Re: [PATCH v5 00/14] Fix BUG_ON in vfio_iommu_group_notifier()

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Hi Jason,

On 1/4/22 8:48 PM, Jason Gunthorpe wrote:
On Tue, Jan 04, 2022 at 09:56:30AM +0800, Lu Baolu wrote:

v5:
   - Move kernel dma ownership auto-claiming from driver core to bus
     callback. (Greg)
   - Refactor the iommu interfaces to make them more specific.
     (Jason/Robin)
   - Simplify the dma ownership implementation by removing the owner
     type. (Jason)
   - Commit message refactoring for PCI drivers. (Bjorn)
   - Move iommu_attach/detach_device() improvement patches into another
     series as there are a lot of code refactoring and cleanup staffs
     in various device drivers.

Since you already have the code you should make this 'other series'
right now. It should delete iommu_group_attach() and fix
iommu_device_attach().

Yes. I am doing the functional and compile tests. I will post it once I
complete the testing.


You also didn't really do my suggestion, this messes up the normal
__iommu_attach_group()/__iommu_detach_group() instead of adding the
clear to purpose iommu_replace_group() for VFIO to use. This just
makes it more difficult to normalize the APIs.

I didn't forget that. :-) It's part of the new series.


Otherwise it does seem to have turned out to be more understandable.

Jason


Best regards,
baolu



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