Re: [PATCH v2 02/11] iommu: Add nested domain support

[Nicolin Chen]

On Fri, May 19, 2023 at 08:51:21AM +0000, Tian, Kevin wrote:
 
> > @@ -346,6 +350,10 @@ struct iommu_ops {
> >   * @iotlb_sync_map: Sync mappings created recently using @map to the
> > hardware
> >   * @iotlb_sync: Flush all queued ranges from the hardware TLBs and empty
> > flush
> >   *            queue
> > + * @cache_invalidate_user: Flush hardware TLBs caching user space IO
> > mappings
> > + * @cache_invalidate_user_data_len: Defined length of input user data for
> > the
> > + *                                  cache_invalidate_user op, being sizeof the
> > + *                                  structure in include/uapi/linux/iommufd.h
> 
> same as comment to last patch, can this be merged with @hw_info?

I think it's better to keep them separate, since this is added
in struct iommu_domain_ops, given it is domain/hwpt specific,
while the hw_info is in struct iommu_ops?

Thanks
Nic