linux-kernel - Re: [PATCH] [39/40] i386: Export paravirt

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Date:	Mon, 30 Apr 2007 14:28:59 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Andi Kleen <ak@...e.de>
Cc:	Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	Christoph Hellwig <hch@...radead.org>, mingo@...e.hu,
	patches@...-64.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [39/40] i386: Export paravirt_ops for non GPL modules
	too

On Mon, 2007-04-30 at 13:19 +0200, Andi Kleen wrote:
> On Monday 30 April 2007 13:15:36 Jan Engelhardt wrote:
> > 
> > On Apr 30 2007 13:00, Andi Kleen wrote:
> > >On Monday 30 April 2007 12:50:09 Christoph Hellwig wrote:
> > >> On Mon, Apr 30, 2007 at 12:28:14PM +0200, Andi Kleen wrote:
> > >> > 
> > >> > Otherwise non GPL modules cannot even do basic operations
> > >> > like disabling interrupts anymore, which would be excessive.
> > >> > 
> > >> > Longer term should split the single structure up into
> > >> > internal and external symbols and not export the internal
> > >> > ones at all.
> > >> > 
> > >> > Signed-off-by: Andi Kleen <ak@...e.de>
> > >> 
> > >> Ingo was dead-set against this and I kinda agree. 
> > >
> > >The problem is that without this non GPL modules cannot even disable
> > >interrupts anymore. That is imho too radical.
> > 
> > Perhaps we can have a paravirt_ops2 that specifically deals with
> > interrupt en/disable, and export that instead?
> 
> Yes that is what the "Longer term ..." paragraph above refers to.
> However it would need some restructuring in the code.

FWIW I think doing this first will be better, exposing _all_ to non GNU
modules will weaken whatever case we might have to take it away later.

So, NACK from me too.

I don't want to hear the whining; but it was allowed in .22, so why
should we not be able to do this in .23.... or whatever.



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