From: Nicolin Chen <nicolinc@nvidia.com>
To: <jgg@nvidia.com>, <robin.murphy@arm.com>, <kevin.tian@intel.com>
Cc: <eric.auger@redhat.com>, <yi.l.liu@intel.com>,
<baolu.lu@linux.intel.com>, <will@kernel.org>, <joro@8bytes.org>,
<shameerali.kolothum.thodi@huawei.com>,
<jean-philippe@linaro.org>,
<linux-arm-kernel@lists.infradead.org>, <iommu@lists.linux.dev>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH RFC v1 0/3] Add set_rid_user and unset_rid_user support
Date: Wed, 5 Apr 2023 23:25:33 -0700 [thread overview]
Message-ID: <cover.1680762112.git.nicolinc@nvidia.com> (raw)
This is a pair of new uAPI/ops for user space to set a user space virtual
Request ID for a passthrough PCI device, down to the IOMMU driver. This's
primarily used by SMMUv3 driver for now, to link the vSID and the pSID of
a device behind the SMMU. The link (lookup table) will be used to verify
an ATC_INV command from the user space for that device, and then replace
the virtual SID with the corresponding physical SID.
This is a RFC series, since I am not confident at all about the uAPI/ops
namings. Hopefully we can finalize this small series soon and include it
in the next version of SMMUv3 nesting series.
This series is available on Github:
https://github.com/nicolinc/iommufd/commits/set_rid_user-rfc-v1
Thanks!
Nicolin
Nicolin Chen (3):
iommu: Add set/unset_rid_user ops
iommufd: Add IOMMUFD_CMD_DEVICE_SET_RID and
IOMMUFD_CMD_DEVICE_UNSET_RID
iommu/arm-smmu-v3: Implement set_rid_user and unset_rid_user
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 45 +++++++++++++++++++++
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 2 +
drivers/iommu/iommufd/device.c | 39 ++++++++++++++++++
drivers/iommu/iommufd/iommufd_private.h | 2 +
drivers/iommu/iommufd/main.c | 4 ++
include/linux/iommu.h | 4 ++
include/uapi/linux/iommufd.h | 31 ++++++++++++++
7 files changed, 127 insertions(+)
--
2.40.0
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next reply other threads:[~2023-04-06 6:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-06 6:25 Nicolin Chen [this message]
2023-04-06 6:25 ` [PATCH RFC v1 1/3] iommu: Add set/unset_rid_user ops Nicolin Chen
2023-04-06 6:25 ` [PATCH RFC v1 2/3] iommufd: Add IOMMUFD_CMD_DEVICE_SET_RID and IOMMUFD_CMD_DEVICE_UNSET_RID Nicolin Chen
2023-04-06 6:25 ` [PATCH RFC v1 3/3] iommu/arm-smmu-v3: Implement set_rid_user and unset_rid_user Nicolin Chen
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