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Date: Sun, 12 Dec 2004 23:37:40 +0100
From: Willy Tarreau <willy@w.ods.org>
To: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: Andi Kleen <ak@suse.de>, discuss@x86-64.org, linux-kernel@vger.kernel.org
Subject: Re: how to detect a 32 bit process on 64 bit kernel
Message-ID: <20041212223740.GF17946@alpha.home.local>
References: <20040901072245.GF13749@mellanox.co.il> <20040903080058.GB2402@wotan.suse.de> <20040907104017.GB10096@mellanox.co.il> <20040907121418.GC25051@wotan.suse.de> <20041212215110.GA11451@mellanox.co.il>
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On Sun, Dec 12, 2004 at 11:51:10PM +0200, Michael S. Tsirkin wrote:
> Hello!
> Is there a reliable way e.g. on x86-64 (or ia64, or any other
> 64-bit system), from the char device driver,
> to find out that I am running an operation in the context of a 32-bit
> task?

aren't there informations in /proc/$$/maps or other things which will
change their format or contents in 32 or 64 bits addressing, which would
help you detect the mode you're currently running ?

Willy