iommu/vt-d: Track nested domains in parent

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Today the parent domain (s2_domain) is unaware of which DID's are
used by and which devices are attached to nested domains (s1_domain)
nested on it. This leads to a problem that some operations (flush
iotlb/devtlb and enable dirty tracking) on parent domain only apply to
DID's and devices directly tracked in the parent domain hence are
incomplete.

This tracks the nested domains in list in parent domain. With this,
operations on parent domain can loop the nested domains and refer to
the devices and iommu_array to ensure the operations on parent domain
take effect on all the affected devices and iommus.

Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240208082307.15759-2-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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This commit is contained in:

Yi Liu 2024-02-19 19:15:52 +08:00 • committed by Joerg Roedel

parent b401b62175

commit 85ce8e1d6d

3 changed files with 31 additions and 5 deletions

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18

drivers/iommu/intel/iommu.c

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6

drivers/iommu/intel/iommu.h

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12

drivers/iommu/intel/nested.c

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