Messages in this thread Patch in this message | | | From | Alexey Kardashevskiy <> | Subject | [PATCH kernel v7 19/20] vfio_pci: Allow regions to add own capabilities | Date | Thu, 20 Dec 2018 19:23:49 +1100 |
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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> Acked-by: Alex Williamson <alex.williamson@redhat.com> --- 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(+)
diff --git a/drivers/vfio/pci/vfio_pci_private.h b/drivers/vfio/pci/vfio_pci_private.h index 86aab05..93c1738 100644 --- a/drivers/vfio/pci/vfio_pci_private.h +++ b/drivers/vfio/pci/vfio_pci_private.h @@ -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 { diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c index 4a6f7c0..6cb70cf 100644 --- a/drivers/vfio/pci/vfio_pci.c +++ b/drivers/vfio/pci/vfio_pci.c @@ -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; + } } } -- 2.17.1
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