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Commit c2c0f1cd authored by Alexey Kardashevskiy's avatar Alexey Kardashevskiy Committed by Michael Ellerman
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vfio_pci: Allow regions to add own capabilities 



VFIO regions already support region capabilities with a limited set of
fields. However the subdriver might have to report to the userspace
additional bits.

This adds an add_capability() hook to vfio_pci_regops.

Signed-off-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: default avatarAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent a15b1883

drivers/vfio/pci/vfio_pci.c

+6 −0
Original line number Diff line number Diff line
@@ -750,6 +750,12 @@ static long vfio_pci_ioctl(void *device_data, 
			if (ret)

				return ret;



			if (vdev->region[i].ops->add_capability) {

				ret = vdev->region[i].ops->add_capability(vdev,

						&vdev->region[i], &caps);

				if (ret)

					return ret;

			}

		}

		}

drivers/vfio/pci/vfio_pci_private.h

+3 −0
Original line number Diff line number Diff line
@@ -62,6 +62,9 @@ struct vfio_pci_regops { 
	int	(*mmap)(struct vfio_pci_device *vdev,

			struct vfio_pci_region *region,

			struct vm_area_struct *vma);

	int	(*add_capability)(struct vfio_pci_device *vdev,

				  struct vfio_pci_region *region,

				  struct vfio_info_cap *caps);

};



struct vfio_pci_region {