From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B8E172F2918 for ; Wed, 13 Aug 2025 10:07:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755079626; cv=none; b=D25WyHeTqwNndTr4di0ALdo9tvINn3j+enF5onfEVj4yJYkye3Sp/8bYKRUH2lZ27qmYvBksxy+uvJMluaJ3z4EP2M9cCFTexyO8I8WA3BoyeZGucmM25bkzL1R9IRcOpA3uS13U+y8WK3yhgs+gNgCUEkZ0u+9qgyMexX7LgC4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755079626; c=relaxed/simple; bh=CRPKsVAhqXLyl5B9IWZbInaWZbGzzt5vGVn6BvQJQis=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=lCDa4DsrRTsMZW1szPBG4qa3wFD86685pBYjn1YWXD+6x3SlHzUDHlJFeX/5/wY9D6flvjopBm5BFr9j6ASeo3VOutud/YoAQtdwN1srE/VvgHlOzFihwNDBL3+yQxNo4xUGZD6HvXtXCRQxU+UoQjVCDTWg2CNeEUV/JBLnHIY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=TPoeXl4I; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="TPoeXl4I" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 57D6mNdQ008768 for ; Wed, 13 Aug 2025 10:07:03 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= lo/uyCg8eI45CIAczel8wExuTSXtA1VT9FQTS1gDCiI=; b=TPoeXl4IjXVD2YQV 7PgGj9r/3vk0QoRPKTnaIosHjf093O/ALUsVq61RqOpmDap4f+w999tmLJ9urEst Nl7bDUeKgmBth6OefCysUvALMPvErT66ikBQ3GRPjzM0c21pZfj6H7pUbnLkUlp2 gzHM4yEy5pzomSygB2CLW5ggaKuY8TiOJmkAMhHp+jfz5z0el9m1cbsm+IaaDiWa Y1R8WWMZwz84bWml2GpnvdbBo3sb48jZU8MDTVBYu6AKnzDOtm5C48/hM/iXu/Oo sxNah/WcqjrvA5pbCeYWSOeMIYin4eFMs4IcVl3hkQQnrhkTGpE1/sHlh5WWjSMJ wFZHoQ== Received: from mail-qt1-f198.google.com (mail-qt1-f198.google.com [209.85.160.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 48fem4fbea-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Wed, 13 Aug 2025 10:07:03 +0000 (GMT) Received: by mail-qt1-f198.google.com with SMTP id d75a77b69052e-4b0dfcd82ebso5938431cf.0 for ; Wed, 13 Aug 2025 03:07:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755079623; x=1755684423; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=lo/uyCg8eI45CIAczel8wExuTSXtA1VT9FQTS1gDCiI=; b=XO5A2cOG+nnKdqXH319CSj9SgfyWbfHHnPYuU4fApuudIX/+JAqp6FUOqXvct8USMK rAGVZor0lcPdWuvT/U8mUD/jafXz2lgJTAcZDPbc1vzi6rp/99HOjg30G0PA0PueEXfX SvLVHpmuleyiu8yuDCquME9FC6SOsh8Za+blcB7IZReoNFmic1CIxWjF1CX2/YJZm9zK 90+qzWp2G9zsT4LwWxaSjFHiqcImft8ShTrXNtHPF+68AxZzEqQ7zkzDi25VA7ImuOy/ s+GWMBxU8H6q+7oaN08W2MrHlkWHJIXX6UC54QSHm1CiwTAjk6QkhaixxqBhT1cTKN7I A0Zg== X-Forwarded-Encrypted: i=1; AJvYcCUyE2cZvYnStFmjMquoLwxPJSsihT6wLAxuLar1wuXCiIxwinoHnBL0Zwnyw/A1gd+togNY4Fe/AZ0yBQV6@vger.kernel.org X-Gm-Message-State: AOJu0YzCqNIuWmqaIa1/BOB3iQhE0Arrm9IMJHNas5bfAaVB8IBzEdMo /D1lr2zAbxHaRIyeNU3aNmrpwWGA/YAyunySLYwjYnQDMA48tf1redtSDpDNbDVM6FFpyKqWJ3J X+zO2tuyTIinokdf7v4SqwPXuQkexGBibGKtnxgjTr2sNxyTL/Bd3z4CmQ96LsDNOjT7u X-Gm-Gg: ASbGncsZPgMd7JF9xKd0tTtpI9LvOgC5j8lvG4ZmlDvp7Mx+hv3LPxhvbDAn5/dO3/1 ER/pXIQ+eAAniPndyFocU7Iw0s6TFV2xmiRzVjfqqxhfNmuvpT7XiDyACTo8sV+prk3gsVW0mzj 6nrclafMwic9l4P/EMSgvpgDx8Gc1rIFbSQlONQwiTT7nn+l4pSylIqdBmBWJCnIiwdmdrcE1zL SaLTx1uN+OuROwHYdbPcIT0FILyY3DIXlZuUDnCrqDz4h/YdAMKGrdtnC+dPrE4mS9M3hyQJfJk gnDQOTqC26BxqUNOOoJA6S7y5A5fJ9o5Ozfo5lRU+qdPWxJHZgSDYl4FdQ/kxMspa+cIc5V/4z7 pohYvTmr9gQbtx+2/8w== X-Received: by 2002:ac8:5dce:0:b0:4ab:609f:d7d1 with SMTP id d75a77b69052e-4b0fc6cbd31mr13706721cf.4.1755079622734; Wed, 13 Aug 2025 03:07:02 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEbEx/52bIrz3cKGljrcyVxad9pOt/IN1rRcYfZiJuhcUb6gPtWuoMusDjEvu/er5MYTpmlKg== X-Received: by 2002:ac8:5dce:0:b0:4ab:609f:d7d1 with SMTP id d75a77b69052e-4b0fc6cbd31mr13706491cf.4.1755079622218; Wed, 13 Aug 2025 03:07:02 -0700 (PDT) Received: from [192.168.43.16] (078088045245.garwolin.vectranet.pl. [78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-af91a0a3b6csm2371260366b.48.2025.08.13.03.06.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 13 Aug 2025 03:07:01 -0700 (PDT) Message-ID: Date: Wed, 13 Aug 2025 12:06:58 +0200 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 07/11] firmware: qcom: tzmem: export shm_bridge create/delete 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 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-v7-7-ce7a1a774803@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20250812-qcom-tee-using-tee-ss-without-mem-obj-v7-7-ce7a1a774803@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: FCwwu0-pf1Xhby8A82KNVqswkN0Gp7UY X-Proofpoint-ORIG-GUID: FCwwu0-pf1Xhby8A82KNVqswkN0Gp7UY X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODExMDA2OCBTYWx0ZWRfX7A4T7HK0rvtk qIbKSF17x8STaJsCrIu3MzAf+53blcygJD71AV1Jr6NlPhMTCXerZhQEAGKqioKaaSa/5EGeXYF wZFQsANg9iRmn/yA4ToxLBjBV9pTCNSNC+DHaqCHIs5poJfeWCRfFIrfwWFCkw854ypaKPVoB33 btuHYGvIAiiBKXtllRI5yyc77iwKo/HRfVHO88Ip+BG1vMexctJjSIAOUbKMNB0N/t5l/DTshyE OZpk9oy+sstBHN47YhAUIsx7Gn2tdJblVjYg61JfDPFkZqfs8CpzbJrYQRbh4LadBRP7PNDT7Hk mpxUt616C0qbk8otfueezZA2t4M9Ihtg/XwVGYXykH2FkJqq/g04uVS/FpHe2XizE46fc2nxPqX MKQAyK8N X-Authority-Analysis: v=2.4 cv=YMafyQGx c=1 sm=1 tr=0 ts=689c63c7 cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=sWKEhP36mHoA:10 a=KKAkSRfTAAAA:8 a=COk6AnOGAAAA:8 a=EUspDBNiAAAA:8 a=clTIM29CJtwRRT_IFxsA:9 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 a=dawVfQjAaf238kedN5IG:22 a=cvBusfyB2V15izCimMoJ:22 a=TjNXssC_j7lpFel5tvFf:22 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 bulkscore=0 clxscore=1015 priorityscore=1501 spamscore=0 suspectscore=0 adultscore=0 impostorscore=0 malwarescore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508110068 On 8/13/25 2:35 AM, Amirreza Zarrabi wrote: > Anyone with access to contiguous physical memory should be able to > share memory with QTEE using shm_bridge. > > Tested-by: Neil Armstrong > Tested-by: Harshal Dev > Signed-off-by: Amirreza Zarrabi > --- Hm, I thought the idea for the tzmem allocator was to abstract these operations to prevent users from shooting themselves in the foot, and this seems to be circumventing that.. Konrad