linux-toradex.git/rust/kernel/lib.rs, branch v7.0-rc5 Linux kernel for Apalis and Colibri modules rust: ptr: add projection infrastructure 2026-03-07T22:06:17+00:00 Gary Guo gary@garyguo.net 2026-03-02T16:42:35+00:00 f41941aab3acd33f13d65a2ae496329bc8ae4de0 Add a generic infrastructure for performing field and index projections on raw pointers. This will form the basis of performing I/O projections. Pointers manipulations are intentionally using the safe wrapping variants instead of the unsafe variants, as the latter requires pointers to be inside an allocation which is not necessarily true for I/O pointers. This projection macro protects against rogue `Deref` implementation, which can causes the projected pointer to be outside the bounds of starting pointer. This is extremely unlikely and Rust has a lint to catch this, but is unsoundness regardless. The protection works by inducing type inference ambiguity when `Deref` is implemented. This projection macro also stops projecting into unaligned fields (i.e. fields of `#[repr(packed)]` structs), as misaligned pointers require special handling. This is implemented by attempting to create reference to projected field inside a `if false` block. Despite being unreachable, Rust still checks that they're not unaligned fields. The projection macro supports both fallible and infallible index projections. These are described in detail inside the documentation. Signed-off-by: Gary Guo <gary@garyguo.net> Reviewed-by: Benno Lossin <lossin@kernel.org> Acked-by: Miguel Ojeda <ojeda@kernel.org> Link: https://patch.msgid.link/20260302164239.284084-3-gary@kernel.org [ * Add intro-doc links where possible, * Fix typos and slightly improve wording, e.g. "as documentation describes" -> "as the documentation of [`Self::proj`] describes", * Add an empty line between regular and safety comments, before examples, and between logically independent comments, * Capitalize various safety comments. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> 
Add a generic infrastructure for performing field and index projections on
raw pointers. This will form the basis of performing I/O projections.

Pointers manipulations are intentionally using the safe wrapping variants
instead of the unsafe variants, as the latter requires pointers to be
inside an allocation which is not necessarily true for I/O pointers.

This projection macro protects against rogue `Deref` implementation, which
can causes the projected pointer to be outside the bounds of starting
pointer. This is extremely unlikely and Rust has a lint to catch this, but
is unsoundness regardless. The protection works by inducing type inference
ambiguity when `Deref` is implemented.

This projection macro also stops projecting into unaligned fields (i.e.
fields of `#[repr(packed)]` structs), as misaligned pointers require
special handling. This is implemented by attempting to create reference to
projected field inside a `if false` block. Despite being unreachable, Rust
still checks that they're not unaligned fields.

The projection macro supports both fallible and infallible index
projections. These are described in detail inside the documentation.

Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://patch.msgid.link/20260302164239.284084-3-gary@kernel.org
[ * Add intro-doc links where possible,
  * Fix typos and slightly improve wording, e.g. "as documentation
    describes" -> "as the documentation of [`Self::proj`] describes",
  * Add an empty line between regular and safety comments, before
    examples, and between logically independent comments,
  * Capitalize various safety comments.

    - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
rust: ptr: add `KnownSize` trait to support DST size info extraction 2026-03-07T22:02:45+00:00 Gary Guo gary@garyguo.net 2026-03-02T16:42:34+00:00 08da98f18f4f99aa16838397b76086d2d1d364b3 Add a `KnownSize` trait which is used obtain a size from a raw pointer's metadata. This makes it possible to obtain size information on a raw slice pointer. This is similar to Rust `core::mem::size_of_val_raw` which is not yet stable. Signed-off-by: Gary Guo <gary@garyguo.net> Reviewed-by: Benno Lossin <lossin@kernel.org> Acked-by: Miguel Ojeda <ojeda@kernel.org> Link: https://patch.msgid.link/20260302164239.284084-2-gary@kernel.org [ Fix wording in doc-comment. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> 
Add a `KnownSize` trait which is used obtain a size from a raw pointer's
metadata. This makes it possible to obtain size information on a raw slice
pointer. This is similar to Rust `core::mem::size_of_val_raw` which is not
yet stable.

Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://patch.msgid.link/20260302164239.284084-2-gary@kernel.org
[ Fix wording in doc-comment. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Merge tag 'driver-core-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core 2026-02-12T01:43:59+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-12T01:43:59+00:00 c6e62d002b7f0613f02d8707c80f2a7bd66808a0 Pull driver core updates from Danilo Krummrich: "Bus: - Ensure bus->match() is consistently called with the device lock held - Improve type safety of bus_find_device_by_acpi_dev() Devtmpfs: - Parse 'devtmpfs.mount=' boot parameter with kstrtoint() instead of simple_strtoul() - Avoid sparse warning by making devtmpfs_context_ops static IOMMU: - Do not register the qcom_smmu_tbu_driver in arm_smmu_device_probe() MAINTAINERS: - Add the new driver-core mailing list (driver-core@lists.linux.dev) to all relevant entries - Add missing tree location for "FIRMWARE LOADER (request_firmware)" - Add driver-model documentation to the "DRIVER CORE" entry - Add missing driver-core maintainers to the "AUXILIARY BUS" entry Misc: - Change return type of attribute_container_register() to void; it has always been infallible - Do not export sysfs_change_owner(), sysfs_file_change_owner() and device_change_owner() - Move devres_for_each_res() from the public devres header to drivers/base/base.h - Do not use a static struct device for the faux bus; allocate it dynamically Revocable: - Patches for the revocable synchronization primitive have been scheduled for v7.0-rc1, but have been reverted as they need some more refinement Rust: - Device: - Support dev_printk on all device types, not just the core Device struct; remove now-redundant .as_ref() calls in dev_* print calls - Devres: - Introduce an internal reference count in Devres<T> to avoid a deadlock condition in case of (indirect) nesting - DMA: - Allow drivers to tune the maximum DMA segment size via dma_set_max_seg_size() - I/O: - Introduce the concept of generic I/O backends to handle different kinds of device shared memory through a common interface. This enables higher-level concepts such as register abstractions, I/O slices, and field projections to be built generically on top. In a first step, introduce the Io, IoCapable<T>, and IoKnownSize trait hierarchy for sharing a common interface supporting offset validation and bound-checking logic between I/O backends. - Refactor MMIO to use the common I/O backend infrastructure - Misc: - Add __rust_helper annotations to C helpers for inlining into Rust code - Use "kernel vertical" style for imports - Replace kernel::c_str! with C string literals - Update ARef imports to use sync::aref - Use pin_init::zeroed() for struct auxiliary_device_id and debugfs file_operations initialization - Use LKMM atomic types in debugfs doc-tests - Various minor comment and documentation fixes - PCI: - Implement PCI configuration space accessors using the common I/O backend infrastructure - Document pci::Bar device endianness assumptions - SoC: - Abstractions for struct soc_device and struct soc_device_attribute - Sample driver for soc::Device" * tag 'driver-core-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (79 commits) rust: devres: fix race condition due to nesting rust: dma: add missing __rust_helper annotations samples: rust: pci: Remove some additional `.as_ref()` for `dev_*` print Revert "revocable: Revocable resource management" Revert "revocable: Add Kunit test cases" Revert "selftests: revocable: Add kselftest cases" driver core: remove device_change_owner() export sysfs: remove exports of sysfs_*change_owner() driver core: disable revocable code from build revocable: Add KUnit test for concurrent access revocable: fix SRCU index corruption by requiring caller-provided storage revocable: Add KUnit test for provider lifetime races revocable: Fix races in revocable_alloc() using RCU driver core: fix inverted "locked" suffix of driver_match_device() rust: io: move MIN_SIZE and io_addr_assert to IoKnownSize rust: pci: re-export ConfigSpace rust: dma: allow drivers to tune max segment size gpu: tyr: remove redundant `.as_ref()` for `dev_*` print rust: auxiliary: use `pin_init::zeroed()` for device ID rust: debugfs: use pin_init::zeroed() for file_operations ... 
Pull driver core updates from Danilo Krummrich:
 "Bus:

   - Ensure bus->match() is consistently called with the device lock
     held

   - Improve type safety of bus_find_device_by_acpi_dev()

  Devtmpfs:

   - Parse 'devtmpfs.mount=' boot parameter with kstrtoint() instead of
     simple_strtoul()

   - Avoid sparse warning by making devtmpfs_context_ops static

  IOMMU:

   - Do not register the qcom_smmu_tbu_driver in arm_smmu_device_probe()

  MAINTAINERS:

   - Add the new driver-core mailing list (driver-core@lists.linux.dev)
     to all relevant entries

   - Add missing tree location for "FIRMWARE LOADER (request_firmware)"

   - Add driver-model documentation to the "DRIVER CORE" entry

   - Add missing driver-core maintainers to the "AUXILIARY BUS" entry

  Misc:

   - Change return type of attribute_container_register() to void; it
     has always been infallible

   - Do not export sysfs_change_owner(), sysfs_file_change_owner() and
     device_change_owner()

   - Move devres_for_each_res() from the public devres header to
     drivers/base/base.h

   - Do not use a static struct device for the faux bus; allocate it
     dynamically

  Revocable:

   - Patches for the revocable synchronization primitive have been
     scheduled for v7.0-rc1, but have been reverted as they need some
     more refinement

  Rust:

   - Device:
      - Support dev_printk on all device types, not just the core Device
        struct; remove now-redundant .as_ref() calls in dev_* print
        calls

   - Devres:
      - Introduce an internal reference count in Devres<T> to avoid a
        deadlock condition in case of (indirect) nesting

   - DMA:
      - Allow drivers to tune the maximum DMA segment size via
        dma_set_max_seg_size()

   - I/O:
      - Introduce the concept of generic I/O backends to handle
        different kinds of device shared memory through a common
        interface.

        This enables higher-level concepts such as register
        abstractions, I/O slices, and field projections to be built
        generically on top.

        In a first step, introduce the Io, IoCapable<T>, and IoKnownSize
        trait hierarchy for sharing a common interface supporting offset
        validation and bound-checking logic between I/O backends.

      - Refactor MMIO to use the common I/O backend infrastructure

   - Misc:
      - Add __rust_helper annotations to C helpers for inlining into
        Rust code

      - Use "kernel vertical" style for imports

      - Replace kernel::c_str! with C string literals

      - Update ARef imports to use sync::aref

      - Use pin_init::zeroed() for struct auxiliary_device_id and
        debugfs file_operations initialization

      - Use LKMM atomic types in debugfs doc-tests

      - Various minor comment and documentation fixes

   - PCI:
      - Implement PCI configuration space accessors using the common I/O
        backend infrastructure

      - Document pci::Bar device endianness assumptions

   - SoC:
      - Abstractions for struct soc_device and struct soc_device_attribute

      - Sample driver for soc::Device"

* tag 'driver-core-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (79 commits)
  rust: devres: fix race condition due to nesting
  rust: dma: add missing __rust_helper annotations
  samples: rust: pci: Remove some additional `.as_ref()` for `dev_*` print
  Revert "revocable: Revocable resource management"
  Revert "revocable: Add Kunit test cases"
  Revert "selftests: revocable: Add kselftest cases"
  driver core: remove device_change_owner() export
  sysfs: remove exports of sysfs_*change_owner()
  driver core: disable revocable code from build
  revocable: Add KUnit test for concurrent access
  revocable: fix SRCU index corruption by requiring caller-provided storage
  revocable: Add KUnit test for provider lifetime races
  revocable: Fix races in revocable_alloc() using RCU
  driver core: fix inverted "locked" suffix of driver_match_device()
  rust: io: move MIN_SIZE and io_addr_assert to IoKnownSize
  rust: pci: re-export ConfigSpace
  rust: dma: allow drivers to tune max segment size
  gpu: tyr: remove redundant `.as_ref()` for `dev_*` print
  rust: auxiliary: use `pin_init::zeroed()` for device ID
  rust: debugfs: use pin_init::zeroed() for file_operations
  ...
Merge tag 'iommu-updates-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux 2026-02-12T00:36:08+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-12T00:36:08+00:00 1e0ea4dff0f46a3575b6882941dc7331c232d72c Pull iommu updates from Joerg Roedel: "Core changes: - Rust bindings for IO-pgtable code - IOMMU page allocation debugging support - Disable ATS during PCI resets Intel VT-d changes: - Skip dev-iotlb flush for inaccessible PCIe device - Flush cache for PASID table before using it - Use right invalidation method for SVA and NESTED domains - Ensure atomicity in context and PASID entry updates AMD-Vi changes: - Support for nested translations - Other minor improvements ARM-SMMU-v2 changes: - Configure SoC-specific prefetcher settings for Qualcomm's "MDSS" ARM-SMMU-v3 changes: - Improve CMDQ locking fairness for pathetically small queue sizes - Remove tracking of the IAS as this is only relevant for AArch32 and was causing C_BAD_STE errors - Add device-tree support for NVIDIA's CMDQV extension - Allow some hitless transitions for the 'MEV' and 'EATS' STE fields - Don't disable ATS for nested S1-bypass nested domains - Additions to the kunit selftests" * tag 'iommu-updates-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (54 commits) iommupt: Always add IOVA range to iotlb_gather in gather_range_pages() iommu/amd: serialize sequence allocation under concurrent TLB invalidations iommu/amd: Fix type of type parameter to amd_iommufd_hw_info() iommu/arm-smmu-v3: Do not set disable_ats unless vSTE is Translate iommu/arm-smmu-v3-test: Add nested s1bypass/s1dssbypass coverage iommu/arm-smmu-v3: Mark EATS_TRANS safe when computing the update sequence iommu/arm-smmu-v3: Mark STE MEV safe when computing the update sequence iommu/arm-smmu-v3: Add update_safe bits to fix STE update sequence iommu/arm-smmu-v3: Add device-tree support for CMDQV driver iommu/tegra241-cmdqv: Decouple driver from ACPI iommu/arm-smmu-qcom: Restore ACTLR settings for MDSS on sa8775p iommu/vt-d: Fix race condition during PASID entry replacement iommu/vt-d: Clear Present bit before tearing down context entry iommu/vt-d: Clear Present bit before tearing down PASID entry iommu/vt-d: Flush piotlb for SVM and Nested domain iommu/vt-d: Flush cache for PASID table before using it iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode iommu/vt-d: Skip dev-iotlb flush for inaccessible PCIe device without scalable mode rust: iommu: fix `srctree` link warning rust: iommu: fix Rust formatting ... 
Pull iommu updates from Joerg Roedel:
 "Core changes:
   - Rust bindings for IO-pgtable code
   - IOMMU page allocation debugging support
   - Disable ATS during PCI resets

  Intel VT-d changes:
   - Skip dev-iotlb flush for inaccessible PCIe device
   - Flush cache for PASID table before using it
   - Use right invalidation method for SVA and NESTED domains
   - Ensure atomicity in context and PASID entry updates

  AMD-Vi changes:
   - Support for nested translations
   - Other minor improvements

  ARM-SMMU-v2 changes:
   - Configure SoC-specific prefetcher settings for Qualcomm's "MDSS"

  ARM-SMMU-v3 changes:
   - Improve CMDQ locking fairness for pathetically small queue sizes
   - Remove tracking of the IAS as this is only relevant for AArch32 and
     was causing C_BAD_STE errors
   - Add device-tree support for NVIDIA's CMDQV extension
   - Allow some hitless transitions for the 'MEV' and 'EATS' STE fields
   - Don't disable ATS for nested S1-bypass nested domains
   - Additions to the kunit selftests"

* tag 'iommu-updates-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (54 commits)
  iommupt: Always add IOVA range to iotlb_gather in gather_range_pages()
  iommu/amd: serialize sequence allocation under concurrent TLB invalidations
  iommu/amd: Fix type of type parameter to amd_iommufd_hw_info()
  iommu/arm-smmu-v3: Do not set disable_ats unless vSTE is Translate
  iommu/arm-smmu-v3-test: Add nested s1bypass/s1dssbypass coverage
  iommu/arm-smmu-v3: Mark EATS_TRANS safe when computing the update sequence
  iommu/arm-smmu-v3: Mark STE MEV safe when computing the update sequence
  iommu/arm-smmu-v3: Add update_safe bits to fix STE update sequence
  iommu/arm-smmu-v3: Add device-tree support for CMDQV driver
  iommu/tegra241-cmdqv: Decouple driver from ACPI
  iommu/arm-smmu-qcom: Restore ACTLR settings for MDSS on sa8775p
  iommu/vt-d: Fix race condition during PASID entry replacement
  iommu/vt-d: Clear Present bit before tearing down context entry
  iommu/vt-d: Clear Present bit before tearing down PASID entry
  iommu/vt-d: Flush piotlb for SVM and Nested domain
  iommu/vt-d: Flush cache for PASID table before using it
  iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode
  iommu/vt-d: Skip dev-iotlb flush for inaccessible PCIe device without scalable mode
  rust: iommu: fix `srctree` link warning
  rust: iommu: fix Rust formatting
  ...
rust: safety: introduce `unsafe_precondition_assert!` macro 2026-02-02T07:10:48+00:00 Ritvik Gupta ritvikfoss@gmail.com 2025-10-07T21:50:28+00:00 b8d687c7eeb52d0353ac27c4f71594a2e6aa365f Introduce a new `safety` module containing `unsafe_precondition_assert!` macro. It is a wrapper around `debug_assert!`, intended for validating preconditions of unsafe function. When `CONFIG_RUST_DEBUG_ASSERTIONS` flag is enabled, this macro performs runtime checks to ensure that the preconditions for unsafe function hold. Otherwise, the macro is a no-op. Suggested-by: Miguel Ojeda <ojeda@kernel.org> Link: https://github.com/Rust-for-Linux/linux/issues/1162 Link: https://rust-for-linux.zulipchat.com/#narrow/channel/291566-Library/topic/.60unsafe_precondition_assert.60.20macro/with/528457452 Signed-off-by: Ritvik Gupta <ritvikfoss@gmail.com> Reviewed-by: Benno Lossin <lossin@kernel.org> Link: https://patch.msgid.link/20251007215034.213779-1-ritvikfoss@gmail.com [ Added trailing periods, intra-doc link, "a" in "is a no-op" and `()` to function reference. Removed plural in assertion message and title of macro. Reworded slightly. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> 
Introduce a new `safety` module containing `unsafe_precondition_assert!`
macro. It is a wrapper around `debug_assert!`, intended for validating
preconditions of unsafe function.

When `CONFIG_RUST_DEBUG_ASSERTIONS` flag is enabled, this macro performs
runtime checks to ensure that the preconditions for unsafe function hold.
Otherwise, the macro is a no-op.

Suggested-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://github.com/Rust-for-Linux/linux/issues/1162
Link: https://rust-for-linux.zulipchat.com/#narrow/channel/291566-Library/topic/.60unsafe_precondition_assert.60.20macro/with/528457452
Signed-off-by: Ritvik Gupta <ritvikfoss@gmail.com>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Link: https://patch.msgid.link/20251007215034.213779-1-ritvikfoss@gmail.com
[ Added trailing periods, intra-doc link, "a" in "is a no-op" and `()`
  to function reference. Removed plural in assertion message and title
  of macro. Reworded slightly. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
rust: add `impl_flags!` macro for defining common bitflag operations 2026-02-02T07:09:11+00:00 Filipe Xavier felipeaggger@gmail.com 2026-01-17T10:41:25+00:00 0e62e4f3e56cf6c44926db2ee82ff29b4a28ac03 We have seen a proliferation of `mod_whatever::foo::Flags` being defined with essentially the same implementation for `BitAnd`, `BitOr`, `.contains()` etc. This macro aims to bring a solution for this, allowing to generate these methods for user-defined structs. With some use cases in KMS and upcoming GPU drivers. Link: https://rust-for-linux.zulipchat.com/#narrow/channel/288089-General/topic/We.20really.20need.20a.20common.20.60Flags.60.20type Suggested-by: Daniel Almeida <daniel.almeida@collabora.com> Suggested-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Tested-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Signed-off-by: Filipe Xavier <felipeaggger@gmail.com> Link: https://patch.msgid.link/20260117-feat-add-bitmask-macro-v9-1-45ea1f00f846@gmail.com [ Implemented missing `BitXorAssign<$flag> for $flags`. Sorted `impl`s. Removed prelude addition for now -- I asked the team and they also felt it wasn't needed. We can always add it later on if needed. Fixed intra-doc link (by removing the sentence since it was superfluous anyway). Simplified `empty()` title. Reworded commit slightly. Added docs to enum variants in example to avoid 'missing_docs' lint when used in actual code. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> 
We have seen a proliferation of `mod_whatever::foo::Flags` being
defined with essentially the same implementation for `BitAnd`, `BitOr`,
`.contains()` etc.

This macro aims to bring a solution for this, allowing to generate these
methods for user-defined structs.  With some use cases in KMS and upcoming
GPU drivers.

Link: https://rust-for-linux.zulipchat.com/#narrow/channel/288089-General/topic/We.20really.20need.20a.20common.20.60Flags.60.20type
Suggested-by: Daniel Almeida <daniel.almeida@collabora.com>
Suggested-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Signed-off-by: Filipe Xavier <felipeaggger@gmail.com>
Link: https://patch.msgid.link/20260117-feat-add-bitmask-macro-v9-1-45ea1f00f846@gmail.com
[ Implemented missing `BitXorAssign<$flag> for $flags`. Sorted
  `impl`s. Removed prelude addition for now -- I asked the team and they
  also felt it wasn't needed. We can always add it later on if needed.
  Fixed intra-doc link (by removing the sentence since it was superfluous
  anyway). Simplified `empty()` title. Reworded commit slightly. Added
  docs to enum variants in example to avoid 'missing_docs' lint when used
  in actual code. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
rust: iommu: add io_pgtable abstraction 2026-01-19T09:28:31+00:00 Asahi Lina lina+kernel@asahilina.net 2026-01-18T10:08:08+00:00 2e2f6b0ef8551bf3bd8255729d27e3ad9451e562 This will be used by the Tyr driver to create and modify the page table of each address space on the GPU. Each time a mapping gets created or removed by userspace, Tyr will call into GPUVM, which will figure out which calls to map_pages and unmap_pages are required to map the data in question in the page table so that the GPU may access those pages when using that address space. The Rust type wraps the struct using a raw pointer rather than the usual Opaque+ARef approach because Opaque+ARef requires the target type to be refcounted. Signed-off-by: Asahi Lina <lina+kernel@asahilina.net> Acked-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Tested-by: Deborah Brouwer <deborah.brouwer@collabora.com> Co-developed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Gary Guo <gary@garyguo.net> Reviewed-by: Danilo Krummrich <dakr@kernel.org> [joro: Fixed up Rust import style] Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> 
This will be used by the Tyr driver to create and modify the page table
of each address space on the GPU. Each time a mapping gets created or
removed by userspace, Tyr will call into GPUVM, which will figure out
which calls to map_pages and unmap_pages are required to map the data in
question in the page table so that the GPU may access those pages when
using that address space.

The Rust type wraps the struct using a raw pointer rather than the usual
Opaque+ARef approach because Opaque+ARef requires the target type to be
refcounted.

Signed-off-by: Asahi Lina <lina+kernel@asahilina.net>
Acked-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Tested-by: Deborah Brouwer <deborah.brouwer@collabora.com>
Co-developed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
[joro: Fixed up Rust import style]
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
rust: Add soc_device support 2025-12-28T11:43:56+00:00 Matthew Maurer mmaurer@google.com 2025-12-26T20:17:07+00:00 057d44b057755f31a38a3cb040960e8727b93610 Allow SoC drivers in Rust to present metadata about their devices to userspace through /sys/devices/socX and other drivers to identify their properties through `soc_device_match`. Signed-off-by: Matthew Maurer <mmaurer@google.com> Link: https://patch.msgid.link/20251226-soc-bindings-v4-1-2c2fac08f820@google.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> 
Allow SoC drivers in Rust to present metadata about their devices to
userspace through /sys/devices/socX and other drivers to identify their
properties through `soc_device_match`.

Signed-off-by: Matthew Maurer <mmaurer@google.com>
Link: https://patch.msgid.link/20251226-soc-bindings-v4-1-2c2fac08f820@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Merge tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb 2025-12-07T02:42:12+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-12-07T02:42:12+00:00 f5e9d31e79c1ce8ba948ecac74d75e9c8d2f0c87 Pull USB/Thunderbolt updates from Greg KH: "Here is the big set of USB and Thunderbolt driver updates for 6.19-rc1. Nothing major here, just lots of tiny updates for most of the common USB drivers. Included in here are: - more xhci driver updates and fixes - Thunderbolt driver cleanups - usb serial driver updates - typec driver updates - USB tracepoint additions - dwc3 driver updates, including support for Apple hardware - lots of other smaller driver updates and cleanups All of these have been in linux-next for a while with no reported issues" * tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (161 commits) usb: gadget: tegra-xudc: Always reinitialize data toggle when clear halt USB: serial: option: move Telit 0x10c7 composition in the right place USB: serial: option: add Telit Cinterion FE910C04 new compositions usb: typec: ucsi: fix use-after-free caused by uec->work usb: typec: ucsi: fix probe failure in gaokun_ucsi_probe() usb: dwc3: core: Remove redundant comment in core init usb: phy: Initialize struct usb_phy list_head USB: serial: option: add Foxconn T99W760 usb: usb-storage: No additional quirks need to be added to the EL-R12 optical drive. usb: typec: hd3ss3220: Enable VBUS based on ID pin state dt-bindings: usb: ti,hd3ss3220: Add support for VBUS based on ID state usb: typec: anx7411: add WQ_PERCPU to alloc_workqueue users USB: add WQ_PERCPU to alloc_workqueue users dt-bindings: usb: dwc3-xilinx: Describe the reset constraint for the versal platform drivers/usb/storage: use min() instead of min_t() usb: raw-gadget: cap raw_io transfer length to KMALLOC_MAX_SIZE usb: ohci-da8xx: remove unused platform data usb: gadget: functionfs: use dma_buf_unmap_attachment_unlocked() helper usb: uas: reduce time under spinlock usb: dwc3: eic7700: Add EIC7700 USB driver ... 
Pull USB/Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt driver updates for
  6.19-rc1. Nothing major here, just lots of tiny updates for most of
  the common USB drivers. Included in here are:

   - more xhci driver updates and fixes

   - Thunderbolt driver cleanups

   - usb serial driver updates

   - typec driver updates

   - USB tracepoint additions

   - dwc3 driver updates, including support for Apple hardware

   - lots of other smaller driver updates and cleanups

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (161 commits)
  usb: gadget: tegra-xudc: Always reinitialize data toggle when clear halt
  USB: serial: option: move Telit 0x10c7 composition in the right place
  USB: serial: option: add Telit Cinterion FE910C04 new compositions
  usb: typec: ucsi: fix use-after-free caused by uec->work
  usb: typec: ucsi: fix probe failure in gaokun_ucsi_probe()
  usb: dwc3: core: Remove redundant comment in core init
  usb: phy: Initialize struct usb_phy list_head
  USB: serial: option: add Foxconn T99W760
  usb: usb-storage: No additional quirks need to be added to the EL-R12 optical drive.
  usb: typec: hd3ss3220: Enable VBUS based on ID pin state
  dt-bindings: usb: ti,hd3ss3220: Add support for VBUS based on ID state
  usb: typec: anx7411: add WQ_PERCPU to alloc_workqueue users
  USB: add WQ_PERCPU to alloc_workqueue users
  dt-bindings: usb: dwc3-xilinx: Describe the reset constraint for the versal platform
  drivers/usb/storage: use min() instead of min_t()
  usb: raw-gadget: cap raw_io transfer length to KMALLOC_MAX_SIZE
  usb: ohci-da8xx: remove unused platform data
  usb: gadget: functionfs: use dma_buf_unmap_attachment_unlocked() helper
  usb: uas: reduce time under spinlock
  usb: dwc3: eic7700: Add EIC7700 USB driver
  ...
Merge tag 'modules-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux 2025-12-06T16:27:07+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-12-06T16:27:07+00:00 c84d574698bad2c02aad506dfe712f83cbe3b771 Pull module updates from Daniel Gomez: "Rust module parameter support: - Add Rust module parameter support, enabling Rust kernel modules to declare and use module parameters. The rust_minimal sample module demonstrates this, and the rust null block driver will be the first to use it in the next cycle. This also adds the Rust module files under the modules subsystem as agreed between the Rust and modules maintainers. Hardening: - Add compile-time check for embedded NUL characters in MODULE_*() macros. This module metadata was once used (and maybe still) to bypass license enforcement (LWN article from 2003): https://lwn.net/Articles/82305/ [1] MAINTAINERS: - Add Aaron Tomlin as reviewer for the Modules subsystem" * tag 'modules-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux: MAINTAINERS: Add myself as reviewer for module support module: Add compile-time check for embedded NUL characters media: radio: si470x: Fix DRIVER_AUTHOR macro definition media: dvb-usb-v2: lmedm04: Fix firmware macro definitions modules: add rust modules files to MAINTAINERS rust: samples: add a module parameter to the rust_minimal sample rust: module: update the module macro with module parameter support rust: module: use a reference in macros::module::module rust: introduce module_param module rust: str: add radix prefixed integer parsing functions rust: sync: add `SetOnce` 
Pull module updates from Daniel Gomez:
 "Rust module parameter support:

   - Add Rust module parameter support, enabling Rust kernel modules to
     declare and use module parameters. The rust_minimal sample module
     demonstrates this, and the rust null block driver will be the first
     to use it in the next cycle. This also adds the Rust module files
     under the modules subsystem as agreed between the Rust and modules
     maintainers.

  Hardening:

   - Add compile-time check for embedded NUL characters in MODULE_*()
     macros. This module metadata was once used (and maybe still) to
     bypass license enforcement (LWN article from 2003):

	https://lwn.net/Articles/82305/ [1]

  MAINTAINERS:

   - Add Aaron Tomlin as reviewer for the Modules subsystem"

* tag 'modules-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux:
  MAINTAINERS: Add myself as reviewer for module support
  module: Add compile-time check for embedded NUL characters
  media: radio: si470x: Fix DRIVER_AUTHOR macro definition
  media: dvb-usb-v2: lmedm04: Fix firmware macro definitions
  modules: add rust modules files to MAINTAINERS
  rust: samples: add a module parameter to the rust_minimal sample
  rust: module: update the module macro with module parameter support
  rust: module: use a reference in macros::module::module
  rust: introduce module_param module
  rust: str: add radix prefixed integer parsing functions
  rust: sync: add `SetOnce`