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