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[Xen-devel] Re: [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;


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).


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