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 0A15C412C12 for ; Tue, 18 Aug 2026 07:56:08 +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=1787039770; cv=none; b=fpdwOoxo2obkL6OZNgfRYFer5DHuUXesklHNMNI2rY/qoXHHlAKdCczqSsG3nmXWeSXAeueX6IvPlm7t9psjl73HyIa+c2TBPEKfjv3fraS79ieUQ9PsrT16FaBquAwLBUz6QccysEsxrxfrYjb1i8QXUn4TBw9Jssf5DSWFYYY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787039770; c=relaxed/simple; bh=ZZA818poZeLPwJ66fKr9ucJ5v0H6fPiVOi/uQ8Os00E=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=UrM+siMhm39d0vXHkyi1JJV+TsLz6SO5cfbYEAsi8mAOktjql6ynukK8QCEDSt5qphA9yyzg3O0OvO7PKZPDYigV3SFKHiSbyoeeoRA57sG6fhimYiu+7lCDAL5cS7aWWA8WAgdf+dos+0tyKIOzX39kDpNPwVdVwht9ApiYlfI= 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=iU9NcURn; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=NiRXlmeN; 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="iU9NcURn"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="NiRXlmeN" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 67I7j7Wn489427 for ; Tue, 18 Aug 2026 07:56:07 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= 2ZmVT3jo06Z/YRGHNP2JLv1W/0cWF2K50EbC5H2nyOk=; b=iU9NcURn25ZfDbML BcLz4NLUI1h0cEFVZcz+/Arwhp5OuIO+1tddrsBfdkMkO/7IQx/lq9jneYRPatHm 03MEQcr1VK1yrpo3GGtq8j1hP0nZjeBTi01M5rMYHv4mnfNFurZDogoUhsghHO4R SfWN7znvtKenSgByl0P2bRmVg+4OvGdyv7UqvinPkYg4AOLtbPMM5eH4wCTiahcG PmipRkDGj0/DDQvFVIfd/eZyH/Jj80hC7vbIBvTQVQQPGg+iGufixMPoQpZ6sj3y 2mEih3btSyTmzkDtsLYIaDvnmk/jCBy7jH9xxDrALcH7mToBld3Ttq6hGHRdaUAD Wcn+JQ== Received: from mail-pg1-f200.google.com (mail-pg1-f200.google.com [209.85.215.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4g4g2p0ww3-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Tue, 18 Aug 2026 07:56:07 +0000 (GMT) Received: by mail-pg1-f200.google.com with SMTP id 41be03b00d2f7-cbe77d6864dso7369862a12.2 for ; Tue, 18 Aug 2026 00:56:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1787039766; x=1787644566; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=2ZmVT3jo06Z/YRGHNP2JLv1W/0cWF2K50EbC5H2nyOk=; b=NiRXlmeNvhPVLPKHi96u+RISZ70lrGvV4i0KckhqeJ1ImbUpR+hOmBUUqhEbkvp3jz 4mQT5vqhbGfHl3xOMG723QbRIPiLixg//CvaXHGWw/IdK4y9GnALi5LsAFJhzRXh3ayW FAgQbaOWhHYsXb9kC5FtkwX944CyG0JQyKza9nqJMJVo/8W4lSb+i6H+QMRex5Ep7hSG 8atsDcqwr2H79sQYowzeVJmlXaw6uumIf30Edo2uLSYdWPkS0EXMdFPI3SflW8Lnz6W5 Z8VExCLa5tGMtw7CgKARVwnl48c0lqHroKhaTlLFN4iJU4HBYzgKDC5y3GYJXsDQcRy8 7Esg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787039766; x=1787644566; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=2ZmVT3jo06Z/YRGHNP2JLv1W/0cWF2K50EbC5H2nyOk=; b=siG+Itr1tqP0GZqlxCd7L1xRCizQlvVlvH228aM0qLipU9KjFfWWfnBUUYdYCPEMUW oR7+nNJZoR+4A1QCsmIO+nVks68Oggq7SBlPmEL592+/mD3549DQUn9Y92+13nL1QdGM tjmD5oJCQ+WlQNMzhrWTPWTn2XjZsLxQmSwXPU1/+MzKI8o4kBfVGnsk+VYXp/RZ+kA4 fMhnUh9mCTihNFLQ9v3h6sfQbVgUO6c0yVaTUOlIHDrK/wJHkU9tnaIJ6luZb/IU8Iz2 eaFQqM7+aXHGdytpb+o9hrLcDVUDbmq4I1AhmBVMspsE4F0mbTcWQ6ns0TGg91L+yR1H GU+A== X-Forwarded-Encrypted: i=1; AHgh+Rptaa99uTThq25CRoqLm0KRNdAGyUcIIgPEQUvIgJZjbN3vrpJ1i/gxZavRORO/o0zwxzKcBdcsnhHksZw=@vger.kernel.org X-Gm-Message-State: AOJu0Yxqvq1AaN2LkIateyW4lmsrB4bw5mjwrhMMK7Cr+eOTNU3IrQpS WUMz9T1LqgBHny799EQc6en1JaA3pMbf3Vqj8azmIfBafnoP7bzvzfVFqe2FzFFLU3ebe+Dko2x glF2wLO14njIynQk4b+4l3CRazIhLuQ1ndS5ZCU694ElPOtmbqL0VCXkauXFltE8zLr4= X-Gm-Gg: AR+sD12/WPsjeOLoLIFG2LN89SzfsbDwTY0TeaNKdJIKQ71lNojlTepbAScdfHQrVvx 9gNjkZVXKLiKDQc5Q8DOl2erfAi/vIa7hqZtDOYKK4E6p5NKjGVdFRK8zmFvcxUzU4KuioOqQG0 2Thyz4G/TLvLSwiveMKCcQ442bpzXfPrqV22ZCwsSm1HXg8aHgjhRJ/Uao8z0BHrFNi+lcLNdu+ K7kJ8oitxtw81KqNmlH9yFazwmvP0ZAcseRCmB7kyEPEGGbG5SQvlWSXN71Vz5sjeqH/4Fe4/sD Dne9EAiz1hkBQbt1GriORVnZOQqfZmeEYnTz608Y2UUwfANhPdDQdOMefNudSOA9PdimwadxNAx z2viLuU+Dp8CCqs5bW+DybHvMTjGtSiLwc5w= X-Received: by 2002:a05:6a20:b598:b0:3bf:b1d3:393e with SMTP id adf61e73a8af0-3cc719c7b62mr39663719637.2.1787039766539; Tue, 18 Aug 2026 00:56:06 -0700 (PDT) X-Received: by 2002:a05:6a20:b598:b0:3bf:b1d3:393e with SMTP id adf61e73a8af0-3cc719c7b62mr39663651637.2.1787039766180; Tue, 18 Aug 2026 00:56:06 -0700 (PDT) Received: from [192.168.0.172] ([183.83.138.247]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-14152ea340csm13242759c88.0.2026.08.18.00.56.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 18 Aug 2026 00:56:05 -0700 (PDT) Message-ID: <8a9b417f-11cf-4dd8-af3f-494afa38b868@oss.qualcomm.com> Date: Tue, 18 Aug 2026 13:25:58 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] media: venus: Fix iova allocation from restrict region To: Dmitry Baryshkov , Vishnu Reddy Cc: Dikshita Agarwal , Abhinav Kumar , Bryan O'Donoghue , Mauro Carvalho Chehab , Hans Verkuil , Stefan Schmidt , Stanimir Varbanov , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org References: <20260812-reserve_iova_in_driver-v1-0-ed62f801275c@oss.qualcomm.com> <20260812-reserve_iova_in_driver-v1-2-ed62f801275c@oss.qualcomm.com> Content-Language: en-US From: Vikash Garodia In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: pfIA0AkpaEvTCWcCK53EBJ1_U2yQXlGe X-Proofpoint-Spam-Info: AW1haW4tMjYwODE4MDA1NyBTYWx0ZWRfX8h8f9+TZc7aQ OfrvOlXXdZ19gm9yQrIxHb9OlkLpBRaoG0rGKk9wxKaIvfa/Tr3SYFcLVuG/Wap0ceVtC01nmCG huawENJjlFc297T6LeG9uaOw3TXexDY= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE4MDA1NyBTYWx0ZWRfX9vSVeoupRTtS QK5Wy+IswNmF+Rfqh++SdL6fsqUDrFGHJrLsT5Iuzb3mItHAVOVLp9fHjO//2AaVjDgEaoC2Qtu T2OyIgmkKYA5Lwqpmw1yS1qtagEzpTU9MuqDN1BrvY6eKW3Pyb+2dmB+w0rZtWxszWDRh4hVW/o wydQ1kHxTy57mCiojzH2hdDuSn/ItkXO4Hqbfo6EVdFsVg3CI24htTv6HxzwJiZ71du4K7Jp2l+ 9rU7G1OfIv8YDEoEz7X7ga28JWRHx5AL64vOFhXkoCWvfUNf5CJyN2v05hqCCwKBJeHn3hMcxJ/ fgEr/AXvmH1w5ZUsQJnnzcoRUSEOTY4JbUUDcYQomAVOXT1zDf72UjixypqoFg/saDggc9sQjFB 6AlsC2kMfnnoDEEcaBC6iLkXa+cDFjxvcsbOKQzaQWhpB2yAv3tYqK4mrGxICUY4aMWoNBQ1fjf 6GUi4yk/qhKmellPF1g== X-Proofpoint-ORIG-GUID: pfIA0AkpaEvTCWcCK53EBJ1_U2yQXlGe X-Authority-Analysis: v=2.4 cv=bfRbluPB c=1 sm=1 tr=0 ts=6a841017 cx=c_pps a=oF/VQ+ItUULfLr/lQ2/icg==:117 a=nRfyoPPwyR/Y6OrExC/i1g==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=IgWHIWh_6YLybfuA14QA:9 a=QEXdDO2ut3YA:10 a=3WC7DwWrALyhR5TkjVHa:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-17_04,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 malwarescore=0 lowpriorityscore=0 phishscore=0 impostorscore=0 bulkscore=0 spamscore=0 adultscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608180057 On 8/18/2026 12:34 PM, Dmitry Baryshkov wrote: > On Wed, Aug 12, 2026 at 04:25:59PM +0530, Vishnu Reddy wrote: >> The VPU issues DMA through several SMMU streams, and the hardware does >> not give every stream the same addressable range. The non-pixel stream >> cannot address the low 600MB of IOVA space, while the pixel stream can >> address the full range: >> +-----------------------------------------------------------+ >> | non-pixel stream addressable range (600 MB - 3.5 GB) | >> | 0x25800000 - 0xe0000000 | >> +-----------------------------------------------------------+ >> | pixel stream addressable range (0 - 3.5 GB) | >> | 0x00000000 - 0xe0000000 | >> +-----------------------------------------------------------+ > Does this split apply to all generations of Venus? We support MSM8916, > for example. There has been work to enable MSM8974. Yes, applicable for all VPUs Regards, Vikash