Re: [PATCH v6 00/13] Make set_dev_pasid op supporting domain replacement

[Baolu Lu <baolu.lu@linux.intel.com>]

On 11/7/24 20:22, Yi Liu wrote:
> This splits the preparation works of the iommu and the Intel iommu driver
> out from the iommufd pasid attach/replace series. [1]
> 
> To support domain replacement, the definition of the set_dev_pasid op
> needs to be enhanced. Meanwhile, the existing set_dev_pasid callbacks
> should be extended as well to suit the new definition.
> 
> This series first passes the old domain to the set_dev_pasid op, and prepares
> the Intel iommu set_dev_pasid callbacks (paging domain, identity domain, and
> sva domain) for the new definition, add the missing set_dev_pasid callback
> for the nested domain, makes ARM SMMUv3 set_dev_pasid op to suit the new
> set_dev_pasid op definition, and in the end, claims the set_dev_pasid op support
> domain replacement. The AMD set_dev_pasid callback is extended to fail if the
> caller tries to do the domain replacement to meet the new definition of
> set_dev_pasid op. AMD iommu driver would support it later per Vasant [2].
> 
> [1]https://lore.kernel.org/linux-iommu/20240412081516.31168-1- 
> yi.l.liu@intel.com/
> [2]https://lore.kernel.org/linux-iommu/fa9c4fc3-9365-465e-8926- 
> b4d2d6361b9c@amd.com/
> 
> This is based on Joerg's next branch. Base commit: 75bc266cd1a6
> 
> v6:
>   - Fix a 0day compiling issue (Baolu)
>   - Refine the pasid replace helpers to compose new pasid entry and do a full
>     copy instead of setting each fields in the pasid entry from the pasid table.
>     This avoids transit the existing pasid entry multiple times. (Baolu)

Queued for v6.13. Thank you, Yi.

--
baolu