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IRQs can be shared between devices, so using the same label as the PCI device can create conflicts where the IRQ is labeled with one of the device labels preventing assignment of the second device to the second domain. Add the ability to specify an irq label distinct from the PCI device, so a shared irq label can be specified. The policy would then be written such that the two domains can each use the shared IRQ type in addition to their labeled PCI device. That way we can still label most of the PCI device resources and assign devices in the face of shared IRQs. Signed-off-by: Jason Andryuk <jandryuk@gmail.com> Reviewed-by: Daniel P. Smith <dpsmith@apertussolutions.com>