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Re: how to tell i386 from x86-64 kernel

Previous thread: Are Section mismatches out of control? by Sam Ravnborg on Friday, February 1, 2008 - 6:47 am. (24 messages)

Next thread: [PATCH] x86: fixes for lookup_address args by Harvey Harrison on Friday, February 1, 2008 - 7:13 am. (1 message)
[view original message]
From: Rik Bobbaers <Rik.Bobbaers@...>
To: <linux-kernel@...>
Subject: Re: how to tell i386 from x86-64 kernel
Date: Friday, February 1, 2008 - 6:47 am

hi there,


since i'm not on the list... how about:


tail /proc/1/smaps and check the address size...

on 32 bit: ffffe000-fffff000 r-xp 00000000 00:00 0          [vdso]


on 64 bit: ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0

[vdso]


there you can clearly see that your address space is double... so

there's your 32 bit vs 64 bit


as a normal user, you can do the same but with your own processes


--

harry

aka Rik Bobbaers


K.U.Leuven - LUDIT            -=- Tel: +32 485 52 71 50

Rik.Bobbaers@icts.kuleuven.be -=- http://harry.enzoverder.be


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[view original message]
From: Pavel Machek <pavel@...>
To: Rik Bobbaers <Rik.Bobbaers@...>
Cc: <linux-kernel@...>
Subject: Re: how to tell i386 from x86-64 kernel
Date: Saturday, February 2, 2008 - 7:06 am

That tells you if _init_ is 32 or 64 bit, not kernel.


I'm running 32-bit distro on 64-bit kernel here. It works fine (as it

should).


									Pavel


--

(english) http://www.livejournal.com/~pavelmachek

(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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Previous thread: Are Section mismatches out of control? by Sam Ravnborg on Friday, February 1, 2008 - 6:47 am. (24 messages)

Next thread: [PATCH] x86: fixes for lookup_address args by Harvey Harrison on Friday, February 1, 2008 - 7:13 am. (1 message)