On Wed, Oct 09, 2024 at 09:38:19AM -0700, Nicolin Chen wrote: > With a vIOMMU object, use space can flush any IOMMU related cache that can > be directed using the vIOMMU object. It is similar to IOMMU_HWPT_INVALIDATE > uAPI, but can cover a wider range than IOTLB, e.g. device/desciprtor cache. > > Allow hwpt_id of the iommu_hwpt_invalidate structure to carry a viommu_id, > and reuse the IOMMU_HWPT_INVALIDATE uAPI for vIOMMU invalidations. Drivers > can define different structures for vIOMMU invalidations v.s. HWPT ones. > > Update the uAPI, kdoc, and selftest case accordingly. > > Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx> > --- > include/uapi/linux/iommufd.h | 9 ++++--- > drivers/iommu/iommufd/hw_pagetable.c | 32 +++++++++++++++++++------ > tools/testing/selftests/iommu/iommufd.c | 4 ++-- > 3 files changed, 33 insertions(+), 12 deletions(-) Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Jason
