From: Lu Baolu <baolu.lu@linux.intel.com>
To: Joerg Roedel <joro@8bytes.org>, Jason Gunthorpe <jgg@nvidia.com>,
Christoph Hellwig <hch@infradead.org>,
Kevin Tian <kevin.tian@intel.com>,
Ashok Raj <ashok.raj@intel.com>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
Dave Jiang <dave.jiang@intel.com>, Vinod Koul <vkoul@kernel.org>
Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
Jacob jun Pan <jacob.jun.pan@intel.com>
Subject: [PATCH v6 00/12] iommu: SVA and IOPF refactoring
Date: Tue, 10 May 2022 14:17:26 +0800 [thread overview]
Message-ID: <20220510061738.2761430-1-baolu.lu@linux.intel.com> (raw)
Hi folks,
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 has been functionally tested on an x86 machine and compile
tested for other architectures.
This series is also available on github:
[2] https://github.com/LuBaolu/intel-iommu/commits/iommu-sva-refactoring-v6
Please review and suggest.
Best regards,
baolu
Change log:
v6:
- Refine the SVA basic data structures.
Link: https://lore.kernel.org/linux-iommu/YnFv0ps0Ad8v+7uH@myrica/
- Refine arm smmuv3 sva domain allocation.
- Fix a possible lock issue.
Link: https://lore.kernel.org/linux-iommu/YnFydE8j8l7Q4m+b@myrica/
v5:
- https://lore.kernel.org/linux-iommu/20220502014842.991097-1-baolu.lu@linux.intel.com/
- Address review comments from Jean-Philippe Brucker. Very appreciated!
- Remove redundant pci aliases check in
device_group_immutable_singleton().
- Treat all buses exept PCI as static in immutable singleton check.
- As the sva_bind/unbind() have already guaranteed sva domain free only
after iopf_queue_flush_dev(), remove the unnecessary domain refcount.
- Move domain get() out of the list iteration in iopf_handle_group().
v4:
- https://lore.kernel.org/linux-iommu/20220421052121.3464100-1-baolu.lu@linux.intel.com/
- Solve the overlap with another series and make this series
self-contained.
- No objection to the abstraction of data structure during v3 review.
Hence remove the RFC subject prefix.
- Refine the immutable singleton group code according to Kevin's
comments.
v3:
- https://lore.kernel.org/linux-iommu/20220410102443.294128-1-baolu.lu@linux.intel.com/
- Rework iommu_group_singleton_lockdown() by adding a flag to the group
that positively indicates the group can never have more than one
member, even after hot plug.
- Abstract the data structs used for iommu sva in a separated patches to
make it easier for review.
- I still keep the RFC prefix in this series as above two significant
changes need at least another round review to be finalized.
- Several misc refinements.
v2:
- https://lore.kernel.org/linux-iommu/20220329053800.3049561-1-baolu.lu@linux.intel.com/
- Add sva domain life cycle management to avoid race between unbind and
page fault handling.
- Use a single domain for each mm.
- Return a single sva handler for the same binding.
- Add a new helper to meet singleton group requirement.
- Rework the SVA domain allocation for arm smmu v3 driver and move the
pasid_bit initialization to device probe.
- Drop the patch "iommu: Handle IO page faults directly".
- Add mmget_not_zero(mm) in SVA page fault handler.
v1:
- https://lore.kernel.org/linux-iommu/20220320064030.2936936-1-baolu.lu@linux.intel.com/
- Initial post.
Dave Jiang (1):
dmaengine: idxd: Separate user and kernel pasid enabling
Lu Baolu (11):
iommu: Add pasid_bits field in struct dev_iommu
iommu: Add attach/detach_dev_pasid domain ops
iommu/sva: Basic data structures for SVA
iommu/vt-d: Remove SVM_FLAG_SUPERVISOR_MODE support
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: Prepare IOMMU domain for IOPF
iommu: Per-domain I/O page fault handling
iommu: Rename iommu-sva-lib.{c,h}
include/linux/intel-iommu.h | 9 +-
include/linux/iommu.h | 99 +++++--
drivers/dma/idxd/idxd.h | 6 +
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 19 +-
.../iommu/{iommu-sva-lib.h => iommu-sva.h} | 3 -
drivers/dma/idxd/cdev.c | 4 +-
drivers/dma/idxd/init.c | 30 +-
.../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 111 +++++---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 10 +-
drivers/iommu/intel/iommu.c | 12 +-
drivers/iommu/intel/svm.c | 146 ++++------
drivers/iommu/io-pgfault.c | 73 +----
drivers/iommu/iommu-sva-lib.c | 71 -----
drivers/iommu/iommu-sva.c | 261 ++++++++++++++++++
drivers/iommu/iommu.c | 193 +++++++------
drivers/iommu/Makefile | 2 +-
16 files changed, 623 insertions(+), 426 deletions(-)
rename drivers/iommu/{iommu-sva-lib.h => iommu-sva.h} (91%)
delete mode 100644 drivers/iommu/iommu-sva-lib.c
create mode 100644 drivers/iommu/iommu-sva.c
--
2.25.1
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next reply other threads:[~2022-05-10 6:21 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-10 6:17 Lu Baolu [this message]
2022-05-10 6:17 ` [PATCH v6 01/12] dmaengine: idxd: Separate user and kernel pasid enabling Lu Baolu
2022-05-10 6:17 ` [PATCH v6 02/12] iommu: Add pasid_bits field in struct dev_iommu Lu Baolu
2022-05-10 14:34 ` Jason Gunthorpe via iommu
2022-05-11 2:25 ` Baolu Lu
2022-05-11 8:00 ` Jean-Philippe Brucker
2022-05-11 11:59 ` Jason Gunthorpe via iommu
2022-05-10 6:17 ` [PATCH v6 03/12] iommu: Add attach/detach_dev_pasid domain ops Lu Baolu
2022-05-10 14:02 ` Jason Gunthorpe via iommu
2022-05-11 2:32 ` Baolu Lu
2022-05-11 4:09 ` Tian, Kevin
2022-05-11 7:54 ` Jean-Philippe Brucker
2022-05-11 12:02 ` Jason Gunthorpe via iommu
2022-05-12 7:00 ` Jean-Philippe Brucker
2022-05-12 11:51 ` Jason Gunthorpe via iommu
2022-05-16 2:03 ` Baolu Lu
2022-05-10 6:17 ` [PATCH v6 04/12] iommu/sva: Basic data structures for SVA Lu Baolu
2022-05-10 6:17 ` [PATCH v6 05/12] iommu/vt-d: Remove SVM_FLAG_SUPERVISOR_MODE support Lu Baolu
2022-05-10 14:35 ` Jason Gunthorpe via iommu
2022-05-10 6:17 ` [PATCH v6 06/12] iommu/vt-d: Add SVA domain support Lu Baolu
2022-05-10 6:17 ` [PATCH v6 07/12] arm-smmu-v3/sva: " Lu Baolu
2022-05-10 6:17 ` [PATCH v6 08/12] iommu/sva: Use attach/detach_pasid_dev in SVA interfaces Lu Baolu
2022-05-10 15:23 ` Jason Gunthorpe via iommu
2022-05-11 7:21 ` Baolu Lu
2022-05-11 14:53 ` Jason Gunthorpe via iommu
2022-05-12 3:02 ` Baolu Lu
2022-05-12 5:01 ` Tian, Kevin
2022-05-12 5:17 ` Baolu Lu
2022-05-12 5:44 ` Tian, Kevin
2022-05-12 6:16 ` Baolu Lu
2022-05-12 11:48 ` Jason Gunthorpe via iommu
2022-05-12 11:59 ` Baolu Lu
2022-05-12 12:03 ` Jason Gunthorpe via iommu
2022-05-12 12:47 ` Baolu Lu
2022-05-12 11:51 ` Jason Gunthorpe via iommu
2022-05-12 12:39 ` Baolu Lu
2022-05-10 6:17 ` [PATCH v6 09/12] iommu: Remove SVA related callbacks from iommu ops Lu Baolu
2022-05-10 6:17 ` [PATCH v6 10/12] iommu: Prepare IOMMU domain for IOPF Lu Baolu
2022-05-10 6:17 ` [PATCH v6 11/12] iommu: Per-domain I/O page fault handling Lu Baolu
2022-05-10 6:17 ` [PATCH v6 12/12] iommu: Rename iommu-sva-lib.{c,h} Lu Baolu
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