linux-kernel - Re: how to tell i386 from x86-64 kernel

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Message-ID: <47A2A54B.90703@zytor.com>
Date:	Thu, 31 Jan 2008 20:51:23 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Pavel Machek <pavel@....cz>
CC:	kernel list <linux-kernel@...r.kernel.org>, jikos@...e.cz
Subject: Re: how to tell i386 from x86-64 kernel

Pavel Machek wrote:
> Hi!
> 
> Quiz: on a booted system, how do you tell 32bit from 64bit kernel?
> 
> A1: zcat /proc/config.gz | grep CONFIG_64
> 
> ...but config.gz is optional
> 
> A2: cat /proc/meminfo  | grep High
> 
> ...but i386 kernel could have highmem disabled
> 
> What is _your_ answer? ;-)>
> 									Pavel

uname -m

	-hpa
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