzKKfHt0wWl5ZmKJJfZAfo X-Received: by 2002:a17:906:c142:: with SMTP id dp2mr15990881ejc.541.1593458390649; Mon, 29 Jun 2020 12:19:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1593458390; cv=none; d=google.com; s=arc-20160816; b=V6mGtuZnr/qeS3jdqUNnXRmtmxcUBUlEkpfUeJVLcf++WbQZJxnwkKMaqIkGay0+S7 5BMsxWy1YJ7jeP4Kb/OMEHwmeWZbVxxVlQRnUEOeknCCcnjrPMO0LcXxoBX8NHlAIiEp cisrwj3yZHU+rIZm6/n0xM669axm4SJQZkBWE3ivOULU8GZfoOVeu5oceq4WBGUQSeKf rTIjrwScTYif1OhUNdyfQzaGmCkj+XXyxoI8/tklSKt3xvFx8rafHMmmg9uhkgZC+GUZ tayc1NpCs8jF6Sa2wvs9F6tHQobTjXojHb3SX1qmB6hXqI43Fnw4YxTAL//2Ggj6F3V0 R3nA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject:ironport-sdr:ironport-sdr; bh=47Q7IMDhSMvjmTn3FXAQwgyQ8sHdPog6z1TPrBepdW0=; b=VnTxYpRkkmNClVEZPsBHnbXjK7LbOvIe7j0bx5p4EteIGuWiMI3McpRKtC9WUprGCp lcoKkkJQbWEEOkHZAp8b5DapAW4hFC467135FW5UIXVYMV0g8Jwh7Plo03K+hsaBm/Br SRAY+y2kn/S7oaEIZSZNd2qQRU1PMDcCl+/wx/xuLOEwKUUmSqyWLNeXewEdQHRsSIT+ vV95fL9o1fk+7xp+DaSMakaMcMagJ7jibBsXGX/D8FNbDrQJUo1FzIh/iGTcGjWN7Wbj S6t0Yum5ypLJXUIYxXKTG7kl8NNOZjGrxfNlp3eKJgnrBHnPRXvhvTRNgT01VRwVqln4 JRUw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id d19si282908edv.53.2020.06.29.12.19.27; Mon, 29 Jun 2020 12:19:50 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731893AbgF2TQz (ORCPT + 99 others); Mon, 29 Jun 2020 15:16:55 -0400 Received: from mga01.intel.com ([192.55.52.88]:63720 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731807AbgF2TQw (ORCPT ); Mon, 29 Jun 2020 15:16:52 -0400 IronPort-SDR: /awpK8vauA1UY5MpEZ/YTnuYaQaZ4sDgei+W1TMRpYQL7dQwcjJ2isBadoMAnfC5R01SflKf/7 LdcjrdMZm54Q== X-IronPort-AV: E=McAfee;i="6000,8403,9666"; a="163998934" X-IronPort-AV: E=Sophos;i="5.75,295,1589266800"; d="scan'208";a="163998934" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jun 2020 08:10:46 -0700 IronPort-SDR: mw6GdldLIMHUg1p42ZqiigUai0KEvZPO4JmOhxUKKwkLU1eWIPjoi4leEGe+trp6TiAwM03dva 0x/VdwNad0nA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,295,1589266800"; d="scan'208";a="313073307" Received: from unknown (HELO btopel-mobl.ger.intel.com) ([10.252.54.90]) by fmsmga002.fm.intel.com with ESMTP; 29 Jun 2020 08:10:43 -0700 Subject: Re: [PATCH net] xsk: remove cheap_dma optimization To: Daniel Borkmann , Christoph Hellwig Cc: =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , netdev@vger.kernel.org, davem@davemloft.net, konrad.wilk@oracle.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, maximmi@mellanox.com, magnus.karlsson@intel.com, jonathan.lemon@gmail.com References: <20200626134358.90122-1-bjorn.topel@gmail.com> <20200627070406.GB11854@lst.de> <88d27e1b-dbda-301c-64ba-2391092e3236@intel.com> From: =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= Message-ID: <81aec200-c1a0-6d57-e3b6-26dad30790b8@intel.com> Date: Mon, 29 Jun 2020 17:10:42 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020-06-29 15:52, Daniel Borkmann wrote: > > Ok, fair enough, please work with DMA folks to get this properly > integrated and > restored then. Applied, thanks! Daniel, you were too quick! Please revert this one; Christoph just submitted a 4-patch-series that addresses both the DMA API, and the perf regression! Björn