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vfio: ccw: realize VFIO_DEVICE_G(S)ET_IRQ_INFO ioctls
Realize VFIO_DEVICE_GET_IRQ_INFO ioctl to retrieve VFIO_CCW_IO_IRQ information. Realize VFIO_DEVICE_SET_IRQS ioctl to set an eventfd fd for VFIO_CCW_IO_IRQ. Once a write operation to the ccw_io_region was performed, trigger a signal on this fd. Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Acked-by: Alex Williamson <alex.williamson@redhat.com> Message-Id: <20170317031743.40128-12-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
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