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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 1E031C433E0 for ; Fri, 19 Feb 2021 08:55:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ABB0A64E67 for ; Fri, 19 Feb 2021 08:55:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229774AbhBSIzV (ORCPT ); Fri, 19 Feb 2021 03:55:21 -0500 Received: from szxga06-in.huawei.com ([45.249.212.32]:12928 "EHLO szxga06-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229535AbhBSIzR (ORCPT ); Fri, 19 Feb 2021 03:55:17 -0500 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4DhljB2ByCzjNVp; Fri, 19 Feb 2021 16:53:18 +0800 (CST) Received: from [10.174.178.147] (10.174.178.147) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.498.0; Fri, 19 Feb 2021 16:54:24 +0800 Subject: Re: 5.10 LTS Kernel: 2 or 6 years? To: Greg Kroah-Hartman , Scott Branden CC: BCM Kernel Feedback , LKML , Linux ARM , PEIXIN HOU , Yanjin , "Zhangdianfang (Dianfang, OS Lab)" , Zhaohongjiang , Huxinwei References: From: Hanjun Guo Message-ID: <595affb4-36e8-0a63-ebb3-a4fd0e3c243a@huawei.com> Date: Fri, 19 Feb 2021 16:54:24 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.178.147] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Greg, On 2021/1/26 15:29, Greg Kroah-Hartman wrote: [...] > > I want to see companies _using_ the kernel, and most importantly, > _updating_ their devices with it, to know if it is worth to keep around > for longer than 2 years. I also, hopefully, want to see how those > companies will help me out in the testing and maintenance of that kernel > version in order to make supporting it for 6 years actually possible. > > So, are you planning on using 5.10? Will you will be willing to help > out in testing the -rc releases I make to let me know if there are any > problems, and to help in pointing out and backporting any specific > patches that your platforms need for that kernel release? We(Huawei) are willing to commit resources to help out in testing the stable -rc releases, and to help to backport patches for stable kernels. 5.10 stable kernel will be used for openEuler [1] kernel and also inside Huawei. From customer's feedback, it's very important to see the stable kernel we used to be maintained for 6 years in the community, and we will use 5.10 kernel for at least 6 years, so we are willing to help you and help ourselves :) In specific, we will start from the testing work, using HULK robot (reports lots of bugs to mainline kernel) testing framework to test compile, reboot, functional testing, and will extend to basic performance regression testing in the future. And we will start from ARM64 and X86 architecture first, and then extend to other platforms. For patch backporting, will send the bugfix patches (from mainline) we spotted, but I think this work may not doing in regular but will be triggered as needed. Does this sound good to you? Thanks Hanjun [1]: https://openeuler.org/en/