From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Fri, 08 Oct 2010 23:10:42 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-help] a xenomai qustion
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To: luxInteg <lux-integ@domain.hid>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>

luxInteg wrote:
> Greetings,
> 
> I am about to restart dabbling with xenomai on a cblfs x86_64/64-bit machine .  
> I have a question. Could one have multiple instances of kernels  
> patched/compiled/installed  thus  multiple instances of /lib/modules-xyz  AND 
> a single instance of xenomai in userspace  that works with all of them?
> 
> Advice would be appreciated.

The answer to your question is that the ABI is compatible between the
kernel-space and user-space. This means:
- kernel-space and user-space must be from the same branch, say,
kernel-space version 2.5.x with user-space version 2.5.y;
- they must be configured with compatible options, the said options
being dependent on the architectures and being described in the
README.INSTALL document:
http://www.xenomai.org/documentation/xenomai-2.5/README.INSTALL

-- 
                                                                Gilles.