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c7c2c3a286
We do this via the PHYSDEVOP_irq_status_query support hypervisor call. We will get a positive value if another domain has binded its PIRQ to the specified GSI (IRQ line). [v2: Deal with v2.6.37-rc1 rebase fallout] [v3: Deal with stable/irq.cleanup fallout] [v4: xen_ignore_irq->xen_test_irq_shared] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>