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Message-ID: <cover.1690487690.git.nicolinc@nvidia.com>
Date: Thu, 27 Jul 2023 14:09:39 -0700
From: Nicolin Chen <nicolinc@...dia.com>
To: <jgg@...dia.com>, <kevin.tian@...el.com>
CC: <robin.murphy@....com>, <eric.auger@...hat.com>,
<yi.l.liu@...el.com>, <baolu.lu@...ux.intel.com>,
<will@...nel.org>, <joro@...tes.org>,
<shameerali.kolothum.thodi@...wei.com>, <jean-philippe@...aro.org>,
<linux-arm-kernel@...ts.infradead.org>, <iommu@...ts.linux.dev>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH v5 0/4] Add set_dev_data and unset_dev_data support
Changelog
v5:
* Renamed ioctls to IOMMU_SET_DEV_DATA and IOMMU_UNSET_DEV_DATA
* Renamed data structs to iommu_set_dev_data and IOMMU_UNSET_DEV_DATA
* Added missing TEST_LENGTH for those two new data structures
v4:
https://lore.kernel.org/all/cover.1683593949.git.nicolinc@nvidia.com/
* Rebased on top of v6.4-rc1, and iommufd_nesting-v2 (candidate)
* Dropped WARN_ON in the destroy()
v3:
https://lore.kernel.org/all/cover.1682234302.git.nicolinc@nvidia.com/
* Reverted the data in VFIO BIND ioctl to a set of new iommufd ioctls
* Replaced the iommu_device_data_size array with a dev_user_data_len
variable in the iommu_ops structure.
* Added has_dev_data check and locking protection
* Added selftest coverage
v2:
https://lore.kernel.org/all/cover.1681976394.git.nicolinc@nvidia.com/
* Integrated the uAPI into VFIO_DEVICE_BIND_IOMMUFD call
* Renamed the previous set_rid_user to set_dev_data, to decouple from
the PCI regime.
v1:
https://lore.kernel.org/all/cover.1680762112.git.nicolinc@nvidia.com/
This is a pair of new uAPI/ops for user space to set an iommu specific
device data for a passthrough device. This is primarily used by SMMUv3
driver for now, to link the vSID and the pSID of a device that's behind
the SMMU. The link (lookup table) will be used to verify any ATC_INV
command from the user space for that device, and then replace the SID
field (virtual SID) with the corresponding physical SID.
This series is available on Github:
https://github.com/nicolinc/iommufd/commits/set_dev_data-v5
Thanks!
Nicolin
Nicolin Chen (4):
iommu: Add set/unset_dev_user_data ops
iommufd: Add IOMMUFD_CMD_SET_DEV_DATA and IOMMUFD_CMD_UNSET_DEV_DATA
iommufd/selftest: Add IOMMU_TEST_OP_DEV_CHECK_DATA
iommufd/selftest: Add coverage for IOMMU_SET/UNSET_DEV_DATA
drivers/iommu/iommufd/device.c | 2 +
drivers/iommu/iommufd/iommufd_private.h | 1 +
drivers/iommu/iommufd/iommufd_test.h | 15 ++++
drivers/iommu/iommufd/main.c | 85 +++++++++++++++++++
drivers/iommu/iommufd/selftest.c | 42 +++++++++
include/linux/iommu.h | 13 +++
include/uapi/linux/iommufd.h | 32 +++++++
tools/testing/selftests/iommu/iommufd.c | 22 +++++
tools/testing/selftests/iommu/iommufd_utils.h | 59 +++++++++++++
9 files changed, 271 insertions(+)
--
2.41.0
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