| From: |
| Jean-Philippe Brucker <jean-philippe.brucker-AT-arm.com> |
| To: |
| joro-AT-8bytes.org, alex.williamson-AT-redhat.com |
| Subject: |
| [PATCH v2 0/4] iommu: Add device fault reporting API |
| Date: |
| Mon, 3 Jun 2019 15:57:45 +0100 |
| Message-ID: |
| <20190603145749.46347-1-jean-philippe.brucker@arm.com> |
| Cc: |
| jacob.jun.pan-AT-linux.intel.com, eric.auger-AT-redhat.com, ashok.raj-AT-intel.com, yi.l.liu-AT-intel.com, robdclark-AT-gmail.com, linux-kernel-AT-vger.kernel.org, iommu-AT-lists.linux-foundation.org, robin.murphy-AT-arm.com |
| Archive-link: |
| Article |
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-...
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
