RE: [PATCH v9 01/11] iommu: Add max_pasids field in struct iommu_device

[Tian, Kevin]

> From: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> Sent: Tuesday, June 21, 2022 10:44 PM
> 
> Use this field to keep the number of supported PASIDs that an IOMMU
> hardware is able to support. This is a generic attribute of an IOMMU
> and lifting it into the per-IOMMU device structure makes it possible
> to allocate a PASID for device without calls into the IOMMU drivers.
> Any iommu driver that supports PASID related features should set this
> field before enabling them on the devices.
> 
> In the Intel IOMMU driver, intel_iommu_sm is moved to
> CONFIG_INTEL_IOMMU
> enclave so that the pasid_supported() helper could be used in dmar.c
> without compilation errors.
> 
> Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> Reviewed-by: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>