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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>
Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
	Jacob jun Pan <jacob.jun.pan@intel.com>
Subject: [PATCH RFC v2 00/11] iommu: SVA and IOPF refactoring
Date: Tue, 29 Mar 2022 13:37:49 +0800	[thread overview]
Message-ID: <20220329053800.3049561-1-baolu.lu@linux.intel.com> (raw)

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-v2

Please help review and suggest.

Best regards,
baolu

Change log:
v1:
 - https://lore.kernel.org/linux-iommu/20220320064030.2936936-1-baolu.lu@linux.intel.com/
 - Initial post.

v2:
 - 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.

Lu Baolu (11):
  iommu: Add pasid_bits field in struct dev_iommu
  iommu: Add iommu_group_singleton_lockdown()
  iommu/sva: Add iommu_domain type for SVA
  iommu: Add attach/detach_dev_pasid domain ops
  iommu/vt-d: Remove SVM_FLAG_SUPERVISOR_MODE suport
  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: Per-domain I/O page fault handling
  iommu: Rename iommu-sva-lib.{c,h}

 include/linux/intel-iommu.h                   |   5 +-
 include/linux/iommu.h                         | 107 ++++--
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h   |  25 +-
 .../iommu/{iommu-sva-lib.h => iommu-sva.h}    |  12 +-
 .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c   |  85 ++---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c   |  28 +-
 drivers/iommu/intel/iommu.c                   |  20 +-
 drivers/iommu/intel/svm.c                     | 135 +++-----
 drivers/iommu/io-pgfault.c                    |  72 +---
 drivers/iommu/iommu-sva-lib.c                 |  71 ----
 drivers/iommu/iommu-sva.c                     | 307 ++++++++++++++++++
 drivers/iommu/iommu.c                         | 208 ++++++------
 drivers/iommu/Makefile                        |   2 +-
 13 files changed, 655 insertions(+), 422 deletions(-)
 rename drivers/iommu/{iommu-sva-lib.h => iommu-sva.h} (80%)
 delete mode 100644 drivers/iommu/iommu-sva-lib.c
 create mode 100644 drivers/iommu/iommu-sva.c

-- 
2.25.1

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             reply	other threads:[~2022-03-29  5:40 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-29  5:37 Lu Baolu [this message]
2022-03-29  5:37 ` [PATCH RFC v2 01/11] iommu: Add pasid_bits field in struct dev_iommu Lu Baolu
2022-03-29 21:00   ` Jacob Pan
2022-03-30  4:30     ` Lu Baolu
2022-03-30  7:05   ` Tian, Kevin
2022-03-30 11:58     ` Lu Baolu
2022-03-29  5:37 ` [PATCH RFC v2 02/11] iommu: Add iommu_group_singleton_lockdown() Lu Baolu
2022-03-29  8:42   ` Tian, Kevin
2022-03-29 11:42     ` Jason Gunthorpe via iommu
2022-03-30  6:50       ` Tian, Kevin
2022-03-30 11:57         ` Lu Baolu
2022-03-30 11:58         ` Jason Gunthorpe via iommu
2022-03-30 14:12           ` Tian, Kevin
2022-03-30 14:30             ` Jason Gunthorpe via iommu
2022-04-02  7:12               ` Tian, Kevin
2022-04-02 23:29                 ` Jason Gunthorpe via iommu
2022-04-06 10:02                 ` Lu Baolu
2022-04-06 10:44                   ` Tian, Kevin
2022-04-06 11:03                     ` Lu Baolu
2022-04-06 23:56                       ` Tian, Kevin
2022-03-30 14:18           ` Tian, Kevin
2022-03-30 15:04             ` Alex Williamson
2022-04-04  5:43           ` Lu Baolu
2022-04-04 17:24             ` Jason Gunthorpe via iommu
2022-04-05  6:12               ` Lu Baolu
2022-04-05 14:10                 ` Jason Gunthorpe via iommu
2022-04-06  9:51                   ` Lu Baolu
2022-04-01  6:20       ` Yi Liu
2022-04-01 11:52         ` Jason Gunthorpe via iommu
2022-03-30  4:59     ` Lu Baolu
2022-03-30  6:55       ` Tian, Kevin
2022-04-01  5:49     ` Yi Liu
2022-03-29  5:37 ` [PATCH RFC v2 03/11] iommu/sva: Add iommu_domain type for SVA Lu Baolu
2022-03-29 21:38   ` Jacob Pan
2022-03-30  4:35     ` Lu Baolu
2022-03-30 19:02   ` Jason Gunthorpe via iommu
2022-04-02  8:43     ` Tian, Kevin
2022-04-02 23:32       ` Jason Gunthorpe via iommu
2022-04-04  6:09         ` Lu Baolu
2022-04-06  1:00         ` Tian, Kevin
2022-04-06  1:23           ` Jason Gunthorpe via iommu
2022-04-06  5:58             ` Tian, Kevin
2022-04-06 12:32               ` Robin Murphy
2022-04-06 13:06                 ` Jason Gunthorpe via iommu
2022-04-06 13:37                   ` Robin Murphy
2022-04-06 14:01                     ` Jason Gunthorpe via iommu
2022-04-07  0:11                 ` Tian, Kevin
2022-03-29  5:37 ` [PATCH RFC v2 04/11] iommu: Add attach/detach_dev_pasid domain ops Lu Baolu
2022-03-30 19:08   ` Jason Gunthorpe via iommu
2022-04-04  6:47     ` Lu Baolu
2022-03-29  5:37 ` [PATCH RFC v2 05/11] iommu/vt-d: Remove SVM_FLAG_SUPERVISOR_MODE suport Lu Baolu
2022-03-29  5:37 ` [PATCH RFC v2 06/11] iommu/vt-d: Add SVA domain support Lu Baolu
2022-03-30 19:09   ` Jason Gunthorpe via iommu
2022-04-04  6:52     ` Lu Baolu
2022-03-29  5:37 ` [PATCH RFC v2 07/11] arm-smmu-v3/sva: " Lu Baolu
2022-03-29  5:37 ` [PATCH RFC v2 08/11] iommu/sva: Use attach/detach_pasid_dev in SVA interfaces Lu Baolu
2022-03-31 20:59   ` Jacob Pan
2022-03-31 22:26     ` Jason Gunthorpe via iommu
2022-04-04  5:55       ` Lu Baolu
2022-03-29  5:37 ` [PATCH RFC v2 09/11] iommu: Remove SVA related callbacks from iommu ops Lu Baolu
2022-03-29  5:37 ` [PATCH RFC v2 10/11] iommu: Per-domain I/O page fault handling Lu Baolu
2022-03-29  5:38 ` [PATCH RFC v2 11/11] iommu: Rename iommu-sva-lib.{c,h} Lu Baolu

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