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From: David Wright <deblis@lionunicorn.co.uk>
Newsgroups: linux.debian.user
Subject: Re: i386 or AMD64 - Which is currently running?
Date: Tue, 01 Feb 2022 04:00:01 +0100
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X-Original-Date: Mon, 31 Jan 2022 20:56:17 -0600
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On Mon 31 Jan 2022 at 21:02:17 (-0500), Stefan Monnier wrote:
> Greg Wooledge [2022-01-31 16:45:52] wrote:
> > On Mon, Jan 31, 2022 at 04:37:37PM -0500, Stefan Monnier wrote:
> >> BTW, for the twisted-minded it's probably possible to run a 64bit
> >> userspace on a 32bit kernel.
> > No.  Or at least, not that I've ever heard of.  If technology has been
> > invented to make this possible, it's new to me.
> 
> I don't think there's any need to invent anything for that. I don't see
> anything particularly hard about emulating a 64bit instruction set on
> a 32bit system.

I wasn't aware that anybody did emulate the /instruction/ set.
I was under the impression that such systems only ran on 32-bit
systems that were themselves running on 64-bit hardware. Just a
more complicated host-guest relationship in that case.

> Performance may not be great, but that's a secondary concern.

Cheers,
David.