tile: support arch_irq_work_raise
Tile includes a hypervisor hook to deliver messages to arbitrary tiles, so we can use that to raise an interrupt as soon as possible on our own core. Unfortunately the Tilera hypervisor disabled that support on principle in previous releases, but it will be available in MDE 4.3.4 and later. Signed-off-by: NChris Metcalf <cmetcalf@ezchip.com> Acked-by: NFrederic Weisbecker <fweisbec@gmail.com>
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arch/tile/include/asm/irq_work.h
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