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* SWDEV-558848 - Move DRM calls to thunk for better abstraction * Use thunk device handle instead of drm inside agent * Update IPC functions with new thunk calls * create hsaKmtHandleImport interface to support ipc * Reset metadata inside hsaKmtMemHandleFree * remove whitespaces and NULL usage * Add thunk apis to libhsakmt.ver * Add comments to new structs in thunk * Minor fixes to declarations * resolve merge conflicts in amd_kfd_driver --------- Co-authored-by: Rahul Manocha <rmanocha@amd.com>