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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 89A8CCA9EC7 for ; Sat, 2 Nov 2019 17:54:47 +0000 (UTC) Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 462FF21726 for ; Sat, 2 Nov 2019 17:54:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 462FF21726 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=vt.edu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernelnewbies-bounces@kernelnewbies.org Received: from localhost ([::1] helo=shelob.surriel.com) by shelob.surriel.com with esmtp (Exim 4.92.3) (envelope-from ) id 1iQxba-0004dO-KO; Sat, 02 Nov 2019 13:54:30 -0400 Received: from omr1.cc.ipv6.vt.edu ([2607:b400:92:8300:0:c6:2117:b0e] helo=omr1.cc.vt.edu) by shelob.surriel.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92.3) (envelope-from ) id 1iQxbY-0004dG-91 for kernelnewbies@kernelnewbies.org; Sat, 02 Nov 2019 13:54:28 -0400 Received: from mr2.cc.vt.edu (mr2.cc.vt.edu [IPv6:2607:b400:92:8400:0:90:e077:bf22]) by omr1.cc.vt.edu (8.14.4/8.14.4) with ESMTP id xA2HsQOH006142 for ; Sat, 2 Nov 2019 13:54:27 -0400 Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) by mr2.cc.vt.edu (8.14.7/8.14.7) with ESMTP id xA2HsLMr024913 for ; Sat, 2 Nov 2019 13:54:26 -0400 Received: by mail-qk1-f198.google.com with SMTP id 22so8711700qka.23 for ; Sat, 02 Nov 2019 10:54:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:in-reply-to:references :mime-version:content-transfer-encoding:date:message-id; bh=vtkLxs9kuZD24/mNSBeVciwzKUvZ2mSnWk17BXmrdjk=; b=MHlmv+vScB7FQnjIPx2oc1OMKT+iRuoX/6tUKARCHlrKtpjoDWiSGK32gW74g8615v 6+xhTiybb5M9FZBMdcTKy/SeLlRR4u3xDCp2rEBf3/+peXwvENF9EDjyO7IxeQV+8uy5 xavLNTGLJywchODndGWSVDkULMDhoUGVBAswe37b8v416NNrHcilTYt+BP4a1tFVtKz5 qxmWo6lI/fiLv94E76mQWkOUDyleGxdTYjrqhFCLGGzHVaULsd2qwyrCcy2FLBzlzHQS nNDx7pO0r7pr/mEZgr8dgru//FBZoBo+92uY3CKviHV/rtTrex+GOB2HL6tZGjo5o0qv xFsg== X-Gm-Message-State: APjAAAXkpxk3Fn7tKLeecynklNeWPpTmWr2j97YCVHcf9r6dxjOXbla5 oz3m8DkRnwsVBic9gnYxrAM8BmsxN4yvyG19PzFMAxInl3lbKa7H3M7TSSWN85VhE7Qn0gCZWot 96VcSVPCcjy/EB+EbnF1MzOu1wbdUKZWjoPbuRdI= X-Received: by 2002:a37:4e41:: with SMTP id c62mr8209879qkb.215.1572717261545; Sat, 02 Nov 2019 10:54:21 -0700 (PDT) X-Google-Smtp-Source: APXvYqx4P5O6qmWp/wYKhLoy49qIU4V+UFYMd/8oWRvnE6aWwAu/o09WCcEob5UM+ktA5l2Hs6nq4w== X-Received: by 2002:a37:4e41:: with SMTP id c62mr8209814qkb.215.1572717260210; Sat, 02 Nov 2019 10:54:20 -0700 (PDT) Received: from turing-police ([2601:5c0:c001:c9e1::359]) by smtp.gmail.com with ESMTPSA id d139sm7060421qkb.36.2019.11.02.10.54.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 Nov 2019 10:54:18 -0700 (PDT) From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" X-Google-Original-From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" X-Mailer: exmh version 2.9.0 11/07/2018 with nmh-1.7+dev To: Avinash Patil Subject: Re: Linux stable: 4.19 vs 4.14 In-Reply-To: References: Mime-Version: 1.0 Date: Sat, 02 Nov 2019 13:54:17 -0400 Message-ID: <17709.1572717257@turing-police> Cc: kernelnewbies X-BeenThere: kernelnewbies@kernelnewbies.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1040518024192156467==" Errors-To: kernelnewbies-bounces@kernelnewbies.org --===============1040518024192156467== Content-Type: multipart/signed; boundary="==_Exmh_1572717257_14215P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit --==_Exmh_1572717257_14215P Content-Type: text/plain; charset=us-ascii On Fri, 01 Nov 2019 14:24:26 -0700, Avinash Patil said: > Hi Greg, I'm not Greg, but... :) > I am curious as to why Linux4.19 which was released later has earlier > EOL than 4.14? Not all stable releases are kept going for the same amount of time. Most go EOL as soon as a few newer releases have come out, while every 5th one or so is kept going for longer. > If we have to choose one version over another for BSP, which one is preferred? If you're planning to dump unsupported crap on customers, it doesn't matter. Let's face it - if you're not going to provide updates, when a stable stream EOLs doesn't matter if you ship 4.19.81 or 4.14.151, because your customers aren't ever going to get 4.19.104 or 4.14.183. But you probably want to base the BSP on 4.19 so that your customers get the benefit of all the stuff that got fixed between 4.14 and 4.19. Remember that only a *very* small fraction of fixes - those that qualify under Documentation/process/stable-kernel-rules.rst get included in the stable tree. And of course, unless you have no intention of building similar boards in the future, it's a good idea to upstream any custom drivers. That way, when your follow-on BSP gets based to the 5.11 kernel, your drivers are already in-tree, and even more importantly, already updated to any 5.11 kernel API changes, because anybody who changed a kernel API was required to update your driver for you. (And no, "We only plan to sell 50,000 so it's not worth it" is not a valid excuse. There's plenty of stuff that's in-tree that's very niche with only a few users. Heck, we kept an entire architecture (the i386 Voyager) around for 2 machines. Not two models, two physical machines. We finally dropped it when James Bottomley was unable to mix-and-match parts from the two machines to get either one to boot....) --==_Exmh_1572717257_14215P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Comment: Exmh version 2.9.0 11/07/2018 iQIVAwUBXb3CyAdmEQWDXROgAQK/MA//dp7cSx7MAGfXF/VbWj/GJfcWzOuzcOTR nPMkyhx7F1jzqkwsIC2gKcFoWcUhRcgiFOOs6EACiAseJY2TObzOXCbOn0HNHG+6 pyIwL0clO8iYzRckwJkqiZC6Zl0BA7JpCOMvEU/uFwUxvfOztm4PNZwNRuk9kr1X TvVOMemNax3tJtF18qw/Xf5yHxdZZFrQOJcNPkXR4c9VvBGvnClxVVOK4DrUehu9 uTJ+wFA+5l5qPrFG94INx7of0qZc9rHMcy2VSHKkYn7LYU82lZxtM5B3ZFPNu5+g w97E1AvpJVYD72ZOpyFnkuy0Vi07lAhtGSfcSGGLytnR484pJ1E5LkwO8aJOxhMK Jf+xtG7ePN60y3A5gMMQQaBRTRf1qndc/ielgT0fA5tj3e8By7fkGoLabvtX3+WR KsfSA9778RY2kJqJVKYzcqeTth0kviSGt1HmZuYobnJKY4SN2yOeKKZrACCdrc5k uScJWplZnrufJuR4SrSdmcwf9d9lHsRcjFfMG0iVp051PepB8g1D2u8WIA8XJK3I w5nE0wlbxKUgdxBJuqXC6KgMTarsiiIem5/e5LwGN3ruq0BXacuD9M8oppNcKTIh BLv7XHs7p1Voyyrh3IT6ThZ1tAss6H+iTdGzBBqxffIytVY+XCvutkxMQAdLOqVU cXix+aMnsVg= =LvhA -----END PGP SIGNATURE----- --==_Exmh_1572717257_14215P-- --===============1040518024192156467== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies --===============1040518024192156467==--