在 2024/7/3 13:42, Christoph Hellwig 写道:
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
I also confronted this problem.IMO, if intel_iommu=off, the driver of drivers/iommu can not be used.
If I remember correctly, some guys in the first version can fix this problem. I will check the mails.
To me, I just revert this commit because I do not use this commit about nvme.
Zhu Yanjun
it go away.
