Re: [PATCH v2 01/12] iommu: Pass old domain to set_dev_pasid op

[Baolu Lu <baolu.lu@xxxxxxxxxxxxxxx>]

On 4/12/24 4:15 PM, Yi Liu wrote:
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index 40dd439307e8..1e5e9249c93f 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -631,7 +631,7 @@ struct iommu_ops {
>   struct iommu_domain_ops {
>   	int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
>   	int (*set_dev_pasid)(struct iommu_domain *domain, struct device *dev,
> -			     ioasid_t pasid);
> +			     ioasid_t pasid, struct iommu_domain *old);

Is it possible to add another op to replace a domain for pasid? For
example,

	int (*replace_dev_pasid)(domain, dev, pasid, old_domain)

Best regards,
baolu