> From: Nicolin Chen <nicol...@nvidia.com>
> Sent: Saturday, January 11, 2025 11:32 AM
>
> @@ -224,8 +224,10 @@ struct iommu_domain {
> phys_addr_t msi_addr);
> #endif
>
> - void *fault_data;
> - union {
> + union { /* Pointer usable by owner of the domain */
> + struct iommufd_hw_pagetable *iommufd_hwpt; /* iommufd
> */
> + };
> + union { /* Fault handler */hmm is it better to rename it as "void *private;" and let the caller do type conversion?
