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. -ck
