[PATCH v10 00/13] iommu: Shared Virtual Addressing for SMMUv3 (PT sharing part)

Jean-Philippe Brucker
2020-09-18T10:21:46Z

This is version 10 of the page table sharing support for Arm SMMUv3.
Patch 1 still needs an Ack from mm maintainers. However patches 4-11 do
not depend on it, and could get merged for v5.10 regardless.

v10:
* Fix patches 3, 8, 9 and 10 following Eric's review.

v9 resend: https://lore.kernel.org/linux-iommu/20200817171558.325917-1-jean-philippe@linaro.org/
* Rebased onto v5.9-rc1. Moved to drivers/iommu/arm/arm-smmu-v3/ as a
result.

v9: https://lore.kernel.org/linux-iommu/20200723145724.3014766-1-jean-philippe@linaro.org/
* Moved most of the SVA code to arm-smmu-v3-sva.c. This required moving
struct definitions and macros to arm-smmu-v3.h (patch 7), hence the
new 700 insertions/deletions in the diffstat.
* Updated patches 4 and 8 following review.
* Fixed a bug when replacing a private ASID.

v8: https://lore.kernel.org/linux-iommu/20200618155125.1548969-1-jean-philippe@linaro.org/
* Split SVA series into three parts: page table sharing, I/O page
faults, and additional features (DVM, VHE and HTTU).

Fenghua Yu (1):
mm: Define pasid in mm

Jean-Philippe Brucker (12):
iommu/ioasid: Add ioasid references
iommu/sva: Add PASID helpers
arm64: mm: Pin down ASIDs for sharing mm with devices
iommu/io-pgtable-arm: Move some definitions to a header
arm64: cpufeature: Export symbol read_sanitised_ftr_reg()
iommu/arm-smmu-v3: Move definitions to a header
iommu/arm-smmu-v3: Share process page tables
iommu/arm-smmu-v3: Seize private ASID
iommu/arm-smmu-v3: Check for SVA features
iommu/arm-smmu-v3: Add SVA device feature
iommu/arm-smmu-v3: Implement iommu_sva_bind/unbind()
iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops

drivers/iommu/Kconfig | 17 +
drivers/iommu/Makefile | 1 +
drivers/iommu/arm/arm-smmu-v3/Makefile | 5 +-
arch/arm64/include/asm/mmu.h | 3 +
arch/arm64/include/asm/mmu_context.h | 11 +-
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 752 +++++++++++++++
drivers/iommu/io-pgtable-arm.h | 30 +
drivers/iommu/iommu-sva-lib.h | 15 +
include/linux/ioasid.h | 10 +-
include/linux/mm_types.h | 4 +
arch/arm64/kernel/cpufeature.c | 1 +
arch/arm64/mm/context.c | 105 ++-
.../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 488 ++++++++++
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 860 ++++--------------
drivers/iommu/intel/iommu.c | 4 +-
drivers/iommu/intel/svm.c | 6 +-
drivers/iommu/io-pgtable-arm.c | 27 +-
drivers/iommu/ioasid.c | 38 +-
drivers/iommu/iommu-sva-lib.c | 86 ++
MAINTAINERS | 3 +-
20 files changed, 1731 insertions(+), 735 deletions(-)
create mode 100644 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
create mode 100644 drivers/iommu/io-pgtable-arm.h
create mode 100644 drivers/iommu/iommu-sva-lib.h
create mode 100644 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
create mode 100644 drivers/iommu/iommu-sva-lib.c

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2.28.0