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 > > >
