Commit cf8d6d3e authored by Keir Fraser's avatar Keir Fraser

COPYING: Add discussion about GPL compatibility of Modified BSD licenses.

Signed-off-by: default avatarKeir Fraser <>
parent bd0e0b04
......@@ -9,6 +9,15 @@ the files in this repository are concerned is _this_ particular
version of the license (i.e., *only* v2, not v2.2 or v3.x or
whatever), unless explicitly otherwise stated.
Some code fragments in the hypervisor and associated subsystems
include the 2- or 3-clause BSD license stanzas (also known as Modified
BSD licenses). When these code sections are compiled as part of a
GPLv2-licensed program, such as Xen, the result is licensed under
GPLv2. See the FSF's definition of GPL compatibility:
And how this applies to a range of open source licenses:
Licensing Exceptions (the relaxed BSD-style license)
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