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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 A42E2C433E1 for ; Mon, 29 Jun 2020 19:17:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 88F7C206E2 for ; Mon, 29 Jun 2020 19:17:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731902AbgF2TQz (ORCPT ); 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