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From: Arjan van de Ven <arjan@infradead.org>
To: Jan Engelhardt <jengelh@computergmbh.de>
Cc: "Alejandro Riveira Fernández" <ariveira@gmail.com>,
	"Ray Lee" <ray-lk@madrabbit.org>, "Pavel Machek" <pavel@ucw.cz>,
	"kernel list" <linux-kernel@vger.kernel.org>,
	jikos@suse.cz
Subject: Re: how to tell i386 from x86-64 kernel
Date: Sat, 9 Feb 2008 14:34:30 -0800	[thread overview]
Message-ID: <20080209143430.193131d8@laptopd505.fenrus.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0802092112510.6917@fbirervta.pbzchgretzou.qr>

On Sat, 9 Feb 2008 21:13:43 +0100 (CET)
Jan Engelhardt <jengelh@computergmbh.de> wrote:

> 
> On Feb 1 2008 12:53, Alejandro Riveira Fernández wrote:
> >> 
> >> # uname -m
> >> I won't tell you.
> >> # linux32 uname -m
> >> i686
> >
> > Ubuntu 7.10 64 bit userland 2.6.24
> >
> >$ uname -m
> >x86_64
> >$ linux32 uname -m
> >i686
> 
> What I am saying is that uname(2) does not reliably tell you whether
> you have a 64-bit kernel underneath unless you have other sources of 
> information.

that's sort of a rabbit-and-the-frog problem. The 32 bit emulator tries to
look EXACTLY like the 32 bit kernel, and it really should.
If someone wants a method to detect even that... we would really want
to know the exact usecase.. because very likely it's the wrong answer
to some other problem ;-)

-- 
If you want to reach me at my work email, use arjan@linux.intel.com
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org

  reply	other threads:[~2008-02-09 22:34 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-01  0:42 Pavel Machek
2008-02-01  0:46 ` Ray Lee
2008-02-01  0:59   ` Jan Engelhardt
2008-02-01 11:53     ` Alejandro Riveira Fernández
2008-02-09 20:13       ` Jan Engelhardt
2008-02-09 22:34         ` Arjan van de Ven [this message]
2008-02-10  1:27           ` Pavel Machek
2008-02-01  1:03   ` Pavel Machek
2008-02-01  4:51 ` H. Peter Anvin
2008-02-01 10:07   ` Jiri Kosina
     [not found] <960D0E79B4E503448AD14B5E40A5C1C7BB54CE@USX1.corp.bb>
2008-02-01  1:37 ` Jan Engelhardt
2008-02-01 10:47 Rik Bobbaers
2008-02-02 11:06 ` Pavel Machek

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