Re: [PATCH v2 2/6] iommu/vt-d: Move intel_drain_pasid_prq() into intel_pasid_tear_down_entry()

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

On 9/12/24 9:04 PM, Yi Liu wrote:
> diff --git a/drivers/iommu/intel/pasid.c b/drivers/iommu/intel/pasid.c
> index b51fc268dc84..ceb9c5274a39 100644
> --- a/drivers/iommu/intel/pasid.c
> +++ b/drivers/iommu/intel/pasid.c
> @@ -236,8 +236,13 @@ devtlb_invalidation_with_pasid(struct intel_iommu *iommu,
>   		qi_flush_dev_iotlb_pasid(iommu, sid, pfsid, pasid, qdep, 0, 64 - VTD_PAGE_SHIFT);
>   }
>   
> +/*
> + * Not all PASID entry destroy requires PRQ drain as it can be handled in
> + * the remove_dev_pasid path. Caller should be clear about it and set the
> + * @flags properly.
> + */
>   void intel_pasid_tear_down_entry(struct intel_iommu *iommu, struct device *dev,
> -				 u32 pasid, bool fault_ignore)
> +				 u32 pasid, u32 flags)

As a generic opt-in bit flags, why not using 'unsigned int'?

Thanks,
baolu