From: Volodymyr Babchuk vlad.babchuk@gmail.com
In order to register a shared buffer in TEE, we need accessor function that return list of pages for that buffer.
Signed-off-by: Volodymyr Babchuk vlad.babchuk@gmail.com ---
* Removed check for validity of num_pages pointer. As Yury Norov pointed, this check can lead to mistakes in the future.
--- include/linux/tee_drv.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h index 0d7f2a5..5489c38 100644 --- a/include/linux/tee_drv.h +++ b/include/linux/tee_drv.h @@ -394,6 +394,19 @@ static inline size_t tee_shm_get_size(struct tee_shm *shm) }
/** + * tee_shm_get_pages() - Get list of pages that hold shared buffer + * @shm: Shared memory handle + * @num_pages: Number of pages will be stored there + * @returns pointer to pages array + */ +static inline struct page **tee_shm_get_pages(struct tee_shm *shm, + size_t *num_pages) +{ + *num_pages = shm->num_pages; + return shm->pages; +} + +/** * tee_shm_get_page_offset() - Get shared buffer offset from page start * @shm: Shared memory handle * @returns page offset of shared buffer