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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Lameter <clameter@sgi.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Martin Bligh <mbligh@mbligh.org>, Ingo Molnar <mingo@elte.hu>,
	linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Chris Wright <chrisw@sous-sol.org>,
	Rusty Russell <rusty@rustcorp.com.au>,
	Glauber de Oliveira Costa <glommer@gmail.com>
Subject: Re: [PATCH 00/18] Make common x86 arch area for i386 and x86_64 - Take 2
Date: Sun, 18 Mar 2007 16:10:38 -0700 (PDT)	[thread overview]
Message-ID: <Pine.LNX.4.64.0703181608320.6730@woody.linux-foundation.org> (raw)
In-Reply-To: <20070316114415.GA26403@one.firstfloor.org>



On Fri, 16 Mar 2007, Andi Kleen wrote:

> > In the future it is likely that x86_64 will significantly deviate from 
> 
> It already is in some cases. And I agree more will happen.

This is a *totally* bogus and idiotic argument.

x86-64 will get new capabilities, BUT IT WILL CONTINUE TO SUPPORT OLD 
x86-64 machines.

And those machines are basically identical to perfectly regular i386 
platforms.

So the whole argument that it would "diverge" is total crap. It obviously 
won't diverge, simply because the support for old setups is needed on 
x86-64 *regardless* of whether 32-bit support exists on the same platform 
or not.

There's a huge difference between divergence and "more capabilities".

		Linus

  parent reply	other threads:[~2007-03-18 23:11 UTC|newest]

Thread overview: 82+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-14  5:08 Steven Rostedt
2007-03-14  5:08 ` [PATCH 01/18] toplevel Kconfig changes Steven Rostedt
2007-03-14  5:08 ` [PATCH 02/18] x86 Makefile changes Steven Rostedt
2007-03-14  5:08 ` [PATCH 03/18] acpi Makefile updates Steven Rostedt
2007-03-14  5:08 ` [PATCH 04/18] make the cpu/cpufreq/Makefile Steven Rostedt
2007-03-14  5:08 ` [PATCH 05/18] mv kernel/cpu/cpufreq/p4-clockmod.c Steven Rostedt
2007-03-14  5:08 ` [PATCH 06/18] mv kernel/cpu/cpufreq/speedstep-lib.h Steven Rostedt
2007-03-14  5:08 ` [PATCH 07/18] mv kernel/cpu/cpufreq/speedstep-lib.c Steven Rostedt
2007-03-14  5:08 ` [PATCH 08/18] create x86/kernel/cpu/Makefile Steven Rostedt
2007-03-14  5:08 ` [PATCH 09/18] create x86/kernel/cpu/mcheck/Makefile Steven Rostedt
2007-03-14  5:08 ` [PATCH 10/18] make the kernel Makefile Steven Rostedt
2007-03-14  5:08 ` [PATCH 11/18] rm include pointer to x86_64 early_printk.c Steven Rostedt
2007-03-14  5:08 ` [PATCH 12/18] rm include pointer to x86_64 tsc_sync.c Steven Rostedt
2007-03-14  5:08 ` [PATCH 13/18] create x86/lib/Makefile Steven Rostedt
2007-03-14  5:08 ` [PATCH 14/18] rm include pointer to i386 msr-on-cpu.c file Steven Rostedt
2007-03-14  5:08 ` [PATCH 15/18] create x86/mm/Makefile Steven Rostedt
2007-03-14  5:08 ` [PATCH 16/18] kconfig for oprofile Steven Rostedt
2007-03-14  5:08 ` [PATCH 17/18] create x86/oprofile/Makefile Steven Rostedt
2007-03-14  5:08 ` [PATCH 18/18] Straight file moves Steven Rostedt
2007-03-14 15:44   ` Linus Torvalds
2007-03-14 16:11     ` Steven Rostedt
2007-03-14  8:00 ` [PATCH 00/18] Make common x86 arch area for i386 and x86_64 - Take 2 Jan Engelhardt
2007-03-14 16:52   ` Linus Torvalds
2007-03-14 10:36 ` Andi Kleen
2007-03-14  9:48   ` sujay g
2007-03-14 12:35   ` Steven Rostedt
2007-03-14 13:05     ` Andi Kleen
2007-03-14 13:36       ` Steven Rostedt
2007-03-14 18:47         ` Andi Kleen
2007-03-14 18:57           ` Jeremy Fitzhardinge
2007-03-14 12:53   ` Ingo Molnar
2007-03-14 13:33     ` Steven Rostedt
2007-03-14 13:41       ` Ingo Molnar
2007-03-14 14:46         ` Steven Rostedt
2007-03-14 16:33           ` Jan Engelhardt
2007-03-14 17:39             ` Steven Rostedt
2007-03-14 17:51               ` Linus Torvalds
2007-03-14 16:49         ` Linus Torvalds
2007-03-14 18:15           ` Ingo Molnar
2007-03-15 16:50             ` Nick Piggin
2007-03-15 17:26               ` Andi Kleen
2007-03-14 15:54     ` Linus Torvalds
2007-03-14 18:09       ` Ingo Molnar
2007-03-14 18:27         ` Linus Torvalds
2007-03-14 19:59           ` Ingo Molnar
2007-03-14 20:07             ` Andi Kleen
2007-03-14 20:19               ` Ingo Molnar
2007-03-14 20:34                 ` Andi Kleen
2007-03-14 20:11             ` Ingo Molnar
2007-03-14 20:21               ` Andi Kleen
2007-03-14 21:34                 ` Jan Engelhardt
2007-03-15 15:50       ` Martin Bligh
2007-03-15 15:59         ` Linus Torvalds
2007-03-15 16:06           ` Andi Kleen
2007-03-15 16:23             ` Linus Torvalds
2007-03-15 16:47             ` Steven Rostedt
2007-03-15 16:57               ` Steven Rostedt
2007-03-15 17:01                 ` Andi Kleen
2007-03-15 17:21                   ` Steven Rostedt
2007-03-16  4:28               ` Christoph Lameter
2007-03-16 11:44                 ` Andi Kleen
2007-03-16 20:15                   ` Christoph Lameter
2007-03-16 20:25                     ` Martin Bligh
2007-03-16 20:48                       ` Christoph Lameter
2007-03-16 20:53                         ` David Miller
2007-03-16 20:56                           ` Christoph Lameter
2007-03-16 20:58                             ` David Miller
2007-03-16 20:59                         ` Martin Bligh
2007-03-16 21:02                           ` Christoph Lameter
2007-03-16 21:51                             ` Linus Torvalds
2007-03-19 14:27                           ` Andy Whitcroft
2007-03-16 20:47                     ` David Miller
2007-03-16 20:52                       ` Christoph Lameter
2007-03-16 20:55                         ` David Miller
2007-03-16 20:59                           ` Christoph Lameter
2007-03-16 20:59                     ` Dave Hansen
2007-03-18 23:10                   ` Linus Torvalds [this message]
2007-03-19 11:08                     ` Andi Kleen
2007-03-15 20:02           ` Jan Engelhardt
2007-03-14 15:49   ` Linus Torvalds
2007-03-14 18:40   ` Adrian Bunk
2007-03-16  4:07 ` Kasper Sandberg

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