Re: [PATCH 1/3] iommu/vt-d: Use ida to manage domain id

[Baolu Lu]

On 4/23/2025 11:10 AM, Lu Baolu wrote:
> @@ -2042,7 +1998,7 @@ static int copy_context_table(struct intel_iommu *iommu,
>   
>   		did = context_domain_id(&ce);
>   		if (did >= 0 && did < cap_ndoms(iommu->cap))
> -			set_bit(did, iommu->domain_ids);
> +			ida_alloc_range(&iommu->domain_ida, did, did + 1, GFP_KERNEL);

ida allocation range is inclusive, thus here it should be,

ida_alloc_range(&iommu->domain_ida, did, did, GFP_KERNEL);

>   
>   		set_context_copied(iommu, bus, devfn);
>   		new_ce[idx] = ce;

Thanks,
baolu