From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 3B16D1382C5 for ; Thu, 18 Jun 2020 19:36:10 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 5067DE08D1; Thu, 18 Jun 2020 19:36:02 +0000 (UTC) Received: from sonic306-20.consmr.mail.gq1.yahoo.com (sonic306-20.consmr.mail.gq1.yahoo.com [98.137.68.83]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id BF60CE08BF for ; Thu, 18 Jun 2020 19:36:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=verizon.net; s=a2048; t=1592508959; bh=4ws3cqMdCUnX8dXMUQXJGz8o+VV/6CQ/0Y3T3JFTdUw=; h=Subject:To:References:From:Date:In-Reply-To:From:Subject; b=eP/K9XkwFhfH5Jklpk0YtoVw5E5AlRhS2LKjXrmCa5mZw/U2TROqpYxa+nDDg/ti81K9eDx8ytPktpwTr/EOmcyRbhxAbpn/T3vo8tABilOCA/igRZu2FmmCN78PktCxHI/obA5yhuu1x1KzRiAEsv/fjYEJaT+11FVkn03up+aePtwGuHRcZL/rhERRaa1Ty7Nah7911RwX996dHM8Yj1oTHvqOivkKvzaaIUx2hiu6D564Ub9jhyOcbS1D/uak/2uoxyeI1HTCqSyahWXfFr8lJHoNX29vRP7/2pV3m6Y9JUO/MHPZPFgHpdAecf3DOCis/AaxkvF8/506Fo6RLQ== X-YMail-OSG: kKhnOeMVM1nXQxJf5743yadhVpF6od0qsfdtalARLmJytE3Gke7CUUgSQQFiQ.0 DHeeKjIK9IQCmVtQB.GEnxRELB16AQesxhfdgTmQt.XoYVofkYXDc4XTDTEj7WWAZAEppVkyiaF. ek6MEZREnBpO9RV1ti8lCcMT7mNUEWz2bg6UyTnIQ5KDcWvOChcTmHC.kDhWxU9BKjID_UlBci50 2AdG.UlEn0P.zLouib1NwBuw0ZbcNrcuNch8ybnsyCVTw0e0gVAE8SzzJQQejWdGwdc0ACOikqXr sygJfbFQ_UuMdwl_8VXhVhye4emDRfXmUU_U7rJ8jk97kS0_h85vaKn2Nbgnvt1.sicOVD7SpSsq K3Kkte8Zas_Trzg3gV6GwWWZfPsW8CHZ8DQubW4e.4F94wi9RV6tMEa2GtO7L5AzTfW9gh5M6tr7 g8kALPXqCp7Hc1ELdSDR.M4BImKcOxQI8wqjqkkI102q.rPgVAKr3Tjq2eeOfc9S3tcgk9m7puPp DbyXsIu67w28DNL4fMGQF_Fz7zvXX9CX3ZCdhhTSvnlpd88NNeIgm9yiNnE_nlPlQRdkshK8KQJp 012jRaKMq6f8gpR1Y36VoFZqCUmux3KBtKQQfRC0WHvBWMZ0yfgC7XoJI1KmoOerJ2hhbVPSqYkL VYzbYfrW9KVz_iru1iPwhyr7tu9b60DVecbct89yXjt5_oqhH1VMPLZeIuWwcxTQOYr.z_D9xgr3 _tkHEo14FkkdaMUk.1mbay9u1.3NJg.Ji.yBmAsu2tjebASL1gyNpDnEHVboaCHiqtKbajrYD1bS 6A1RTGNXONypGGY9Q588bDdULpwuGKKoj7VaWDO8oF33JUSndnbn0bogvyKD6_62.QP2LpphBmmw mh7j16YQRPmJTogfoNOPBkCCFrqTiiCpHwCcuafCNVAZ2YCt3uHKEsW3hJXPPREeu46pqe47V9KH 9sczesj7UMdqRd.34DLORnwtI5bUGa0Z1QqJ6RH.SrGv2HJWWZR74Nwsi39aY4hjoCfluI2eAwbb gupmPxwdIC5zqc8ZAGC0gJuj3Qiz1nwaCeSDZofm7yucYqvdXxDyeGwet.G5ohsOvr3Mt9hgXG.I Av4kz1El7EhomLfAExCS3E.VQ9zdwfPbW7_YVN68Z2sjyfnV91J5DTT1LCO_bJrx4XgOlHUj56.1 DNfPwFM9oNrI.ZhKUZvGN1YtHAVdOfqplLOgbq4NI3ozFhJONMmWSqiDiPgngwjyzj0ftnHQRDsR u2IK0hpcBs12RmcN7U8HaXdulnY7VUuaBYiVclyO1mabwCcUYYdV0XDAJag9y1847wVGLeBLfaIq FToKjTEapdkZsGm2d9.7z4VtYMHITtw3jPyi_nxrwjILQEJphSP.UoIPwqu1cs_fZcTpqG6jxwGE A.2lVfL4igXneNT9RiKXcx0YBBvZzocz_UdsO6bdCDA-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic306.consmr.mail.gq1.yahoo.com with HTTP; Thu, 18 Jun 2020 19:35:59 +0000 Received: by smtp414.mail.bf1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 363180e6305a973ca690e0d6482d8651; Thu, 18 Jun 2020 19:35:56 +0000 (UTC) Subject: Re: [gentoo-user] old kernel on Gentoo To: gentoo-user@lists.gentoo.org References: From: james Message-ID: Date: Thu, 18 Jun 2020 15:35:55 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Mailer: WebService/1.1.16138 hermes_aol Apache-HttpAsyncClient/4.1.4 (Java/11.0.7) X-Archives-Salt: e2c6e7c3-7dea-48e7-a85b-5946c10b157c X-Archives-Hash: 0d341743f36ca806d95f6153e8112819 On 6/17/20 12:52 PM, Raffaele BELARDI wrote: > Hello, > > I might need to build and run an old 3.x kernel on a Desktop PC for some > very specific tests. Would Gentoo be a good solution? > > I see that currently gentoo-sources only includes 4.x and 5.x sources. > > Thanks, > > raffaele > I use a 3.18.40 kernel, currently, on one of my AMD systems. It has thousands of source build packages, not only from portage but many others. Occasionally, I have to use another AMD system, with a newer kernel. I have many old codes, centric to a version 3 of the kernel, that would be a massive pita to move to a 5 version of the kernel. There are plans, as many are related to hybrid-optimized cluster that are NOT centric to the popular cluster codes. Home made 'systolic array processing' is just one legacy collective of old codes, I still use. Many embedded (gentoo) devs still use very old linux kernels for a wide variety of reasons. Products often developed do not change much, except to update the firmware for a strong reason. Thousands (millions?) of companies use very old linux codes, including kernels for a plethora or reason. They just do not publish it. The old stuff, if beautiful compared to much of the bloat-ware we have today. From linux kernels to cluster*. I still run codes on 386/486 machines, just for grins and as a seed for codes that are minimized. IoT from the big vendors is so bloated, they cannot even find problems. Old embedded (gentoo) linux codes run so fast, reliable and easy to collect performance data. You go down this path, its a game-changer. An addition, as minimalist coding and small, secure executables are an artform. Most of the semiconductor manufactures, are *ALWAYS* looking for those types of coders. Hello (TI)! So, YES old gentoo is very alive amongst minimalist and corporations. ymmv. I've run into many that keep incredicle trees of old, reliable codes. They are often much easier for an EE to use in verification of functions, Micro-Controllers, FPGA, etc etc etc. hth, James