vfio: ccw: realize VFIO_DEVICE_G(S)ET_IRQ_INFO ioctls

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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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Dong Jia Shi 2017-03-17 04:17:38 +01:00 • committed by Cornelia Huck

parent 83d1193a96

commit 120e214e50

3 changed files with 134 additions and 3 deletions

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123

drivers/s390/cio/vfio_ccw_ops.c

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4

drivers/s390/cio/vfio_ccw_private.h

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10

include/uapi/linux/vfio.h

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