On Sat, May 17, 2025 at 08:21:37PM -0700, Nicolin Chen wrote: > The hw_info uAPI will support a bidirectional data_type field that can be > used as an input field for user space to request for a specific info data. > > To prepare for the uAPI update, change the iommu layer first: > - Add a new IOMMU_HW_INFO_TYPE_DEFAULT as an input, for which driver can > output its only (or firstly) supported type > - Update the kdoc accordingly > - Roll out the type validation in the existing drivers > > Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx> > --- > include/linux/iommu.h | 6 ++++-- > include/uapi/linux/iommufd.h | 4 +++- > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c | 4 ++++ > drivers/iommu/intel/iommu.c | 4 ++++ > drivers/iommu/iommufd/device.c | 3 +++ > drivers/iommu/iommufd/selftest.c | 4 ++++ > 6 files changed, 22 insertions(+), 3 deletions(-) Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Jason
