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Subject[PATCH v2 0/4] iommu: Add device fault reporting API
Date
Allow device drivers and VFIO to get notified on IOMMU translation
fault, and handle recoverable faults (PCI PRI). Several series require
this API (Intel VT-d and Arm SMMUv3 nested support, as well as the
generic host SVA implementation).

Changes since v1 [1]:
* Allocate iommu_param earlier, in iommu_probe_device().
* Pass struct iommu_fault to fault handlers, instead of the
iommu_fault_event wrapper.
* Removed unused iommu_fault_event::iommu_private.
* Removed unnecessary iommu_page_response::addr.
* Added iommu_page_response::version, which would allow to introduce a
new incompatible iommu_page_response structure (as opposed to just
adding a flag + field).

[1] [PATCH 0/4] iommu: Add device fault reporting API
https://lore.kernel.org/lkml/20190523180613.55049-1-jean-philippe.brucker@arm.com/

Jacob Pan (3):
driver core: Add per device iommu param
iommu: Introduce device fault data
iommu: Introduce device fault report API

Jean-Philippe Brucker (1):
iommu: Add recoverable fault reporting

drivers/iommu/iommu.c | 236 ++++++++++++++++++++++++++++++++++++-
include/linux/device.h | 3 +
include/linux/iommu.h | 87 ++++++++++++++
include/uapi/linux/iommu.h | 153 ++++++++++++++++++++++++
4 files changed, 476 insertions(+), 3 deletions(-)
create mode 100644 include/uapi/linux/iommu.h

--
2.21.0

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