Commit Graph

251 Commits

Author SHA1 Message Date
Boqun Feng
ecc8e9fbaa rust: helpers: Generify the definitions of rust_helper_*_{read,set}*
To support atomic pointers, more {read,set} helpers will be introduced,
hence define macros to generate these helpers to ease the introduction
of the future helpers.

Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260117122243.24404-2-boqun.feng@gmail.com
Link: https://patch.msgid.link/20260303201701.12204-4-boqun@kernel.org
2026-03-08 11:06:48 +01:00
Linus Torvalds
17f8d20093 USB / Thunderbolt changes for 7.0-rc1
Here is the "big" set of USB and Thunderbolt driver updates for 7.0-rc1.
 Overall more lines were removed than added, thanks to dropping the
 obsolete isp1362 USB host controller driver, always a nice change.
 
 Other than that, nothing major happening here, highlights are:
   - lots of dwc3 driver updates and new hardware support added
   - usb gadget function driver updates
   - usb phy driver updates
   - typec driver updates and additions
   - USB rust binding updates for syntax and formatting changes
   - more usb serial device ids added
   - other smaller USB core and driver updates and additions
 
 All of these have been in linux-next for a long time, with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the "big" set of USB and Thunderbolt driver updates for
  7.0-rc1. Overall more lines were removed than added, thanks to
  dropping the obsolete isp1362 USB host controller driver, always a
  nice change.

  Other than that, nothing major happening here, highlights are:

   - lots of dwc3 driver updates and new hardware support added

   - usb gadget function driver updates

   - usb phy driver updates

   - typec driver updates and additions

   - USB rust binding updates for syntax and formatting changes

   - more usb serial device ids added

   - other smaller USB core and driver updates and additions

  All of these have been in linux-next for a long time, with no reported
  problems"

* tag 'usb-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (77 commits)
  usb: typec: ucsi: Add Thunderbolt alternate mode support
  usb: typec: hd3ss3220: Check if regulator needs to be switched
  usb: phy: tegra: parametrize PORTSC1 register offset
  usb: phy: tegra: parametrize HSIC PTS value
  usb: phy: tegra: return error value from utmi_wait_register
  usb: phy: tegra: cosmetic fixes
  dt-bindings: usb: renesas,usbhs: Add RZ/G3E SoC support
  usb: dwc2: fix resume failure if dr_mode is host
  usb: cdns3: fix role switching during resume
  usb: dwc3: gadget: Move vbus draw to workqueue context
  USB: serial: option: add Telit FN920C04 RNDIS compositions
  usb: dwc3: Log dwc3 address in traces
  usb: gadget: tegra-xudc: Add handling for BLCG_COREPLL_PWRDN
  usb: phy: tegra: add HSIC support
  usb: phy: tegra: use phy type directly
  usb: typec: ucsi: Enforce mode selection for cros_ec_ucsi
  usb: typec: ucsi: Support mode selection to activate altmodes
  usb: typec: Introduce mode_selection bit
  usb: typec: Implement mode selection
  usb: typec: Expose alternate mode priority via sysfs
  ...
2026-02-17 09:36:43 -08:00
Linus Torvalds
505d195b0f Char/Misc/IIO driver changes for 7.0-rc1
Here is the big set of char/misc/iio and other smaller driver subsystem
 changes for 7.0-rc1.  Lots of little things in here, including:
   - Loads of iio driver changes and updates and additions
   - gpib driver updates
   - interconnect driver updates
   - i3c driver updates
   - hwtracing (coresight and intel) driver updates
   - deletion of the obsolete mwave driver
   - binder driver updates (rust and c versions)
   - mhi driver updates (causing a merge conflict, see below)
   - mei driver updates
   - fsi driver updates
   - eeprom driver updates
   - lots of other small char and misc driver updates and cleanups
 
 All of these have been in linux-next for a while, with no reported
 issues except for a merge conflict with your tree due to the mhi driver
 changes in the drivers/net/wireless/ath/ath12k/mhi.c file.  To fix that
 up, just delete the "auto_queue" structure fields being set, see this
 message for the full change needed:
 	https://lore.kernel.org/r/aXD6X23btw8s-RZP@sirena.org.uk
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc/IIO driver updates from Greg KH:
 "Here is the big set of char/misc/iio and other smaller driver
  subsystem changes for 7.0-rc1. Lots of little things in here,
  including:

   - Loads of iio driver changes and updates and additions

   - gpib driver updates

   - interconnect driver updates

   - i3c driver updates

   - hwtracing (coresight and intel) driver updates

   - deletion of the obsolete mwave driver

   - binder driver updates (rust and c versions)

   - mhi driver updates (causing a merge conflict, see below)

   - mei driver updates

   - fsi driver updates

   - eeprom driver updates

   - lots of other small char and misc driver updates and cleanups

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

* tag 'char-misc-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (297 commits)
  mux: mmio: fix regmap leak on probe failure
  rust_binder: return p from rust_binder_transaction_target_node()
  drivers: android: binder: Update ARef imports from sync::aref
  rust_binder: fix needless borrow in context.rs
  iio: magn: mmc5633: Fix Kconfig for combination of I3C as module and driver builtin
  iio: sca3000: Fix a resource leak in sca3000_probe()
  iio: proximity: rfd77402: Add interrupt handling support
  iio: proximity: rfd77402: Document device private data structure
  iio: proximity: rfd77402: Use devm-managed mutex initialization
  iio: proximity: rfd77402: Use kernel helper for result polling
  iio: proximity: rfd77402: Align polling timeout with datasheet
  iio: cros_ec: Allow enabling/disabling calibration mode
  iio: frequency: ad9523: correct kernel-doc bad line warning
  iio: buffer: buffer_impl.h: fix kernel-doc warnings
  iio: gyro: itg3200: Fix unchecked return value in read_raw
  MAINTAINERS: add entry for ADE9000 driver
  iio: accel: sca3000: remove unused last_timestamp field
  iio: accel: adxl372: remove unused int2_bitmask field
  iio: adc: ad7766: Use iio_trigger_generic_data_rdy_poll()
  iio: magnetometer: Remove IRQF_ONESHOT
  ...
2026-02-17 09:11:04 -08:00
Linus Torvalds
c6e62d002b Driver core changes for 7.0-rc1
- 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
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Merge tag 'driver-core-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core

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
  ...
2026-02-11 17:43:59 -08:00
Linus Torvalds
939faf71cf drm for 7.0-rc1
core:
 - drop kgdb support
 - replace system workqueue with percpu
 - account for property blobs in memcg
 - MAINTAINERS updates for xe + buddy
 
 rust:
 - Fix documentation for Registration constructors.
 - Use pin_init::zeroed() for fops initialization.
 - Annotate DRM helpers with __rust_helper.
 - Improve safety documentation for gem::Object::new().
 - Update AlwaysRefCounted imports.
 - mm: Prevent integer overflow in page_align().
 
 atomic:
 - add drm_device pointer to drm_private_obj
 - introduce gamma/degamma LUT size check
 
 buddy:
 - fix free_trees memory leak
 - prevent BUG_ON
 
 bridge:
 - introduce drm_bridge_unplug/enter/exit
 - add connector argument to .hpd_notify
 - lots of recounting conversions
 - convert rockchip inno hdmi to bridge
 - lontium-lt9611uxc: switch to HDMI audio helpers
 - dw-hdmi-qp: add support for HPD-less setups
 - Algoltek AG6311 support
 
 panels:
 - edp: CSW MNE007QB3-1, AUO B140HAN06.4, AUO B140QAX01.H
 - st75751: add SPI support
 - Sitronix ST7920, Samsung LTL106HL02
 - LG LH546WF1-ED01, HannStar HSD156J
 - BOE NV130WUM-T08
 - Innolux G150XGE-L05
 - Anbernic RG-DS
 
 dma-buf:
 - improve sg_table debugging
 - add tracepoints
 - call clear_page instead of memset
 - start to introduce cgroup memory accounting in heaps
 - remove sysfs stats
 
 dma-fence:
 - add new helpers
 
 dp:
 - mst: avoid oob access with vcpi=0
 
 hdmi:
 - limit infoframes exposure to userspace
 
 gem:
 - reduce page table overhead with THP
 - fix leak in drm_gem_get_unmapped_area
 
 gpuvm:
 - API sanitation for rust bindings
 
 sched:
 - introduce new helpers
 
 panic:
 - report invalid panic modes
 - add kunit tests
 
 i915/xe display:
 - Expose sharpness only if num_scalers is >= 2
 - Add initial Xe3P_LPD for NVL
 - BMG FBC support
 - Add MTL+ platforms to support dpll framework
 _ fix DIMM_S DRM decoding on ICL
 - Return to using AUX interrupts
 - PSR/Panel replay refactoring
 - use consolidation HDMI tables
 - Xe3_LPD CD2X dividier changes
 
 xe:
 - vfio: add vfio_pci for intel GPU
 - multi queue support
 - dynamic pagemaps and multi-device SVM
 - expose temp attribs in hwmon
 - NO_COMPRESSION bo flag
 - expose MERT OA unit
 - sysfs survivability refactor
 - SRIOV PF: add MERT support
 - enable SR-IOV VF migration
 - Enable I2C/NVM on Crescent Island
 - Xe3p page reclaimation support
 - introduce SRIOV scheduler groups
 - add SoC remappt support in system controller
 - insert compiler barriers in GuC code
 - define NVL GuC firmware
 - handle GT resume failure
 - fix drm scheduler layering violations
 - enable GSC loading and PXP for PTL
 - disable GuC Power DCC strategy on PTL
 - unregister drm device on probe error
 
 i915:
 - move to kernel standard fault injection
 - bump recommended GuC version for DG2 and MTL
 
 amdgpu:
 - SMUIO 15.x, PSP 15.x support
 - IH 6.1.1/7.1 support
 - MMHUB 3.4/4.2 support
 - GC 11.5.4/12.1 support
 - SDMA 6.1.4/7.1/7.11.4 support
 - JPEG 5.3 support
 - UserQ updates
 - GC 9 gfx queue reset support
 - TTM memory ops parallelization
 - convert legacy logging to new helpers
 - DC analog fixes
 
 amdkfd:
 - GC 11.5.4/12.1 suppport
 - SDMA 6.1.4/7.1 support
 - per context support
 - increase kfd process hash table
 - Reserved SDMA rework
 
 radeon:
 - convert legacy logging to new helpers
 - use devm for i2c adapters
 
 msm:
 - GPU
   - Document a612/RGMU dt bindings
   - UBWC 6.0 support (for A840 / Kaanapali)
   - a225 support
 - DPU:
   - Switched to use virtual planes by default
   - Fixed DSI CMD panels on DPU 3.x
   - Rewrote format handling to remove intermediate representation
   - Fixed watchdog on DPU 8.x+
   - Fixed TE / Vsync source setting on DPU 8.x+
   - Added 3D_Mux on SC7280
   - Kaanapali platform support
   - Fixed UBWC register programming
   - Made RM reserve DSPP-enabled mixers for CRTCs with LMs.
   - Gamma correction support
 - DP:
   - Enabled support for eDP 1.4+ link rate tables
   - Fixed MDSS1 DP indices on SA8775P, making them to work
   - Fixed msm_dp_ctrl_config_msa() to work with LLVM 20
 - DSI:
   - Documented QCS8300 as compatible with SA8775P
   - Kaanapali platform support
 - DSI PHY:
   - switched to divider_determine_rate()
 - MDP5:
   - Dropped support for MSM8998, SDM660 and SDM630 (switched over
     to DPU)
 -  MDSS:
   - Kaanapali platform support
   - Fixed UBWC register programming
 
 nova-core:
 - Prepare for Turing support. This includes parsing and handling
   Turing-specific firmware headers and sections as well as a Turing
   Falcon HAL implementation.
 - Get rid of the Result<impl PinInit<T, E>> anti-pattern.
 - Relocate initializer-specific code into the appropriate initializer.
 - Use CStr::from_bytes_until_nul() to remove custom helpers.
 - Improve handling of unexpected firmware values.
 - Clean up redundant debug prints.
 - Replace c_str!() with native Rust C-string literals.
 - Update nova-core task list.
 
 nova:
 - Align GEM object size to system page size.
 
 tyr:
 - Use generated uAPI bindings for GpuInfo.
 - Replace manual sleeps with read_poll_timeout().
 - Replace c_str!() with native Rust C-string literals.
 - Suppress warnings for unread fields.
 - Fix incorrect register name in print statement.
 
 nouveau:
 - fix big page table support races in PTE management
 - improve reclocking on tegra 186+
 
 amdxdna:
 - fix suspend race conditions
 - improve handling of zero tail pointers
 - fix cu_idx overwritten during command setup
 - enable hardware context priority
 - remove NPU2 support
 - update message buffer allocation requirements
 - update firmware version check
 
 ast:
 - support imported cursor buffers
 - big endian fixes
 
 etnaviv:
 - add PPU flop reset support
 
 imagination:
 - add AM62P support
 - introduce hw version checks
 
 ivpu:
 - implement warm boot flow
 
 panfrost:
 - add bo sync ioctl
 - add GPU_PM_RT support for RZ/G3E SoC
 
 panthor:
 - add bo sync ioctl
 - enable timestamp propagation
 - scheduler robustness improvements
 - VM termination fixes
 - huge page support
 
 rockchip:
 - RK3368 HDMI Support
 - get rid of atomic_check fixups
 - RK3506 support
 - RK3576/RK3588 improved HPD handling
 
 rz-du:
 - RZ/V2H(P) MIPI-DSI Support
 
 v3d:
 - fix DMA segment size
 - convert to new logging helpers
 
 mediatek:
 - move DP training to hotplug thread
 - convert logging to new helpers
 - add support for HS speed DSI
 - Genio 510/700/1200-EVK, Radxa NIO-12L HDMI support
 
 atmel-hlcdc:
 - switch to drmm resource
 - support nomodeset
 - use newer helpers
 
 hisilicon:
 - fix various DP bugs
 
 renesas:
 - fix kernel panic on reboot
 
 exynos:
 - fix vidi_connection_ioctl using wrong device
 - fix vidi_connection deref user ptr
 - fix concurrency regression with vidi_context
 
 vkms:
 - add configfs support for display configuration
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Merge tag 'drm-next-2026-02-11' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "Highlights:
   - amdgpu support for lots of new IP blocks which means newer GPUs
   - xe has a lot of SR-IOV and SVM improvements
   - lots of intel display refactoring across i915/xe
   - msm has more support for gen8 platforms
   - Given up on kgdb/kms integration, it's too hard on modern hw

  core:
   - drop kgdb support
   - replace system workqueue with percpu
   - account for property blobs in memcg
   - MAINTAINERS updates for xe + buddy

  rust:
   - Fix documentation for Registration constructors
   - Use pin_init::zeroed() for fops initialization
   - Annotate DRM helpers with __rust_helper
   - Improve safety documentation for gem::Object::new()
   - Update AlwaysRefCounted imports
   - mm: Prevent integer overflow in page_align()

  atomic:
   - add drm_device pointer to drm_private_obj
   - introduce gamma/degamma LUT size check

  buddy:
   - fix free_trees memory leak
   - prevent BUG_ON

  bridge:
   - introduce drm_bridge_unplug/enter/exit
   - add connector argument to .hpd_notify
   - lots of recounting conversions
   - convert rockchip inno hdmi to bridge
   - lontium-lt9611uxc: switch to HDMI audio helpers
   - dw-hdmi-qp: add support for HPD-less setups
   - Algoltek AG6311 support

  panels:
   - edp: CSW MNE007QB3-1, AUO B140HAN06.4, AUO B140QAX01.H
   - st75751: add SPI support
   - Sitronix ST7920, Samsung LTL106HL02
   - LG LH546WF1-ED01, HannStar HSD156J
   - BOE NV130WUM-T08
   - Innolux G150XGE-L05
   - Anbernic RG-DS

  dma-buf:
   - improve sg_table debugging
   - add tracepoints
   - call clear_page instead of memset
   - start to introduce cgroup memory accounting in heaps
   - remove sysfs stats

  dma-fence:
   - add new helpers

  dp:
   - mst: avoid oob access with vcpi=0

  hdmi:
   - limit infoframes exposure to userspace

  gem:
   - reduce page table overhead with THP
   - fix leak in drm_gem_get_unmapped_area

  gpuvm:
   - API sanitation for rust bindings

  sched:
   - introduce new helpers

  panic:
   - report invalid panic modes
   - add kunit tests

  i915/xe display:
   - Expose sharpness only if num_scalers is >= 2
   - Add initial Xe3P_LPD for NVL
   - BMG FBC support
   - Add MTL+ platforms to support dpll framework
   _ fix DIMM_S DRM decoding on ICL
   - Return to using AUX interrupts
   - PSR/Panel replay refactoring
   - use consolidation HDMI tables
   - Xe3_LPD CD2X dividier changes

  xe:
   - vfio: add vfio_pci for intel GPU
   - multi queue support
   - dynamic pagemaps and multi-device SVM
   - expose temp attribs in hwmon
   - NO_COMPRESSION bo flag
   - expose MERT OA unit
   - sysfs survivability refactor
   - SRIOV PF: add MERT support
   - enable SR-IOV VF migration
   - Enable I2C/NVM on Crescent Island
   - Xe3p page reclaimation support
   - introduce SRIOV scheduler groups
   - add SoC remappt support in system controller
   - insert compiler barriers in GuC code
   - define NVL GuC firmware
   - handle GT resume failure
   - fix drm scheduler layering violations
   - enable GSC loading and PXP for PTL
   - disable GuC Power DCC strategy on PTL
   - unregister drm device on probe error

  i915:
   - move to kernel standard fault injection
   - bump recommended GuC version for DG2 and MTL

  amdgpu:
   - SMUIO 15.x, PSP 15.x support
   - IH 6.1.1/7.1 support
   - MMHUB 3.4/4.2 support
   - GC 11.5.4/12.1 support
   - SDMA 6.1.4/7.1/7.11.4 support
   - JPEG 5.3 support
   - UserQ updates
   - GC 9 gfx queue reset support
   - TTM memory ops parallelization
   - convert legacy logging to new helpers
   - DC analog fixes

  amdkfd:
   - GC 11.5.4/12.1 suppport
   - SDMA 6.1.4/7.1 support
   - per context support
   - increase kfd process hash table
   - Reserved SDMA rework

  radeon:
   - convert legacy logging to new helpers
   - use devm for i2c adapters

  msm:
   - GPU
      - Document a612/RGMU dt bindings
      - UBWC 6.0 support (for A840 / Kaanapali)
      - a225 support
   - DPU:
      - Switch to use virtual planes by default
      - Fix DSI CMD panels on DPU 3.x
      - Rewrite format handling to remove intermediate representation
      - Fix watchdog on DPU 8.x+
      - Fix TE / Vsync source setting on DPU 8.x+
      - Add 3D_Mux on SC7280
      - Kaanapali platform support
      - Fix UBWC register programming
      - Make RM reserve DSPP-enabled mixers for CRTCs with LMs
      - Gamma correction support
   - DP:
      - Enable support for eDP 1.4+ link rate tables
      - Fix MDSS1 DP indices on SA8775P, making them to work
      - Fix msm_dp_ctrl_config_msa() to work with LLVM 20
   - DSI:
      - Document QCS8300 as compatible with SA8775P
      - Kaanapali platform support
   - DSI PHY:
      - switch to divider_determine_rate()
   - MDP5:
      - Drop support for MSM8998, SDM660 and SDM630 (switch over to DPU)
   -  MDSS:
      - Kaanapali platform support
      - Fixed UBWC register programming

  nova-core:
   - Prepare for Turing support. This includes parsing and handling
     Turing-specific firmware headers and sections as well as a Turing
     Falcon HAL implementation
   - Get rid of the Result<impl PinInit<T, E>> anti-pattern
   - Relocate initializer-specific code into the appropriate initializer
   - Use CStr::from_bytes_until_nul() to remove custom helpers
   - Improve handling of unexpected firmware values
   - Clean up redundant debug prints
   - Replace c_str!() with native Rust C-string literals
   - Update nova-core task list

  nova:
   - Align GEM object size to system page size

  tyr:
   - Use generated uAPI bindings for GpuInfo
   - Replace manual sleeps with read_poll_timeout()
   - Replace c_str!() with native Rust C-string literals
   - Suppress warnings for unread fields
   - Fix incorrect register name in print statement

  nouveau:
   - fix big page table support races in PTE management
   - improve reclocking on tegra 186+

  amdxdna:
   - fix suspend race conditions
   - improve handling of zero tail pointers
   - fix cu_idx overwritten during command setup
   - enable hardware context priority
   - remove NPU2 support
   - update message buffer allocation requirements
   - update firmware version check

  ast:
   - support imported cursor buffers
   - big endian fixes

  etnaviv:
   - add PPU flop reset support

  imagination:
   - add AM62P support
   - introduce hw version checks

  ivpu:
   - implement warm boot flow

  panfrost:
   - add bo sync ioctl
   - add GPU_PM_RT support for RZ/G3E SoC

  panthor:
   - add bo sync ioctl
   - enable timestamp propagation
   - scheduler robustness improvements
   - VM termination fixes
   - huge page support

  rockchip:
   - RK3368 HDMI Support
   - get rid of atomic_check fixups
   - RK3506 support
   - RK3576/RK3588 improved HPD handling

  rz-du:
   - RZ/V2H(P) MIPI-DSI Support

  v3d:
   - fix DMA segment size
   - convert to new logging helpers

  mediatek:
   - move DP training to hotplug thread
   - convert logging to new helpers
   - add support for HS speed DSI
   - Genio 510/700/1200-EVK, Radxa NIO-12L HDMI support

  atmel-hlcdc:
   - switch to drmm resource
   - support nomodeset
   - use newer helpers

  hisilicon:
   - fix various DP bugs

  renesas:
   - fix kernel panic on reboot

  exynos:
   - fix vidi_connection_ioctl using wrong device
   - fix vidi_connection deref user ptr
   - fix concurrency regression with vidi_context

  vkms:
   - add configfs support for display configuration

* tag 'drm-next-2026-02-11' of https://gitlab.freedesktop.org/drm/kernel: (1610 commits)
  drm/xe/pm: Disable D3Cold for BMG only on specific platforms
  drm/xe: Fix kerneldoc for xe_tlb_inval_job_alloc_dep
  drm/xe: Fix kerneldoc for xe_gt_tlb_inval_init_early
  drm/xe: Fix kerneldoc for xe_migrate_exec_queue
  drm/xe/query: Fix topology query pointer advance
  drm/xe/guc: Fix kernel-doc warning in GuC scheduler ABI header
  drm/xe/guc: Fix CFI violation in debugfs access.
  accel/amdxdna: Move RPM resume into job run function
  accel/amdxdna: Fix incorrect DPM level after suspend/resume
  nouveau/vmm: start tracking if the LPT PTE is valid. (v6)
  nouveau/vmm: increase size of vmm pte tracker struct to u32 (v2)
  nouveau/vmm: rewrite pte tracker using a struct and bitfields.
  accel/amdxdna: Fix incorrect error code returned for failed chain command
  accel/amdxdna: Remove hardware context status
  drm/bridge: imx8qxp-pixel-combiner: Fix bailout for imx8qxp_pc_bridge_probe()
  drm/panel: ilitek-ili9882t: Remove duplicate initializers in tianma_il79900a_dsc
  drm/i915/display: fix the pixel normalization handling for xe3p_lpd
  drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free
  drm/exynos: vidi: fix to avoid directly dereferencing user pointer
  drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()
  ...
2026-02-11 12:55:44 -08:00
Linus Torvalds
c371f62da7 pwm: Changes for v7.0-rc1
There are a few patches adapting to changes in Rust land which seems to
 be the norm since there is a pwm driver written in Rust. Other than that
 just a few cleanups and a single fix for the tiehrpwm driver that came
 in too late for making it into v6.19.
 
 Thanks to Andy Shevchenko, Bartosz Golaszewski, Daniel Almeida and
 Michal Wilczynski for reviews in this cycle, and to Alice Ryhl, Ben
 Zong-You Xie, Gokul Praveen, Kari Argillander, Markus Probst, Raag
 Jadav, Shankari Anand, Tamir Duberstein and Vladimir Zapolskiy for code
 contributions.
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Merge tag 'pwm/for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux

Pull pwm updates from Uwe Kleine-König:
 "There are a few patches adapting to changes in Rust land which seems
  to be the norm since there is a pwm driver written in Rust. Other than
  that just a few cleanups and a single fix for the tiehrpwm driver that
  came in too late for making it into v6.19.

  Thanks to Andy Shevchenko, Bartosz Golaszewski, Daniel Almeida and
  Michal Wilczynski for reviews in this cycle, and to Alice Ryhl, Ben
  Zong-You Xie, Gokul Praveen, Kari Argillander, Markus Probst, Raag
  Jadav, Shankari Anand, Tamir Duberstein and Vladimir Zapolskiy for
  code contributions"

* tag 'pwm/for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux:
  pwm: Remove redundant check in pwm_ops_check()
  pwm: tiehrpwm: Enable pwmchip's parent device before setting configuration
  pwm: Update MAINTAINER entry
  rust: pwm: Add __rust_helper to helpers
  rust: pwm: Simplify to_result call sites and unsafe blocks
  rust: pwm: Fix potential memory leak on init error
  dt-bindings: pwm: nxp,lpc32xx-pwm: Specify clocks property as mandatory
  pwm: th1520: Replace `kernel::c_str!` with C-Strings
  pwm: dwc: Use size macro
  pwm: Emit native configuration in /sys/kernel/debug/pwm
  rust: pwm: Add UnregisteredChip wrapper around Chip
  rust: pwm: Update ARef and AlwaysRefCounted imports to use sync::aref
2026-02-11 09:52:33 -08:00
Linus Torvalds
f6c42489fe regulator: Updates for v7.0
There's a bunch of new drivers here, plus a lot of hardening for the
 supply resolution code which allow us to support systems where we have
 two PMICs each of which has regulators supplied by the other.  This did
 work a long time ago but got broken as part of improved integration with
 the device model, it's fairly rare so nobody noticed.
 
  - Improvements for supply handling from André Draszik to allow systems
    with two PMICs with supply/consumer relationships in both
    directions to instantiate.
  - New drivers for Maxim MAX776750, Realtek RT8902, Samsung S2MPG11,
    Texas Instuments TPS65185.
 
 This have also pulls in some MFD updates which are build dependencies
 for the Samsung S2MPG11 support.
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Merge tag 'regulator-v6.20' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "There's a bunch of new drivers here, plus a lot of hardening for the
  supply resolution code which allow us to support systems where we have
  two PMICs each of which has regulators supplied by the other. This did
  work a long time ago but got broken as part of improved integration
  with the device model, it's fairly rare so nobody noticed.

   - Improvements for supply handling from André Draszik to allow
     systems with two PMICs with supply/consumer relationships in both
     directions to instantiate.

   - New drivers for Maxim MAX776750, Realtek RT8902, Samsung S2MPG11,
     Texas Instuments TPS65185.

  This have also pulls in some MFD updates which are build dependencies
  for the Samsung S2MPG11 support"

* tag 'regulator-v6.20' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (42 commits)
  regulator: s2mps11: more descriptive gpio consumer name
  regulator: s2mps11: add S2MPG11 regulator
  regulator: s2mps11: refactor S2MPG10 regulator macros for S2MPG11 reuse
  regulator: s2mps11: refactor S2MPG10 ::set_voltage_time() for S2MPG11 reuse
  regulator: s2mps11: add S2MPG10 regulator
  regulator: s2mps11: refactor handling of external rail control
  regulator: s2mps11: update node parsing (allow -supply properties)
  regulator: s2mps11: place constants on right side of comparison tests
  regulator: s2mps11: use dev_err_probe() where appropriate
  regulator: s2mps11: drop two needless variable initialisations
  regulator: add REGULATOR_LINEAR_VRANGE macro
  regulator: dt-bindings: add s2mpg11-pmic regulators
  regulator: dt-bindings: add s2mpg10-pmic regulators
  dt-bindings: firmware: google,gs101-acpm-ipc: convert regulators to lowercase
  mfd: sec: Add support for S2MPG11 PMIC via ACPM
  mfd: sec: s2mpg10: Reorder regulators for better probe performance
  dt-bindings: mfd: Add samsung,s2mpg11-pmic
  dt-bindings: mfd: samsung,s2mpg10-pmic: Link to its regulators
  dt-bindings: mfd: samsung,s2mps11: Split s2mpg10-pmic into separate file
  mfd: sec: Drop now unused struct sec_pmic_dev::irq_data
  ...
2026-02-11 09:40:12 -08:00
Linus Torvalds
0923fd0419 Locking updates for v6.20:
Lock debugging:
 
  - Implement compiler-driven static analysis locking context
    checking, using the upcoming Clang 22 compiler's context
    analysis features. (Marco Elver)
 
    We removed Sparse context analysis support, because prior to
    removal even a defconfig kernel produced 1,700+ context
    tracking Sparse warnings, the overwhelming majority of which
    are false positives. On an allmodconfig kernel the number of
    false positive context tracking Sparse warnings grows to
    over 5,200... On the plus side of the balance actual locking
    bugs found by Sparse context analysis is also rather ... sparse:
    I found only 3 such commits in the last 3 years. So the
    rate of false positives and the maintenance overhead is
    rather high and there appears to be no active policy in
    place to achieve a zero-warnings baseline to move the
    annotations & fixers to developers who introduce new code.
 
    Clang context analysis is more complete and more aggressive
    in trying to find bugs, at least in principle. Plus it has
    a different model to enabling it: it's enabled subsystem by
    subsystem, which results in zero warnings on all relevant
    kernel builds (as far as our testing managed to cover it).
    Which allowed us to enable it by default, similar to other
    compiler warnings, with the expectation that there are no
    warnings going forward. This enforces a zero-warnings baseline
    on clang-22+ builds. (Which are still limited in distribution,
    admittedly.)
 
    Hopefully the Clang approach can lead to a more maintainable
    zero-warnings status quo and policy, with more and more
    subsystems and drivers enabling the feature. Context tracking
    can be enabled for all kernel code via WARN_CONTEXT_ANALYSIS_ALL=y
    (default disabled), but this will generate a lot of false positives.
 
    ( Having said that, Sparse support could still be added back,
      if anyone is interested - the removal patch is still
      relatively straightforward to revert at this stage. )
 
 Rust integration updates: (Alice Ryhl, Fujita Tomonori, Boqun Feng)
 
   - Add support for Atomic<i8/i16/bool> and replace most Rust native
     AtomicBool usages with Atomic<bool>
 
   - Clean up LockClassKey and improve its documentation
 
   - Add missing Send and Sync trait implementation for SetOnce
 
   - Make ARef Unpin as it is supposed to be
 
   - Add __rust_helper to a few Rust helpers as a preparation for
     helper LTO
 
   - Inline various lock related functions to avoid additional
     function calls.
 
 WW mutexes:
 
   - Extend ww_mutex tests and other test-ww_mutex updates (John Stultz)
 
 Misc fixes and cleanups:
 
   - rcu: Mark lockdep_assert_rcu_helper() __always_inline
     (Arnd Bergmann)
 
   - locking/local_lock: Include more missing headers (Peter Zijlstra)
 
   - seqlock: fix scoped_seqlock_read kernel-doc (Randy Dunlap)
 
   - rust: sync: Replace `kernel::c_str!` with C-Strings
     (Tamir Duberstein)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2026-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:
 "Lock debugging:

   - Implement compiler-driven static analysis locking context checking,
     using the upcoming Clang 22 compiler's context analysis features
     (Marco Elver)

     We removed Sparse context analysis support, because prior to
     removal even a defconfig kernel produced 1,700+ context tracking
     Sparse warnings, the overwhelming majority of which are false
     positives. On an allmodconfig kernel the number of false positive
     context tracking Sparse warnings grows to over 5,200... On the plus
     side of the balance actual locking bugs found by Sparse context
     analysis is also rather ... sparse: I found only 3 such commits in
     the last 3 years. So the rate of false positives and the
     maintenance overhead is rather high and there appears to be no
     active policy in place to achieve a zero-warnings baseline to move
     the annotations & fixers to developers who introduce new code.

     Clang context analysis is more complete and more aggressive in
     trying to find bugs, at least in principle. Plus it has a different
     model to enabling it: it's enabled subsystem by subsystem, which
     results in zero warnings on all relevant kernel builds (as far as
     our testing managed to cover it). Which allowed us to enable it by
     default, similar to other compiler warnings, with the expectation
     that there are no warnings going forward. This enforces a
     zero-warnings baseline on clang-22+ builds (Which are still limited
     in distribution, admittedly)

     Hopefully the Clang approach can lead to a more maintainable
     zero-warnings status quo and policy, with more and more subsystems
     and drivers enabling the feature. Context tracking can be enabled
     for all kernel code via WARN_CONTEXT_ANALYSIS_ALL=y (default
     disabled), but this will generate a lot of false positives.

     ( Having said that, Sparse support could still be added back,
       if anyone is interested - the removal patch is still
       relatively straightforward to revert at this stage. )

  Rust integration updates: (Alice Ryhl, Fujita Tomonori, Boqun Feng)

    - Add support for Atomic<i8/i16/bool> and replace most Rust native
      AtomicBool usages with Atomic<bool>

    - Clean up LockClassKey and improve its documentation

    - Add missing Send and Sync trait implementation for SetOnce

    - Make ARef Unpin as it is supposed to be

    - Add __rust_helper to a few Rust helpers as a preparation for
      helper LTO

    - Inline various lock related functions to avoid additional function
      calls

  WW mutexes:

    - Extend ww_mutex tests and other test-ww_mutex updates (John
      Stultz)

  Misc fixes and cleanups:

    - rcu: Mark lockdep_assert_rcu_helper() __always_inline (Arnd
      Bergmann)

    - locking/local_lock: Include more missing headers (Peter Zijlstra)

    - seqlock: fix scoped_seqlock_read kernel-doc (Randy Dunlap)

    - rust: sync: Replace `kernel::c_str!` with C-Strings (Tamir
      Duberstein)"

* tag 'locking-core-2026-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (90 commits)
  locking/rwlock: Fix write_trylock_irqsave() with CONFIG_INLINE_WRITE_TRYLOCK
  rcu: Mark lockdep_assert_rcu_helper() __always_inline
  compiler-context-analysis: Remove __assume_ctx_lock from initializers
  tomoyo: Use scoped init guard
  crypto: Use scoped init guard
  kcov: Use scoped init guard
  compiler-context-analysis: Introduce scoped init guards
  cleanup: Make __DEFINE_LOCK_GUARD handle commas in initializers
  seqlock: fix scoped_seqlock_read kernel-doc
  tools: Update context analysis macros in compiler_types.h
  rust: sync: Replace `kernel::c_str!` with C-Strings
  rust: sync: Inline various lock related methods
  rust: helpers: Move #define __rust_helper out of atomic.c
  rust: wait: Add __rust_helper to helpers
  rust: time: Add __rust_helper to helpers
  rust: task: Add __rust_helper to helpers
  rust: sync: Add __rust_helper to helpers
  rust: refcount: Add __rust_helper to helpers
  rust: rcu: Add __rust_helper to helpers
  rust: processor: Add __rust_helper to helpers
  ...
2026-02-10 12:28:44 -08:00
Linus Torvalds
a9aabb3b83 Rust changes for v6.20 / v7.0
Toolchain and infrastructure:
 
  - Add '__rust_helper' annotation to the C helpers.
 
    This is needed to inline these helpers into Rust code.
 
  - Remove imports available via the prelude, treewide.
 
    This was possible thanks to a new lint in Klint that Gary has
    implemented -- more Klint-related changes, including initial upstream
    support, are coming.
 
  - Deduplicate pin-init flags.
 
 'kernel' crate:
 
  - Add support for calling a function exactly once with the new
    'do_once_lite!' macro (and 'OnceLite' type).
 
    Based on this, add 'pr_*_once!' macros to print only once.
 
  - Add 'impl_flags!' macro for defining common bitflags operations:
 
        impl_flags!(
            /// Represents multiple permissions.
            #[derive(Debug, Clone, Default, Copy, PartialEq, Eq)]
            pub struct Permissions(u32);
 
            /// Represents a single permission.
            #[derive(Debug, Clone, Copy, PartialEq, Eq)]
            pub enum Permission {
                /// Read permission.
                Read = 1 << 0,
 
                /// Write permission.
                Write = 1 << 1,
 
                /// Execute permission.
                Execute = 1 << 2,
            }
        );
 
        let mut f: Permissions = Permission::Read | Permission::Write;
        assert!(f.contains(Permission::Read));
        assert!(!f.contains(Permission::Execute));
 
        f |= Permission::Execute;
        assert!(f.contains(Permission::Execute));
 
        let f2: Permissions = Permission::Write | Permission::Execute;
        assert!((f ^ f2).contains(Permission::Read));
        assert!(!(f ^ f2).contains(Permission::Write));
 
  - 'bug' module: support 'CONFIG_DEBUG_BUGVERBOSE_DETAILED' in the
    'warn_on!' macro in order to show the evaluated condition alongside
    the file path:
 
         ------------[ cut here ]------------
         WARNING: [val == 1] linux/samples/rust/rust_minimal.rs:27 at ...
         Modules linked in: rust_minimal(+)
 
  - Add safety module with 'unsafe_precondition_assert!' macro, currently
    a wrapper for 'debug_assert!', intended to mark the validation of
    safety preconditions where possible:
 
        /// # Safety
        ///
        /// The caller must ensure that `index` is less than `N`.
        unsafe fn set_unchecked(&mut self, index: usize, value: T) {
            unsafe_precondition_assert!(
                index < N,
                "set_unchecked() requires index ({index}) < N ({N})"
            );
 
            ...
        }
 
  - Add instructions to 'build_assert!' documentation requesting to
    always inline functions when used with function arguments.
 
  - 'ptr' module: replace 'build_assert!' with a 'const' one.
 
  - 'rbtree' module: reduce unsafe blocks on pointer derefs.
 
  - 'transmute' module: implement 'FromBytes' and 'AsBytes' for
    inhabited ZSTs, and use it in Nova.
 
  - More treewide replacements of 'c_str!' with C string literals.
 
 'macros' crate:
 
  - Rewrite most procedural macros ('module!', 'concat_idents!',
    '#[export]', '#[vtable]', '#[kunit_tests]') to use the 'syn' parsing
    library which we introduced last cycle, with better diagnostics.
 
    This also allows to support '#[cfg]' properly in the '#[vtable]'
    macro, to support arbitrary types in 'module!' macro (not just an
    identifier) and to remove several custom parsing helpers we had.
 
  - Use 'quote!' from the recently vendored 'quote' library and remove
    our custom one.
 
    The vendored one also allows us to avoid quoting '"' and '{}' inside
    the template anymore and editors can now highlight it. In addition,
    it improves robustness as it eliminates the need for string quoting
    and escaping.
 
  - Use 'pin_init::zeroed()' to simplify KUnit code.
 
 'pin-init' crate:
 
  - Rewrite all procedural macros ('[pin_]init!', '#[pin_data]',
    '#[pinned_drop]', 'derive([Maybe]Zeroable)') to use the 'syn' parsing
    library which we introduced last cycle, with better diagnostics.
 
  - Implement 'InPlaceWrite' for '&'static mut MaybeUninit<T>'. This
    enables users to use external allocation mechanisms such as
    'static_cell'.
 
  - Support tuple structs in 'derive([Maybe]Zeroable)'.
 
  - Support attributes on fields in '[pin_]init!' (such as
    '#[cfg(...)]').
 
  - Add a '#[default_error(<type>)]' attribute to '[pin_]init!' to
    override the default error (when no '? Error' is specified).
 
  - Support packed structs in '[pin_]init!' with
    '#[disable_initialized_field_access]'.
 
  - Remove 'try_[pin_]init!' in favor of merging their feature
    with '[pin_]init!'. Update the kernel's own 'try_[pin_]init!'
    macros to use the 'default_error' attribute.
 
  - Correct 'T: Sized' bounds to 'T: ?Sized' in the generated
    'PinnedDrop' check by '#[pin_data]'.
 
 Documentation:
 
  - Conclude the Rust experiment.
 
 MAINTAINERS:
 
  - Add "RUST [RUST-ANALYZER]" entry for the rust-analyzer support. Tamir
    and Jesung will take care of it. They have both been active around it
    for a while. The new tree will flow through the Rust one.
 
  - Add Gary as maintainer for "RUST [PIN-INIT]".
 
  - Update Boqun and Tamir emails to their kernel.org accounts.
 
 And a few other cleanups and improvements.
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Merge tag 'rust-6.20-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

Pull rust updates from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Add '__rust_helper' annotation to the C helpers

     This is needed to inline these helpers into Rust code

   - Remove imports available via the prelude, treewide

     This was possible thanks to a new lint in Klint that Gary has
     implemented -- more Klint-related changes, including initial
     upstream support, are coming

   - Deduplicate pin-init flags

  'kernel' crate:

   - Add support for calling a function exactly once with the new
     'do_once_lite!' macro (and 'OnceLite' type)

     Based on this, add 'pr_*_once!' macros to print only once

   - Add 'impl_flags!' macro for defining common bitflags operations:

         impl_flags!(
             /// Represents multiple permissions.
             #[derive(Debug, Clone, Default, Copy, PartialEq, Eq)]
             pub struct Permissions(u32);

             /// Represents a single permission.
             #[derive(Debug, Clone, Copy, PartialEq, Eq)]
             pub enum Permission {
                 /// Read permission.
                 Read = 1 << 0,

                 /// Write permission.
                 Write = 1 << 1,

                 /// Execute permission.
                 Execute = 1 << 2,
             }
         );

         let mut f: Permissions = Permission::Read | Permission::Write;
         assert!(f.contains(Permission::Read));
         assert!(!f.contains(Permission::Execute));

         f |= Permission::Execute;
         assert!(f.contains(Permission::Execute));

         let f2: Permissions = Permission::Write | Permission::Execute;
         assert!((f ^ f2).contains(Permission::Read));
         assert!(!(f ^ f2).contains(Permission::Write));

   - 'bug' module: support 'CONFIG_DEBUG_BUGVERBOSE_DETAILED' in the
     'warn_on!' macro in order to show the evaluated condition alongside
     the file path:

          ------------[ cut here ]------------
          WARNING: [val == 1] linux/samples/rust/rust_minimal.rs:27 at ...
          Modules linked in: rust_minimal(+)

   - Add safety module with 'unsafe_precondition_assert!' macro,
     currently a wrapper for 'debug_assert!', intended to mark the
     validation of safety preconditions where possible:

         /// # Safety
         ///
         /// The caller must ensure that `index` is less than `N`.
         unsafe fn set_unchecked(&mut self, index: usize, value: T) {
             unsafe_precondition_assert!(
                 index < N,
                 "set_unchecked() requires index ({index}) < N ({N})"
             );

             ...
         }

   - Add instructions to 'build_assert!' documentation requesting to
     always inline functions when used with function arguments

   - 'ptr' module: replace 'build_assert!' with a 'const' one

   - 'rbtree' module: reduce unsafe blocks on pointer derefs

   - 'transmute' module: implement 'FromBytes' and 'AsBytes' for
     inhabited ZSTs, and use it in Nova

   - More treewide replacements of 'c_str!' with C string literals

  'macros' crate:

   - Rewrite most procedural macros ('module!', 'concat_idents!',
     '#[export]', '#[vtable]', '#[kunit_tests]') to use the 'syn'
     parsing library which we introduced last cycle, with better
     diagnostics

     This also allows to support '#[cfg]' properly in the '#[vtable]'
     macro, to support arbitrary types in 'module!' macro (not just an
     identifier) and to remove several custom parsing helpers we had

   - Use 'quote!' from the recently vendored 'quote' library and remove
     our custom one

     The vendored one also allows us to avoid quoting '"' and '{}'
     inside the template anymore and editors can now highlight it. In
     addition, it improves robustness as it eliminates the need for
     string quoting and escaping

   - Use 'pin_init::zeroed()' to simplify KUnit code

  'pin-init' crate:

   - Rewrite all procedural macros ('[pin_]init!', '#[pin_data]',
     '#[pinned_drop]', 'derive([Maybe]Zeroable)') to use the 'syn'
     parsing library which we introduced last cycle, with better
     diagnostics

   - Implement 'InPlaceWrite' for '&'static mut MaybeUninit<T>'. This
     enables users to use external allocation mechanisms such as
     'static_cell'

   - Support tuple structs in 'derive([Maybe]Zeroable)'

   - Support attributes on fields in '[pin_]init!' (such as
     '#[cfg(...)]')

   - Add a '#[default_error(<type>)]' attribute to '[pin_]init!' to
     override the default error (when no '? Error' is specified)

   - Support packed structs in '[pin_]init!' with
     '#[disable_initialized_field_access]'

   - Remove 'try_[pin_]init!' in favor of merging their feature with
     '[pin_]init!'. Update the kernel's own 'try_[pin_]init!' macros to
     use the 'default_error' attribute

   - Correct 'T: Sized' bounds to 'T: ?Sized' in the generated
     'PinnedDrop' check by '#[pin_data]'

  Documentation:

   - Conclude the Rust experiment

  MAINTAINERS:

   - Add "RUST [RUST-ANALYZER]" entry for the rust-analyzer support.
     Tamir and Jesung will take care of it. They have both been active
     around it for a while. The new tree will flow through the Rust one

   - Add Gary as maintainer for "RUST [PIN-INIT]"

   - Update Boqun and Tamir emails to their kernel.org accounts

  And a few other cleanups and improvements"

* tag 'rust-6.20-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (59 commits)
  rust: safety: introduce `unsafe_precondition_assert!` macro
  rust: add `impl_flags!` macro for defining common bitflag operations
  rust: print: Add pr_*_once macros
  rust: bug: Support DEBUG_BUGVERBOSE_DETAILED option
  rust: print: Add support for calling a function exactly once
  rust: kbuild: deduplicate pin-init flags
  gpu: nova-core: remove imports available via prelude
  rust: clk: replace `kernel::c_str!` with C-Strings
  MAINTAINERS: Update my email address to @kernel.org
  rust: macros: support `#[cfg]` properly in `#[vtable]` macro.
  rust: kunit: use `pin_init::zeroed` instead of custom null value
  rust: macros: rearrange `#[doc(hidden)]` in `module!` macro
  rust: macros: allow arbitrary types to be used in `module!` macro
  rust: macros: convert `#[kunit_tests]` macro to use `syn`
  rust: macros: convert `concat_idents!` to use `syn`
  rust: macros: convert `#[export]` to use `syn`
  rust: macros: use `quote!` for `module!` macro
  rust: macros: use `syn` to parse `module!` macro
  rust: macros: convert `#[vtable]` macro to use `syn`
  rust: macros: use `quote!` from vendored crate
  ...
2026-02-10 11:53:01 -08:00
Linus Torvalds
f144367d01 bitmap updates for v6.20
- more rust helpers (Alice);
  - more bitops tests (Ryota);
  - FIND_NTH_BIT() uninitialized variable fix (Lee Yongjun);
  - random cleanups (Andy, H. Peter).
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Merge tag 'bitmap-for-6.20' of https://github.com/norov/linux

Pull bitmap updates from Yury Norov:

 - more rust helpers (Alice)

 - more bitops tests (Ryota)

 - FIND_NTH_BIT() uninitialized variable fix (Lee Yongjun)

 - random cleanups (Andy, H. Peter)

* tag 'bitmap-for-6.20' of https://github.com/norov/linux:
  lib/tests: extend KUnit test for bitops with more cases
  bitops: Add more files to the MAINTAINERS
  lib/find_bit: fix uninitialized variable use in FIND_NTH_BIT
  lib/tests: add KUnit test for bitops
  rust: cpumask: add __rust_helper to helpers
  rust: bitops: add __rust_helper to helpers
  rust: bitmap: add __rust_helper to helpers
  linux/bitfield.h: replace __auto_type with auto
2026-02-10 11:39:45 -08:00
Linus Torvalds
9b1b3dcd28 Power management updates for 6.20-rc1/7.0-rc1
- Remove the unused omap-cpufreq driver (Andreas Kemnade)
 
  - Optimize error handling code in cpufreq_boost_trigger_state() and
    make cpufreq_boost_trigger_state() return -EOPNOTSUPP if no policy
    supports boost (Lifeng Zheng)
 
  - Update cpufreq-dt-platdev list for tegra, qcom, TI (Aaron Kling,
    Dhruva Gole, and Konrad Dybcio)
 
  - Minor improvements to the cpufreq and cpumask rust implementation
    (Alexandre Courbot, Alice Ryhl, Tamir Duberstein, and Yilin Chen)
 
  - Add support for AM62L3 SoC to the ti-cpufreq driver (Dhruva Gole)
 
  - Update arch_freq_scale in the CPPC cpufreq driver's frequency
    invariance engine (FIE) in scheduler ticks if the related CPPC
    registers are not in PCC (Jie Zhan)
 
  - Assorted minor cleanups and improvements in ARM cpufreq drivers (Juan
    Martinez, Felix Gu, Luca Weiss, and Sergey Shtylyov)
 
  - Add generic helpers for sysfs show/store to cppc_cpufreq (Sumit
    Gupta)
 
  - Make the scaling_setspeed cpufreq sysfs attribute return the actual
    requested frequency to avoid confusion (Pengjie Zhang)
 
  - Simplify the idle CPU time granularity test in the ondemand cpufreq
    governor (Frederic Weisbecker)
 
  - Enable asym capacity in intel_pstate only when CPU SMT is not
    possible (Yaxiong Tian)
 
  - Update the description of rate_limit_us default value in cpufreq
    documentation (Yaxiong Tian)
 
  - Add a command line option to adjust the C-states table in the
    intel_idle driver, remove the 'preferred_cstates' module parameter
    from it, add C-states validation to it and clean it up (Artem
    Bityutskiy)
 
  - Make the menu cpuidle governor always check the time till the closest
    timer event when the scheduler tick has been stopped to prevent it
    from mistakenly selecting the deepest available idle state (Rafael
    Wysocki)
 
  - Update the teo cpuidle governor to avoid making suboptimal decisions
    in certain corner cases and generally improve idle state selection
    accuracy (Rafael Wysocki)
 
  - Remove an unlikely() annotation on the early-return condition in
    menu_select() that leads to branch misprediction 100% of the time
    on systems with only 1 idle state enabled, like ARM64 servers (Breno
    Leitao)
 
  - Add Christian Loehle to MAINTAINERS as a cpuidle reviewer (Christian
    Loehle)
 
  - Stop flagging the PM runtime workqueue as freezable to avoid system
    suspend and resume deadlocks in subsystems that assume asynchronous
    runtime PM to work during system-wide PM transitions (Rafael Wysocki)
 
  - Drop redundant NULL pointer checks before acomp_request_free() from
    the hibernation code handling image saving (Rafael Wysocki)
 
  - Update wakeup_sources_walk_start() to handle empty lists of wakeup
    sources as appropriate (Samuel Wu)
 
  - Make dev_pm_clear_wake_irq() check the power.wakeirq value under
    power.lock to avoid race conditions (Gui-Dong Han)
 
  - Avoid bit field races related to power.work_in_progress in the core
    device suspend code (Xuewen Yan)
 
  - Make several drivers discard pm_runtime_put() return value in
    preparation for converting that function to a void one (Rafael
    Wysocki)
 
  - Add PL4 support for Ice Lake to the Intel RAPL power capping
    driver (Daniel Tang)
 
  - Replace sprintf() with sysfs_emit() in power capping sysfs show
    functions (Sumeet Pawnikar)
 
  - Make dev_pm_opp_get_level() return value match the documentation
    after a previous update of the latter (Aleks Todorov)
 
  - Use scoped for each OF child loop in the OPP code (Krzysztof
    Kozlowski)
 
  - Fix a bug in an example code snippet and correct typos in the energy
    model management documentation (Patrick Little)
 
  - Fix miscellaneous problems in cpupower (Kaushlendra Kumar):
 
    * idle_monitor: Fix incorrect value logged after stop
    * Fix inverted APERF capability check
    * Use strcspn() to strip trailing newline
    * Reset errno before strtoull()
    * Show C0 in idle-info dump
 
  - Improve cpupower installation procedure by making the systemd step
    optional and allowing users to disable the installation of systemd's
    unit file (João Marcos Costa)
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Merge tag 'pm-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "By the number of commits, cpufreq is the leading party (again) and the
  most visible change there is the removal of the omap-cpufreq driver
  that has not been used for a long time (good riddance). There are also
  quite a few changes in the cppc_cpufreq driver, mostly related to
  fixing its frequency invariance engine in the case when the CPPC
  registers used by it are not in PCC. In addition to that, support for
  AM62L3 is added to the ti-cpufreq driver and the cpufreq-dt-platdev
  list is updated for some platforms. The remaining cpufreq changes are
  assorted fixes and cleanups.

  Next up is cpuidle and the changes there are dominated by intel_idle
  driver updates, mostly related to the new command line facility
  allowing users to adjust the list of C-states used by the driver.
  There are also a few updates of cpuidle governors, including two menu
  governor fixes and some refinements of the teo governor, and a
  MAINTAINERS update adding Christian Loehle as a cpuidle reviewer.
  [Thanks for stepping up Christian!]

  The most significant update related to system suspend and hibernation
  is the one to stop freezing the PM runtime workqueue during system PM
  transitions which allows some deadlocks to be avoided. There is also a
  fix for possible concurrent bit field updates in the core device
  suspend code and a few other minor fixes.

  Apart from the above, several drivers are updated to discard the
  return value of pm_runtime_put() which is going to be converted to a
  void function as soon as everybody stops using its return value, PL4
  support for Ice Lake is added to the Intel RAPL power capping driver,
  and there are assorted cleanups, documentation fixes, and some
  cpupower utility improvements.

  Specifics:

   - Remove the unused omap-cpufreq driver (Andreas Kemnade)

   - Optimize error handling code in cpufreq_boost_trigger_state() and
     make cpufreq_boost_trigger_state() return -EOPNOTSUPP if no policy
     supports boost (Lifeng Zheng)

   - Update cpufreq-dt-platdev list for tegra, qcom, TI (Aaron Kling,
     Dhruva Gole, and Konrad Dybcio)

   - Minor improvements to the cpufreq and cpumask rust implementation
     (Alexandre Courbot, Alice Ryhl, Tamir Duberstein, and Yilin Chen)

   - Add support for AM62L3 SoC to the ti-cpufreq driver (Dhruva Gole)

   - Update arch_freq_scale in the CPPC cpufreq driver's frequency
     invariance engine (FIE) in scheduler ticks if the related CPPC
     registers are not in PCC (Jie Zhan)

   - Assorted minor cleanups and improvements in ARM cpufreq drivers
     (Juan Martinez, Felix Gu, Luca Weiss, and Sergey Shtylyov)

   - Add generic helpers for sysfs show/store to cppc_cpufreq (Sumit
     Gupta)

   - Make the scaling_setspeed cpufreq sysfs attribute return the actual
     requested frequency to avoid confusion (Pengjie Zhang)

   - Simplify the idle CPU time granularity test in the ondemand cpufreq
     governor (Frederic Weisbecker)

   - Enable asym capacity in intel_pstate only when CPU SMT is not
     possible (Yaxiong Tian)

   - Update the description of rate_limit_us default value in cpufreq
     documentation (Yaxiong Tian)

   - Add a command line option to adjust the C-states table in the
     intel_idle driver, remove the 'preferred_cstates' module parameter
     from it, add C-states validation to it and clean it up (Artem
     Bityutskiy)

   - Make the menu cpuidle governor always check the time till the
     closest timer event when the scheduler tick has been stopped to
     prevent it from mistakenly selecting the deepest available idle
     state (Rafael Wysocki)

   - Update the teo cpuidle governor to avoid making suboptimal
     decisions in certain corner cases and generally improve idle state
     selection accuracy (Rafael Wysocki)

   - Remove an unlikely() annotation on the early-return condition in
     menu_select() that leads to branch misprediction 100% of the time
     on systems with only 1 idle state enabled, like ARM64 servers
     (Breno Leitao)

   - Add Christian Loehle to MAINTAINERS as a cpuidle reviewer
     (Christian Loehle)

   - Stop flagging the PM runtime workqueue as freezable to avoid system
     suspend and resume deadlocks in subsystems that assume asynchronous
     runtime PM to work during system-wide PM transitions (Rafael
     Wysocki)

   - Drop redundant NULL pointer checks before acomp_request_free() from
     the hibernation code handling image saving (Rafael Wysocki)

   - Update wakeup_sources_walk_start() to handle empty lists of wakeup
     sources as appropriate (Samuel Wu)

   - Make dev_pm_clear_wake_irq() check the power.wakeirq value under
     power.lock to avoid race conditions (Gui-Dong Han)

   - Avoid bit field races related to power.work_in_progress in the core
     device suspend code (Xuewen Yan)

   - Make several drivers discard pm_runtime_put() return value in
     preparation for converting that function to a void one (Rafael
     Wysocki)

   - Add PL4 support for Ice Lake to the Intel RAPL power capping driver
     (Daniel Tang)

   - Replace sprintf() with sysfs_emit() in power capping sysfs show
     functions (Sumeet Pawnikar)

   - Make dev_pm_opp_get_level() return value match the documentation
     after a previous update of the latter (Aleks Todorov)

   - Use scoped for each OF child loop in the OPP code (Krzysztof
     Kozlowski)

   - Fix a bug in an example code snippet and correct typos in the
     energy model management documentation (Patrick Little)

   - Fix miscellaneous problems in cpupower (Kaushlendra Kumar):
      * idle_monitor: Fix incorrect value logged after stop
      * Fix inverted APERF capability check
      * Use strcspn() to strip trailing newline
      * Reset errno before strtoull()
      * Show C0 in idle-info dump

   - Improve cpupower installation procedure by making the systemd step
     optional and allowing users to disable the installation of
     systemd's unit file (João Marcos Costa)"

* tag 'pm-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (65 commits)
  PM: sleep: core: Avoid bit field races related to work_in_progress
  PM: sleep: wakeirq: harden dev_pm_clear_wake_irq() against races
  cpufreq: Documentation: Update description of rate_limit_us default value
  cpufreq: intel_pstate: Enable asym capacity only when CPU SMT is not possible
  PM: wakeup: Handle empty list in wakeup_sources_walk_start()
  PM: EM: Documentation: Fix bug in example code snippet
  Documentation: Fix typos in energy model documentation
  cpuidle: governors: teo: Refine intercepts-based idle state lookup
  cpuidle: governors: teo: Adjust the classification of wakeup events
  cpufreq: ondemand: Simplify idle cputime granularity test
  cpufreq: userspace: make scaling_setspeed return the actual requested frequency
  PM: hibernate: Drop NULL pointer checks before acomp_request_free()
  cpufreq: CPPC: Add generic helpers for sysfs show/store
  cpufreq: scmi: Fix device_node reference leak in scmi_cpu_domain_id()
  cpufreq: ti-cpufreq: add support for AM62L3 SoC
  cpufreq: dt-platdev: Add ti,am62l3 to blocklist
  cpufreq/amd-pstate: Add comment explaining nominal_perf usage for performance policy
  cpufreq: scmi: correct SCMI explanation
  cpufreq: dt-platdev: Block the driver from probing on more QC platforms
  rust: cpumask: rename methods of Cpumask for clarity and consistency
  ...
2026-02-09 19:00:42 -08:00
Linus Torvalds
4b6c6bc6fa vfs-7.0-rc1.rust
Please consider pulling these changes from the signed vfs-7.0-rc1.rust tag.
 
 Thanks!
 Christian
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Merge tag 'vfs-7.0-rc1.rust' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs rust updates from Christian Brauner:
 "Allow inlining C helpers into Rust when using LTO: Add the
  __rust_helper annotation to all VFS-related Rust helper functions.

  Currently, C helpers cannot be inlined into Rust code even under LTO
  because LLVM detects slightly different codegen options between the C
  and Rust compilation units (differing null-pointer-check flags,
  builtin lists, and target feature strings). The __rust_helper macro is
  the first step toward fixing this: it is currently #defined to
  nothing, but a follow-up series will change it to __always_inline when
  compiling with LTO (while keeping it empty for bindgen, which ignores
  inline functions).

  This picks up the VFS portion (fs, pid_namespace, poll) of a larger
  tree-wide series"

* tag 'vfs-7.0-rc1.rust' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  rust: poll: add __rust_helper to helpers
  rust: pid_namespace: add __rust_helper to helpers
  rust: fs: add __rust_helper to helpers
2026-02-09 10:41:56 -08:00
Linus Torvalds
bcc8fd3e15 lsm/stable-7.0 PR 20260203
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Merge tag 'lsm-pr-20260203' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

Pull lsm updates from Paul Moore:

 - Unify the security_inode_listsecurity() calls in NFSv4

   While looking at security_inode_listsecurity() with an eye towards
   improving the interface, we realized that the NFSv4 code was making
   multiple calls to the LSM hook that could be consolidated into one.

 - Mark the LSM static branch keys as static - this helps resolve some
   sparse warnings

 - Add __rust_helper annotations to the LSM and cred wrapper functions

 - Remove the unsused set_security_override_from_ctx() function

 - Minor fixes to some of the LSM kdoc comment blocks

* tag 'lsm-pr-20260203' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
  lsm: make keys for static branch static
  cred: remove unused set_security_override_from_ctx()
  rust: security: add __rust_helper to helpers
  rust: cred: add __rust_helper to helpers
  nfs: unify security_inode_listsecurity() calls
  lsm: fix kernel-doc struct member names
2026-02-09 10:16:48 -08:00
Linus Torvalds
7d726a34d6 linux_kselftest-kunit-6.20-rc1
kunit:
 - adds __rust_helper to helpers
 - fixes up const mis-match in many assert functions
 - fixes up const mismatch in test_list_sort
 - protects KUNIT_BINARY_STR_ASSERTION against ERR_PTR values
 - respects KBUILD_OUTPUT env variable by default
 - adds bash completion
 
 kunit tool:
 - adds test for nested test result reporting
 - fixes to not overwrite test status based on subtest counts
 - adds 32-bit big endian ARM configuration to qemu_configs
 - renames test_data_path() to _test_data_path()
 - fixes relying on implicit working directory change
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Merge tag 'linux_kselftest-kunit-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kunit updates from Shuah Khan:
 "kunit:
   - add __rust_helper to helpers
   - fix up const mismatch in many assert functions
   - fix up const mismatch in test_list_sort
   - protect KUNIT_BINARY_STR_ASSERTION against ERR_PTR values
   - respect KBUILD_OUTPUT env variable by default
   - add bash completion

  kunit tool:
   - add test for nested test result reporting
   - do not overwrite test status based on subtest counts
   - add 32-bit big endian ARM configuration to qemu_configs
   - rename test_data_path() to _test_data_path()
   - do not rely on implicit working directory change"

* tag 'linux_kselftest-kunit-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: add bash completion
  kunit: tool: test: Don't rely on implicit working directory change
  kunit: tool: test: Rename test_data_path() to _test_data_path()
  kunit: qemu_configs: Add 32-bit big endian ARM configuration
  kunit: tool: Don't overwrite test status based on subtest counts
  kunit: tool: Add test for nested test result reporting
  kunit: respect KBUILD_OUTPUT env variable by default
  kunit: Protect KUNIT_BINARY_STR_ASSERTION against ERR_PTR values
  test_list_sort: fix up const mismatch
  kunit: fix up const mis-match in many assert functions
  rust: kunit: add __rust_helper to helpers
2026-02-09 09:37:55 -08:00
Dirk Behme
66fb10bc5c rust: dma: add missing __rust_helper annotations
The commit d8932355f8 ("rust: dma: add helpers for architectures
without CONFIG_HAS_DMA") missed adding the __rust_helper annotations.
Add them.

Reported-by: Gary Guo <gary@garyguo.net>
Closes: https://lore.kernel.org/rust-for-linux/DFW4F5OSDO7A.TBUOX6RCN8G7@garyguo.net/
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260126071738.1670967-1-dirk.behme@de.bosch.com
[ Fix minor checkpatch.pl warning. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-02-06 20:19:09 +01:00
Beata Michalska
c71257394b rust: dma: allow drivers to tune max segment size
Make dma_set_max_seg_size() available to Rust so drivers can perform
standard DMA setup steps.

Signed-off-by: Beata Michalska <beata.michalska@arm.com>
Acked-by: Robin Murphy <robvin.murphy@arm.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260128135320.689046-1-beata.michalska@arm.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-01-28 16:53:24 +01:00
Dave Airlie
15392f7640 DRM Rust changes for v7.0-rc1
DRM:
   - Fix documentation for Registration constructors.
   - Use pin_init::zeroed() for fops initialization.
   - Annotate DRM helpers with __rust_helper.
   - Improve safety documentation for gem::Object::new().
   - Update AlwaysRefCounted imports.
 
 MM:
   - Prevent integer overflow in page_align().
 
 Nova (Core):
   - Prepare for Turing support. This includes parsing and handling
     Turing-specific firmware headers and sections as well as a Turing
     Falcon HAL implementation.
   - Get rid of the Result<impl PinInit<T, E>> anti-pattern.
   - Relocate initializer-specific code into the appropriate initializer.
   - Use CStr::from_bytes_until_nul() to remove custom helpers.
   - Improve handling of unexpected firmware values.
   - Clean up redundant debug prints.
   - Replace c_str!() with native Rust C-string literals.
   - Update nova-core task list.
 
 Nova (DRM):
   - Align GEM object size to system page size.
 
 Tyr:
   - Use generated uAPI bindings for GpuInfo.
   - Replace manual sleeps with read_poll_timeout().
   - Replace c_str!() with native Rust C-string literals.
   - Suppress warnings for unread fields.
   - Fix incorrect register name in print statement.
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Merge tag 'drm-rust-next-2026-01-26' of https://gitlab.freedesktop.org/drm/rust/kernel into drm-next

DRM Rust changes for v7.0-rc1

DRM:
  - Fix documentation for Registration constructors.
  - Use pin_init::zeroed() for fops initialization.
  - Annotate DRM helpers with __rust_helper.
  - Improve safety documentation for gem::Object::new().
  - Update AlwaysRefCounted imports.

MM:
  - Prevent integer overflow in page_align().

Nova (Core):
  - Prepare for Turing support. This includes parsing and handling
    Turing-specific firmware headers and sections as well as a Turing
    Falcon HAL implementation.
  - Get rid of the Result<impl PinInit<T, E>> anti-pattern.
  - Relocate initializer-specific code into the appropriate initializer.
  - Use CStr::from_bytes_until_nul() to remove custom helpers.
  - Improve handling of unexpected firmware values.
  - Clean up redundant debug prints.
  - Replace c_str!() with native Rust C-string literals.
  - Update nova-core task list.

Nova (DRM):
  - Align GEM object size to system page size.

Tyr:
  - Use generated uAPI bindings for GpuInfo.
  - Replace manual sleeps with read_poll_timeout().
  - Replace c_str!() with native Rust C-string literals.
  - Suppress warnings for unread fields.
  - Fix incorrect register name in print statement.
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: "Danilo Krummrich" <dakr@kernel.org>
Link: https://patch.msgid.link/DFYW1WV6DUCG.3K8V2DAVD1Q4A@kernel.org
2026-01-28 13:35:23 +10:00
Rafael J. Wysocki
b753c3204d CPUFreq arm updates for 7.0
- Update cpufreq-dt-platdev list for tegra, qcom, TI (Aaron Kling,
   Dhruva Gole, and Konrad Dybcio).
 
 - Minor improvements to the cpufreq / cpumask rust implementation
   (Alexandre Courbot, Alice Ryhl, Tamir Duberstein, and Yilin Chen).
 
 - Add support for AM62L3 SoC to ti-cpufreq driver (Dhruva Gole).
 
 - Update FIE arch_freq_scale in ticks for non-PCC regs (Jie Zhan).
 
 - Other minor cleanups / improvements (Felix Gu, Juan Martinez, Luca
   Weiss, and Sergey Shtylyov).
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Merge tag 'cpufreq-arm-updates-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm

Pull CPUFreq Arm updates for 7.0 from Viresh Kumar:

"- Update cpufreq-dt-platdev list for tegra, qcom, TI (Aaron Kling,
   Dhruva Gole, and Konrad Dybcio).

 - Minor improvements to the cpufreq / cpumask rust implementation
   (Alexandre Courbot, Alice Ryhl, Tamir Duberstein, and Yilin Chen).

 - Add support for AM62L3 SoC to ti-cpufreq driver (Dhruva Gole).

 - Update FIE arch_freq_scale in ticks for non-PCC regs (Jie Zhan).

 - Other minor cleanups / improvements (Felix Gu, Juan Martinez, Luca
   Weiss, and Sergey Shtylyov)."

* tag 'cpufreq-arm-updates-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  cpufreq: scmi: Fix device_node reference leak in scmi_cpu_domain_id()
  cpufreq: ti-cpufreq: add support for AM62L3 SoC
  cpufreq: dt-platdev: Add ti,am62l3 to blocklist
  cpufreq/amd-pstate: Add comment explaining nominal_perf usage for performance policy
  cpufreq: scmi: correct SCMI explanation
  cpufreq: dt-platdev: Block the driver from probing on more QC platforms
  rust: cpumask: rename methods of Cpumask for clarity and consistency
  cpufreq: CPPC: Update FIE arch_freq_scale in ticks for non-PCC regs
  cpufreq: CPPC: Factor out cppc_fie_kworker_init()
  ACPI: CPPC: Factor out and export per-cpu cppc_perf_ctrs_in_pcc_cpu()
  rust: cpufreq: replace `kernel::c_str!` with C-Strings
  cpufreq: Add Tegra186 and Tegra194 to cpufreq-dt-platdev blocklist
  dt-bindings: cpufreq: qcom-hw: document Milos CPUFREQ Hardware
  rust: cpufreq: add __rust_helper to helpers
  rust: cpufreq: always inline functions using build_assert with arguments
2026-01-27 14:46:28 +01:00
Miguel Ojeda
74a862d251 Rust XArray abstraction changes for v6.20/v7.0
- Add `__rust_helper` to xarray abstraction C helpers.
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Merge tag 'rust-xarray-for-v6.20-v7.0' of https://github.com/Rust-for-Linux/linux into rust-next

Pull XArray update from Andreas Hindborg:

 - Add '__rust_helper' to XArray abstraction C helpers.

* tag 'rust-xarray-for-v6.20-v7.0' of https://github.com/Rust-for-Linux/linux:
  rust: xarray: add __rust_helper to helpers
2026-01-27 12:30:33 +01:00
Alice Ryhl
9d84fd86d9 rust: cpufreq: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2026-01-27 11:21:22 +05:30
Danilo Krummrich
eb3dad518e Linux 6.19-rc7
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Merge tag 'v6.19-rc7' into driver-core-next

We need the driver-core fixes in here as well to build on top of.

Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-01-26 13:23:52 +01:00
Greg Kroah-Hartman
dbd91d4f55 Merge 6.19-rc7 into char-misc-next
We need the char/misc/iio fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-01-26 12:04:04 +01:00
Alice Ryhl
e741e19d76 rust: workqueue: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-26-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-26 03:51:31 +01:00
Alice Ryhl
93ad1d734e rust: uaccess: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-23-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-26 03:51:16 +01:00
Alice Ryhl
4890cd1d33 rust: slab: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-19-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-26 03:50:50 +01:00
Alice Ryhl
ac585bf970 rust: rbtree: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-15-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-26 03:50:41 +01:00
Alice Ryhl
fffdb58732 rust: of: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-12-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-26 03:50:21 +01:00
Alice Ryhl
5092aeaf70 rust: mm: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-11-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-26 03:49:56 +01:00
Alice Ryhl
fa6cbf1f5a rust: maple_tree: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Acked-by: Andrew Ballance <andrewjballance@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-10-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-26 03:49:09 +01:00
Alice Ryhl
227d1955bf rust: err: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-8-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-26 03:49:04 +01:00
Alice Ryhl
7caeac0b38 rust: bug: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-3-51da5f454a67@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-26 03:48:25 +01:00
Alice Ryhl
0332d0408d rust: pwm: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Michal Wilczynski <m.wilczynski@samsung.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-14-51da5f454a67@google.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2026-01-20 18:52:43 +01:00
Greg Kroah-Hartman
5ac87cd859 Merge 6.19-rc6 usb-next
We need the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-01-19 10:24:11 +01:00
Danilo Krummrich
086714bbb9 Linux 6.19-rc5
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Merge tag 'v6.19-rc5' into drm-rust-next

We need the drm-rust fixes from -rc5 in here for nova-core to build on
top of.

Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-01-16 20:03:17 +01:00
Alice Ryhl
c455f19bbe rust: xarray: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Tamir Duberstein <tamird@gmail.com>
Link: https://lore.kernel.org/r/20260105-define-rust-helper-v2-27-51da5f454a67@google.com
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
2026-01-15 10:01:23 +01:00
Alice Ryhl
6a069876eb rust: bitops: fix missing _find_* functions on 32-bit ARM
On 32-bit ARM, you may encounter linker errors such as this one:

	ld.lld: error: undefined symbol: _find_next_zero_bit
	>>> referenced by rust_binder_main.43196037ba7bcee1-cgu.0
	>>>               drivers/android/binder/rust_binder_main.o:(<rust_binder_main::process::Process>::insert_or_update_handle) in archive vmlinux.a
	>>> referenced by rust_binder_main.43196037ba7bcee1-cgu.0
	>>>               drivers/android/binder/rust_binder_main.o:(<rust_binder_main::process::Process>::insert_or_update_handle) in archive vmlinux.a

This error occurs because even though the functions are declared by
include/linux/find.h, the definition is #ifdef'd out on 32-bit ARM. This
is because arch/arm/include/asm/bitops.h contains:

	#define find_first_zero_bit(p,sz)	_find_first_zero_bit_le(p,sz)
	#define find_next_zero_bit(p,sz,off)	_find_next_zero_bit_le(p,sz,off)
	#define find_first_bit(p,sz)		_find_first_bit_le(p,sz)
	#define find_next_bit(p,sz,off)		_find_next_bit_le(p,sz,off)

And the underscore-prefixed function is conditional on #ifndef of the
non-underscore-prefixed name, but the declaration in find.h is *not*
conditional on that #ifndef.

To fix the linker error, we ensure that the symbols in question exist
when compiling Rust code. We do this by defining them in rust/helpers/
whenever the normal definition is #ifndef'd out.

Note that these helpers are somewhat unusual in that they do not have
the rust_helper_ prefix that most helpers have. Adding the rust_helper_
prefix does not compile, as 'bindings::_find_next_zero_bit()' will
result in a call to a symbol called _find_next_zero_bit as defined by
include/linux/find.h rather than a symbol with the rust_helper_ prefix.
This is because when a symbol is present in both include/ and
rust/helpers/, the one from include/ wins under the assumption that the
current configuration is one where that helper is unnecessary. This
heuristic fails for _find_next_zero_bit() because the header file always
declares it even if the symbol does not exist.

The functions still use the __rust_helper annotation. This lets the
wrapper function be inlined into Rust code even if full kernel LTO is
not used once the patch series for that feature lands.

Yury: arches are free to implement they own find_bit() functions. Most
rely on generic implementation, but arm32 and m86k - not; so they require
custom handling. Alice confirmed it fixes the build for both.

Cc: stable@vger.kernel.org
Fixes: 6cf93a9ed3 ("rust: add bindings for bitops.h")
Reported-by: Andreas Hindborg <a.hindborg@kernel.org>
Closes: https://rust-for-linux.zulipchat.com/#narrow/channel/x/topic/x/near/561677301
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
2026-01-13 22:16:39 -05:00
Mark Brown
6eb6b62f00
regulator: core: allow regulator_register() with
Merge series from André Draszik <andre.draszik@linaro.org>:

With these attached patches it becomes possible again to support
hardware designs with multiple PMICs where individual rails of each act
as required supplies for rails of the other (due to the latter being
e.g. always-on), and vice-versa.

Google Pixel 6 and 6 Pro (oriole and raven) are examples of such
designs.

Rather than returning -EPORBE_DEFER in regulator_register() when
set_machine_constraints() fails with -EPROBE_DEFER (due to missing
required supplies), we still allow rail registration and try to
reresolve supplies each time a new rail gets registered.

This is implemented using a bus (regulator bus), which allows the core
to reresolve supplies for regulators that still need them whenever new
regulators (i.e. devices) are added.

Using a bus also solves existing problems around late resolution of
supplies as mentioned in the commit message introducing that bus.

The series starts with a few bug fixes and the last two commits
implement the changes mentioned above, but do depend on the bug fixes.
2026-01-12 12:15:35 +00:00
Greg Kroah-Hartman
e92d336eaf Merge 6.19-rc5 into char-misc-next
We need the char/misc fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-01-12 08:51:13 +01:00
Alice Ryhl
abf2111d8d rust: helpers: Move #define __rust_helper out of atomic.c
In order to support inline helpers [1], we need to have __rust_helper
defined for all helper files. Current we are lucky that atomic.c is the
first file in helpers.c, but this is fragile. Thus, move it to
helpers.c.

[boqun: Reword the commit message and apply file hash changes]

Link: https://lore.kernel.org/r/20260105-define-rust-helper-v2-0-51da5f454a67@google.com [1]
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260107-move-rust_helper-define-v1-1-4109d58ef275@google.com
2026-01-09 19:01:42 +08:00
Alice Ryhl
5628f0510a rust: wait: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-25-51da5f454a67@google.com
2026-01-09 19:01:42 +08:00
Alice Ryhl
75b6034780 rust: time: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-22-51da5f454a67@google.com
2026-01-09 19:01:42 +08:00
Alice Ryhl
5f1193d55a rust: task: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-21-51da5f454a67@google.com
2026-01-09 19:01:42 +08:00
Alice Ryhl
d4ad4de929 rust: sync: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-20-51da5f454a67@google.com
2026-01-09 19:01:42 +08:00
Alice Ryhl
9ba1aaf25a rust: refcount: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-17-51da5f454a67@google.com
2026-01-09 19:01:42 +08:00
Alice Ryhl
5e03edaed3 rust: rcu: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Joel Fernandes (NVIDIA) <joel@joelfernandes.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-16-51da5f454a67@google.com
2026-01-09 19:01:42 +08:00
Alice Ryhl
a87e6fe873 rust: processor: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-13-51da5f454a67@google.com
2026-01-09 19:01:41 +08:00
Alice Ryhl
9f658bd537 rust: cpu: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-6-51da5f454a67@google.com
2026-01-09 19:01:41 +08:00
Alice Ryhl
1c7a6f48f7 rust: completion: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-5-51da5f454a67@google.com
2026-01-09 19:01:41 +08:00
Alice Ryhl
71a4d13fa1 rust: blk: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-2-51da5f454a67@google.com
2026-01-09 19:01:41 +08:00
Alice Ryhl
aa574e0f21 rust: barrier: Add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-1-51da5f454a67@google.com
2026-01-09 19:01:41 +08:00
FUJITA Tomonori
8de731a6c7 rust: helpers: Add i8/i16 atomic try_cmpxchg_relaxed helpers
Add i8/i16 atomic try_cmpxchg_relaxed helpers that call
try_cmpxchg_relaxed() macro implementing atomic try_cmpxchg_relaxed
using architecture-specific instructions.

[boqun: Use try_cmpxchg_relaxed() instead of raw_try_cmpxchg_relaxed()]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251227115951.1424458-5-fujita.tomonori@gmail.com
2026-01-09 19:01:41 +08:00
FUJITA Tomonori
b5992f07a9 rust: helpers: Add i8/i16 atomic try_cmpxchg_release helpers
Add i8/i16 atomic try_cmpxchg_release helpers that call
try_cmpxchg_release() macro implementing atomic try_cmpxchg_release
using architecture-specific instructions.

[boqun: Use try_cmpxchg_release() instead of raw_try_cmpxchg_release()]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251227115951.1424458-4-fujita.tomonori@gmail.com
2026-01-09 19:01:41 +08:00
FUJITA Tomonori
fed6aaa392 rust: helpers: Add i8/i16 atomic try_cmpxchg_acquire helpers
Add i8/i16 atomic try_cmpxchg_acquire helpers that call
try_cmpxchg_acquire() macro implementing atomic try_cmpxchg_acquire
using architecture-specific instructions.

[boqun: Use try_cmpxchg_acquire() instead of raw_try_cmpxchg_acquire()]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251227115951.1424458-3-fujita.tomonori@gmail.com
2026-01-09 19:01:41 +08:00
FUJITA Tomonori
164e4b5600 rust: helpers: Add i8/i16 atomic try_cmpxchg helpers
Add i8/i16 atomic try_cmpxchg helpers that call try_cmpxchg() macro
implementing atomic try_cmpxchg using architecture-specific
instructions.

[boqun: Add comments explaining CONFIG_ARCH_SUPPORTS_ATOMIC_RMW and use
try_cmpxchg() instead of raw_try_cmpxchg()]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251227115951.1424458-2-fujita.tomonori@gmail.com
2026-01-09 19:01:41 +08:00
FUJITA Tomonori
910cbddc41 rust: helpers: Add i8/i16 atomic xchg_relaxed helpers
Add i8/i16 atomic xchg_relaxed helpers that call xchg_relaxed() macro
implementing atomic xchg_relaxed using architecture-specific
instructions.

[boqun: Use xchg_relaxed() instead of raw_xchg_relaxed()]

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251223062140.938325-5-fujita.tomonori@gmail.com
2026-01-09 19:01:41 +08:00
FUJITA Tomonori
1bfca1e7e8 rust: helpers: Add i8/i16 atomic xchg_release helpers
Add i8/i16 atomic xchg_release helpers that call xchg_release() macro
implementing atomic xchg_release using architecture-specific
instructions.

[boqun: Use xchg_release() instead of raw_xchg_release()]

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251223062140.938325-4-fujita.tomonori@gmail.com
2026-01-09 19:01:40 +08:00
FUJITA Tomonori
ab717dd98b rust: helpers: Add i8/i16 atomic xchg_acquire helpers
Add i8/i16 atomic xchg_acquire helpers that call xchg_acquire() macro
implementing atomic xchg_acquire using architecture-specific
instructions.

[boqun: Use xchg_acquire() instead of raw_xchg_acquire()]

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251223062140.938325-3-fujita.tomonori@gmail.com
2026-01-09 19:01:40 +08:00
FUJITA Tomonori
5dbc0a6924 rust: helpers: Add i8/i16 atomic xchg helpers
Add i8/i16 atomic xchg helpers that call xchg() macro implementing
atomic xchg using architecture-specific instructions.

[boqun: Use xchg() instead of raw_xchg()]

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251223062140.938325-2-fujita.tomonori@gmail.com
2026-01-09 19:01:40 +08:00
FUJITA Tomonori
300e53b3d3 rust: helpers: Add i8/i16 relaxed atomic helpers
Add READ_ONCE/WRITE_ONCE based helpers for i8 and i16 types to support
relaxed atomic operations in Rust.

While relaxed operations could be implemented purely in Rust using
read_volatile() and write_volatile(), using C's READ_ONCE() and
WRITE_ONCE() macros ensures complete consistency with the kernel
memory model.

These helpers expose different symbol names than their C counterparts
so they are split into atomic_ext.c instead of atomic.c. The symbol
names; the names make the interface Rust/C clear, consistent with
i32/i64.

[boqun: Rename the functions from {load,store} to {read,set} to avoid
future adjustment]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251211113826.1299077-3-fujita.tomonori@gmail.com
2026-01-09 19:01:40 +08:00
FUJITA Tomonori
2cc3d5d6ad rust: helpers: Add i8/i16 atomic_read_acquire/atomic_set_release helpers
Add helper functions to expose smp_load_acquire() and
smp_store_release() for i8 and i16 types.

The smp_load_acquire() and smp_store_release() macros require type
information (sizeof) to generate appropriate architecture-specific
memory ordering instructions. Therefore, separate helper functions are
needed for each type size.

These helpers expose different symbol names than their C counterparts
so they are split into atomic_ext.c instead of atomic.c. The symbol
names; atomic_[i8|i16]_read_acquire and atomic_[i8|i16]_set_release
makes the interface Rust/C clear, consistent with i32/i64.

These helpers will be used by the upcoming Atomic<i8> and Atomic<i16>
implementation to provide proper Acquire/Release semantics across all
architectures.

[boqun: Rename the functions from {load,store} to {read,set} to avoid
future adjustment]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251211113826.1299077-2-fujita.tomonori@gmail.com
2026-01-09 19:01:40 +08:00
Alice Ryhl
d0f6fc3f7a rust: usb: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-24-51da5f454a67@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-01-07 16:12:15 +01:00
Alice Ryhl
2d38a4e3e2 rust: security: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2026-01-06 20:30:09 -05:00
Alice Ryhl
517fd96cba rust: cred: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2026-01-06 20:30:09 -05:00
Alice Ryhl
b4f1ffd632 rust: cpumask: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
2026-01-06 12:14:10 -05:00
Alice Ryhl
8618307b52 rust: bitops: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
2026-01-06 12:14:10 -05:00
Alice Ryhl
ac3dc186df rust: bitmap: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
2026-01-06 12:14:10 -05:00
Alice Ryhl
567b3d3af6 rust: kunit: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Link: https://lore.kernel.org/r/20251202-define-rust-helper-v1-22-a2e13cbc17a6@google.com
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2026-01-05 15:32:03 -07:00
Danilo Krummrich
7bf97992af Linux 6.19-rc3
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Merge tag 'v6.19-rc3' into driver-core-next

We need the driver-core fixes in here as well to build on top of.

Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-29 12:30:53 +01:00
Alice Ryhl
0c4ce29612 rust: binder: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-3-a2e13cbc17a6@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-12-29 12:10:47 +01:00
FUJITA Tomonori
d8932355f8 rust: dma: add helpers for architectures without CONFIG_HAS_DMA
Add dma_set_mask(), dma_set_coherent_mask(), dma_map_sgtable(), and
dma_max_mapping_size() helpers to fix a build error when
CONFIG_HAS_DMA is not enabled.

Note that when CONFIG_HAS_DMA is enabled, they are included in both
bindings_generated.rs and bindings_helpers_generated.rs. The former
takes precedence so behavior remains unchanged in that case.

This fixes the following build error on UML:

error[E0425]: cannot find function `dma_set_mask` in crate `bindings`
     --> rust/kernel/dma.rs:46:38
      |
   46 |         to_result(unsafe { bindings::dma_set_mask(self.as_ref().as_raw(), mask.value()) })
      |                                      ^^^^^^^^^^^^ help: a function with a similar name exists: `xa_set_mark`
      |
     ::: rust/bindings/bindings_generated.rs:24690:5
      |
24690 |     pub fn xa_set_mark(arg1: *mut xarray, index: ffi::c_ulong, arg2: xa_mark_t);
      |     ---------------------------------------------------------------------------- similarly named function `xa_set_mark` defined here

error[E0425]: cannot find function `dma_set_coherent_mask` in crate `bindings`
     --> rust/kernel/dma.rs:63:38
      |
   63 |         to_result(unsafe { bindings::dma_set_coherent_mask(self.as_ref().as_raw(), mask.value()) })
      |                                      ^^^^^^^^^^^^^^^^^^^^^ help: a function with a similar name exists: `dma_coherent_ok`
      |
     ::: rust/bindings/bindings_generated.rs:52745:5
      |
52745 |     pub fn dma_coherent_ok(dev: *mut device, phys: phys_addr_t, size: usize) -> bool_;
      |     ---------------------------------------------------------------------------------- similarly named function `dma_coherent_ok` defined here

error[E0425]: cannot find function `dma_map_sgtable` in crate `bindings`
    --> rust/kernel/scatterlist.rs:212:23
     |
 212 |               bindings::dma_map_sgtable(dev.as_raw(), sgt.as_ptr(), dir.into(), 0)
     |                         ^^^^^^^^^^^^^^^ help: a function with a similar name exists: `dma_unmap_sgtable`
     |
    ::: rust/bindings/bindings_helpers_generated.rs:1351:5
     |
1351 | /     pub fn dma_unmap_sgtable(
1352 | |         dev: *mut device,
1353 | |         sgt: *mut sg_table,
1354 | |         dir: dma_data_direction,
1355 | |         attrs: ffi::c_ulong,
1356 | |     );
     | |______- similarly named function `dma_unmap_sgtable` defined here

error[E0425]: cannot find function `dma_max_mapping_size` in crate `bindings`
   --> rust/kernel/scatterlist.rs:356:52
    |
356 |         let max_segment = match unsafe { bindings::dma_max_mapping_size(dev.as_raw()) } {
    |                                                    ^^^^^^^^^^^^^^^^^^^^ not found in `bindings`

error: aborting due to 4 previous errors

Cc: stable@vger.kernel.org # v6.17+
Fixes: 101d66828a ("rust: dma: add DMA addressing capabilities")
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251204160639.364936-1-fujita.tomonori@gmail.com
[ Use relative paths in the error splat; add 'dma' prefix. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-16 13:20:14 +01:00
Alice Ryhl
60c7398bde rust: drm: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-16-a2e13cbc17a6@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-15 22:43:08 +01:00
Alice Ryhl
e4b3118b61 rust: scatterlist: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-36-a2e13cbc17a6@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-15 22:39:42 +01:00
Alice Ryhl
74ca60bd85 rust: property: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-31-a2e13cbc17a6@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-15 22:39:42 +01:00
Alice Ryhl
d17772fcb5 rust: platform: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-28-a2e13cbc17a6@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-15 22:39:42 +01:00
Alice Ryhl
593e0b2234 rust: pci: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-26-a2e13cbc17a6@google.com
[ Consider latest helper additions. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-15 22:39:11 +01:00
Alice Ryhl
c7ff956344 rust: irq: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-20-a2e13cbc17a6@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-15 22:26:10 +01:00
Alice Ryhl
7aab0122a1 rust: io: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-19-a2e13cbc17a6@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-15 22:26:10 +01:00
Alice Ryhl
8a03afe947 rust: dma: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-15-a2e13cbc17a6@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-15 22:26:10 +01:00
Alice Ryhl
93c7fa7416 rust: device: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-14-a2e13cbc17a6@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-15 22:26:10 +01:00
Alice Ryhl
3365b71bc4 rust: auxiliary: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-1-a2e13cbc17a6@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-15 22:19:53 +01:00
Alice Ryhl
268eaa8ab4
rust: poll: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-29-a2e13cbc17a6@google.com
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-12-15 14:13:04 +01:00
Alice Ryhl
fc73d4b4d2
rust: pid_namespace: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-27-a2e13cbc17a6@google.com
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-12-15 14:13:03 +01:00
Alice Ryhl
b266a39eb2
rust: fs: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-18-a2e13cbc17a6@google.com
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-12-15 14:13:03 +01:00
Alice Ryhl
03d281f384 rust: regulator: add __rust_helper to helpers
This is needed to inline these helpers into Rust code.

Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251202-define-rust-helper-v1-35-a2e13cbc17a6@google.com
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-12-14 19:37:55 +09:00
Linus Torvalds
f5e9d31e79 USB/Thunderbolt changes for 6.19-rc1
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.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

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
  ...
2025-12-06 18:42:12 -08:00
Linus Torvalds
509d3f4584 Significant patch series in this pull request:
- The 6 patch series "panic: sys_info: Refactor and fix a potential
   issue" from Andy Shevchenko fixes a build issue and does some cleanup in
   ib/sys_info.c.
 
 - The 9 patch series "Implement mul_u64_u64_div_u64_roundup()" from
   David Laight enhances the 64-bit math code on behalf of a PWM driver and
   beefs up the test module for these library functions.
 
 - The 2 patch series "scripts/gdb/symbols: make BPF debug info available
   to GDB" from Ilya Leoshkevich makes BPF symbol names, sizes, and line
   numbers available to the GDB debugger.
 
 - The 4 patch series "Enable hung_task and lockup cases to dump system
   info on demand" from Feng Tang adds a sysctl which can be used to cause
   additional info dumping when the hung-task and lockup detectors fire.
 
 - The 6 patch series "lib/base64: add generic encoder/decoder, migrate
   users" from Kuan-Wei Chiu adds a general base64 encoder/decoder to lib/
   and migrates several users away from their private implementations.
 
 - The 2 patch series "rbree: inline rb_first() and rb_last()" from Eric
   Dumazet makes TCP a little faster.
 
 - The 9 patch series "liveupdate: Rework KHO for in-kernel users" from
   Pasha Tatashin reworks the KEXEC Handover interfaces in preparation for
   Live Update Orchestrator (LUO), and possibly for other future clients.
 
 - The 13 patch series "kho: simplify state machine and enable dynamic
   updates" from Pasha Tatashin increases the flexibility of KEXEC
   Handover.  Also preparation for LUO.
 
 - The 18 patch series "Live Update Orchestrator" from Pasha Tatashin is
   a major new feature targeted at cloud environments.  Quoting the [0/N]:
 
     This series introduces the Live Update Orchestrator, a kernel subsystem
     designed to facilitate live kernel updates using a kexec-based reboot.
     This capability is critical for cloud environments, allowing hypervisors
     to be updated with minimal downtime for running virtual machines.  LUO
     achieves this by preserving the state of selected resources, such as
     memory, devices and their dependencies, across the kernel transition.
 
     As a key feature, this series includes support for preserving memfd file
     descriptors, which allows critical in-memory data, such as guest RAM or
     any other large memory region, to be maintained in RAM across the kexec
     reboot.
 
   Mike Rappaport merits a mention here, for his extensive review and
   testing work.
 
 - The 3 patch series "kexec: reorganize kexec and kdump sysfs" from
   Sourabh Jain moves the kexec and kdump sysfs entries from /sys/kernel/
   to /sys/kernel/kexec/ and adds back-compatibility symlinks which can
   hopefully be removed one day.
 
 - The 2 patch series "kho: fixes for vmalloc restoration" from Mike
   Rapoport fixes a BUG which was being hit during KHO restoration of
   vmalloc() regions.
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Merge tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - "panic: sys_info: Refactor and fix a potential issue" (Andy Shevchenko)
   fixes a build issue and does some cleanup in ib/sys_info.c

 - "Implement mul_u64_u64_div_u64_roundup()" (David Laight)
   enhances the 64-bit math code on behalf of a PWM driver and beefs up
   the test module for these library functions

 - "scripts/gdb/symbols: make BPF debug info available to GDB" (Ilya Leoshkevich)
   makes BPF symbol names, sizes, and line numbers available to the GDB
   debugger

 - "Enable hung_task and lockup cases to dump system info on demand" (Feng Tang)
   adds a sysctl which can be used to cause additional info dumping when
   the hung-task and lockup detectors fire

 - "lib/base64: add generic encoder/decoder, migrate users" (Kuan-Wei Chiu)
   adds a general base64 encoder/decoder to lib/ and migrates several
   users away from their private implementations

 - "rbree: inline rb_first() and rb_last()" (Eric Dumazet)
   makes TCP a little faster

 - "liveupdate: Rework KHO for in-kernel users" (Pasha Tatashin)
   reworks the KEXEC Handover interfaces in preparation for Live Update
   Orchestrator (LUO), and possibly for other future clients

 - "kho: simplify state machine and enable dynamic updates" (Pasha Tatashin)
   increases the flexibility of KEXEC Handover. Also preparation for LUO

 - "Live Update Orchestrator" (Pasha Tatashin)
   is a major new feature targeted at cloud environments. Quoting the
   cover letter:

      This series introduces the Live Update Orchestrator, a kernel
      subsystem designed to facilitate live kernel updates using a
      kexec-based reboot. This capability is critical for cloud
      environments, allowing hypervisors to be updated with minimal
      downtime for running virtual machines. LUO achieves this by
      preserving the state of selected resources, such as memory,
      devices and their dependencies, across the kernel transition.

      As a key feature, this series includes support for preserving
      memfd file descriptors, which allows critical in-memory data, such
      as guest RAM or any other large memory region, to be maintained in
      RAM across the kexec reboot.

   Mike Rappaport merits a mention here, for his extensive review and
   testing work.

 - "kexec: reorganize kexec and kdump sysfs" (Sourabh Jain)
   moves the kexec and kdump sysfs entries from /sys/kernel/ to
   /sys/kernel/kexec/ and adds back-compatibility symlinks which can
   hopefully be removed one day

 - "kho: fixes for vmalloc restoration" (Mike Rapoport)
   fixes a BUG which was being hit during KHO restoration of vmalloc()
   regions

* tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (139 commits)
  calibrate: update header inclusion
  Reinstate "resource: avoid unnecessary lookups in find_next_iomem_res()"
  vmcoreinfo: track and log recoverable hardware errors
  kho: fix restoring of contiguous ranges of order-0 pages
  kho: kho_restore_vmalloc: fix initialization of pages array
  MAINTAINERS: TPM DEVICE DRIVER: update the W-tag
  init: replace simple_strtoul with kstrtoul to improve lpj_setup
  KHO: fix boot failure due to kmemleak access to non-PRESENT pages
  Documentation/ABI: new kexec and kdump sysfs interface
  Documentation/ABI: mark old kexec sysfs deprecated
  kexec: move sysfs entries to /sys/kernel/kexec
  test_kho: always print restore status
  kho: free chunks using free_page() instead of kfree()
  selftests/liveupdate: add kexec test for multiple and empty sessions
  selftests/liveupdate: add simple kexec-based selftest for LUO
  selftests/liveupdate: add userspace API selftests
  docs: add documentation for memfd preservation via LUO
  mm: memfd_luo: allow preserving memfd
  liveupdate: luo_file: add private argument to store runtime state
  mm: shmem: export some functions to internal.h
  ...
2025-12-06 14:01:20 -08:00
Linus Torvalds
416f99c3b1 Driver core changes for 6.19-rc1
- Arch Topology:
   - Move parse_acpi_topology() from arm64 to common code for reuse in RISC-V
 
 - CPU:
   - Expose housekeeping CPUs through /sys/devices/system/cpu/housekeeping
   - Print a newline (or 0x0A) instead of '(null)' reading
     /sys/devices/system/cpu/nohz_full when nohz_full= is not set
 
 - debugfs
   - Remove (broken) 'no-mount' mode
   - Remove redundant access mode checks in debugfs_get_tree() and
     debugfs_create_*() functions
 
 - Devres:
   - Remove unused devm_free_percpu() helper
   - Move devm_alloc_percpu() from device.h to devres.h
 
 - Firmware Loader:
   - Replace simple_strtol() with kstrtoint()
   - Do not call cancel_store() when no upload is in progress
 
 - kernfs:
   - Increase struct super_block::maxbytes to MAX_LFS_FILESIZE
   - Fix a missing unwind path in __kernfs_new_node()
 
 - Misc:
   - Increase the name size in struct auxiliary_device_id to 40 characters
   - Replace system_unbound_wq with system_dfl_wq and add WQ_PERCPU to
     alloc_workqueue()
 
 - Platform:
   - Replace ERR_PTR() with IOMEM_ERR_PTR() in platform ioremap functions
 
 - Rust:
   - Auxiliary:
     - Unregister auxiliary device on parent device unbind
     - Move parent() to impl Device; implement device context aware parent() for
       Device<Bound>
     - Illustrate how to safely obtain a driver's device private data when
       calling from an auxiliary driver into the parant device driver
 
   - DebugFs:
     - Implement support for binary large objects
 
   - Device:
     - Let probe() return the driver's device private data as pinned initializer,
       i.e. impl PinInit<Self, Error>
     - Implement safe accessor for a driver's device private data for
       Device<Bound> (returned reference can't out-live driver binding and
       guarantees the correct private data type)
     - Implement AsBusDevice trait, to be used by class device abstractions to
       derive the bus device type of the parent device
 
   - DMA:
     - Store raw pointer of allocation as NonNull
     - Use start_ptr() and start_ptr_mut() to inherit correct mutability of self
 
   - FS:
     - Add file::Offset type alias
 
   - I2C:
     - Add abstractions for I2C device / driver infrastructure
     - Implement abstractions for manual I2C device registrations
 
   - I/O:
     - Use "kernel vertical" style for imports
     - Define ResourceSize as resource_size_t
     - Move ResourceSize to top-level I/O module
     - Add type alias for phys_addr_t
     - Implement Rust version of read_poll_timeout_atomic()
 
   - PCI:
     - Use "kernel vertical" style for imports
     - Move I/O and IRQ infrastructure to separate files
     - Add support for PCI interrupt vectors
     - Implement TryInto<IrqRequest<'a>> for IrqVector<'a> to convert an
       IrqVector bound to specific pci::Device into an IrqRequest bound to the
       same pci::Device's parent Device
     - Leverage pin_init_scope() to get rid of redundant Result in IRQ methods
 
   - PinInit:
     - Add {pin_}init_scope() to execute code before creating an initializer
 
   - Platform:
     - Leverage pin_init_scope() to get rid of redundant Result in IRQ methods
 
   - Timekeeping:
     - Implement abstraction of udelay()
 
   - Uaccess:
     - Implement read_slice_partial() and read_slice_file() for UserSliceReader
     - Implement write_slice_partial() and write_slice_file() for UserSliceWriter
 
 - sysfs
   - Prepare the constification of struct attribute
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Merge tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core

Pull driver core updates from Danilo Krummrich:
 "Arch Topology:
   - Move parse_acpi_topology() from arm64 to common code for reuse in
     RISC-V

  CPU:
   - Expose housekeeping CPUs through /sys/devices/system/cpu/housekeeping
   - Print a newline (or 0x0A) instead of '(null)' reading
     /sys/devices/system/cpu/nohz_full when nohz_full= is not set

  debugfs
   - Remove (broken) 'no-mount' mode
   - Remove redundant access mode checks in debugfs_get_tree() and
     debugfs_create_*() functions

  Devres:
   - Remove unused devm_free_percpu() helper
   - Move devm_alloc_percpu() from device.h to devres.h

  Firmware Loader:
   - Replace simple_strtol() with kstrtoint()
   - Do not call cancel_store() when no upload is in progress

  kernfs:
   - Increase struct super_block::maxbytes to MAX_LFS_FILESIZE
   - Fix a missing unwind path in __kernfs_new_node()

  Misc:
   - Increase the name size in struct auxiliary_device_id to 40
     characters
   - Replace system_unbound_wq with system_dfl_wq and add WQ_PERCPU to
     alloc_workqueue()

  Platform:
   - Replace ERR_PTR() with IOMEM_ERR_PTR() in platform ioremap
     functions

  Rust:
   - Auxiliary:
      - Unregister auxiliary device on parent device unbind
      - Move parent() to impl Device; implement device context aware
        parent() for Device<Bound>
      - Illustrate how to safely obtain a driver's device private data
        when calling from an auxiliary driver into the parant device
        driver

   - DebugFs:
      - Implement support for binary large objects

   - Device:
      - Let probe() return the driver's device private data as pinned
        initializer, i.e. impl PinInit<Self, Error>
      - Implement safe accessor for a driver's device private data for
        Device<Bound> (returned reference can't out-live driver binding
        and guarantees the correct private data type)
      - Implement AsBusDevice trait, to be used by class device
        abstractions to derive the bus device type of the parent device

   - DMA:
      - Store raw pointer of allocation as NonNull
      - Use start_ptr() and start_ptr_mut() to inherit correct
        mutability of self

   - FS:
      - Add file::Offset type alias

   - I2C:
      - Add abstractions for I2C device / driver infrastructure
      - Implement abstractions for manual I2C device registrations

   - I/O:
      - Use "kernel vertical" style for imports
      - Define ResourceSize as resource_size_t
      - Move ResourceSize to top-level I/O module
      - Add type alias for phys_addr_t
      - Implement Rust version of read_poll_timeout_atomic()

   - PCI:
      - Use "kernel vertical" style for imports
      - Move I/O and IRQ infrastructure to separate files
      - Add support for PCI interrupt vectors
      - Implement TryInto<IrqRequest<'a>> for IrqVector<'a> to convert
        an IrqVector bound to specific pci::Device into an IrqRequest
        bound to the same pci::Device's parent Device
      - Leverage pin_init_scope() to get rid of redundant Result in IRQ
        methods

   - PinInit:
      - Add {pin_}init_scope() to execute code before creating an
        initializer

   - Platform:
      - Leverage pin_init_scope() to get rid of redundant Result in IRQ
        methods

   - Timekeeping:
      - Implement abstraction of udelay()

   - Uaccess:
      - Implement read_slice_partial() and read_slice_file() for
        UserSliceReader
      - Implement write_slice_partial() and write_slice_file() for
        UserSliceWriter

  sysfs:
   - Prepare the constification of struct attribute"

* tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (75 commits)
  rust: pci: fix build failure when CONFIG_PCI_MSI is disabled
  debugfs: Fix default access mode config check
  debugfs: Remove broken no-mount mode
  debugfs: Remove redundant access mode checks
  driver core: Check drivers_autoprobe for all added devices
  driver core: WQ_PERCPU added to alloc_workqueue users
  driver core: replace use of system_unbound_wq with system_dfl_wq
  tick/nohz: Expose housekeeping CPUs in sysfs
  tick/nohz: avoid showing '(null)' if nohz_full= not set
  sysfs/cpu: Use DEVICE_ATTR_RO for nohz_full attribute
  kernfs: fix memory leak of kernfs_iattrs in __kernfs_new_node
  fs/kernfs: raise sb->maxbytes to MAX_LFS_FILESIZE
  mod_devicetable: Bump auxiliary_device_id name size
  sysfs: simplify attribute definition macros
  samples/kobject: constify 'struct foo_attribute'
  samples/kobject: add is_visible() callback to attribute group
  sysfs: attribute_group: enable const variants of is_visible()
  sysfs: introduce __SYSFS_FUNCTION_ALTERNATIVE()
  sysfs: transparently handle const pointers in ATTRIBUTE_GROUPS()
  sysfs: attribute_group: allow registration of const attribute
  ...
2025-12-05 21:29:02 -08:00
Danilo Krummrich
473b9f3317 rust: pci: fix build failure when CONFIG_PCI_MSI is disabled
When CONFIG_PCI_MSI is disabled pci_alloc_irq_vectors() and
pci_free_irq_vectors() are defined as inline functions and hence require
a Rust helper.

	error[E0425]: cannot find function `pci_alloc_irq_vectors` in crate `bindings`
	    --> rust/kernel/pci/irq.rs:144:23
	     |
	 144 | ...s::pci_alloc_irq_vectors(dev.as_raw(), min_vecs, max_vecs, irq_types.as_raw())
	     |       ^^^^^^^^^^^^^^^^^^^^^ help: a function with a similar name exists: `pci_irq_vector`
	     |
	    ::: .../rust/bindings/bindings_helpers_generated.rs:1197:5
	     |
	1197 |     pub fn pci_irq_vector(pdev: *mut pci_dev, nvec: ffi::c_uint) -> ffi::c_int;
	     |     --------------------------------------------------------------------------- similarly named function `pci_irq_vector` defined here

	error[E0425]: cannot find function `pci_free_irq_vectors` in crate `bindings`
	    --> rust/kernel/pci/irq.rs:170:28
	     |
	 170 |         unsafe { bindings::pci_free_irq_vectors(self.dev.as_raw()) };
	     |                            ^^^^^^^^^^^^^^^^^^^^ help: a function with a similar name exists: `pci_irq_vector`
	     |
	    ::: .../rust/bindings/bindings_helpers_generated.rs:1197:5
	     |
	1197 |     pub fn pci_irq_vector(pdev: *mut pci_dev, nvec: ffi::c_uint) -> ffi::c_int;
	     |     --------------------------------------------------------------------------- similarly named function `pci_irq_vector` defined here

	error: aborting due to 2 previous errors

Fix this by adding the corresponding helpers.

Fixes: 340ccc9735 ("rust: pci: Allocate and manage PCI interrupt vectors")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512012238.YgVvRRUx-lkp@intel.com/
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Link: https://patch.msgid.link/20251202210501.40998-1-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-12-04 00:24:47 +13:00
Eric Dumazet
94984bfed5 rbtree: inline rb_last()
This is a very small function, inlining it saves cpu cycles in TCP by
reducing register pressure and removing call/ret overhead.

It also reduces vmlinux text size by 122 bytes on a typical x86_64 build.

Before:

size vmlinux
   text    data     bss     dec     hex filename
34811781        22177365        5685248 62674394        3bc55da vmlinux

After:

size vmlinux
   text	   data	    bss	    dec	    hex	filename
34811659	22177365	5685248	62674272	3bc5560	vmlinux

[ojeda@kernel.org: fix rust build]
  Link: https://lkml.kernel.org/r/20251120085518.1463498-1-ojeda@kernel.org
Link: https://lkml.kernel.org/r/20251114140646.3817319-3-edumazet@google.com
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Cc: Jakub Kacinski <kuba@kernel.org>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Stehen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-27 14:24:30 -08:00
Eric Dumazet
c2d2dad245 rbtree: inline rb_first()
Patch series "rbree: inline rb_first() and rb_last()".

Inline these two small helpers, heavily used in TCP and FQ packet scheduler,
and in many other places.

This reduces kernel text size, and brings an 1.5 % improvement on network
TCP stress test.


This patch (of 2):

This is a very small function, inlining it saves cpu cycles by reducing
register pressure and removing call/ret overhead.

It also reduces vmlinux text size by 744 bytes on a typical x86_64 build.

Before:

size vmlinux
   text	   data	    bss	    dec	    hex	filename
34812525	22177365	5685248	62675138	3bc58c2	vmlinux

After:

size vmlinux
   text	   data	    bss	    dec	    hex	filename
34811781	22177365	5685248	62674394	3bc55da	vmlinux

[ojeda@kernel.org: fix rust build]
  Link: https://lkml.kernel.org/r/20251120085518.1463498-1-ojeda@kernel.org
Link: https://lkml.kernel.org/r/20251114140646.3817319-1-edumazet@google.com
Link: https://lkml.kernel.org/r/20251114140646.3817319-2-edumazet@google.com
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Cc: Jakub Kacinski <kuba@kernel.org>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Stehen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-27 14:24:30 -08:00
Yury Norov (NVIDIA)
d99dc586ca uaccess: decouple INLINE_COPY_FROM_USER and CONFIG_RUST
Commit 1f9a8286bc ("uaccess: always export _copy_[from|to]_user with
CONFIG_RUST") exports _copy_{from,to}_user() unconditionally, if RUST is
enabled.  This pollutes exported symbols namespace, and spreads RUST
ifdefery in core files.

It's better to declare a corresponding helper under the rust/helpers,
similarly to how non-underscored copy_{from,to}_user() is handled.

[yury.norov@gmail.com: drop rust part of comment for _copy_from_user(), per Alice]
  Link: https://lkml.kernel.org/r/20251024154754.99768-1-yury.norov@gmail.com
Link: https://lkml.kernel.org/r/20251023171607.1171534-1-yury.norov@gmail.com
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Cc: Alex Gaynor <alex.gaynor@gmail.com>
Cc: Andreas Hindborg <a.hindborg@kernel.org>
Cc: Björn Roy Baron <bjorn3_gh@protonmail.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Gary Guo <gary@garyguo.net>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Trevor Gross <tmgross@umich.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-12 10:00:16 -08:00
Michal Wilczynski
7b3dce814a rust: pwm: Add Kconfig and basic data structures
Introduce the foundational support for PWM abstractions in Rust.

This commit adds the `RUST_PWM_ABSTRACTIONS` Kconfig option to enable
the feature, along with the necessary build-system support and C
helpers.

It also introduces the first set of safe wrappers for the PWM
subsystem, covering the basic data carrying C structs and enums:
- `Polarity`: A safe wrapper for `enum pwm_polarity`.
- `Waveform`: A wrapper for `struct pwm_waveform`.
- `State`: A wrapper for `struct pwm_state`.

These types provide memory safe, idiomatic Rust representations of the
core PWM data structures and form the building blocks for the
abstractions that will follow.

Tested-by: Drew Fustini <fustini@kernel.org>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Elle Rhumsaa <elle@weathered-steel.dev>
Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>
Link: https://patch.msgid.link/20251016-rust-next-pwm-working-fan-for-sending-v16-2-a5df2405d2bd@samsung.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
2025-11-07 10:03:54 +01:00
FUJITA Tomonori
ad68b55a9e rust: add udelay() function
Add udelay() function, inserts a delay based on microseconds with busy
waiting, in preparation for supporting read_poll_timeout_atomic().

Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Acked-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://patch.msgid.link/20251103112958.2961517-2-fujita.tomonori@gmail.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-11-04 13:25:29 +01:00
Greg Kroah-Hartman
9a55e00792 Revert "USB: disable rust bindings from the build for now"
This reverts commit c584a1c7c8.

It brings the rust bindings for USB back into the build so that we can
work off of this for future kernel releases.

Link: https://lore.kernel.org/r/2025100827-divorcee-steadier-b40b@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-10-13 09:34:44 +02:00
Linus Torvalds
6093a688a0 Char/Misc/IIO/Binder changes for 6.18-rc1
Here is the big set of char/misc/iio and other driver subsystem changes
 for 6.18-rc1.  Loads of different stuff in here, it was a busy
 development cycle in lots of different subsystems, with over 27k new
 lines added to the tree.  Included in here are:
   - IIO updates including new drivers, reworking of existing apis, and
     other goodness in the sensor subsystems
   - MEI driver updates and additions
   - NVMEM driver updates
   - slimbus removal for an unused driver and some other minor
     updates
   - coresight driver updates and additions
   - MHI driver updates
   - comedi driver updates and fixes
   - extcon driver updates
   - interconnect driver additions
   - eeprom driver updates and fixes
   - minor UIO driver updates
   - tiny W1 driver updates
 
 But the majority of new code is in the rust bindings and additions,
 which includes:
   - misc driver rust binding updates for read/write support, we can now
     write "normal" misc drivers in rust fully, and the sample driver
     shows how this can be done.
   - Initial framework for USB driver rust bindings, which are disabled
     for now in the build, due to limited support, but coming in through
     this tree due to dependencies on other rust binding changes that
     were in here.  I'll be enabling these back on in the build in the
     usb.git tree after -rc1 is out so that developers can continue to
     work on these in linux-next over the next development cycle.
   - Android Binder driver implemented in Rust.  This is the big one, and
     was driving a huge majority of the rust binding work over the past
     years.  Right now there are 2 binder drivers in the kernel, selected
     only at build time as to which one to use as binder wants to be
     included in the system at boot time.  The binder C maintainers all
     agreed on this, as eventually, they want the C code to be removed from
     the tree, but it will take a few releases to get there while both
     are maintained to ensure that the rust implementation is fully
     stable and compliant with the existing userspace apis.
 
 All of these have been in linux-next for a while, with only minor merge
 issues showing up (you will hit them as well.)  Just accept both sides
 of the merge, it's just some header and include file lines, nothing
 major.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull Char/Misc/IIO/Binder updates from Greg KH:
 "Here is the big set of char/misc/iio and other driver subsystem
  changes for 6.18-rc1.

  Loads of different stuff in here, it was a busy development cycle in
  lots of different subsystems, with over 27k new lines added to the
  tree.

  Included in here are:

   - IIO updates including new drivers, reworking of existing apis, and
     other goodness in the sensor subsystems

   - MEI driver updates and additions

   - NVMEM driver updates

   - slimbus removal for an unused driver and some other minor updates

   - coresight driver updates and additions

   - MHI driver updates

   - comedi driver updates and fixes

   - extcon driver updates

   - interconnect driver additions

   - eeprom driver updates and fixes

   - minor UIO driver updates

   - tiny W1 driver updates

  But the majority of new code is in the rust bindings and additions,
  which includes:

   - misc driver rust binding updates for read/write support, we can now
     write "normal" misc drivers in rust fully, and the sample driver
     shows how this can be done.

   - Initial framework for USB driver rust bindings, which are disabled
     for now in the build, due to limited support, but coming in through
     this tree due to dependencies on other rust binding changes that
     were in here. I'll be enabling these back on in the build in the
     usb.git tree after -rc1 is out so that developers can continue to
     work on these in linux-next over the next development cycle.

   - Android Binder driver implemented in Rust.

     This is the big one, and was driving a huge majority of the rust
     binding work over the past years. Right now there are two binder
     drivers in the kernel, selected only at build time as to which one
     to use as binder wants to be included in the system at boot time.

     The binder C maintainers all agreed on this, as eventually, they
     want the C code to be removed from the tree, but it will take a few
     releases to get there while both are maintained to ensure that the
     rust implementation is fully stable and compliant with the existing
     userspace apis.

  All of these have been in linux-next for a while"

* tag 'char-misc-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (320 commits)
  rust: usb: keep usb::Device private for now
  rust: usb: don't retain device context for the interface parent
  USB: disable rust bindings from the build for now
  samples: rust: add a USB driver sample
  rust: usb: add basic USB abstractions
  coresight: Add label sysfs node support
  dt-bindings: arm: Add label in the coresight components
  coresight: tnoc: add new AMBA ID to support Trace Noc V2
  coresight: Fix incorrect handling for return value of devm_kzalloc
  coresight: tpda: fix the logic to setup the element size
  coresight: trbe: Return NULL pointer for allocation failures
  coresight: Refactor runtime PM
  coresight: Make clock sequence consistent
  coresight: Refactor driver data allocation
  coresight: Consolidate clock enabling
  coresight: Avoid enable programming clock duplicately
  coresight: Appropriately disable trace bus clocks
  coresight: Appropriately disable programming clocks
  coresight: etm4x: Support atclk
  coresight: catu: Support atclk
  ...
2025-10-04 16:26:32 -07:00
Linus Torvalds
8804d970fa Summary of significant series in this pull request:
- The 3 patch series "mm, swap: improve cluster scan strategy" from
   Kairui Song improves performance and reduces the failure rate of swap
   cluster allocation.
 
 - The 4 patch series "support large align and nid in Rust allocators"
   from Vitaly Wool permits Rust allocators to set NUMA node and large
   alignment when perforning slub and vmalloc reallocs.
 
 - The 2 patch series "mm/damon/vaddr: support stat-purpose DAMOS" from
   Yueyang Pan extend DAMOS_STAT's handling of the DAMON operations sets
   for virtual address spaces for ops-level DAMOS filters.
 
 - The 3 patch series "execute PROCMAP_QUERY ioctl under per-vma lock"
   from Suren Baghdasaryan reduces mmap_lock contention during reads of
   /proc/pid/maps.
 
 - The 2 patch series "mm/mincore: minor clean up for swap cache
   checking" from Kairui Song performs some cleanup in the swap code.
 
 - The 11 patch series "mm: vm_normal_page*() improvements" from David
   Hildenbrand provides code cleanup in the pagemap code.
 
 - The 5 patch series "add persistent huge zero folio support" from
   Pankaj Raghav provides a block layer speedup by optionalls making the
   huge_zero_pagepersistent, instead of releasing it when its refcount
   falls to zero.
 
 - The 3 patch series "kho: fixes and cleanups" from Mike Rapoport adds a
   few touchups to the recently added Kexec Handover feature.
 
 - The 10 patch series "mm: make mm->flags a bitmap and 64-bit on all
   arches" from Lorenzo Stoakes turns mm_struct.flags into a bitmap.  To
   end the constant struggle with space shortage on 32-bit conflicting with
   64-bit's needs.
 
 - The 2 patch series "mm/swapfile.c and swap.h cleanup" from Chris Li
   cleans up some swap code.
 
 - The 7 patch series "selftests/mm: Fix false positives and skip
   unsupported tests" from Donet Tom fixes a few things in our selftests
   code.
 
 - The 7 patch series "prctl: extend PR_SET_THP_DISABLE to only provide
   THPs when advised" from David Hildenbrand "allows individual processes
   to opt-out of THP=always into THP=madvise, without affecting other
   workloads on the system".
 
   It's a long story - the [1/N] changelog spells out the considerations.
 
 - The 11 patch series "Add and use memdesc_flags_t" from Matthew Wilcox
   gets us started on the memdesc project.  Please see
   https://kernelnewbies.org/MatthewWilcox/Memdescs and
   https://blogs.oracle.com/linux/post/introducing-memdesc.
 
 - The 3 patch series "Tiny optimization for large read operations" from
   Chi Zhiling improves the efficiency of the pagecache read path.
 
 - The 5 patch series "Better split_huge_page_test result check" from Zi
   Yan improves our folio splitting selftest code.
 
 - The 2 patch series "test that rmap behaves as expected" from Wei Yang
   adds some rmap selftests.
 
 - The 3 patch series "remove write_cache_pages()" from Christoph Hellwig
   removes that function and converts its two remaining callers.
 
 - The 2 patch series "selftests/mm: uffd-stress fixes" from Dev Jain
   fixes some UFFD selftests issues.
 
 - The 3 patch series "introduce kernel file mapped folios" from Boris
   Burkov introduces the concept of "kernel file pages".  Using these
   permits btrfs to account its metadata pages to the root cgroup, rather
   than to the cgroups of random inappropriate tasks.
 
 - The 2 patch series "mm/pageblock: improve readability of some
   pageblock handling" from Wei Yang provides some readability improvements
   to the page allocator code.
 
 - The 11 patch series "mm/damon: support ARM32 with LPAE" from SeongJae
   Park teaches DAMON to understand arm32 highmem.
 
 - The 4 patch series "tools: testing: Use existing atomic.h for
   vma/maple tests" from Brendan Jackman performs some code cleanups and
   deduplication under tools/testing/.
 
 - The 2 patch series "maple_tree: Fix testing for 32bit compiles" from
   Liam Howlett fixes a couple of 32-bit issues in
   tools/testing/radix-tree.c.
 
 - The 2 patch series "kasan: unify kasan_enabled() and remove
   arch-specific implementations" from Sabyrzhan Tasbolatov moves KASAN
   arch-specific initialization code into a common arch-neutral
   implementation.
 
 - The 3 patch series "mm: remove zpool" from Johannes Weiner removes
   zspool - an indirection layer which now only redirects to a single thing
   (zsmalloc).
 
 - The 2 patch series "mm: task_stack: Stack handling cleanups" from
   Pasha Tatashin makes a couple of cleanups in the fork code.
 
 - The 37 patch series "mm: remove nth_page()" from David Hildenbrand
   makes rather a lot of adjustments at various nth_page() callsites,
   eventually permitting the removal of that undesirable helper function.
 
 - The 2 patch series "introduce kasan.write_only option in hw-tags" from
   Yeoreum Yun creates a KASAN read-only mode for ARM, using that
   architecture's memory tagging feature.  It is felt that a read-only mode
   KASAN is suitable for use in production systems rather than debug-only.
 
 - The 3 patch series "mm: hugetlb: cleanup hugetlb folio allocation"
   from Kefeng Wang does some tidying in the hugetlb folio allocation code.
 
 - The 12 patch series "mm: establish const-correctness for pointer
   parameters" from Max Kellermann makes quite a number of the MM API
   functions more accurate about the constness of their arguments.  This
   was getting in the way of subsystems (in this case CEPH) when they
   attempt to improving their own const/non-const accuracy.
 
 - The 7 patch series "Cleanup free_pages() misuse" from Vishal Moola
   fixes a number of code sites which were confused over when to use
   free_pages() vs __free_pages().
 
 - The 3 patch series "Add Rust abstraction for Maple Trees" from Alice
   Ryhl makes the mapletree code accessible to Rust.  Required by nouveau
   and by its forthcoming successor: the new Rust Nova driver.
 
 - The 2 patch series "selftests/mm: split_huge_page_test:
   split_pte_mapped_thp improvements" from David Hildenbrand adds a fix and
   some cleanups to the thp selftesting code.
 
 - The 14 patch series "mm, swap: introduce swap table as swap cache
   (phase I)" from Chris Li and Kairui Song is the first step along the
   path to implementing "swap tables" - a new approach to swap allocation
   and state tracking which is expected to yield speed and space
   improvements.  This patchset itself yields a 5-20% performance benefit
   in some situations.
 
 - The 3 patch series "Some ptdesc cleanups" from Matthew Wilcox utilizes
   the new memdesc layer to clean up the ptdesc code a little.
 
 - The 3 patch series "Fix va_high_addr_switch.sh test failure" from
   Chunyu Hu fixes some issues in our 5-level pagetable selftesting code.
 
 - The 2 patch series "Minor fixes for memory allocation profiling" from
   Suren Baghdasaryan addresses a couple of minor issues in relatively new
   memory allocation profiling feature.
 
 - The 3 patch series "Small cleanups" from Matthew Wilcox has a few
   cleanups in preparation for more memdesc work.
 
 - The 2 patch series "mm/damon: add addr_unit for DAMON_LRU_SORT and
   DAMON_RECLAIM" from Quanmin Yan makes some changes to DAMON in
   furtherance of supporting arm highmem.
 
 - The 2 patch series "selftests/mm: Add -Wunreachable-code and fix
   warnings" from Muhammad Anjum adds that compiler check to selftests code
   and fixes the fallout, by removing dead code.
 
 - The 10 patch series "Improvements to Victim Process Thawing and OOM
   Reaper Traversal Order" from zhongjinji makes a number of improvements
   in the OOM killer: mainly thawing a more appropriate group of victim
   threads so they can release resources.
 
 - The 5 patch series "mm/damon: misc fixups and improvements for 6.18"
   from SeongJae Park is a bunch of small and unrelated fixups for DAMON.
 
 - The 7 patch series "mm/damon: define and use DAMON initialization
   check function" from SeongJae Park implement reliability and
   maintainability improvements to a recently-added bug fix.
 
 - The 2 patch series "mm/damon/stat: expose auto-tuned intervals and
   non-idle ages" from SeongJae Park provides additional transparency to
   userspace clients of the DAMON_STAT information.
 
 - The 2 patch series "Expand scope of khugepaged anonymous collapse"
   from Dev Jain removes some constraints on khubepaged's collapsing of
   anon VMAs.  It also increases the success rate of MADV_COLLAPSE against
   an anon vma.
 
 - The 2 patch series "mm: do not assume file == vma->vm_file in
   compat_vma_mmap_prepare()" from Lorenzo Stoakes moves us further towards
   removal of file_operations.mmap().  This patchset concentrates upon
   clearing up the treatment of stacked filesystems.
 
 - The 6 patch series "mm: Improve mlock tracking for large folios" from
   Kiryl Shutsemau provides some fixes and improvements to mlock's tracking
   of large folios.  /proc/meminfo's "Mlocked" field became more accurate.
 
 - The 2 patch series "mm/ksm: Fix incorrect accounting of KSM counters
   during fork" from Donet Tom fixes several user-visible KSM stats
   inaccuracies across forks and adds selftest code to verify these
   counters.
 
 - The 2 patch series "mm_slot: fix the usage of mm_slot_entry" from Wei
   Yang addresses some potential but presently benign issues in KSM's
   mm_slot handling.
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Merge tag 'mm-stable-2025-10-01-19-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - "mm, swap: improve cluster scan strategy" from Kairui Song improves
   performance and reduces the failure rate of swap cluster allocation

 - "support large align and nid in Rust allocators" from Vitaly Wool
   permits Rust allocators to set NUMA node and large alignment when
   perforning slub and vmalloc reallocs

 - "mm/damon/vaddr: support stat-purpose DAMOS" from Yueyang Pan extend
   DAMOS_STAT's handling of the DAMON operations sets for virtual
   address spaces for ops-level DAMOS filters

 - "execute PROCMAP_QUERY ioctl under per-vma lock" from Suren
   Baghdasaryan reduces mmap_lock contention during reads of
   /proc/pid/maps

 - "mm/mincore: minor clean up for swap cache checking" from Kairui Song
   performs some cleanup in the swap code

 - "mm: vm_normal_page*() improvements" from David Hildenbrand provides
   code cleanup in the pagemap code

 - "add persistent huge zero folio support" from Pankaj Raghav provides
   a block layer speedup by optionalls making the
   huge_zero_pagepersistent, instead of releasing it when its refcount
   falls to zero

 - "kho: fixes and cleanups" from Mike Rapoport adds a few touchups to
   the recently added Kexec Handover feature

 - "mm: make mm->flags a bitmap and 64-bit on all arches" from Lorenzo
   Stoakes turns mm_struct.flags into a bitmap. To end the constant
   struggle with space shortage on 32-bit conflicting with 64-bit's
   needs

 - "mm/swapfile.c and swap.h cleanup" from Chris Li cleans up some swap
   code

 - "selftests/mm: Fix false positives and skip unsupported tests" from
   Donet Tom fixes a few things in our selftests code

 - "prctl: extend PR_SET_THP_DISABLE to only provide THPs when advised"
   from David Hildenbrand "allows individual processes to opt-out of
   THP=always into THP=madvise, without affecting other workloads on the
   system".

   It's a long story - the [1/N] changelog spells out the considerations

 - "Add and use memdesc_flags_t" from Matthew Wilcox gets us started on
   the memdesc project. Please see

      https://kernelnewbies.org/MatthewWilcox/Memdescs and
      https://blogs.oracle.com/linux/post/introducing-memdesc

 - "Tiny optimization for large read operations" from Chi Zhiling
   improves the efficiency of the pagecache read path

 - "Better split_huge_page_test result check" from Zi Yan improves our
   folio splitting selftest code

 - "test that rmap behaves as expected" from Wei Yang adds some rmap
   selftests

 - "remove write_cache_pages()" from Christoph Hellwig removes that
   function and converts its two remaining callers

 - "selftests/mm: uffd-stress fixes" from Dev Jain fixes some UFFD
   selftests issues

 - "introduce kernel file mapped folios" from Boris Burkov introduces
   the concept of "kernel file pages". Using these permits btrfs to
   account its metadata pages to the root cgroup, rather than to the
   cgroups of random inappropriate tasks

 - "mm/pageblock: improve readability of some pageblock handling" from
   Wei Yang provides some readability improvements to the page allocator
   code

 - "mm/damon: support ARM32 with LPAE" from SeongJae Park teaches DAMON
   to understand arm32 highmem

 - "tools: testing: Use existing atomic.h for vma/maple tests" from
   Brendan Jackman performs some code cleanups and deduplication under
   tools/testing/

 - "maple_tree: Fix testing for 32bit compiles" from Liam Howlett fixes
   a couple of 32-bit issues in tools/testing/radix-tree.c

 - "kasan: unify kasan_enabled() and remove arch-specific
   implementations" from Sabyrzhan Tasbolatov moves KASAN arch-specific
   initialization code into a common arch-neutral implementation

 - "mm: remove zpool" from Johannes Weiner removes zspool - an
   indirection layer which now only redirects to a single thing
   (zsmalloc)

 - "mm: task_stack: Stack handling cleanups" from Pasha Tatashin makes a
   couple of cleanups in the fork code

 - "mm: remove nth_page()" from David Hildenbrand makes rather a lot of
   adjustments at various nth_page() callsites, eventually permitting
   the removal of that undesirable helper function

 - "introduce kasan.write_only option in hw-tags" from Yeoreum Yun
   creates a KASAN read-only mode for ARM, using that architecture's
   memory tagging feature. It is felt that a read-only mode KASAN is
   suitable for use in production systems rather than debug-only

 - "mm: hugetlb: cleanup hugetlb folio allocation" from Kefeng Wang does
   some tidying in the hugetlb folio allocation code

 - "mm: establish const-correctness for pointer parameters" from Max
   Kellermann makes quite a number of the MM API functions more accurate
   about the constness of their arguments. This was getting in the way
   of subsystems (in this case CEPH) when they attempt to improving
   their own const/non-const accuracy

 - "Cleanup free_pages() misuse" from Vishal Moola fixes a number of
   code sites which were confused over when to use free_pages() vs
   __free_pages()

 - "Add Rust abstraction for Maple Trees" from Alice Ryhl makes the
   mapletree code accessible to Rust. Required by nouveau and by its
   forthcoming successor: the new Rust Nova driver

 - "selftests/mm: split_huge_page_test: split_pte_mapped_thp
   improvements" from David Hildenbrand adds a fix and some cleanups to
   the thp selftesting code

 - "mm, swap: introduce swap table as swap cache (phase I)" from Chris
   Li and Kairui Song is the first step along the path to implementing
   "swap tables" - a new approach to swap allocation and state tracking
   which is expected to yield speed and space improvements. This
   patchset itself yields a 5-20% performance benefit in some situations

 - "Some ptdesc cleanups" from Matthew Wilcox utilizes the new memdesc
   layer to clean up the ptdesc code a little

 - "Fix va_high_addr_switch.sh test failure" from Chunyu Hu fixes some
   issues in our 5-level pagetable selftesting code

 - "Minor fixes for memory allocation profiling" from Suren Baghdasaryan
   addresses a couple of minor issues in relatively new memory
   allocation profiling feature

 - "Small cleanups" from Matthew Wilcox has a few cleanups in
   preparation for more memdesc work

 - "mm/damon: add addr_unit for DAMON_LRU_SORT and DAMON_RECLAIM" from
   Quanmin Yan makes some changes to DAMON in furtherance of supporting
   arm highmem

 - "selftests/mm: Add -Wunreachable-code and fix warnings" from Muhammad
   Anjum adds that compiler check to selftests code and fixes the
   fallout, by removing dead code

 - "Improvements to Victim Process Thawing and OOM Reaper Traversal
   Order" from zhongjinji makes a number of improvements in the OOM
   killer: mainly thawing a more appropriate group of victim threads so
   they can release resources

 - "mm/damon: misc fixups and improvements for 6.18" from SeongJae Park
   is a bunch of small and unrelated fixups for DAMON

 - "mm/damon: define and use DAMON initialization check function" from
   SeongJae Park implement reliability and maintainability improvements
   to a recently-added bug fix

 - "mm/damon/stat: expose auto-tuned intervals and non-idle ages" from
   SeongJae Park provides additional transparency to userspace clients
   of the DAMON_STAT information

 - "Expand scope of khugepaged anonymous collapse" from Dev Jain removes
   some constraints on khubepaged's collapsing of anon VMAs. It also
   increases the success rate of MADV_COLLAPSE against an anon vma

 - "mm: do not assume file == vma->vm_file in compat_vma_mmap_prepare()"
   from Lorenzo Stoakes moves us further towards removal of
   file_operations.mmap(). This patchset concentrates upon clearing up
   the treatment of stacked filesystems

 - "mm: Improve mlock tracking for large folios" from Kiryl Shutsemau
   provides some fixes and improvements to mlock's tracking of large
   folios. /proc/meminfo's "Mlocked" field became more accurate

 - "mm/ksm: Fix incorrect accounting of KSM counters during fork" from
   Donet Tom fixes several user-visible KSM stats inaccuracies across
   forks and adds selftest code to verify these counters

 - "mm_slot: fix the usage of mm_slot_entry" from Wei Yang addresses
   some potential but presently benign issues in KSM's mm_slot handling

* tag 'mm-stable-2025-10-01-19-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (372 commits)
  mm: swap: check for stable address space before operating on the VMA
  mm: convert folio_page() back to a macro
  mm/khugepaged: use start_addr/addr for improved readability
  hugetlbfs: skip VMAs without shareable locks in hugetlb_vmdelete_list
  alloc_tag: fix boot failure due to NULL pointer dereference
  mm: silence data-race in update_hiwater_rss
  mm/memory-failure: don't select MEMORY_ISOLATION
  mm/khugepaged: remove definition of struct khugepaged_mm_slot
  mm/ksm: get mm_slot by mm_slot_entry() when slot is !NULL
  hugetlb: increase number of reserving hugepages via cmdline
  selftests/mm: add fork inheritance test for ksm_merging_pages counter
  mm/ksm: fix incorrect KSM counter handling in mm_struct during fork
  drivers/base/node: fix double free in register_one_node()
  mm: remove PMD alignment constraint in execmem_vmalloc()
  mm/memory_hotplug: fix typo 'esecially' -> 'especially'
  mm/rmap: improve mlock tracking for large folios
  mm/filemap: map entire large folio faultaround
  mm/fault: try to map the entire file folio in finish_fault()
  mm/rmap: mlock large folios in try_to_unmap_one()
  mm/rmap: fix a mlock race condition in folio_referenced_one()
  ...
2025-10-02 18:18:33 -07:00
Linus Torvalds
58809f614e drm next for 6.18-rc1
cross-subsystem:
 - i2c-hid: Make elan touch controllers power on after panel is enabled
 - dt bindings for STM32MP25 SoC
 - pci vgaarb: use screen_info helpers
 - rust pin-init updates
 - add MEI driver for late binding firmware update/load
 
 uapi:
 - add ioctl for reassigning GEM handles
 - provide boot_display attribute on boot-up devices
 
 core:
 - document DRM_MODE_PAGE_FLIP_EVENT
 - add vendor specific recovery method to drm device wedged uevent
 
 gem:
 - Simplify gpuvm locking
 
 ttm:
 - add interface to populate buffers
 
 sched:
 - Fix race condition in trace code
 
 atomic:
 - Reallow no-op async page flips
 
 display:
 - dp: Fix command length
 
 video:
 - Improve pixel-format handling for struct screen_info
 
 rust:
 - drop Opaque<> from ioctl args
 - Alloc:
 - BorrowedPage type and AsPageIter traits
 - Implement Vmalloc::to_page() and VmallocPageIter
 - DMA/Scatterlist:
 - Add dma::DataDirection and type alias for dma_addr_t
 - Abstraction for struct scatterlist and sg_table
 - DRM:
 - simplify use of generics
 - add DriverFile type alias
 - drop Object::SIZE
 - Rust:
 - pin-init tree merge
 - Various methods for AsBytes and FromBytes traits
 
 gpuvm:
 - Support madvice in Xe driver
 
 gpusvm:
 - fix hmm_pfn_to_map_order usage in gpusvm
 
 bridge:
 - Improve and fix ref counting on bridge management
 - cdns-dsi: Various improvements to mode setting
 - Support Solomon SSD2825 plus DT bindings
 - Support Waveshare DSI2DPI plus DT bindings
 - Support Content Protection property
 - display-connector: Improve DP display detection
 - Add support for Radxa Ra620 plus DT bindings
 - adv7511: Provide SPD and HDMI infoframes
 - it6505: Replace crypto_shash with sha()
 - synopsys: Add support for DW DPTX Controller plus DT bindings
 - adv7511: Write full Audio infoframe
 - ite6263: Support vendor-specific infoframes
 - simple: Add support for Realtek RTD2171 DP-to-HDMI plus DT bindings
 
 panel:
 - panel-edp: Support mt8189 Chromebooks; Support BOE NV140WUM-N64;
   Support SHP LQ134Z1; Fixes
 - panel-simple: Support Olimex LCD-OLinuXino-5CTS plus DT bindings
 - Support Samsung AMS561RA01
 - Support Hydis HV101HD1 plus DT bindings
 - ilitek-ili9881c: Refactor mode setting; Add support for Bestar
   BSD1218-A101KL68 LCD plus DT bindings
 - lvds: Add support for Ampire AMP19201200B5TZQW-T03 to DT bindings
 - edp: Add support for additonal mt8189 Chromebook panels
 - lvds: Add DT bindings for EDT ETML0700Z8DHA
 
 amdgpu:
 - add CRIU support for gem objects
 - RAS updates
 - VCN SRAM load fixes
 - EDID read fixes
 - eDP ALPM support
 - Documentation updates
 - Rework PTE flag generation
 - DCE6 fixes
 - VCN devcoredump cleanup
 - MMHUB client id fixes
 - VCN 5.0.1 RAS support
 - SMU 13.0.x updates
 - Expanded PCIe DPC support
 - Expanded VCN reset support
 - VPE per queue reset support
 - give kernel jobs unique id for tracing
 - pre-populate exported buffers
 - cyan skillfish updates
 - make vbios build number available in sysfs
 - userq updates
 - HDCP updates
 - support MMIO remap page as ttm pool
 - JPEG parser updates
 - DCE6 DC updates
 - use devm for i2c buses
 - GPUVM locking updates
 - Drop non-DC DCE11 code
 - improve fallback handling for pixel encoding
 
 amdkfd:
 - SVM/page migration fixes
 - debugfs fixes
 - add CRIO support for gem objects
 - SVM updates
 
 radeon:
 - use dev_warn_once in CS parsers
 
 xe:
 - add madvise interface
 - add DRM_IOCTL_XE_VM_QUERY_MEMORY_RANGE_ATTRS to query VMA count
   and memory attributes
 - drop L# bank mask reporting from media GT3 on Xe3+.
 - add SLPC power_profile sysfs interface
 - add configs attribs to add post/mid context-switch commands
 - handle firmware reported hardware errors notifying userspace with
   device wedged uevent
 - use same dir structure across sysfs/debugfs
 - cleanup and future proof vram region init
 - add G-states and PCI link states to debugfs
 - Add SRIOV support for CCS surfaces on Xe2+
 - Enable SRIOV PF mode by default on supported platforms
 - move flush to common code
 - extended core workarounds for Xe2/3
 - use DRM scheduler for delayed GT TLB invalidations
 - configs improvements and allow VF device enablement
 - prep work to expose mmio regions to userspace
 - VF migration support added
 - prepare GPU SVM for THP migration
 - start fixing XE_PAGE_SIZE vs PAGE_SIZE
 - add PSMI support for hw validation
 - resize VF bars to max possible size according to number of VFs
 - Ensure GT is in C0 during resume
 - pre-populate exported buffers
 - replace xe_hmm with gpusvm
 - add more SVM GT stats to debugfs
 - improve fake pci and WA kunnit handle for new platform testing
 - Test GuC to GuC comms to add debugging
 - use attribute groups to simplify sysfs registration
 - add Late Binding firmware code to interact with MEI
 
 i915:
 - apply multiple JSL/EHL/Gen7/Gen6 workarounds properly
 - protect against overflow in active_engine()
 - Use try_cmpxchg64() in __active_lookup()
 - include GuC registers in error state
 - get rid of dev->struct_mutex
 - iopoll: generalize read_poll_timout
 - lots more display refactoring
 - Reject HBR3 in any eDP Panel
 - Prune modes for YUV420
 - Display Wa fix, additions, and updates
 - DP: Fix 2.7 Gbps link training on g4x
 - DP: Adjust the idle pattern handling
 - DP: Shuffle the link training code a bit
 - Don't set/read the DSI C clock divider on GLK
 - Enable_psr kernel parameter changes
 - Type-C enabled/disconnected dp-alt sink
 - Wildcat Lake enabling
 - DP HDR updates
 - DRAM detection
 - wait PSR idle on dsb commit
 - Remove FBC modulo 4 restriction for ADL-P+
 - panic: refactor framebuffer allocation
 
 habanalabs:
 - debug/visibility improvements
 - vmalloc-backed coherent mmap support
 - HLDIO infrastructure
 
 nova-core:
 - various register!() macro improvements
 - minor vbios/firmware fixes/refactoring
 - advance firmware boot stages; process Booter and patch signatures
 - process GSP and GSP bootloader
 - Add r570.144 firmware bindings and update to it
 - Move GSP boot code to own module
 - Use new pin-init features to store driver's private data in a single
  allocation
 - Update ARef import from sync::aref
 
 nova-drm:
 - Update ARef import from sync::aref
 
 tyr:
 - initial driver skeleton for a rust driver for ARM Mali GPUs
 - capable of powering up, query metadata and provide it to userspace.
 
 msm:
 - GPU and Core:
 - in DT bindings describe clocks per GPU type
 - GMU bandwidth voting for x1-85
 - a623/a663 speedbins
 - cleanup some remaining no-iommu leftovers after VM_BIND conversion
 - fix GEM obj 32b size truncation
 - add missing VM_BIND param validation
 - IFPC for x1-85 and a750
 - register xml and gen_header.py sync from mesa
 - Display:
 - add missing bindings for display on SC8180X
 - added DisplayPort MST bindings
 - conversion from round_rate() to determine_rate()
 
 amdxdna:
 - add IOCTL_AMDXDNA_GET_ARRAY
 - support user space allocated buffers
 - streamline PM interfaces
 - Refactoring wrt. hardware contexts
 - improve error reporting
 
 nouveau:
 - use GSP firmware by default
 - improve error reporting
 - Pre-populate exported buffers
 
 ast:
 - Clean up detection of DRAM config
 
 exynos:
 - add DSIM bridge driver support for Exynos7870
 - Document Exynos7870 DSIM compatible in dt-binding
 
 panthor:
 - Print task/pid on errors
 - Add support for Mali G710, G510, G310, Gx15, Gx20, Gx25
 - Improve cache flushing
 - Fail VM bind if BO has offset
 
 renesas:
 - convert to RUNTIME_PM_OPS
 
 rcar-du:
 - Make number of lanes configurable
 - Use RUNTIME_PM_OPS
 - Add support for DSI commands
 
 rocket:
 - Add driver for Rockchip NPU plus DT bindings
 - Use kfree() and sizeof() correctly
 - Test DMA status
 
 rockchip:
 - dsi2: Add support for RK3576 plus DT bindings
 - Add support for RK3588 DPTX output
 
 tidss:
 - Use crtc_ fields for programming display mode
 - Remove other drivers from aperture
 
 pixpaper:
 - Add support for Mayqueen Pixpaper plus DT bindings
 
 v3d:
 - Support querying nubmer of GPU resets for KHR_robustness
 
 stm:
 - Clean up logging
 - ltdc: Add support support for STM32MP257F-EV1 plus DT bindings
 
 sitronix:
 - st7571-i2c: Add support for inverted displays and 2-bit grayscale
 
 tidss:
 - Convert to kernel's FIELD_ macros
 
 vesadrm:
 - Support 8-bit palette mode
 
 imagination:
 - Improve power management
 - Add support for TH1520 GPU
 - Support Risc-V architectures
 
 v3d:
 - Improve job management and locking
 
 vkms:
 - Support variants of ARGB8888, ARGB16161616, RGB565, RGB888 and P01x
 - Spport YUV with 16-bit components
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Merge tag 'drm-next-2025-10-01' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "cross-subsystem:
   - i2c-hid: Make elan touch controllers power on after panel is
     enabled
   - dt bindings for STM32MP25 SoC
   - pci vgaarb: use screen_info helpers
   - rust pin-init updates
   - add MEI driver for late binding firmware update/load

  uapi:
   - add ioctl for reassigning GEM handles
   - provide boot_display attribute on boot-up devices

  core:
   - document DRM_MODE_PAGE_FLIP_EVENT
   - add vendor specific recovery method to drm device wedged uevent

  gem:
   - Simplify gpuvm locking

  ttm:
   - add interface to populate buffers

  sched:
   - Fix race condition in trace code

  atomic:
   - Reallow no-op async page flips

  display:
   - dp: Fix command length

  video:
   - Improve pixel-format handling for struct screen_info

  rust:
   - drop Opaque<> from ioctl args
   - Alloc:
       - BorrowedPage type and AsPageIter traits
       - Implement Vmalloc::to_page() and VmallocPageIter
   - DMA/Scatterlist:
       - Add dma::DataDirection and type alias for dma_addr_t
       - Abstraction for struct scatterlist and sg_table
   - DRM:
       - simplify use of generics
       - add DriverFile type alias
       - drop Object::SIZE
   - Rust:
       - pin-init tree merge
       - Various methods for AsBytes and FromBytes traits

  gpuvm:
   - Support madvice in Xe driver

  gpusvm:
   - fix hmm_pfn_to_map_order usage in gpusvm

  bridge:
   - Improve and fix ref counting on bridge management
   - cdns-dsi: Various improvements to mode setting
   - Support Solomon SSD2825 plus DT bindings
   - Support Waveshare DSI2DPI plus DT bindings
   - Support Content Protection property
   - display-connector: Improve DP display detection
   - Add support for Radxa Ra620 plus DT bindings
   - adv7511: Provide SPD and HDMI infoframes
   - it6505: Replace crypto_shash with sha()
   - synopsys: Add support for DW DPTX Controller plus DT bindings
   - adv7511: Write full Audio infoframe
   - ite6263: Support vendor-specific infoframes
   - simple: Add support for Realtek RTD2171 DP-to-HDMI plus DT bindings

  panel:
   - panel-edp: Support mt8189 Chromebooks; Support BOE NV140WUM-N64;
     Support SHP LQ134Z1; Fixes
   - panel-simple: Support Olimex LCD-OLinuXino-5CTS plus DT bindings
   - Support Samsung AMS561RA01
   - Support Hydis HV101HD1 plus DT bindings
   - ilitek-ili9881c: Refactor mode setting; Add support for Bestar
     BSD1218-A101KL68 LCD plus DT bindings
   - lvds: Add support for Ampire AMP19201200B5TZQW-T03 to DT bindings
   - edp: Add support for additonal mt8189 Chromebook panels
   - lvds: Add DT bindings for EDT ETML0700Z8DHA

  amdgpu:
   - add CRIU support for gem objects
   - RAS updates
   - VCN SRAM load fixes
   - EDID read fixes
   - eDP ALPM support
   - Documentation updates
   - Rework PTE flag generation
   - DCE6 fixes
   - VCN devcoredump cleanup
   - MMHUB client id fixes
   - VCN 5.0.1 RAS support
   - SMU 13.0.x updates
   - Expanded PCIe DPC support
   - Expanded VCN reset support
   - VPE per queue reset support
   - give kernel jobs unique id for tracing
   - pre-populate exported buffers
   - cyan skillfish updates
   - make vbios build number available in sysfs
   - userq updates
   - HDCP updates
   - support MMIO remap page as ttm pool
   - JPEG parser updates
   - DCE6 DC updates
   - use devm for i2c buses
   - GPUVM locking updates
   - Drop non-DC DCE11 code
   - improve fallback handling for pixel encoding

  amdkfd:
   - SVM/page migration fixes
   - debugfs fixes
   - add CRIO support for gem objects
   - SVM updates

  radeon:
   - use dev_warn_once in CS parsers

  xe:
   - add madvise interface
   - add DRM_IOCTL_XE_VM_QUERY_MEMORY_RANGE_ATTRS to query VMA count
     and memory attributes
   - drop L# bank mask reporting from media GT3 on Xe3+.
   - add SLPC power_profile sysfs interface
   - add configs attribs to add post/mid context-switch commands
   - handle firmware reported hardware errors notifying userspace with
     device wedged uevent
   - use same dir structure across sysfs/debugfs
   - cleanup and future proof vram region init
   - add G-states and PCI link states to debugfs
   - Add SRIOV support for CCS surfaces on Xe2+
   - Enable SRIOV PF mode by default on supported platforms
   - move flush to common code
   - extended core workarounds for Xe2/3
   - use DRM scheduler for delayed GT TLB invalidations
   - configs improvements and allow VF device enablement
   - prep work to expose mmio regions to userspace
   - VF migration support added
   - prepare GPU SVM for THP migration
   - start fixing XE_PAGE_SIZE vs PAGE_SIZE
   - add PSMI support for hw validation
   - resize VF bars to max possible size according to number of VFs
   - Ensure GT is in C0 during resume
   - pre-populate exported buffers
   - replace xe_hmm with gpusvm
   - add more SVM GT stats to debugfs
   - improve fake pci and WA kunnit handle for new platform testing
   - Test GuC to GuC comms to add debugging
   - use attribute groups to simplify sysfs registration
   - add Late Binding firmware code to interact with MEI

  i915:
   - apply multiple JSL/EHL/Gen7/Gen6 workarounds properly
   - protect against overflow in active_engine()
   - Use try_cmpxchg64() in __active_lookup()
   - include GuC registers in error state
   - get rid of dev->struct_mutex
   - iopoll: generalize read_poll_timout
   - lots more display refactoring
   - Reject HBR3 in any eDP Panel
   - Prune modes for YUV420
   - Display Wa fix, additions, and updates
   - DP: Fix 2.7 Gbps link training on g4x
   - DP: Adjust the idle pattern handling
   - DP: Shuffle the link training code a bit
   - Don't set/read the DSI C clock divider on GLK
   - Enable_psr kernel parameter changes
   - Type-C enabled/disconnected dp-alt sink
   - Wildcat Lake enabling
   - DP HDR updates
   - DRAM detection
   - wait PSR idle on dsb commit
   - Remove FBC modulo 4 restriction for ADL-P+
   - panic: refactor framebuffer allocation

  habanalabs:
   - debug/visibility improvements
   - vmalloc-backed coherent mmap support
   - HLDIO infrastructure

  nova-core:
   - various register!() macro improvements
   - minor vbios/firmware fixes/refactoring
   - advance firmware boot stages; process Booter and patch signatures
   - process GSP and GSP bootloader
   - Add r570.144 firmware bindings and update to it
   - Move GSP boot code to own module
   - Use new pin-init features to store driver's private data in a
     single allocation
   - Update ARef import from sync::aref

  nova-drm:
   - Update ARef import from sync::aref

  tyr:
   - initial driver skeleton for a rust driver for ARM Mali GPUs
   - capable of powering up, query metadata and provide it to userspace.

  msm:
   - GPU and Core:
      - in DT bindings describe clocks per GPU type
      - GMU bandwidth voting for x1-85
      - a623/a663 speedbins
      - cleanup some remaining no-iommu leftovers after VM_BIND conversion
      - fix GEM obj 32b size truncation
      - add missing VM_BIND param validation
      - IFPC for x1-85 and a750
      - register xml and gen_header.py sync from mesa
   - Display:
      - add missing bindings for display on SC8180X
      - added DisplayPort MST bindings
      - conversion from round_rate() to determine_rate()

  amdxdna:
   - add IOCTL_AMDXDNA_GET_ARRAY
   - support user space allocated buffers
   - streamline PM interfaces
   - Refactoring wrt. hardware contexts
   - improve error reporting

  nouveau:
   - use GSP firmware by default
   - improve error reporting
   - Pre-populate exported buffers

  ast:
   - Clean up detection of DRAM config

  exynos:
   - add DSIM bridge driver support for Exynos7870
   - Document Exynos7870 DSIM compatible in dt-binding

  panthor:
   - Print task/pid on errors
   - Add support for Mali G710, G510, G310, Gx15, Gx20, Gx25
   - Improve cache flushing
   - Fail VM bind if BO has offset

  renesas:
   - convert to RUNTIME_PM_OPS

  rcar-du:
   - Make number of lanes configurable
   - Use RUNTIME_PM_OPS
   - Add support for DSI commands

  rocket:
   - Add driver for Rockchip NPU plus DT bindings
   - Use kfree() and sizeof() correctly
   - Test DMA status

  rockchip:
   - dsi2: Add support for RK3576 plus DT bindings
   - Add support for RK3588 DPTX output

  tidss:
   - Use crtc_ fields for programming display mode
   - Remove other drivers from aperture

  pixpaper:
   - Add support for Mayqueen Pixpaper plus DT bindings

  v3d:
   - Support querying nubmer of GPU resets for KHR_robustness

  stm:
   - Clean up logging
   - ltdc: Add support support for STM32MP257F-EV1 plus DT bindings

  sitronix:
   - st7571-i2c: Add support for inverted displays and 2-bit grayscale

  tidss:
   - Convert to kernel's FIELD_ macros

  vesadrm:
   - Support 8-bit palette mode

  imagination:
   - Improve power management
   - Add support for TH1520 GPU
   - Support Risc-V architectures

  v3d:
   - Improve job management and locking

  vkms:
   - Support variants of ARGB8888, ARGB16161616, RGB565, RGB888 and P01x
   - Spport YUV with 16-bit components"

* tag 'drm-next-2025-10-01' of https://gitlab.freedesktop.org/drm/kernel: (1455 commits)
  drm/amd: Add name to modes from amdgpu_connector_add_common_modes()
  drm/amd: Drop some common modes from amdgpu_connector_add_common_modes()
  drm/amdgpu: update MODULE_PARM_DESC for freesync_video
  drm/amd: Use dynamic array size declaration for amdgpu_connector_add_common_modes()
  drm/amd/display: Share dce100_validate_global with DCE6-8
  drm/amd/display: Share dce100_validate_bandwidth with DCE6-8
  drm/amdgpu: Fix fence signaling race condition in userqueue
  amd/amdkfd: enhance kfd process check in switch partition
  amd/amdkfd: resolve a race in amdgpu_amdkfd_device_fini_sw
  drm/amd/display: Reject modes with too high pixel clock on DCE6-10
  drm/amd: Drop unnecessary check in amdgpu_connector_add_common_modes()
  drm/amd/display: Only enable common modes for eDP and LVDS
  drm/amdgpu: remove the redeclaration of variable i
  drm/amdgpu/userq: assign an error code for invalid userq va
  drm/amdgpu: revert "rework reserved VMID handling" v2
  drm/amdgpu: remove leftover from enforcing isolation by VMID
  drm/amdgpu: Add fallback to pipe reset if KCQ ring reset fails
  accel/habanalabs: add Infineon version check
  accel/habanalabs/gaudi2: read preboot status after recovering from dirty state
  accel/habanalabs: add HL_GET_P_STATE passthrough type
  ...
2025-10-02 12:47:25 -07:00
Linus Torvalds
77633c77ee bitmap-for-6.18
Bits-related paches for 6.17:
  - FIELD_PREP_WM16() consolidation (Nicolas);
  - bitmaps for Rust (Burak);
  - __fls() fix for arc (Kees).
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Merge tag 'bitmap-for-6.18' of https://github.com/norov/linux

Pull bitmap updates from Yury Norov:

 - FIELD_PREP_WM16() consolidation (Nicolas)

 - bitmaps for Rust (Burak)

 - __fls() fix for arc (Kees)

* tag 'bitmap-for-6.18' of https://github.com/norov/linux: (25 commits)
  rust: add dynamic ID pool abstraction for bitmap
  rust: add find_bit_benchmark_rust module.
  rust: add bitmap API.
  rust: add bindings for bitops.h
  rust: add bindings for bitmap.h
  phy: rockchip-pcie: switch to FIELD_PREP_WM16 macro
  clk: sp7021: switch to FIELD_PREP_WM16 macro
  PCI: dw-rockchip: Switch to FIELD_PREP_WM16 macro
  PCI: rockchip: Switch to FIELD_PREP_WM16* macros
  net: stmmac: dwmac-rk: switch to FIELD_PREP_WM16 macro
  ASoC: rockchip: i2s-tdm: switch to FIELD_PREP_WM16_CONST macro
  drm/rockchip: dw_hdmi: switch to FIELD_PREP_WM16* macros
  phy: rockchip-usb: switch to FIELD_PREP_WM16 macro
  drm/rockchip: inno-hdmi: switch to FIELD_PREP_WM16 macro
  drm/rockchip: dw_hdmi_qp: switch to FIELD_PREP_WM16 macro
  phy: rockchip-samsung-dcphy: switch to FIELD_PREP_WM16 macro
  drm/rockchip: vop2: switch to FIELD_PREP_WM16 macro
  drm/rockchip: dsi: switch to FIELD_PREP_WM16* macros
  phy: rockchip-emmc: switch to FIELD_PREP_WM16 macro
  drm/rockchip: lvds: switch to FIELD_PREP_WM16 macro
  ...
2025-10-02 08:57:03 -07:00
Linus Torvalds
ad6657804c regulator: Updates for v6.18
This is a very quiet release for regulator, almost all the changes are
 new drivers but we do also have some improvements for the Rust bindings.
 
  - Additional APIs added to the Rust bindings.
  - Support for Maxim MAX77838, NXP PF0900 and PF5300, Richtek RT5133 and
    SpacemiT P1.
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Merge tag 'regulator-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "This is a very quiet release for regulator, almost all the changes are
  new drivers but we do also have some improvements for the Rust
  bindings.

   - Additional APIs added to the Rust bindings

   - Support for Maxim MAX77838, NXP PF0900 and PF5300, Richtek RT5133
     and SpacemiT P1"

* tag 'regulator-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (28 commits)
  regulator: dt-bindings: qcom,sdm845-refgen-regulator: document more platforms
  regulator: Fix MAX77838 selection
  regulator: spacemit: support SpacemiT P1 regulators
  regulator: max77838: add max77838 regulator driver
  dt-bindings: regulator: document max77838 pmic
  rust: regulator: add devm_enable and devm_enable_optional
  rust: regulator: remove Regulator<Dynamic>
  regulator: dt-bindings: rpi-panel: Split 7" Raspberry Pi 720x1280 v2 binding
  regulator: pf530x: Add a driver for the NXP PF5300 Regulator
  regulator: dt-bindings: nxp,pf530x: Add NXP PF5300/PF5301/PF5302 PMICs
  regulator: scmi: Use int type to store negative error codes
  regulator: core: Remove redundant ternary operators
  rust: regulator: use `to_result` for error handling
  regulator: consumer.rst: document bulk operations
  regulator: rt5133: Fix IS_ERR() vs NULL bug in rt5133_validate_vendor_info()
  regulator: bd718x7: Use kcalloc() instead of kzalloc()
  regulator: rt5133: Fix spelling mistake "regualtor" -> "regulator"
  regulator: remove unneeded 'fast_io' parameter in regmap_config
  regulator: rt5133: Add RT5133 PMIC regulator Support
  regulator: dt-bindings: Add Richtek RT5133 Support
  ...
2025-10-01 11:43:54 -07:00
Linus Torvalds
eb3289fc47 Driver core changes for 6.18-rc1
- Auxiliary:
    - Drop call to dev_pm_domain_detach() in auxiliary_bus_probe()
    - Optimize logic of auxiliary_match_id()
 
 - Rust:
   - Auxiliary:
     - Use primitive C types from prelude
 
   - DebugFs:
     - Add debugfs support for simple read/write files and custom callbacks
       through a File-type-based and directory-scope-based API
     - Sample driver code for the File-type-based API
     - Sample module code for the directory-scope-based API
 
   - I/O:
     - Add io::poll module and implement Rust specific read_poll_timeout()
       helper
 
   - IRQ:
     - Implement support for threaded and non-threaded device IRQs based on
       (&Device<Bound>, IRQ number) tuples (IrqRequest)
     - Provide &Device<Bound> cookie in IRQ handlers
 
   - PCI:
     - Support IRQ requests from IRQ vectors for a specific pci::Device<Bound>
     - Implement accessors for subsystem IDs, revision, devid and resource start
     - Provide dedicated pci::Vendor and pci::Class types for vendor and class
       ID numbers
     - Implement Display to print actual vendor and class names; Debug to print
       the raw ID numbers
     - Add pci::DeviceId::from_class_and_vendor() helper
     - Use primitive C types from prelude
     - Various minor inline and (safety) comment improvements
 
   - Platform:
     - Support IRQ requests from IRQ vectors for a specific
       platform::Device<Bound>
 
   - Nova:
     - Use pci::DeviceId::from_class_and_vendor() to avoid probing
       non-display/compute PCI functions
 
   - Misc:
     - Add helper for cpu_relax()
     - Update ARef import from sync::aref
 
 - sysfs:
   - Remove bin_attrs_new field from struct attribute_group
   - Remove read_new() and write_new() from struct bin_attribute
 
 - Misc:
   - Document potential race condition in get_dev_from_fwnode()
   - Constify node_group argument in software node registration functions
   - Fix order of kernel-doc parameters in various functions
   - Set power.no_pm flag for faux devices
   - Set power.no_callbacks flag along with the power.no_pm flag
   - Constify the pmu_bus bus type
   - Minor spelling fixes
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Merge tag 'driver-core-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core

Pull driver core updates from Danilo Krummrich:
 "Auxiliary:
   - Drop call to dev_pm_domain_detach() in auxiliary_bus_probe()
   - Optimize logic of auxiliary_match_id()

  Rust:
   - Auxiliary:
      - Use primitive C types from prelude

   - DebugFs:
      - Add debugfs support for simple read/write files and custom
        callbacks through a File-type-based and directory-scope-based
        API
      - Sample driver code for the File-type-based API
      - Sample module code for the directory-scope-based API

   - I/O:
      - Add io::poll module and implement Rust specific
        read_poll_timeout() helper

   - IRQ:
      - Implement support for threaded and non-threaded device IRQs
        based on (&Device<Bound>, IRQ number) tuples (IrqRequest)
      - Provide &Device<Bound> cookie in IRQ handlers

   - PCI:
      - Support IRQ requests from IRQ vectors for a specific
        pci::Device<Bound>
      - Implement accessors for subsystem IDs, revision, devid and
        resource start
      - Provide dedicated pci::Vendor and pci::Class types for vendor
        and class ID numbers
      - Implement Display to print actual vendor and class names; Debug
        to print the raw ID numbers
      - Add pci::DeviceId::from_class_and_vendor() helper
      - Use primitive C types from prelude
      - Various minor inline and (safety) comment improvements

   - Platform:
      - Support IRQ requests from IRQ vectors for a specific
        platform::Device<Bound>

   - Nova:
      - Use pci::DeviceId::from_class_and_vendor() to avoid probing
        non-display/compute PCI functions

   - Misc:
      - Add helper for cpu_relax()
      - Update ARef import from sync::aref

  sysfs:
   - Remove bin_attrs_new field from struct attribute_group
   - Remove read_new() and write_new() from struct bin_attribute

  Misc:
   - Document potential race condition in get_dev_from_fwnode()
   - Constify node_group argument in software node registration
     functions
   - Fix order of kernel-doc parameters in various functions
   - Set power.no_pm flag for faux devices
   - Set power.no_callbacks flag along with the power.no_pm flag
   - Constify the pmu_bus bus type
   - Minor spelling fixes"

* tag 'driver-core-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (43 commits)
  rust: pci: display symbolic PCI vendor names
  rust: pci: display symbolic PCI class names
  rust: pci: fix incorrect platform reference in PCI driver probe doc comment
  rust: pci: fix incorrect platform reference in PCI driver unbind doc comment
  perf: make pmu_bus const
  samples: rust: Add scoped debugfs sample driver
  rust: debugfs: Add support for scoped directories
  samples: rust: Add debugfs sample driver
  rust: debugfs: Add support for callback-based files
  rust: debugfs: Add support for writable files
  rust: debugfs: Add support for read-only files
  rust: debugfs: Add initial support for directories
  driver core: auxiliary bus: Optimize logic of auxiliary_match_id()
  driver core: auxiliary bus: Drop dev_pm_domain_detach() call
  driver core: Fix order of the kernel-doc parameters
  driver core: get_dev_from_fwnode(): document potential race
  drivers: base: fix "publically"->"publicly"
  driver core/PM: Set power.no_callbacks along with power.no_pm
  driver core: faux: Set power.no_pm for faux devices
  rust: pci: inline several tiny functions
  ...
2025-10-01 08:39:23 -07:00