Re: [PATCH v11 04/13] vfio/pci: Add VFIO_REGION_TYPE_NESTED region type

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> +static int vfio_pci_dma_fault_init(struct vfio_pci_device *vdev)
> +{
> +	struct vfio_region_dma_fault *header;
> +	struct iommu_domain *domain;
> +	size_t size;
> +	bool nested;
> +	int ret;
> +
> +	domain = iommu_get_domain_for_dev(&vdev->pdev->dev);
> +	ret = iommu_domain_get_attr(domain, DOMAIN_ATTR_NESTING, &nested);
> +	if (ret || !nested)
> +		return ret;

Hi Eric,

It seems that the type of nested should be int, the use of bool might trigger
a panic in arm_smmu_domain_get_attr().

Thanks,
Shenming



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