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Wed, 12 Nov 2025 23:34:29 -0800 Received: from Asurada-Nvidia (10.127.8.11) by mail.nvidia.com (10.129.68.9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20 via Frontend Transport; Wed, 12 Nov 2025 23:34:28 -0800 Date: Wed, 12 Nov 2025 23:34:27 -0800 From: Nicolin Chen To: Shuai Xue CC: Jason Gunthorpe , Alex Williamson , Christian =?iso-8859-1?Q?K=F6nig?= , , , Joerg Roedel , Kevin Tian , , , , , Robin Murphy , "Shuah Khan" , Sumit Semwal , Will Deacon , Krishnakant Jaju , Leon Romanovsky , Matt Ochs , , Simona Vetter , Vivek Kasireddy , Xu Yilun Subject: Re: [PATCH 0/9] Initial DMABUF support for iommufd Message-ID: References: <0-v1-af84a3ab44f5+f68-iommufd_buf_jgg@nvidia.com> <29f0cddc-3c23-4ab1-92d9-8c9918ddc187@linux.alibaba.com> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <29f0cddc-3c23-4ab1-92d9-8c9918ddc187@linux.alibaba.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FF:EE_|CY8PR12MB7683:EE_ X-MS-Office365-Filtering-Correlation-Id: 86ce6efc-9f1a-4dc8-444c-08de22871df5 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|36860700013|7416014|1800799024; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Nov 2025 07:34:44.9865 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 86ce6efc-9f1a-4dc8-444c-08de22871df5 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0FF.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB7683 On Thu, Nov 13, 2025 at 02:33:01PM +0800, Shuai Xue wrote: > Could you share more details for testing?, e.g. QEMU cmdline, > Guest kernel version. My v6.8 and v6.14 kernels can boot cleanly in the VM. vm_image=PATH-to-FILE e1000_rom=PATH-to-FILE qemu-system-aarch64 \ -object iommufd,id=iommufd0 \ -machine hmat=on -machine virt,accel=kvm,gic-version=3,ras=on,highmem-mmio-size=4T \ -cpu host -smp cpus=62 -m size=16G,slots=2,maxmem=256G -nographic \ -object memory-backend-ram,size=8G,id=m0 -object memory-backend-ram,size=8G,id=m1 \ -numa node,memdev=m0,cpus=0-61,nodeid=0 -numa node,memdev=m1,nodeid=1 \ -numa node,nodeid=2 -numa node,nodeid=3 -numa node,nodeid=4 -numa node,nodeid=5 \ -numa node,nodeid=6 -numa node,nodeid=7 -numa node,nodeid=8 -numa node,nodeid=9 \ -device pxb-pcie,id=pcie.1,bus_nr=1,bus=pcie.0 -device arm-smmuv3,primary-bus=pcie.1,id=smmuv3.1,accel=on,ats=on,ril=off,pasid=on,oas=48 \ -device pcie-root-port,id=pcie.port1,bus=pcie.1,chassis=1,io-reserve=0 \ -device vfio-pci-nohotplug,host=0009:01:00.0,bus=pcie.port1,rombar=0,id=dev0,iommufd=iommufd0 \ -object acpi-generic-initiator,id=gi0,pci-dev=dev0,node=2 \ -object acpi-generic-initiator,id=gi1,pci-dev=dev0,node=3 \ -object acpi-generic-initiator,id=gi2,pci-dev=dev0,node=4 \ -object acpi-generic-initiator,id=gi3,pci-dev=dev0,node=5 \ -object acpi-generic-initiator,id=gi4,pci-dev=dev0,node=6 \ -object acpi-generic-initiator,id=gi5,pci-dev=dev0,node=7 \ -object acpi-generic-initiator,id=gi6,pci-dev=dev0,node=8 \ -object acpi-generic-initiator,id=gi7,pci-dev=dev0,node=9 \ -bios /usr/share/AAVMF/AAVMF_CODE.fd \ -device nvme,drive=nvme0,serial=deadbeaf1,bus=pcie.0 \ -drive file=${vm_image},index=0,media=disk,format=qcow2,if=none,id=nvme0 \ -device e1000,romfile=${e1000_rom},netdev=net0,bus=pcie.0 \ -netdev user,id=net0,hostfwd=tcp::5558-:22,hostfwd=tcp::5586-:5586 Nicolin