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b=B5f9eRBl+KGgWT936EUGd6T+cWk+xRkiMuBWJ5KKIla4grwmOiaeeJlF3DZ+c3QZ1 tSTM7ND1gap34VnoYGF3pUZy6KttEu3a65c+wDFCySSopNt+JmgXnwEvrTb4r+G2TO lLHSwl+otE7ipDb/K+1cBYw15NLZqlbxcA7JGZ8BdqyX9fOMxjVqh6eczfvqUO6ZFB LsNV5y8I3AOqlFDmbuJQUcvxTH7HQvHKUXwJ9XePUW3qHZs3Y3iB6BMDK09x4Z1vXW 5t6O8jgD1hQCw70V39qXX5shMuw4oTYi+YCcq8o2BfTnfZAzxa3MG9D4jIC/OQYcEU LchGoei8yUjUQ== Date: Sun, 7 Jul 2024 15:45:18 +0300 From: Leon Romanovsky To: Chaitanya Kulkarni Cc: Christoph Hellwig , Jens Axboe , Jason Gunthorpe , Robin Murphy , Joerg Roedel , Will Deacon , Keith Busch , "Zeng, Oak" , 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: <20240707124518.GK6695@unreal> References: <20240703054238.GA25366@lst.de> <20240703105253.GA95824@unreal> <20240703143530.GA30857@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: A5750180007 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: gfwuux5ir4s97wzc7wnafkrgpyue9cwo X-HE-Tag: 1720356324-31664 X-HE-Meta: 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 1bNuZlXr ydrGhbs4KqLA7lKMtmf9AngtBcI+f18Zt0PHq4GqlKbHiG04b6PV8MnuzSymTlk0UvXK0Lop5r0am5zeyDcxYpmdDEW/iJoncZfV0Y+gAVTHMb8kIdyNTmOTTP/IpxKiraJWtE+kQmPdp0ql8B+VzCmmGlS7TxNivdlfTI0wYCiIH/JGcvSiRK6fWpVeXSHFkru4Tqcq1dcbqzJkcS2lYGCTz9+HD6rUEsa8F5uwDYRZxDBwQFT0ccxFHoFTTmYmYVUepj0KCq6c3lpI= 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 Fri, Jul 05, 2024 at 10:53:06PM +0000, Chaitanya Kulkarni wrote: > On 7/3/24 07:35, Christoph Hellwig wrote: > > On Wed, Jul 03, 2024 at 01:52:53PM +0300, Leon Romanovsky wrote: > >> 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. > > qemu-system-x86_64 \ > > -nographic \ > > -enable-kvm \ > > -m 6g \ > > -smp 4 \ > > -cpu host \ > > -M q35,kernel-irqchip=split \ > > -kernel arch/x86/boot/bzImage \ > > -append "root=/dev/vda console=ttyS0,115200n8 intel_iommu=on" \ > > -device intel-iommu,intremap=on \ > > -device ioh3420,multifunction=on,bus=pcie.0,id=port9-0,addr=9.0,chassis=0 \ > > -blockdev driver=file,cache.direct=on,node-name=root,filename=/home/hch/images/bookworm.img \ > > -blockdev driver=host_device,cache.direct=on,node-name=test,filename=/dev/nvme0n1p4 \ > > -device virtio-blk,drive=root \ > > -device nvme,drive=test,serial=1234 > > > > I tried to reproduce this issue somehow it is not reproducible. > > I'll try again on Leon's setup on my Saturday night, to fix that > case. Chaitanya, I added "mem_align=120" line to fio configuration file and the issue reproduced. Thanks > > -ck > > >