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Re: dropping 32-bit host support

From: Philippe Mathieu-Daudé
Subject: Re: dropping 32-bit host support
Date: Thu, 16 Mar 2023 11:56:49 +0100
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.8.0

On 16/3/23 11:22, Andrew Randrianasulu wrote:
чт, 16 мар. 2023 г., 12:17 Andrew Randrianasulu <randrianasulu@gmail.com <mailto:randrianasulu@gmail.com>>:
    чт, 16 мар. 2023 г., 11:31 Thomas Huth <thuth@redhat.com
        On 16/03/2023 08.36, Philippe Mathieu-Daudé wrote:
         > On 16/3/23 08:17, Andrew Randrianasulu wrote:
         >> чт, 16 мар. 2023 г., 10:05 Philippe Mathieu-Daudé
        <philmd@linaro.org <mailto:philmd@linaro.org>
         >> <mailto:philmd@linaro.org <mailto:philmd@linaro.org>>>:
         >>     On 16/3/23 01:57, Andrew Randrianasulu wrote:
         >>      > Looking at https://wiki.qemu.org/ChangeLog/8.0
         >>     <https://wiki.qemu.org/ChangeLog/8.0
         >>      > <https://wiki.qemu.org/ChangeLog/8.0
         >>     <https://wiki.qemu.org/ChangeLog/8.0
         >>      >
         >>      > ===
         >>      > System emulation on 32-bit x86 and ARM hosts has been
         >>     The
         >>      > QEMU project no longer considers 32-bit x86 and ARM
        support for
         >>     system
         >>      > emulation to be an effective use of its limited
        resources, and thus
         >>      > intends to discontinue.

Still, pushing users into endless hw upgrade is no fun:


note e-waste and energy consumption

This graph does not make me happy:


Note this paradox too

https://en.m.wikipedia.org/wiki/Jevons_paradox <https://en.m.wikipedia.org/wiki/Jevons_paradox>

         >> [...] I also ran qemu-system-ppc on Huawei Matepad T8 (32
        bit Android,
         >> too) for emulating old mac os 9. Yes, I can wait 10 min per
        guest boot.
         >> Fedora 36 armhf boots even slower on emulation!

        Yes, but for such scenarios, you can also use older versions of
        QEMU, you
        don't need the latest and greatest shiny QEMU version.

Thomas answer still applies: if you can use QEMU v8.0.0 to emulate
macOS 9 on your Huawei Matepad T8 with 32-bit Android, why worry
about trying to use future QEMU versions?

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