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=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 DD5F4C433DB for ; Wed, 13 Jan 2021 12:19:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 923662076A for ; Wed, 13 Jan 2021 12:19:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727678AbhAMMSz (ORCPT ); Wed, 13 Jan 2021 07:18:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37124 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727011AbhAMMSy (ORCPT ); Wed, 13 Jan 2021 07:18:54 -0500 Received: from mail-pg1-x52e.google.com (mail-pg1-x52e.google.com [IPv6:2607:f8b0:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6548BC061794 for ; Wed, 13 Jan 2021 04:18:14 -0800 (PST) Received: by mail-pg1-x52e.google.com with SMTP id q7so1391804pgm.5 for ; Wed, 13 Jan 2021 04:18:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=P9ahPQbje2YtpgJfeiSL5QGshwZQgdByQZ+Pya75CZA=; b=tNTCiQ7GMWzFkLEG7ORU88v39wGzGRYl9KFr3RxsiT/kZ8yHFPNarlkoMJ6e51SjQe Y7O6JMP99y80RKDjbTglivwznxqtotw4qFM1FdKW8PSOwydv2ZYD+3+1C5M8vdfcity6 8gBkbKBbdujwHPmqJSI2TAXjTGbkA5MrsvY3wBy+pjYxyZGGESwMtiymUrTjH0K34C0G d12X2K0uhi+aBt3AJmhgr35zsVwAEUlVnVm9W1sEo41PsMOpk1/BLSKtsoF+sbYUK/Sz kHGFshIoPaGRjK8sBVqU8KtCjg71FLKK0Yjsw7zazNOk4i4VJUMqdQEA8Ano8ocNR3Nb TXQA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=P9ahPQbje2YtpgJfeiSL5QGshwZQgdByQZ+Pya75CZA=; b=gQtD7J/+hhWBaX4YA4Is4bHQ9ncuDRPMCZ0DcC8KLH+93zaj3dv3Aj1qWgmawlU2Ka GX+M5cD+Tj72kwwhdjhy4ThZIfXZjP39Kg5HGTzJCCTRrsX6Y0yyOmMzsjLL3w5gjN+A x0m65enVZgMS6P9Mx29crq7IQWi04klEdg7l5xnjClePbF+WkcjZGS+Eef60iRoeSqy0 a51lfu7i76dXqGaNFPM5kRVx58cMFtgW3p0a81LiDwwOPQiWGNoCTtefN9dLzf4yNawO 2cYZYaNenBLwnjrHaD+BJo8Vw5sR5rdA7fH1k78BXtWlSfS2h9VbK5nlKBzORDQEYSu8 lZoA== X-Gm-Message-State: AOAM530iicDhJVaw8tIkS/gtQ313h0Hy10ZBMRdTcgiwyfV2iIPn8UgQ I3QpB/eAdaH1KZmsx592zA9BqWYbqadjojNgk/M= X-Google-Smtp-Source: ABdhPJyyTXHJ2TNL0QmMXflUHHAg5HOWiok28GMlB5NNiozRaE9LGKOGJEM26l8Uy6hfzfc9yIA8+XCmk58wESIBFV0= X-Received: by 2002:a63:74b:: with SMTP id 72mr1873582pgh.4.1610540293878; Wed, 13 Jan 2021 04:18:13 -0800 (PST) MIME-Version: 1.0 References: <20210109055645.GA2009@1wt.eu> <6fb7e3f5035d44fab9801001f1811b59@AcuMS.aculab.com> In-Reply-To: From: Andy Shevchenko Date: Wed, 13 Jan 2021 14:17:57 +0200 Message-ID: Subject: Re: Old platforms: bring out your dead To: Linus Walleij Cc: William Breathitt Gray , David Laight , Arnd Bergmann , Willy Tarreau , Linux ARM , Linux Kernel Mailing List , Krzysztof Adamski , Oleksij Rempel , Baruch Siach , Russell King - ARM Linux , Daniel Tang , =?UTF-8?Q?Uwe_Kleine=2DK=C3=B6nig?= , Jamie Iles , Barry Song , Viresh Kumar , Jonas Jensen , Marc Gonzalez , Hartley Sweeten , Lubomir Rintel , Neil Armstrong , Shawn Guo , Alex Elder , Alexander Shiyan , Koen Vandeputte , Hans Ulli Kroll , Vladimir Zapolskiy , Wei Xu , Steven Rostedt , Yoshinori Sato , Mark Salter , Michael Ellerman , Geert Uytterhoeven , Thomas Bogendoerfer Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 13, 2021 at 2:02 PM Linus Walleij wrote: > > On Wed, Jan 13, 2021 at 11:27 AM Andy Shevchenko > wrote: > > On Mon, Jan 11, 2021 at 11:55 AM David Laight wrote: > > > > basically 486 but have a few extra instructions - probably just cpuid > > > and (IIRC) rdtsc. > > > Designed for low power embedded use they won't ever have been suitable > > > for a desktop - but are probably fast enough for some uses. > > > I'm not sure how much keeping 486 support actually costs, 386 was a > > > PITA - but the 486 fixed most of those issues. > > > > Right, we have "last of mohicans" (to date) Intel Quark family of CPUs > > (486 core + few i586 features). > > This is for the embedded world and probably not for powerful use. > > What is the status of PC/104? Personally I have no idea, but... > https://en.wikipedia.org/wiki/PC/104 ...from this we learn about PC/104 consortium on site of which we may learn about new products: https://pc104.org/products/vcs-1-pc-104-system-for-precision-robotics-applications/ One and a half years ago, not dead to me. -- With Best Regards, Andy Shevchenko