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=-5.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 3DE30C433DB for ; Thu, 7 Jan 2021 22:57:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03157235FA for ; Thu, 7 Jan 2021 22:57:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726989AbhAGW5a (ORCPT ); Thu, 7 Jan 2021 17:57:30 -0500 Received: from www262.sakura.ne.jp ([202.181.97.72]:61944 "EHLO www262.sakura.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725944AbhAGW5a (ORCPT ); Thu, 7 Jan 2021 17:57:30 -0500 Received: from fsav303.sakura.ne.jp (fsav303.sakura.ne.jp [153.120.85.134]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id 107Mumtu091038; Fri, 8 Jan 2021 07:56:48 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Received: from www262.sakura.ne.jp (202.181.97.72) by fsav303.sakura.ne.jp (F-Secure/fsigk_smtp/550/fsav303.sakura.ne.jp); Fri, 08 Jan 2021 07:56:48 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/fsav303.sakura.ne.jp) Received: from [192.168.1.9] (M106072142033.v4.enabler.ne.jp [106.72.142.33]) (authenticated bits=0) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTPSA id 107MumS6091031 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NO); Fri, 8 Jan 2021 07:56:48 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Subject: Re: [Patch] fbcon: i want fbcon soft scrollback feature come back To: xuhuijie , gregkh@linuxfoundation.org, daniel.vetter@ffwll.ch, jirislaby@kernel.org, yepeilin.cs@gmail.com, b.zolnierkie@samsung.com, george.kennedy@oracle.com, natechancellor@gmail.com Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org References: <20210107154801.1997-1-huijiexu295@gmail.com> From: Tetsuo Handa Message-ID: <0994b84e-4370-1065-c0ed-87c8b946a741@i-love.sakura.ne.jp> Date: Fri, 8 Jan 2021 07:56:45 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <20210107154801.1997-1-huijiexu295@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org On 2021/01/08 0:48, xuhuijie wrote: > This commit 50145474f6ef(fbcon: remove soft scrollback code) remove soft scrollback in > fbcon. So the shift+PageDown and shift+PageUp is missing. But PageUp is a vary important > feature when system panic or reset. I can get log by PageUp before, but now there is no > way to get. Especially on the server system, we always use bmc to control computer. > So I hope the community can add this feature back. > You can configure kdump for panic, and netconsole for reset. (I don't know whether PageUp key works after panic...)