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To:     Jacob Pan <jacob.jun.pan@linux.intel.com>,
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CC:     Will Deacon <will@kernel.org>,
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Subject: RE: [PATCH v8 3/7] iommu/vt-d: Add domain_flush_pasid_iotlb()
Thread-Topic: [PATCH v8 3/7] iommu/vt-d: Add domain_flush_pasid_iotlb()
Thread-Index: AQHZlX6G58yoJ2trREy+k2y4ofsqpa+KBcdw
Date:   Wed, 14 Jun 2023 08:16:01 +0000
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References: <20230602182212.150825-1-jacob.jun.pan@linux.intel.com>
 <20230602182212.150825-4-jacob.jun.pan@linux.intel.com>
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> From: Jacob Pan <jacob.jun.pan@linux.intel.com>
> Sent: Saturday, June 3, 2023 2:22 AM
>=20
> From: Lu Baolu <baolu.lu@linux.intel.com>
>=20
> The VT-d spec requires to use PASID-based-IOTLB invalidation descriptor
> to invalidate IOTLB and the paging-structure caches for a first-stage
> page table. Add a generic helper to do this.
>=20
> RID2PASID is used if the domain has been attached to a physical device,
> otherwise real PASIDs that the domain has been attached to will be used.
>=20
> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
> Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>

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