PERFORCE change 107824 for review

[M. Warner Losh]

In message: <4534ED30.4030500 at freebsd.org>
            Oleksandr Tymoshenko <gonzo at freebsd.org> writes:
: M. Warner Losh wrote:
: > In message: <200610131444.k9DEi74J035961 at repoman.freebsd.org>
: >             Oleksandr Tymoshenko <gonzo at freebsd.org> writes:
: > : http://perforce.freebsd.org/chv.cgi?CH=107824
: > : 
: > : Change 107824 by gonzo at gonzo_hq on 2006/10/13 14:43:46
: > : 
: > : 	o Tweak exception handlers to conform new pmap model. Kernel map 
: > : 	    works fine, userland still in action.
: > 
: > Did this code come from the NetBSD code, or was it just the idea?
: > Seems odd that these small changes would require adding a NetBSD
: > license...
: 	Code came from NetBSD source tree. Is there any place I can
: read license policy?  I mean it's clear when to put own copyright, but
: there is no info when to put license to file with derived code.

That's hard to know.  Legally, once you get into the 90-95% range, you
most likely have a whole new work (it depends, since once you get to
that point, most of the code likely is insignficant or dictated by
externalities, which isn't covered).  If it is < 50%, then definitely
you need something.  Between these two ends is a judgement call.  Is
there any creative part to what you've included?  If so, then include
the license.

Warner