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This provides all the infrastructure to enable dirty tracking if the
hardware has the capability and domain alloc request for it.
Also, add a device_iommu_capable() check in iommufd core for
IOMMU_CAP_DIRTY_TRACKING before we request a user domain with dirty
tracking support.
Please note, we still report no support for IOMMU_CAP_DIRTY_TRACKING
as it will finally be enabled in a subsequent patch.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Link: https://lore.kernel.org/r/20240703101604.2576-5-shameerali.kolothum.thodi@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
eb054d67b2