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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b4763fbc711sm3233028a12.2.2025.08.20.16.39.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Aug 2025 16:39:09 -0700 (PDT) From: Amirreza Zarrabi Date: Wed, 20 Aug 2025 16:38:52 -0700 Subject: [PATCH v8 05/11] tee: increase TEE_MAX_ARG_SIZE to 4096 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250820-qcom-tee-using-tee-ss-without-mem-obj-v8-5-7066680f138a@oss.qualcomm.com> References: <20250820-qcom-tee-using-tee-ss-without-mem-obj-v8-0-7066680f138a@oss.qualcomm.com> In-Reply-To: <20250820-qcom-tee-using-tee-ss-without-mem-obj-v8-0-7066680f138a@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-Authority-Analysis: v=2.4 cv=ZJKOWX7b c=1 sm=1 tr=0 ts=68a65ca0 cx=c_pps a=Qgeoaf8Lrialg5Z894R3/Q==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=EUspDBNiAAAA:8 a=COk6AnOGAAAA:8 a=JCP0Puskdh6qvuzBaLcA:9 a=QEXdDO2ut3YA:10 a=x9snwWr2DeNwDh03kgHS:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-ORIG-GUID: A74P0c2zJ-iEwQ3InLdGp1gY-grN9RZ4 X-Proofpoint-GUID: A74P0c2zJ-iEwQ3InLdGp1gY-grN9RZ4 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODIwMDAxMyBTYWx0ZWRfX6dn3WTPYrsYw 38RmOgh4+XDeKTviJJgpHLn5E6uoNU4S7HdlzFQRyo988c3vWxqzW+fVglObApW0x9jlwiuwOVE r+BWjEFu/1IVmmCGfS/L0CKcuqan1WALVCmnK04B9sNJcUftMAW86J5Nb50g4ZUuBCBf9rP7O64 SIZQo8kB4ktrlR1+iZyft8KWgaLJVUx7QsmCtqW2rrgthLoAjmoh1UAy7zZ8xOVzFszRvWYHPEG qMdbkP/V5QOvk4cc8Y8sruB22Usec7velwcQy1LSSvtYcBgH8z3E6UEr/jpzi44Cud60/wy2XwQ 6LQ2x/JpoldJJ4F8DJi3LzK9VU2Ymr/I+AXcDW/ysG/VmGcBUja+LaVUiyWZWdw9PrtF6E3nPMG 6hRuikL0dHsB/4mMV4u/WWf4sb29fA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-20_06,2025-08-20_03,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 malwarescore=0 adultscore=0 suspectscore=0 lowpriorityscore=0 impostorscore=0 phishscore=0 clxscore=1015 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2508110000 definitions=main-2508200013 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 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