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b=nYd4RQLPNWY78pIbNAILafDzME2V0q1JxD04RIMzYEVRTvt89jlLKvJriZcMCuH2T w96uRRv/Q4LrMA7qbS+tVVzGZ8TbYD4a7uxMEPOOXtyhfAZjqiLtWvl7qwC+YZD5Ba v6Hluy8LaijXySSMoswEpGvrCLN3gkwpFP2bG31B2uIuuhMWFdHvJ6hmi9njK5bywp geNwo4OuHZBuA495qG+lQBMrzBgxPLYgn8KinCmvDBq9hmAZenc9g0C6DeVOsibSX2 IVVgir3Al85xqpIrwp6ua76xZvzC0FWDuHMKCBDh5k2QhOV31v4/Nqa/LhITpDNtHG 1wsaj+G6o4oiw== Date: Wed, 3 Jul 2024 13:52:53 +0300 From: Leon Romanovsky To: Christoph Hellwig Cc: Jens Axboe , Jason Gunthorpe , Robin Murphy , Joerg Roedel , Will Deacon , Keith Busch , "Zeng, Oak" , Chaitanya Kulkarni , Sagi Grimberg , Bjorn Helgaas , Logan Gunthorpe , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , Marek Szyprowski , =?iso-8859-1?B?Suly9G1l?= Glisse , Andrew Morton , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, iommu@lists.linux.dev, linux-nvme@lists.infradead.org, linux-pci@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org Subject: Re: [RFC PATCH v1 00/18] Provide a new two step DMA API mapping API Message-ID: <20240703105253.GA95824@unreal> References: <20240703054238.GA25366@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240703054238.GA25366@lst.de> X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: B404220018 X-Stat-Signature: r1no45duzo5c4a4rcmjwa9enb4k6im9r X-Rspam-User: X-HE-Tag: 1720003979-802823 X-HE-Meta: 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 OZTELeXc fvo/aDOKaPQ7GkCws5eEIkljY9JZAjoVDkGU5/Zys6LfgWOOmcDUY6DbDay9sTsvxxkhHu3Tz+W1sCKBQiRijgIyelniSPoTQ7Y+NewFAAbXjjfeUEBDWXfx00paMPGp0NSEq5HmhGoEe+Zf51hXyr0kE2eWfGxjX4WqU1twrbZIbJdcLfGIyGwfOUclfeTJAidFBHYM4Eri5m/5uFaH9RKBNd8zCMqywBgYg X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Jul 03, 2024 at 07:42:38AM +0200, Christoph Hellwig wrote: > I just tried to boot this on my usual qemu test setup with emulated > nvme devices, and it dead-loops with messages like this fairly late > in the boot cycle: > > [ 43.826627] iommu: unaligned: iova 0xfff7e000 pa 0x000000010be33650 size 0x1000 min_pagesz 0x1000 > [ 43.826982] dma_mapping_error -12 > > passing intel_iommu=off instead of intel_iommu=on (expectedly) makes > it go away. Can you please share your kernel command line and qemu? On my and Chaitanya setups it works fine. Thanks