RE: [PATCH] libibverbs: add ARM64 memory barrier macros

["Steve Wise" <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>]

> >> I could utilize the code from FreeBSD.  Does that allow me to submit this
to
> >> libibverbs under the dual GPL/BSD license?
> >>
> >
> > I think I can just re-implement these services myself based published works
> > describing the memory barrier assembly for ARM (like the document Jason
> > referenced earlier).  That will avoid any tainting.
> >
> > Doug: Will that work?
> 
> Either way works actually.  IANAL, but I've been told this multiple
> times and will relay my possibly flawed memory of the legal issue.  The
> original patch, even though lifted from the linux kernel, is likely to
> fall under the scope of "operationally defined" code.  In other words,
> the specific patch you wrote and the thing it implemented is so rigidly
> defined by what it does, that there really is little to no room for any
> different expression of the code.  When there is no room for different
> expressions, the code is not copyrightable.
> 

That makes too much sense... ;)


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