what we really want is a read or write that is guaranteed to be 64 bits
at a time, atomic64 operations are supported on all architectures
Signed-off-by: NTao Zhou <tao.zhou1@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>