Re: [PATCH v2 0/2] iommu/vt-d: Use ida for domain ID management

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

On 4/30/25 10:11, Lu Baolu wrote:
> This converts the Intel iommu driver's domain ID management from a
> fixed-size bitmap to the dynamic ida allocator. This improves memory
> efficiency by only allocating resources for the domain IDs actually in
> use, rather than the maximum possible number.
> 
> The also includes necessary cleanups after the ida conversion, including
> locking adjustment for the ida.
> 
> ---
> Change log:
> v2:
>   - Drop the last patch which simplified the code with __free(). There
>     needs a helper like xa_store_or_{reset,kfree}(). Thus I plan to put
>     it a separated series with broader reviewers.
> 
> v1:https://lore.kernel.org/linux-iommu/20250423031020.2189546-1- 
> baolu.lu@linux.intel.com/
> 
> Lu Baolu (2):
>    iommu/vt-d: Use ida to manage domain id
>    iommu/vt-d: Replace spin_lock with mutex to protect domain ida

Queued for v6.16-rc1.