From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas.monjalon-pdR9zngts4EAvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH v2 07/16] Add support for VFIO interrupts,
	add VFIO header
Date: Thu, 22 May 2014 05:49:02 -0700 (PDT)
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To: "Burakov, Anatoly" <anatoly.burakov-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
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2014-05-22 12:45, Burakov, Anatoly:
> > In case VFIO is backported on older kernel, it would be better to check a
> > related macro instead of Linux version.
> 
> Not sure I follow. What is the "related macro" you're referring to?

I don't know if there is something defined in a Linux header which could help 
to check if VFIO is supported. But in general, it's better to check for a 
macro belonging to the feature instead of checking kernel version.

-- 
Thomas