linux-kernel - RE: Old platforms: bring out your dead

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Date:   Fri, 5 Feb 2021 09:13:03 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Pavel Machek' <pavel@....cz>,
        Andy Shevchenko <andy.shevchenko@...il.com>
CC:     Arnd Bergmann <arnd@...nel.org>, Willy Tarreau <w@....eu>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Krzysztof Adamski <krzysztof.adamski@...ia.com>,
        Oleksij Rempel <o.rempel@...gutronix.de>,
        Baruch Siach <baruch@...s.co.il>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Daniel Tang <dt.tangr@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        "Jamie Iles" <jamie@...ieiles.com>,
        Barry Song <song.bao.hua@...ilicon.com>,
        "Viresh Kumar" <viresh.kumar@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Jonas Jensen <jonas.jensen@...il.com>,
        Marc Gonzalez <marc.w.gonzalez@...e.fr>,
        Hartley Sweeten <hsweeten@...ionengravers.com>,
        Lubomir Rintel <lkundrak@...sk>,
        Neil Armstrong <narmstrong@...libre.com>,
        Shawn Guo <shawnguo@...nel.org>, Alex Elder <elder@...aro.org>,
        "Alexander Shiyan" <shc_work@...l.ru>,
        Koen Vandeputte <koen.vandeputte@...ntric.com>,
        Hans Ulli Kroll <ulli.kroll@...glemail.com>,
        Vladimir Zapolskiy <vz@...ia.com>,
        Wei Xu <xuwei5@...ilicon.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Yoshinori Sato <ysato@...rs.osdn.me>,
        Mark Salter <msalter@...hat.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        "Geert Uytterhoeven" <geert+renesas@...der.be>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: RE: Old platforms: bring out your dead

> We have open-hardware implementation for 486, AFAICT, thanks to MISTer
> project. I'm not aware of open 586 core.
> 
> Being able to run recent Linux on open hardware sounds fun.

Putting a 486 on an fpga might be 'interesting'.
But it has a lot of 'cruft' (like 286 protected mode) that
you really don't need.
I'd bet RISCV comes out smaller.

Most x86 ports are actually IBM-PC ports - so you'd also have
to sort out all the peripherals.

	David

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