Received: by 2002:a05:6902:102b:0:0:0:0 with SMTP id x11csp3061206ybt; Mon, 29 Jun 2020 14:15:08 -0700 (PDT) X-Google-Smtp-Source: ABdhPJx8gTkN2TX9bwVG2qpuHdgE1DLUNrzNiw7k0wWfeKiDbb+Y8NAzf8q6auGdbkjmwgbENiRL X-Received: by 2002:a17:906:fac3:: with SMTP id lu3mr7909894ejb.374.1593465308461; Mon, 29 Jun 2020 14:15:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1593465308; cv=none; d=google.com; s=arc-20160816; b=mOvK3eiCDjv4z3Vl96YNvY8GeGHim2A5KcQSqbOwbNwEy26IZK3KG0PNFBIGhNY42c 0JcvYvJnawkwiWv5chnXnpHjaAaZ7q5Y47yHSwWCVe0rYuDkYApIvcVl+lSJ+vYTn5fj sZVGqmMOTDH5vT5amMdPwaidpswOz5yc4PuIS5YjruI+BFI+zWG0B4o1vreEGf3ojYY8 PS2K/Uv6WdbChufWaJq+gKxmcT1BPNScj0IMXEMU4aUi4wPysod4ANfLGv+lgRmS+6qe KLc3BDv1C3m+X3esUc/B/86sROESAXnANySX6pARILgmjmPsTfKUP7Ey7RLQVjkfZSx0 ruSw== 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; bh=e5hGBks5H1jfWnoUfRHuC8WAbImixcDRSk8hApinRhg=; b=GV3lH2Drfj6FzxQsFDKBR7I4JDaxhGuBmEsR7s0Zk9JSf+PpbW4tCWlVkMNVaf/UbX 27Ict4xRyxKeusXtY2s8sFpMvf6LZu+RYI3DXOsN8G4HCERv9nPUFqyvSP9f79EXiDhk 0GL4sSyvxwUJH61cYYI7YyS64PH/grB1LCIinqpL+lBrD88BzxOUSxP7q6C1YpD1yCza LdfTb/8X4EPH5PTkHAy/m9SNKDNeFaMOZVleclcCT4GeHmyBm474O7DxQQ9eKvBBKT1i 7KCF8I2FyOdqeNMXSjNiBU1/6zAUuR1U4ZUd8goc+GDEhUlT/Sv8eBELLUQLiLqFGt7C MHzQ== 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id bh6si422529ejb.325.2020.06.29.14.14.45; Mon, 29 Jun 2020 14:15:08 -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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390395AbgF2VNZ (ORCPT + 99 others); Mon, 29 Jun 2020 17:13:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40896 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730123AbgF2S5n (ORCPT ); Mon, 29 Jun 2020 14:57:43 -0400 Received: from www62.your-server.de (www62.your-server.de [IPv6:2a01:4f8:d0a:276a::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D088C030787; Mon, 29 Jun 2020 08:18:51 -0700 (PDT) Received: from sslproxy06.your-server.de ([78.46.172.3]) by www62.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89_1) (envelope-from ) id 1jpvYN-0003Oq-V0; Mon, 29 Jun 2020 17:18:39 +0200 Received: from [178.196.57.75] (helo=pc-9.home) by sslproxy06.your-server.de with esmtpsa (TLSv1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jpvYN-000POt-Hi; Mon, 29 Jun 2020 17:18:39 +0200 Subject: Re: [PATCH net] xsk: remove cheap_dma optimization To: =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , 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> <81aec200-c1a0-6d57-e3b6-26dad30790b8@intel.com> From: Daniel Borkmann Message-ID: <903c646c-dc74-a15c-eb33-e1b67bc7da0d@iogearbox.net> Date: Mon, 29 Jun 2020 17:18:38 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <81aec200-c1a0-6d57-e3b6-26dad30790b8@intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Authenticated-Sender: daniel@iogearbox.net X-Virus-Scanned: Clear (ClamAV 0.102.3/25858/Mon Jun 29 15:30:49 2020) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 6/29/20 5:10 PM, Björn Töpel wrote: > 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! Nice, tossed from bpf tree then! (Looks like it didn't land on the bpf list yet, but seems other mails are currently stuck as well on vger. I presume it will be routed to Linus via Christoph?) Thanks, Daniel