linux-kernel - Re: [PATCH -v2 2/2] x86: Make Linux guest support optional

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Date:	Fri, 25 Jan 2013 10:12:51 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>,
	X86 ML <x86@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	devel@...uxdriverproject.org, olaf@...fle.de, apw@...onical.com,
	jasowang@...hat.com, Thomas Gleixner <tglx@...utronix.de>,
	JBeulich@...e.com, Borislav Petkov <bp@...e.de>,
	Dmitry Torokhov <dtor@...are.com>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: Re: [PATCH -v2 2/2] x86: Make Linux guest support optional

Hi Borislav,

On Fri, Jan 25, 2013 at 06:59:37PM +0100, Borislav Petkov wrote:
> From: Borislav Petkov <bp@...e.de>
> 
> Put all config options needed to run Linux as a guest behind a
> CONFIG_HYPERVISOR_GUEST menu so that they don't get built-in by
> default but selected by the user. Also, move x86_hyper into an
> unconditionally-built compilation unit because it is exported with the
> non-GPL flavour and we can't know whatever uses it on the outside.

I am confused by this statement... How can EXPORT_SYMBOL() vs
EXPORT_SYMBOL_GPL() help you determining if it is used out of tree or
not?

Thanks.

-- 
Dmitry
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