@@ -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 {
@@ -763,6 +763,12 @@ 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;
+ }
}
}
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: Alexey Kardashevskiy <aik@ozlabs.ru> --- Changes: v3: * removed confusing rationale for the patch, the next patch makes use of it anyway --- drivers/vfio/pci/vfio_pci_private.h | 3 +++ drivers/vfio/pci/vfio_pci.c | 6 ++++++ 2 files changed, 9 insertions(+)