Hi Baolu, On Wed, 3 May 2023 14:32:15 +0800, Baolu Lu <baolu.lu@xxxxxxxxxxxxxxx> wrote: > On 4/28/23 1:49 AM, Jacob Pan wrote: > > +ioasid_t iommu_alloc_global_pasid_dev(struct device *dev) > > +{ > > + int ret; > > + ioasid_t max; > > + > > + max = dev_iommu_get_max_pasids(dev); > > Perhaps you can use dev->iommu->max_pasids. It's static, so no need to > recalculate it. > sounds good! Thanks, Jacob