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    SubjectRe: Using GPL'd Linux drivers with non-GPL, binary-only kernel
    Pavel Machek wrote:
    > If you can make those drivers in your userspace, its certainly okay...

    Agreed. Now, what is userspace?

    If I load a Java class into a Java VM, that class is executing in the
    VM's "userspace", even though both the class and VM execute together
    in the underlying kernel's userspace. If I load an Emacs Lisp library
    into Emacs, that's ok too in the same way.

    I don't want to go over this old argument of where the interface
    boundaries are. That's a very old argument and thoroughly off topic
    for this list.

    What I want to know is the reasonableness of using Linux drivers,
    filesystems and network stack, extracted from the Linux kernel, in
    something that is not Linux and not necessarily GPL'd, using a very
    clear _virtual_ boundary between the Linux parts and the not GPL'd part.

    Running User Mode Linux on HP-UX would be an example which I think is
    clearly acceptable. (Note that User Mode Linux doesn't access devices
    directly, but perhaps it could with some changes).

    I have in mind a virtual machine which is capable of executing device
    drivers written in an appropriate subset of the C language, in which
    wrappers for Linux (and BSD) drivers can be written, so the Java and
    Emacs VM examples above are quite appropriate.

    This seems reasonable to me, although it also seems like quite a
    perversion of Linux to fragment it into GPL'd parts atop a non-GPL'd
    kernel, which is why I had to (being a pervert :) mention the idea on
    this list.

    -- Jamie
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