Received: by 2002:a05:6a10:d5a5:0:0:0:0 with SMTP id gn37csp3377030pxb; Sat, 9 Oct 2021 08:49:09 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyjO+d0v4UUzlHkOGQ8JmD9Baim2Bbw6NoC29Rl/oanYTghUChfIMeccLFIPR59Va+zu7A3 X-Received: by 2002:a17:906:584:: with SMTP id 4mr12575647ejn.56.1633794549573; Sat, 09 Oct 2021 08:49:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1633794549; cv=none; d=google.com; s=arc-20160816; b=dzb5sK7e3QYhEAzWAU9PSIRtE48a6jTbJEbkjoQ8hNegc4x685CHARGSlh1l/3eIJm fM26D6mqESRs9CDcyRFIqRFoC/YMcTJ/SNmx/Iqosyg4L++pzYAZ8iU859ipSixgKvGU n9/mi06U2rLPfKtNTx0CFBMXEC55oxXulWQ1li9NxSwS1X3sEYr5KGrQMZ3NN6/O05NE EBG7lekqw2Lnt89sd0Fdja+rtX4Py/CyRGrRF0FtWBKX+XjLRM++0ej09OvERJ9D1yYD YPrUO9QDXivDSEjSIzcCHTfJzwPqE/yBOItnIOQaBxX1WeJo8mOF8upUhG1XaSMTYENi kiCQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:in-reply-to :mime-version:user-agent:date:message-id:from:references:cc:to :subject; bh=hnYb/OnQ2m+gCHSb6LE9TqVYtC4NYyldhrY+9jfiLks=; b=su1ZlS+TJAyX+HueCNo0/YvYoVs2ju5hdMa5vHZivYuApbLNgVXC0FUpW+x8IObYpx uv8Z3PHHVIDTX5xI7Jgdngb08qIUhWMD3w58ksRpUp40JlPPVv53ALBGq3f2nUIqpY/o PfssHsjH6cuXY8g/LGDSDgrjnGlG1TisGoJuE70HshgzExJX1jAE5tTUPlFSjcZDuH/C fucrSitmbOIZdjL/XHPrg47UdPYnwXt642JyECPbEPGYAiYrW4HNDjcbOM6u6RKf/At1 BGT0adCO9OB76QbJNmIu6wulAjoabzgxXtANvyU+goDSfLPU2gixq7AYybFrGdXS/NLl ws+g== 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=alibaba.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id h19si3878529ejt.292.2021.10.09.08.48.45; Sat, 09 Oct 2021 08:49:09 -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=alibaba.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234695AbhJIPrY (ORCPT + 99 others); Sat, 9 Oct 2021 11:47:24 -0400 Received: from out30-54.freemail.mail.aliyun.com ([115.124.30.54]:41758 "EHLO out30-54.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234428AbhJIPrX (ORCPT ); Sat, 9 Oct 2021 11:47:23 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R281e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04426;MF=xianting.tian@linux.alibaba.com;NM=1;PH=DS;RN=9;SR=0;TI=SMTPD_---0Ur98u8A_1633794323; Received: from 192.168.0.104(mailfrom:xianting.tian@linux.alibaba.com fp:SMTPD_---0Ur98u8A_1633794323) by smtp.aliyun-inc.com(127.0.0.1); Sat, 09 Oct 2021 23:45:24 +0800 Subject: Re: [PATCH v10 2/3] tty: hvc: pass DMA capable memory to put_chars() To: Greg KH Cc: jirislaby@kernel.org, amit@kernel.org, arnd@arndb.de, osandov@fb.com, shile.zhang@linux.alibaba.com, linuxppc-dev@lists.ozlabs.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org References: <20211009114829.1071021-1-xianting.tian@linux.alibaba.com> <20211009114829.1071021-3-xianting.tian@linux.alibaba.com> From: Xianting Tian Message-ID: <3516c58c-e8e6-2e5a-2bc8-ad80e2124d37@linux.alibaba.com> Date: Sat, 9 Oct 2021 23:45:23 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 在 2021/10/9 下午7:58, Greg KH 写道: > Did you look at the placement using pahole as to how this structure now > looks? thanks for all your commnts. for this one, do you mean I need to remove the blank line?  thanks