[PATCH v11 07/11] tee: increase TEE_MAX_ARG_SIZE to 4096
From: Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com>
Date: 2025-09-11 03:41:38
Also in:
dri-devel, linux-arm-msm, linux-hardening, lkml, op-tee
Subsystem:
tee subsystem, the rest · Maintainers:
Jens Wiklander, Linus Torvalds
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. Reviewed-by: Sumit Garg <redacted> Tested-by: Harshal Dev <redacted> Signed-off-by: Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com> --- include/uapi/linux/tee.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/uapi/linux/tee.h b/include/uapi/linux/tee.h
index 9abb0f299549..a5466b503bfe 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