linux-kernel - Re: Drop support for x86-32

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Message-ID: <20120824204958.GA22778@merkur.ravnborg.org>
Date:	Fri, 24 Aug 2012 22:49:58 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Theodore Ts'o <tytso@....edu>, "H. Peter Anvin" <hpa@...or.com>,
	Brian Gerst <brgerst@...il.com>, wbrana <wbrana@...il.com>,
	Martin Nybo Andersen <tweek@...ek.dk>,
	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Daniel Hellstrom <daniel@...sler.com>
Subject: Re: Drop support for x86-32

On Fri, Aug 24, 2012 at 02:57:41PM -0400, Theodore Ts'o wrote:
> On Fri, Aug 24, 2012 at 11:17:20AM -0700, H. Peter Anvin wrote:
> > 
> > Speaking as one of the x86 maintainers... we are currently deciding the
> > cost/benefit tradeoff around removing i386 support.  I don't mean
> > general x86-32 support, I mean i386 as opposed to i486, Pentium, and so on.
> 
> Random question.  As I recall the Space Shuttle and the International
> Space Station was only using 80386's because they have to be hardened
> against radiation/cosmic rays, as well as all of the other mechnical
> and thermal stresses associated with being in a spacecraft.  Is there
> any newer generation cpu's which are space-cerified at this point?

I do not know if you consider the LEON variants of SPARC 32 bit as a new
generation. But they are actively developed and used in space missions.
At least to my best knowledge.

	Sam
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