iommu/vt-d: Per PCI device pasid table interfaces

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This patch adds the interfaces for per PCI device pasid
table management. Currently we allocate one pasid table
for all PCI devices under the scope of an IOMMU. It's
insecure in some cases where multiple devices under one
single IOMMU unit support PASID features. With per PCI
device pasid table, we can achieve finer protection and
isolation granularity.

Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Liu Yi L <yi.l.liu@intel.com>
Suggested-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

...

This commit is contained in:

Lu Baolu 2018-07-14 15:46:59 +08:00 • committed by Joerg Roedel

parent 85319dcc89

commit cc580e4126

5 changed files with 200 additions and 4 deletions

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1

drivers/iommu/intel-iommu.c

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179

drivers/iommu/intel-pasid.c

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18

drivers/iommu/intel-pasid.h

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4

drivers/iommu/intel-svm.c

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2

include/linux/intel-iommu.h

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