If you attach an TBT3 NVME storage to USB4 port you can see the warnings that come up without them. I think you can make a call whether that is severe enough to warrant the change.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.14 in Ubuntu. https://bugs.launchpad.net/bugs/1969091 Title: Fixes for dma-iommu swiotlb bounce buffers Status in HWE Next: New Status in linux package in Ubuntu: Incomplete Status in linux-oem-5.14 package in Ubuntu: Invalid Status in linux source package in Focal: Invalid Status in linux-oem-5.14 source package in Focal: Incomplete Status in linux source package in Jammy: Incomplete Status in linux-oem-5.14 source package in Jammy: Invalid Bug description: https://lore.kernel.org/all/20210929023300.335969-1-steve...@google.com/ landed to v5.16 and is being requested to backport to v5.15.y in https://lore.kernel.org/stable/bl1pr12mb5157cd6b2c9d6b8525cfad0ee2...@bl1pr12mb5157.namprd12.prod.outlook.com/T/#u . Related commits are: 08ae5d4a1ae9 iommu/dma: Fix sync_sg with swiotlb (already in stable) 06e620345d54 iommu/dma: Fix arch_sync_dma for map (already in stable) ee9d4097cc14 iommu/dma: Skip extra sync during unmap w/swiotlb 9b49bbc2c4df iommu/dma: Fold _swiotlb helpers into callers 2e727bffbe93 iommu/dma: Check CONFIG_SWIOTLB more broadly e81e99bacc9f swiotlb: Support aligned swiotlb buffers 2cbc61a1b166 iommu/dma: Account for min_align_mask w/swiotlb To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1969091/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
