From: Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com>
To: "Jens Wiklander" <jens.wiklander@linaro.org>,
"Sumit Garg" <sumit.garg@kernel.org>,
"Bjorn Andersson" <andersson@kernel.org>,
"Konrad Dybcio" <konradybcio@kernel.org>,
"Bartosz Golaszewski" <bartosz.golaszewski@linaro.org>,
"Apurupa Pattapu" <quic_apurupa@quicinc.com>,
"Kees Cook" <kees@kernel.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Christian König" <christian.koenig@amd.com>
Cc: Harshal Dev <quic_hdev@quicinc.com>,
linux-arm-msm@vger.kernel.org, op-tee@lists.trustedfirmware.org,
linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org,
dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org,
linux-doc@vger.kernel.org,
Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com>,
Sumit Garg <sumit.garg@oss.qualcomm.com>
Subject: [PATCH v6 05/12] tee: increase TEE_MAX_ARG_SIZE to 4096
Date: Sun, 13 Jul 2025 17:49:17 -0700 [thread overview]
Message-ID: <20250713-qcom-tee-using-tee-ss-without-mem-obj-v6-5-697fb7d41c36@oss.qualcomm.com> (raw)
In-Reply-To: <20250713-qcom-tee-using-tee-ss-without-mem-obj-v6-0-697fb7d41c36@oss.qualcomm.com>
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 <sumit.garg@oss.qualcomm.com>
Tested-by: Harshal Dev <quic_hdev@quicinc.com>
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 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
next prev parent reply other threads:[~2025-07-14 0:50 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-14 0:49 [PATCH v6 00/12] Trusted Execution Environment (TEE) driver for Qualcomm TEE (QTEE) Amirreza Zarrabi
2025-07-14 0:49 ` [PATCH v6 01/12] tee: allow a driver to allocate a tee_device without a pool Amirreza Zarrabi
2025-07-14 0:49 ` [PATCH v6 02/12] tee: add close_context to TEE driver operation Amirreza Zarrabi
2025-07-14 0:49 ` [PATCH v6 03/12] tee: add TEE_IOCTL_PARAM_ATTR_TYPE_UBUF Amirreza Zarrabi
2025-07-14 0:49 ` [PATCH v6 04/12] tee: add TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF Amirreza Zarrabi
2025-07-14 0:49 ` Amirreza Zarrabi [this message]
2025-07-14 0:49 ` [PATCH v6 06/12] firmware: qcom: scm: add support for object invocation Amirreza Zarrabi
2025-07-14 0:49 ` [PATCH v6 07/12] firmware: qcom: scm: remove unused arguments to the shm_brige Amirreza Zarrabi
2025-07-14 0:49 ` [PATCH v6 08/12] firmware: qcom: tzmem: export shm_bridge create/delete Amirreza Zarrabi
2025-07-14 8:22 ` kernel test robot
2025-07-14 0:49 ` [PATCH v6 09/12] tee: add Qualcomm TEE driver Amirreza Zarrabi
2025-07-14 18:49 ` kernel test robot
2025-07-21 10:40 ` Sumit Garg
2025-07-24 3:18 ` Amirreza Zarrabi
2025-07-14 0:49 ` [PATCH v6 10/12] qcomtee: add primordial object Amirreza Zarrabi
2025-07-14 0:49 ` [PATCH v6 11/12] qcomtee: enable TEE_IOC_SHM_ALLOC ioctl Amirreza Zarrabi
2025-07-14 0:49 ` [PATCH v6 12/12] Documentation: tee: Add Qualcomm TEE driver Amirreza Zarrabi
2025-07-21 10:41 ` Sumit Garg
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