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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-af91a0a3375sm2366142566b.41.2025.08.13.03.00.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 13 Aug 2025 03:00:50 -0700 (PDT) Message-ID: <3ec0a8d0-7900-45bd-b0d3-90ee8ca7730c@oss.qualcomm.com> Date: Wed, 13 Aug 2025 12:00:46 +0200 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 10/11] qcomtee: enable TEE_IOC_SHM_ALLOC ioctl To: Amirreza Zarrabi , 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, Neil Armstrong , Sumit Garg References: <20250812-qcom-tee-using-tee-ss-without-mem-obj-v7-0-ce7a1a774803@oss.qualcomm.com> <20250812-qcom-tee-using-tee-ss-without-mem-obj-v7-10-ce7a1a774803@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20250812-qcom-tee-using-tee-ss-without-mem-obj-v7-10-ce7a1a774803@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=G6EcE8k5 c=1 sm=1 tr=0 ts=689c6254 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=KKAkSRfTAAAA:8 a=EUspDBNiAAAA:8 a=COk6AnOGAAAA:8 a=WNCivIMphfMWkbBb3CYA:9 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 a=cvBusfyB2V15izCimMoJ:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODExMDA5NyBTYWx0ZWRfX4EyQo2IuT58W ZJQC1YhPjThqURGEsvJR6x31j8ZJIKvh5YVGwm9MunUxcp4EhtbKNDEXzqDx2dAgLsIvcu+sovO pqga6Q9UvzvpjL+kc+Z2QI4qZB8vxadh1ipIn5fbo65uisMv68j8CdSCvInw3AZ2gzFNc48zptw MwRc2sRUxB8auHvQX1cVzWOc+ip8wQi/KUyZoeolJTxb7Y/IVMx86Xwg5CiGOakHB1ITP+KIg/q 0M1CMv+qbtaO2pjcSRyi3MuKX3NBriPhnWivfzqn7wxy7LQ+Rg2Fmwyh5BgBKtcy7q69GoN3hnK Enzv5VWRt/9cRaKjB3yoZlmUPvn7BQ9mPvkv+dekpFpb/UPGAUbNcuajYvyQKAZjlArU46YGAE5 3L/0pfur X-Proofpoint-ORIG-GUID: o3gViFat4M4wVasZ-5Nj-DOcfjA2Tztb X-Proofpoint-GUID: o3gViFat4M4wVasZ-5Nj-DOcfjA2Tztb 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=2025-08-12_08,2025-08-11_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 priorityscore=1501 bulkscore=0 spamscore=0 phishscore=0 malwarescore=0 adultscore=0 impostorscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508110097 On 8/13/25 2:35 AM, Amirreza Zarrabi wrote: > Enable userspace to allocate shared memory with QTEE. Since > QTEE handles shared memory as object, a wrapper is implemented > to represent tee_shm as an object. The shared memory identifier, > obtained through TEE_IOC_SHM_ALLOC, is transferred to the driver using > TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF_INPUT/OUTPUT. > > Tested-by: Neil Armstrong > Acked-by: Sumit Garg > Tested-by: Harshal Dev > Signed-off-by: Amirreza Zarrabi > --- [...] > +/* Mapping information format as expected by QTEE. */ > +struct qcomtee_mapping_info { > + u64 paddr; > + u64 len; > + u32 perms; > +} __packed; Please use types with explicit endianness, e.g. __le32. I'm assuming TZ will always be little-endian, regardless of the host OS Konrad