On Mon, May 26, 2025 at 11:56:50PM -0700, Amirreza Zarrabi wrote:
> Increase TEE_MAX_ARG_SIZE to accommodate worst-case scenarios where
> additional buffer space is required to pass all arguments to TEE.
> This change is necessary for upcoming support for Qualcomm TEE, which
> requires a larger buffer for argument marshaling.
>
> Signed-off-by: Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com>
> ---
> include/uapi/linux/tee.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Reviewed-by: Sumit Garg <sumit.garg@oss.qualcomm.com>
-Sumit
>
> diff --git a/include/uapi/linux/tee.h b/include/uapi/linux/tee.h
> index 441d97add53f..71a365afb89b 100644
> --- a/include/uapi/linux/tee.h
> +++ b/include/uapi/linux/tee.h
> @@ -42,7 +42,7 @@
> #define TEE_IOC_MAGIC 0xa4
> #define TEE_IOC_BASE 0
>
> -#define TEE_MAX_ARG_SIZE 1024
> +#define TEE_MAX_ARG_SIZE 4096
>
> #define TEE_GEN_CAP_GP (1 << 0)/* GlobalPlatform compliant TEE */
> #define TEE_GEN_CAP_PRIVILEGED (1 << 1)/* Privileged device (for supplicant) */
>
> --
> 2.34.1
>
>