On Sat, Oct 29, 2022 at 03:25:00PM +0800, Baolu Lu wrote: > On 2022/10/26 2:12, Jason Gunthorpe wrote: > > +/** > > + * struct iommu_ioas_iova_ranges - ioctl(IOMMU_IOAS_IOVA_RANGES) > > + * @size: sizeof(struct iommu_ioas_iova_ranges) > > + * @ioas_id: IOAS ID to read ranges from > > + * @num_iovas: Input/Output total number of ranges in the IOAS > > + * @__reserved: Must be 0 > > + * @allowed_iovas: Pointer to the output array of struct iommu_iova_range > > + * @out_iova_alignment: Minimum alignment required for mapping IOVA > > + * > > + * Query an IOAS for ranges of allowed IOVAs. Mapping IOVA outside these ranges > > + * is not allowed. out_num_iovas will be set to the total number of iovas and > > + * the out_valid_iovas[] will be filled in as space permits. > > "out_num_iovas" and "out_valid_iovas[]" are outdated. > > > +/** > > + * struct iommu_ioas_allow_iovas - ioctl(IOMMU_IOAS_ALLOW_IOVAS) > > + * @size: sizeof(struct iommu_ioas_allow_iovas) > > + * @ioas_id: IOAS ID to allow IOVAs from > > @num_iovas: The number of elements in @allowed_iovas array Done both, thanks Jason