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    SubjectRe: [RFC PATCH 09/33] Add start-of-day setup hooks to subarch
    Keir Fraser wrote:
    >>> +struct shared_info *HYPERVISOR_shared_info = (struct shared_info
    >>> *)empty_zero_page;
    >>> +EXPORT_SYMBOL(HYPERVISOR_shared_info);
    >>> ...
    >>
    >> EXPORT_SYMBOL_GPL?
    >
    > Interrupt-control macros (local_irq_enable/disable and friends) used
    > this symbol, so GPLing it made non-GPL modules fail. We made a bunch
    > of the macros proper functions so this may no longer be the case.

    Given that this is just a page exported from the hypervisor, it doesn't
    make much sense to impose a GPL requirement on this symbol (to put it
    another way, this is more part of the Xen ABI than the Linux API, so
    Linux can't make much claim to it).

    J
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