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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-25c3b304f76sm2962275ad.130.2025.09.10.20.41.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Sep 2025 20:41:34 -0700 (PDT) From: Amirreza Zarrabi Date: Wed, 10 Sep 2025 20:41:20 -0700 Subject: [PATCH v11 07/11] tee: increase TEE_MAX_ARG_SIZE to 4096 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250910-qcom-tee-using-tee-ss-without-mem-obj-v11-7-520e867b3d74@oss.qualcomm.com> References: <20250910-qcom-tee-using-tee-ss-without-mem-obj-v11-0-520e867b3d74@oss.qualcomm.com> In-Reply-To: <20250910-qcom-tee-using-tee-ss-without-mem-obj-v11-0-520e867b3d74@oss.qualcomm.com> To: Jens Wiklander , Sumit Garg , Bjorn Andersson , Konrad Dybcio , Bartosz Golaszewski , Apurupa Pattapu , Kees Cook , "Gustavo A. R. Silva" , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= Cc: Harshal Dev , 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 , Sumit Garg X-Mailer: b4 0.13.0 X-Proofpoint-ORIG-GUID: QtNVJr1T2Ycxt_yzRnCG6LkQ9YEcD66Z X-Proofpoint-GUID: QtNVJr1T2Ycxt_yzRnCG6LkQ9YEcD66Z X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTA2MDAxOCBTYWx0ZWRfX5apZImRAF6F8 JNQmQ31rffjG2Sn6HLPQs69sRAAHqucyRvbQ2PuPabgfe53hynVB5JbAtUrRjn7nhIby8Zn+N1M qq0KMk2JDXX2ngXOX1Qe8d9AJKnbhAk9MV36wcdYjDRrbIF5bNfCWzQzvxMmqkO70Pgl+k5hM4x XyU7SRS7fKzrwUNFlmJs3qfpg0qz31IToOfENFwAsv/g5jmJaYyhsYAcWFcDn7CCwvuvZabb5QO Lcz1Eimm01eFew8P4U52pYrUZRiL54FRNR5Re7iTalSXxQKTIjsBQYl+viVERO/Dn/c54E6d3Os 7xe2kvC1H1rFLmhtwzUtOWTNEOrB+xDAh70hg7ioSu3YBTUEXcbQBcpUPsnGHvZ1dnzy5IVb+xk eEFiDPBt X-Authority-Analysis: v=2.4 cv=G4kcE8k5 c=1 sm=1 tr=0 ts=68c244f1 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=EUspDBNiAAAA:8 a=COk6AnOGAAAA:8 a=JCP0Puskdh6qvuzBaLcA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-10_04,2025-09-10_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 bulkscore=0 suspectscore=0 clxscore=1015 malwarescore=0 adultscore=0 impostorscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509060018 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 Tested-by: Harshal Dev Signed-off-by: Amirreza Zarrabi --- 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