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

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Message-ID: <ccd3b552-a155-46fd-b0ee-33e272f4b9b9@email.android.com>
Date:	Fri, 24 Aug 2012 12:38:10 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Theodore Ts'o" <tytso@....edu>
CC:	Brian Gerst <brgerst@...il.com>, wbrana <wbrana@...il.com>,
	Martin Nybo Andersen <tweek@...ek.dk>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Drop support for x86-32

ESA has the Leon series (SPARC)...

Theodore Ts'o <tytso@....edu> 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?
>
>(Of course, I'm rather doubtful that NASA would ever be willing to use
>Linux on something like the Curiosity Mars Rover, but I could imagine
>Linux being used in a non-mission critcal system on the ISS....)
>
>      	      		    	    	      - Ted

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