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To:     Lu Baolu <baolu.lu@linux.intel.com>,
        Joerg Roedel <joro@8bytes.org>,
        "Jason Gunthorpe" <jgg@nvidia.com>,
        Christoph Hellwig <hch@infradead.org>,
        "Raj, Ashok" <ashok.raj@intel.com>, Will Deacon <will@kernel.org>,
        Robin Murphy <robin.murphy@arm.com>,
        Jean-Philippe Brucker <jean-philippe@linaro.com>,
        "Jiang, Dave" <dave.jiang@intel.com>, Vinod Koul <vkoul@kernel.org>
CC:     Eric Auger <eric.auger@redhat.com>,
        "Liu, Yi L" <yi.l.liu@intel.com>,
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        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "Jean-Philippe Brucker" <jean-philippe@linaro.org>
Subject: RE: [PATCH v9 01/11] iommu: Add max_pasids field in struct
 iommu_device
Thread-Topic: [PATCH v9 01/11] iommu: Add max_pasids field in struct
 iommu_device
Thread-Index: AQHYhX31rU/ZdbFERkaYYL2LNRxtSq1i7edw
Date:   Mon, 27 Jun 2022 08:05:15 +0000
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> From: Lu Baolu <baolu.lu@linux.intel.com>
> Sent: Tuesday, June 21, 2022 10:44 PM
>=20
> 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.
>=20
> 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.
>=20
> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
> Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>

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