[PATCH RFC 00/11] iommu: SVA and IOPF refactoring

Lu Baolu
2022-03-20T06:42:49Z

Hi,

The former part of this series refactors the IOMMU SVA code by assigning
an SVA type of iommu_domain to a shared virtual address and replacing
sva_bind/unbind iommu ops with attach/detach_dev_pasid domain ops.

The latter part changes the existing I/O page fault handling framework
from only serving SVA to a generic one. Any driver or component could
handle the I/O page faults for its domain in its own way by installing
an I/O page fault handler.

This series overlaps with another series posted here [1]. For the
convenience of review, I included all relevant patches in this series.
We will solve the overlap problem later.

This series is also available on github here [2].

[1] https://lore.kernel.org/lkml/20220315050713.2000518-1-jacob.jun.pan@linux.intel.com/
[2] https://github.com/LuBaolu/intel-iommu/commits/iommu-sva-refactoring-v1

Please help review and suggest.

Best regards,
baolu

Lu Baolu (11):
iommu: Add pasid_bits field in struct dev_iommu
iommu: Add iommu_domain type for SVA
iommu: Add attach/detach_dev_pasid domain ops
iommu/vt-d: Add SVA domain support
arm-smmu-v3/sva: Add SVA domain support
iommu/sva: Use attach/detach_pasid_dev in SVA interfaces
iommu: Remove SVA related callbacks from iommu ops
iommu: Handle IO page faults directly
iommu: Add iommu_get_domain_for_dev_pasid()
iommu: Make IOPF handling framework generic
iommu: Rename iommu-sva-lib.{c,h}

include/linux/intel-iommu.h | 5 +-
include/linux/iommu.h | 95 +++++---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 25 +-
.../iommu/{iommu-sva-lib.h => iommu-sva.h} | 0
.../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 96 ++++----
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 19 +-
drivers/iommu/intel/iommu.c | 36 +--
drivers/iommu/intel/svm.c | 85 +++----
drivers/iommu/io-pgfault.c | 69 +-----
drivers/iommu/iommu-sva-lib.c | 71 ------
drivers/iommu/iommu-sva.c | 230 ++++++++++++++++++
drivers/iommu/iommu.c | 175 ++++++-------
drivers/iommu/Makefile | 2 +-
13 files changed, 515 insertions(+), 393 deletions(-)
rename drivers/iommu/{iommu-sva-lib.h => iommu-sva.h} (100%)
delete mode 100644 drivers/iommu/iommu-sva-lib.c
create mode 100644 drivers/iommu/iommu-sva.c

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