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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-742a970954asm18037286b3a.46.2025.05.26.23.57.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 May 2025 23:57:22 -0700 (PDT) From: Amirreza Zarrabi Date: Mon, 26 May 2025 23:56:50 -0700 Subject: [PATCH v5 05/12] tee: increase TEE_MAX_ARG_SIZE to 4096 Precedence: bulk X-Mailing-List: linux-kernel@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: <20250526-qcom-tee-using-tee-ss-without-mem-obj-v5-5-024e3221b0b9@oss.qualcomm.com> References: <20250526-qcom-tee-using-tee-ss-without-mem-obj-v5-0-024e3221b0b9@oss.qualcomm.com> In-Reply-To: <20250526-qcom-tee-using-tee-ss-without-mem-obj-v5-0-024e3221b0b9@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 X-Mailer: b4 0.13.0 X-Proofpoint-GUID: AlUwdGYSWfVK78d_cF-cMWPuP3GURi6w X-Authority-Analysis: v=2.4 cv=E9nNpbdl c=1 sm=1 tr=0 ts=68356254 cx=c_pps a=mDZGXZTwRPZaeRUbqKGCBw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=dt9VzEwgFbYA:10 a=EUspDBNiAAAA:8 a=JCP0Puskdh6qvuzBaLcA:9 a=QEXdDO2ut3YA:10 a=zc0IvFSfCIW2DFIPzwfm:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTI3MDA1NCBTYWx0ZWRfXz2DaOR/ykUO/ Mi0oaVqdn0z3N1ScuW+gC7XolZvZ1j4eJz4koYkCaWdtDP9XSt/rRxlKlOvDOBgQVWpph6XDKUn bzOUfBoAWeG7xsS1zNqbv93R8MwGsYjGkQBhStIk9vCwI/blWjF5cskyooRg4Imxu4vwagxjFVK XbjxrOKvIXDK2NobayxxoTgawi9r5NbOeCyckOnaLFzDTa6fxnNYlTFO2qKAdZuLs2gX1YpfhfH MkEC+N3zlFoWgq89QyDtfKVZWyzUYcH3fduarj5ZADyLqv+H52kwgQFyJKyYMTkRiccKkpsq8lr BllCn1aPlvCbWdKHCCMLbMOpdB+vPCydYz0QjSxquY1ZHFm9jt+fEIEiZQ41dyErxhTbeEz/p5/ AMDfusaaScs8Na9HeIDxEXk39UeEECfVda6uL0JsXJFoAnjk4FdLg7vFOrDDeBHXoo2PRl76 X-Proofpoint-ORIG-GUID: AlUwdGYSWfVK78d_cF-cMWPuP3GURi6w X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-05-27_03,2025-05-26_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 mlxlogscore=936 spamscore=0 malwarescore=0 priorityscore=1501 adultscore=0 phishscore=0 impostorscore=0 lowpriorityscore=0 suspectscore=0 clxscore=1015 bulkscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505160000 definitions=main-2505270054 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 --- 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