[Intel-gfx] [PATCH v4 9/9] vfio/pci: Allow passing zero-length fd array in VFIO_DEVICE_PCI_HOT_RESET

[Tian, Kevin]

> From: Liu, Yi L <yi.l.liu at intel.com>
> Sent: Wednesday, April 26, 2023 10:54 PM
>
> +static bool vfio_dev_in_iommufd_ctx(struct vfio_pci_core_device *vdev,
> +				    struct iommufd_ctx *iommufd_ctx)
> +{
> +	struct iommufd_ctx *iommufd = vfio_iommufd_physical_ictx(&vdev-
> >vdev);
> +	struct iommu_group *iommu_group;
> +
> +	if (!iommufd_ctx)
> +		return false;
> +
> +	if (iommufd == iommufd_ctx)
> +		return true;
> +
> +	iommu_group = iommu_group_get(vdev->vdev.dev);
> +	if (!iommu_group)
> +		return false;
> +
> +	/*
> +	 * Try to check if any device within iommu_group is bound with
> +	 * the input iommufd_ctx.
> +	 */
> +	return vfio_devset_iommufd_has_group(vdev->vdev.dev_set,
> +					     iommufd_ctx, iommu_group);

iommu_group is not put.