linux-kernel - Re: RFD: x32 ABI system call numbers

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Message-ID: <m2ty8znzoz.fsf@firstfloor.org>
Date:	Tue, 30 Aug 2011 00:09:00 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Kyle Moffett <kyle@...fetthome.net>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"H.J. Lu" <hjl.tools@...il.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: RFD: x32 ABI system call numbers

Kyle Moffett <kyle@...fetthome.net> writes:

Old wisdom, as wrong as always.

> The only programs which really care are those which map many gigs
> of stuff into memory (IE: big databases, etc). 

You mean anything that mmaps a file?

2-3GB is not a whole lot these days.

2Gb is a very similar thing as Linus y2038, just you're much more
likely to hit it.

IMHO the only excuse right now for 32bit is to use it in a JIT
that can dynamically expand the pointer. Or for old binaries.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only
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