iommu/vt-d: Aux-domain specific domain attach/detach

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When multiple domains per device has been enabled by the
device driver, the device will tag the default PASID for
the domain to all DMA traffics out of the subset of this
device; and the IOMMU should translate the DMA requests
in PASID granularity.

This adds the intel_iommu_aux_attach/detach_device() ops
to support managing PASID granular translation structures
when the device driver has enabled multiple domains per
device.

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

...

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Lu Baolu 2019-03-25 09:30:32 +08:00 • committed by Joerg Roedel

parent 8cc3759a6c

commit 67b8e02b5e

2 changed files with 162 additions and 0 deletions

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152

drivers/iommu/intel-iommu.c

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10

include/linux/intel-iommu.h

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