device-lenovo-21bx: consider re-enabling non-strict iommu
In !4696 (merged), @jenneron mentioned:
Note that it will probably still benefit from non-strict iommu. I don't recommend doing it in cmdline for all peripherals, but rather something like !4526 (merged), it may give you 5-15% more UFS and USB performance.
The context was a patch that removed the iommu.passthrough=0 iommu.strict=0
kernel cmdline parameters.