linux-kernel - [PATCH v1 00/12] iommufd: Repare for IOMMUFD_OBJ_HW

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Message-ID: <cover.1749488870.git.nicolinc@nvidia.com>
Date: Mon, 9 Jun 2025 10:13:23 -0700
From: Nicolin Chen <nicolinc@...dia.com>
To: <jgg@...dia.com>, <kevin.tian@...el.com>
CC: <will@...nel.org>, <robin.murphy@....com>, <joro@...tes.org>,
	<ddutile@...hat.com>, <yi.l.liu@...el.com>, <peterz@...radead.org>,
	<jsnitsel@...hat.com>, <praan@...gle.com>,
	<linux-arm-kernel@...ts.infradead.org>, <iommu@...ts.linux.dev>,
	<linux-kernel@...r.kernel.org>, <patches@...ts.linux.dev>,
	<baolu.lu@...ux.intel.com>
Subject: [PATCH v1 00/12] iommufd: Repare for IOMMUFD_OBJ_HW_QUEUE

The new HW Queue object will require more interactions with IOMMU drivers,
with a few more for-driver APIs. This will complicate the driver-allocated
structure design like the viommu_alloc op: since the core structure is not
initialized during the driver allocation stage, a new for-driver API can't
reference any member in the core vIOMMU structure.

Make a preparatory series doing:
 - Cosmetic fixes and clean ups
 - Replace viommu_alloc design with get_viommu_size + viommu_init
 - Add a new iommufd_object_alloc_ucmd

Some of the patches are included from:
[PATCH v5 00/29] iommufd: Add vIOMMU infrastructure (Part-4 HW QUEUE)
https://lore.kernel.org/all/cover.1747537752.git.nicolinc@nvidia.com/

This is on Github:
https://github.com/nicolinc/iommufd/commits/iommufd_hw_queue-prep-v1

Thanks
Nicolin

Nicolin Chen (12):
  iommufd: Apply obvious cosmetic fixes
  iommufd: Drop unused ictx in struct iommufd_vdevice
  iommufd: Use enum iommu_viommu_type for type in struct iommufd_viommu
  iommufd: Use enum iommu_veventq_type for type in struct
    iommufd_veventq
  iommu: Introduce get_viommu_size and viommu_init ops
  iommufd/selftest: Implement mock_get_viommu_size and mock_viommu_init
  iommu/arm-smmu-v3: Implement arm_smmu_get_viommu_size and
    arm_vsmmu_init
  iommufd/viommu: Replace ops->viommu_alloc with ops->viommu_init
  iommu: Deprecate viommu_alloc op
  iommufd: Move _iommufd_object_alloc out of driver.c
  iommufd: Introduce iommufd_object_alloc_ucmd helper
  iommufd: Apply the new iommufd_object_alloc_ucmd helper

 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h   | 11 ++--
 drivers/iommu/iommufd/io_pagetable.h          |  2 +-
 drivers/iommu/iommufd/iommufd_private.h       | 33 +++++++---
 include/linux/iommu.h                         | 26 ++++----
 include/linux/iommufd.h                       | 39 +++---------
 .../arm/arm-smmu-v3/arm-smmu-v3-iommufd.c     | 47 +++++++-------
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c   |  3 +-
 drivers/iommu/iommufd/device.c                |  3 +-
 drivers/iommu/iommufd/driver.c                | 33 ----------
 drivers/iommu/iommufd/eventq.c                | 14 ++---
 drivers/iommu/iommufd/hw_pagetable.c          |  6 +-
 drivers/iommu/iommufd/io_pagetable.c          |  3 +-
 drivers/iommu/iommufd/iova_bitmap.c           |  1 -
 drivers/iommu/iommufd/main.c                  | 62 +++++++++++++++++--
 drivers/iommu/iommufd/pages.c                 |  9 ++-
 drivers/iommu/iommufd/selftest.c              | 57 ++++++++---------
 drivers/iommu/iommufd/viommu.c                | 46 +++++++++-----
 17 files changed, 212 insertions(+), 183 deletions(-)

-- 
2.43.0