Re: [Xen-devel] [PATCH v6 1/4] pci: add pci_iomap_wc() variants

[Bjorn Helgaas <bhelgaas@xxxxxxxxxx>]

On Fri, May 22, 2015 at 02:23:41AM +0200, Luis R. Rodriguez wrote:
> On Thu, May 21, 2015 at 05:33:21PM -0500, Bjorn Helgaas wrote:
> > 
> > I tentatively put this (and the rest of the series) on a pci/resource
> > branch.  I'm hoping you'll propose some clarification about
> > EXPORT_SYMBOL_GPL().
> 
> EXPORT_SYMBOL_GPL() also serves to ensure only GPL modules can
> only run that code. So for instance although we have "Dual BSD/GPL"
> tags for modules pure "BSD" tags do not exist for module tags and
> cannot run EXPORT_SYMBOL_GPL() code [0]. Also there is some folks
> who do believe tha at run time all kernel modules are GPL [1] [2].
> And to be precise even though the FSF may claim a list of licenses
> are GPL-compatible we cannot rely on this list alone for our own
> goals and if folks want to use our EXPORT_SYMBOL_GPL()s they must
> discuss this on lkml [2].

By "propose some clarification," I meant that I hoped you would propose a
patch to Documentation/ that would give maintainers some guidance.

> ...

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