tree d5924eb1eea3a89244118418ae89a770c7b29297
parent 879fcc6bda6956ce9574421c5f68ebbc794bf06b
author Lu Baolu <baolu.lu@linux.intel.com> 1623290457 +0800
committer Joerg Roedel <jroedel@suse.de> 1623308772 +0200

iommu/vt-d: Support asynchronous IOMMU nested capabilities

Current VT-d implementation supports nested translation only if all
underlying IOMMUs support the nested capability. This is unnecessary
as the upper layer is allowed to create different containers and set
them with different type of iommu backend. The IOMMU driver needs to
guarantee that devices attached to a nested mode iommu_domain should
support nested capabilility.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210517065701.5078-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-6-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>