* @num_pages: number of locked pages
* @dmabuf: dmabuf used to for exporting to user space
* @flags: defined by TEE_SHM_* in tee_drv.h
* @num_pages: number of locked pages
* @dmabuf: dmabuf used to for exporting to user space
* @flags: defined by TEE_SHM_* in tee_drv.h