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v6.19-rc2
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816 Commits

Author SHA1 Message Date
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
6dfafbd029 drm-next for 6.19-rc1: 
new driver:
 - Arm Ethos-U65/U85 accel driver
 
 core:
 - support the drm color pipeline in vkms/amdgfx
 - add support for drm colorop pipeline
 - add COLOR PIPELINE plane property
 - add DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE
 - throttle dirty worker with vblank
 - use drm_for_each_bridge_in_chain_scoped in drm's bridge code
 - Ensure drm_client_modeset tests are enabled in UML
 - add simulated vblank interrupt - use in drivers
 - dumb buffer sizing helper
 - move freeing of drm client memory to driver
 - crtc sharpness strength property
 - stop using system_wq in scheduler/drivers
 - support emergency restore in drm-client
 
 rust:
 - make slice::as_flattened usable on all supported rustc
 - add FromBytes::from_bytes_prefix() method
 - remove redundant device ptr from Rust GEM object
 - Change how AlwaysRefCounted is implemented for GEM objects
 
 gpuvm:
 - Add deferred vm_bo cleanup to GPUVM (for rust)
 
 atomic:
 - cleanup and improve state handling interfaces
 
 buddy:
 - optimize block management
 
 dma-buf:
 - heaps: Create heap per CMA reserved location
 - improve userspace documentation
 
 dp:
 - add POST_LT_ADJ_REQ training sequence
 - DPCD dSC quirk for synaptics panamera devices
 - helpers to query branch DSC max throughput
 
 ttm:
 - Rename ttm_bo_put to ttm_bo_fini
 - allow page protection flags on risc-v
 - rework pipelined eviction fence handling
 
 amdgpu:
 - enable amdgpu by default for SI/CI dGPUs
 - enable DC by default on SI
 - refactor CIK/SI enablement
 - add ABM KMS property
 - Re-enable DM idle optimizations
 - DC Analog encoders support
 - Powerplay fixes for fiji/iceland
 - Enable DC on bonaire by default
 - HMM cleanup
 - Add new RAS framework
 - DML2.1 updates
 - YCbCr420 fixes
 - DC FP fixes
 - DMUB fixes
 - LTTPR fixes
 - DTBCLK fixes
 - DMU cursor offload handling
 - Userq validation improvements
 - Unify shutdown callback handling
 - Suspend improvements
 - Power limit code cleanup
 - SR-IOV fixes
 - AUX backlight fixes
 - DCN 3.5 fixes
 - HDMI compliance fixes
 - DCN 4.0.1 cursor updates
 - DCN interrupt fix
 - DC KMS full update improvements
 - Add additional HDCP traces
 - DCN 3.2 fixes
 - DP MST fixes
 - Add support for new SR-IOV mailbox interface
 - UQ reset support
 - HDP flush rework
 - VCE1 support
 
 amdkfd:
 - HMM cleanups
 - Relax checks on save area overallocations
 - Fix GPU mappings after prefetch
 
 radeon:
 - refactor CIK/SI enablement.
 
 xe:
 - Initial Xe3P support
 - panic support on VRAM for display
 - fix stolen size check
 - Loosen used tracking restriction
 - New SR-IOV debugfs structure and debugfs updates
 - Hide the GPU madvise flag behind a VM_BIND flag
 - Always expose VRAM provisioning data on discrete GPUs
 - Allow VRAM mappings for userptr when used with SVM
 - Allow pinning of p2p dma-buf
 - Use per-tile debugfs where appropriate
 - Add documentation for Execution Queues
 - PF improvements
 - VF migration recovery redesign work
 - User / Kernel VRAM partitioning
 - Update Tile-based messages
 - Allow configfs to disable specific GT types
 - VF provisioning and migration improvements
 - use SVM range helpers in PT layer
 - Initial CRI support
 - access VF registers using dedicated MMIO view
 - limit number of jobs per exec queue
 - add sriov_admin sysfs tree
 - more crescent island specific support
 - debugfs residency counter
 - SRIOV migration work
 - runtime registers for GFX 35
 
 i915:
 - add initial Xe3p_LPD display version 35 support
 - Enable LNL+ content adaptive sharpness filter
 - Use optimized VRR guardband
 - Enable Xe3p LT PHY
 - enable FBC support for Xe3p_LPD display
 - add display 30.02 firmware support
 - refactor SKL+ watermark latency setup
 - refactor fbdev handling
 - call i915/xe runtime PM via function pointers
 - refactor i915/xe stolen memory/display interfaces
 - use display version instead of gfx version in display code
 - extend i915_display_info with Type-C port details
 - lots of display cleanups/refactorings
 - set O_LARGEFILE in __create_shmem
 - skuip guc communication warning on reset
 - fix time conversions
 - defeature DRRS on LNL+
 - refactor intel_frontbuffer split between i915/xe/display
 - convert inteL_rom interfaces to struct drm_device
 - unify display register polling interfaces
 - aovid lock inversion when pinning to GGTT on CHV/BXT+VTD
 
 panel:
 - Add KD116N3730A08/A12, chromebook mt8189
 - JT101TM023, LQ079L1SX01,
 - GLD070WX3-SL01 MIPI DSI
 - Samsung LTL106AL0, Samsung LTL106AL01
 - Raystar RFF500F-AWH-DNN
 - Winstar WF70A8SYJHLNGA,
 - Wanchanglong w552946aaa
 - Samsung SOFEF00
 - Lenovo X13s panel.
 - ilitek-ili9881c : add rpi 5" support
 - visionx-rm69299 - add backlight support
 - edp - support AUI B116XAN02.0
 
 bridge:
 - improve ref counting
 - ti-sn65dsi86 - add support for DP mode with HPD
 - synopsis: support CEC, init timer with correct freq
 - ASL CS5263 DP-to-HDMI bridge support
 
 nova-core:
 - introduce bitfield! macro
 - introduce safe integer converters
 - GSP inits to fully booted state on Ampere
 - Use more future-proof register for GPU identification
 
 nova-drm:
 - select NOVA_CORE
 - 64-bit only
 
 nouveau:
 - improve reclocking on tegra 186+
 - add large page and compression support
 
 msm:
 - GPU:
   - Gen8 support: A840 (Kaanapali) and X2-85 (Glymur)
   - A612 support
 - MDSS:
   - Added support for Glymur and QCS8300 platforms
 - DPU:
   - Enabled Quad-Pipe support, unlocking higher resolutions support
   - Added support for Glymur platform
   - Documented DPU on QCS8300 platform as supported
 - DisplayPort:
   - Added support for Glymur platform
   - Added support lame remapping inside DP block
   - Documented DisplayPort controller on QCS8300 and SM6150/QCS615 as
     supported
 
 tegra:
 - NVJPG driver
 
 panfrost:
 - display JM contexts over debugfs
 - export JM contexts to userspace
 - improve error and job handling
 
 panthor:
 - support custom ASN_HASH for mt8196
 - support mali-G1 GPU
 - flush shmem write before mapping buffers uncached
 - make timeout per-queue instead of per-job
 
 mediatek:
 - MT8195/88 HDMIv2/DDCv2 support
 
 rockchip:
 - dsi: add support for RK3368
 
 amdxdna:
 - enhance runtime PM
 - last hardware error reading uapi
 - support firmware debug output
 - add resource and telemetry data uapi
 - preemption support
 
 imx:
 - add driver for HDMI TX Parallel audio interface
 
 ivpu:
 - add support for user-managed preemption buffer
 - add userptr support
 - update JSM firware API to 3.33.0
 - add better alloc/free warnings
 - fix page fault in unbind all bos
 - rework bind/unbind of imported buffers
 - enable MCA ECC signalling
 - split fw runtime and global memory buffers
 - add fdinfo memory statistics
 
 tidss:
 - convert to drm logging
 - logging cleanup
 
 ast:
 - refactor generation init paths
 - add per chip generation detect_tx_chip
 - set quirks for each chip model
 
 atmel-hlcdc:
 - set LCDC_ATTRE register in plane disable
 - set correct values for plane scaler
 
 solomon:
 - use drm helper for get_modes and move_valid
 
 sitronix:
 - fix output position when clearing screens
 
 qaic:
 - support dma-buf exports
 - support new firmware's READ_DATA implementation
 - sahara AIC200 image table update
 - add sysfs support
 - add coredump support
 - add uevents support
 - PM support
 
 sun4i:
 - layer refactors to decouple plane from output
 - improve DE33 support
 
 vc4:
 - switch to generic CEC helpers
 
 komeda:
 - use drm_ logging functions
 
 vkms:
 - configfs support for display configuration
 
 vgem:
 - fix fence timer deadlock
 
 etnaviv:
 - add HWDB entry for GC8000 Nano Ultra VIP r6205
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Merge tag 'drm-next-2025-12-03' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "There was a rather late merge of a new color pipeline feature, that
  some userspace projects are blocked on, and has seen a lot of work in
  amdgpu. This should have seen some time in -next. There is additional
  support for this for Intel, that if it arrives in the next day or two
  I'll pass it on in another pull request and you can decide if you want
  to take it.

  Highlights:
   - Arm Ethos NPU accelerator driver
   - new DRM color pipeline support
   - amdgpu will now run discrete SI/CIK cards instead of radeon, which
     enables vulkan support in userspace
   - msm gets gen8 gpu support
   - initial Xe3P support in xe

  Full detail summary:

  New driver:
   - Arm Ethos-U65/U85 accel driver

  Core:
   - support the drm color pipeline in vkms/amdgfx
   - add support for drm colorop pipeline
   - add COLOR PIPELINE plane property
   - add DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE
   - throttle dirty worker with vblank
   - use drm_for_each_bridge_in_chain_scoped in drm's bridge code
   - Ensure drm_client_modeset tests are enabled in UML
   - add simulated vblank interrupt - use in drivers
   - dumb buffer sizing helper
   - move freeing of drm client memory to driver
   - crtc sharpness strength property
   - stop using system_wq in scheduler/drivers
   - support emergency restore in drm-client

  Rust:
   - make slice::as_flattened usable on all supported rustc
   - add FromBytes::from_bytes_prefix() method
   - remove redundant device ptr from Rust GEM object
   - Change how AlwaysRefCounted is implemented for GEM objects

  gpuvm:
   - Add deferred vm_bo cleanup to GPUVM (for rust)

  atomic:
   - cleanup and improve state handling interfaces

  buddy:
   - optimize block management

  dma-buf:
   - heaps: Create heap per CMA reserved location
   - improve userspace documentation

  dp:
   - add POST_LT_ADJ_REQ training sequence
   - DPCD dSC quirk for synaptics panamera devices
   - helpers to query branch DSC max throughput

  ttm:
   - Rename ttm_bo_put to ttm_bo_fini
   - allow page protection flags on risc-v
   - rework pipelined eviction fence handling

  amdgpu:
   - enable amdgpu by default for SI/CI dGPUs
   - enable DC by default on SI
   - refactor CIK/SI enablement
   - add ABM KMS property
   - Re-enable DM idle optimizations
   - DC Analog encoders support
   - Powerplay fixes for fiji/iceland
   - Enable DC on bonaire by default
   - HMM cleanup
   - Add new RAS framework
   - DML2.1 updates
   - YCbCr420 fixes
   - DC FP fixes
   - DMUB fixes
   - LTTPR fixes
   - DTBCLK fixes
   - DMU cursor offload handling
   - Userq validation improvements
   - Unify shutdown callback handling
   - Suspend improvements
   - Power limit code cleanup
   - SR-IOV fixes
   - AUX backlight fixes
   - DCN 3.5 fixes
   - HDMI compliance fixes
   - DCN 4.0.1 cursor updates
   - DCN interrupt fix
   - DC KMS full update improvements
   - Add additional HDCP traces
   - DCN 3.2 fixes
   - DP MST fixes
   - Add support for new SR-IOV mailbox interface
   - UQ reset support
   - HDP flush rework
   - VCE1 support

  amdkfd:
   - HMM cleanups
   - Relax checks on save area overallocations
   - Fix GPU mappings after prefetch

  radeon:
   - refactor CIK/SI enablement

  xe:
   - Initial Xe3P support
   - panic support on VRAM for display
   - fix stolen size check
   - Loosen used tracking restriction
   - New SR-IOV debugfs structure and debugfs updates
   - Hide the GPU madvise flag behind a VM_BIND flag
   - Always expose VRAM provisioning data on discrete GPUs
   - Allow VRAM mappings for userptr when used with SVM
   - Allow pinning of p2p dma-buf
   - Use per-tile debugfs where appropriate
   - Add documentation for Execution Queues
   - PF improvements
   - VF migration recovery redesign work
   - User / Kernel VRAM partitioning
   - Update Tile-based messages
   - Allow configfs to disable specific GT types
   - VF provisioning and migration improvements
   - use SVM range helpers in PT layer
   - Initial CRI support
   - access VF registers using dedicated MMIO view
   - limit number of jobs per exec queue
   - add sriov_admin sysfs tree
   - more crescent island specific support
   - debugfs residency counter
   - SRIOV migration work
   - runtime registers for GFX 35

  i915:
   - add initial Xe3p_LPD display version 35 support
   - Enable LNL+ content adaptive sharpness filter
   - Use optimized VRR guardband
   - Enable Xe3p LT PHY
   - enable FBC support for Xe3p_LPD display
   - add display 30.02 firmware support
   - refactor SKL+ watermark latency setup
   - refactor fbdev handling
   - call i915/xe runtime PM via function pointers
   - refactor i915/xe stolen memory/display interfaces
   - use display version instead of gfx version in display code
   - extend i915_display_info with Type-C port details
   - lots of display cleanups/refactorings
   - set O_LARGEFILE in __create_shmem
   - skuip guc communication warning on reset
   - fix time conversions
   - defeature DRRS on LNL+
   - refactor intel_frontbuffer split between i915/xe/display
   - convert inteL_rom interfaces to struct drm_device
   - unify display register polling interfaces
   - aovid lock inversion when pinning to GGTT on CHV/BXT+VTD

  panel:
   - Add KD116N3730A08/A12, chromebook mt8189
   - JT101TM023, LQ079L1SX01,
   - GLD070WX3-SL01 MIPI DSI
   - Samsung LTL106AL0, Samsung LTL106AL01
   - Raystar RFF500F-AWH-DNN
   - Winstar WF70A8SYJHLNGA
   - Wanchanglong w552946aaa
   - Samsung SOFEF00
   - Lenovo X13s panel
   - ilitek-ili9881c - add rpi 5" support
   - visionx-rm69299 - add backlight support
   - edp - support AUI B116XAN02.0

  bridge:
   - improve ref counting
   - ti-sn65dsi86 - add support for DP mode with HPD
   - synopsis: support CEC, init timer with correct freq
   - ASL CS5263 DP-to-HDMI bridge support

  nova-core:
   - introduce bitfield! macro
   - introduce safe integer converters
   - GSP inits to fully booted state on Ampere
   - Use more future-proof register for GPU identification

  nova-drm:
   - select NOVA_CORE
   - 64-bit only

  nouveau:
   - improve reclocking on tegra 186+
   - add large page and compression support

  msm:
   - GPU:
      - Gen8 support: A840 (Kaanapali) and X2-85 (Glymur)
      - A612 support
   - MDSS:
      - Added support for Glymur and QCS8300 platforms
   - DPU:
      - Enabled Quad-Pipe support, unlocking higher resolutions support
      - Added support for Glymur platform
      - Documented DPU on QCS8300 platform as supported
   - DisplayPort:
      - Added support for Glymur platform
      - Added support lame remapping inside DP block
      - Documented DisplayPort controller on QCS8300 and SM6150/QCS615
        as supported

  tegra:
   - NVJPG driver

  panfrost:
   - display JM contexts over debugfs
   - export JM contexts to userspace
   - improve error and job handling

  panthor:
   - support custom ASN_HASH for mt8196
   - support mali-G1 GPU
   - flush shmem write before mapping buffers uncached
   - make timeout per-queue instead of per-job

  mediatek:
   - MT8195/88 HDMIv2/DDCv2 support

  rockchip:
   - dsi: add support for RK3368

  amdxdna:
   - enhance runtime PM
   - last hardware error reading uapi
   - support firmware debug output
   - add resource and telemetry data uapi
   - preemption support

  imx:
   - add driver for HDMI TX Parallel audio interface

  ivpu:
   - add support for user-managed preemption buffer
   - add userptr support
   - update JSM firware API to 3.33.0
   - add better alloc/free warnings
   - fix page fault in unbind all bos
   - rework bind/unbind of imported buffers
   - enable MCA ECC signalling
   - split fw runtime and global memory buffers
   - add fdinfo memory statistics

  tidss:
   - convert to drm logging
   - logging cleanup

  ast:
   - refactor generation init paths
   - add per chip generation detect_tx_chip
   - set quirks for each chip model

  atmel-hlcdc:
   - set LCDC_ATTRE register in plane disable
   - set correct values for plane scaler

  solomon:
   - use drm helper for get_modes and move_valid

  sitronix:
   - fix output position when clearing screens

  qaic:
   - support dma-buf exports
   - support new firmware's READ_DATA implementation
   - sahara AIC200 image table update
   - add sysfs support
   - add coredump support
   - add uevents support
   - PM support

  sun4i:
   - layer refactors to decouple plane from output
   - improve DE33 support

  vc4:
   - switch to generic CEC helpers

  komeda:
   - use drm_ logging functions

  vkms:
   - configfs support for display configuration

  vgem:
   - fix fence timer deadlock

  etnaviv:
   - add HWDB entry for GC8000 Nano Ultra VIP r6205"

* tag 'drm-next-2025-12-03' of https://gitlab.freedesktop.org/drm/kernel: (1869 commits)
  Revert "drm/amd: Skip power ungate during suspend for VPE"
  drm/amdgpu: use common defines for HUB faults
  drm/amdgpu/gmc12: add amdgpu_vm_handle_fault() handling
  drm/amdgpu/gmc11: add amdgpu_vm_handle_fault() handling
  drm/amdgpu: use static ids for ACP platform devs
  drm/amdgpu/sdma6: Update SDMA 6.0.3 FW version to include UMQ protected-fence fix
  drm/amdgpu: Forward VMID reservation errors
  drm/amdgpu/gmc8: Delegate VM faults to soft IRQ handler ring
  drm/amdgpu/gmc7: Delegate VM faults to soft IRQ handler ring
  drm/amdgpu/gmc6: Delegate VM faults to soft IRQ handler ring
  drm/amdgpu/gmc6: Cache VM fault info
  drm/amdgpu/gmc6: Don't print MC client as it's unknown
  drm/amdgpu/cz_ih: Enable soft IRQ handler ring
  drm/amdgpu/tonga_ih: Enable soft IRQ handler ring
  drm/amdgpu/iceland_ih: Enable soft IRQ handler ring
  drm/amdgpu/cik_ih: Enable soft IRQ handler ring
  drm/amdgpu/si_ih: Enable soft IRQ handler ring
  drm/amd/display: fix typo in display_mode_core_structs.h
  drm/amd/display: fix Smart Power OLED not working after S4
  drm/amd/display: Move RGB-type check for audio sync to DCE HW sequence
  ...
 2025-12-04 08:53:30 -08:00
Linus Torvalds
d7aa60d966 [GIT PULL for v6.19] media updates 
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Merge tag 'media/v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - New drivers:
    - Mali-C55 ISP
    - Rockchip VICAP (RKCIF)
    - RKVDEC HEVC Decoder
    - Renesas RZV2H IVC
    - Sony IMX111 CMOS sensor driver

 - Removed STi C8SECTPFE Driver

 - Added a V4L2 ISP generic framework

 - Usual set of cleanup, fixes and driver improvements

* tag 'media/v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (249 commits)
  media: rockchip: rkcif: add support for rk3568 vicap mipi capture
  media: rockchip: rkcif: add support for rk3568 vicap dvp capture
  media: rockchip: rkcif: add support for px30 vip dvp capture
  media: rockchip: rkcif: add abstraction for dma blocks
  media: rockchip: rkcif: add abstraction for interface and crop blocks
  media: rockchip: add driver for the rockchip camera interface
  media: dt-bindings: add rockchip rk3568 vicap
  media: dt-bindings: add rockchip px30 vip
  media: dt-bindings: video-interfaces: add defines for sampling modes
  Documentation: admin-guide: media: add rockchip camera interface
  media: mali-c55: Mark pm handlers as __maybe_unused
  media: mali-c55: Assert ISP blocks size correctness
  media: v4l2-isp: Rename block_info to block_type_info
  MAINTAINERS: Add entry for rzv2h-ivc driver
  media: platform: Add Renesas Input Video Control block driver
  dt-bindings: media: Add bindings for the RZ/V2H(P) IVC block
  Documentation: media: mali-c55: Document the mali-c55 parameter setting
  media: platform: Add mali-c55 parameters video node
  media: uapi: Add parameters structs to mali-c55-config.h
  media: mali-c55: Add image formats for Mali-C55 parameters buffer
  ...
 2025-12-04 08:15:19 -08:00
Linus Torvalds
f96163865a This has been another busy cycle for documentation, with a lot of 
build-system thrashing.  That work should slow down from here on out.
 
 - The various scripts and tools for documentation were spread out in
   several directories; now they are (almost) all coalesced under
   tools/docs/.  The holdout is the kernel-doc script, which cannot be
   easily moved without some further thought.
 
 - As the amount of Python code increases, we are accumulating modules that
   are imported by multiple programs.  These modules have been pulled
   together under tools/lib/python/ -- at least, for documentation-related
   programs.  There is other Python code in the tree that might eventually
   want to move toward this organization.
 
 - The Perl kernel-doc.pl script has been removed.  It is no longer used by
   default, and nobody has missed it, least of all anybody who actually had
   to look at it.
 
 - The docs build was controlled by a complex mess of makefilese that few
   dared to touch.  Mauro has moved that logic into a new program
   (tools/docs/sphinx-build-wrapper) that, with any luck at all, will be far
   easier to understand and maintain.
 
 - The get_feat.pl program, used to access information under
   Documentation/features/, has been rewritten in Python, bringing an end to
   the use of Perl in the docs subsystem.
 
 - The top-level README file has been reorganized into a more
   reader-friendly presentation.
 
 - A lot of Chinese translation additions
 
 - Typo fixes and documentation updates as usual
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Merge tag 'docs-6.19' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "This has been another busy cycle for documentation, with a lot of
  build-system thrashing. That work should slow down from here on out.

   - The various scripts and tools for documentation were spread out in
     several directories; now they are (almost) all coalesced under
     tools/docs/. The holdout is the kernel-doc script, which cannot be
     easily moved without some further thought.

   - As the amount of Python code increases, we are accumulating modules
     that are imported by multiple programs. These modules have been
     pulled together under tools/lib/python/ -- at least, for
     documentation-related programs. There is other Python code in the
     tree that might eventually want to move toward this organization.

   - The Perl kernel-doc.pl script has been removed. It is no longer
     used by default, and nobody has missed it, least of all anybody who
     actually had to look at it.

   - The docs build was controlled by a complex mess of makefilese that
     few dared to touch. Mauro has moved that logic into a new program
     (tools/docs/sphinx-build-wrapper) that, with any luck at all, will
     be far easier to understand and maintain.

   - The get_feat.pl program, used to access information under
     Documentation/features/, has been rewritten in Python, bringing an
     end to the use of Perl in the docs subsystem.

   - The top-level README file has been reorganized into a more
     reader-friendly presentation.

   - A lot of Chinese translation additions

   - Typo fixes and documentation updates as usual"

* tag 'docs-6.19' of git://git.lwn.net/linux: (164 commits)
  docs: makefile: move rustdoc check to the build wrapper
  README: restructure with role-based documentation and guidelines
  docs: kdoc: various fixes for grammar, spelling, punctuation
  docs: kdoc_parser: use '@' for Excess enum value
  docs: submitting-patches: Clarify that removal of Acks needs explanation too
  docs: kdoc_parser: add data/function attributes to ignore
  docs: MAINTAINERS: update Mauro's files/paths
  docs/zh_CN: Add wd719x.rst translation
  docs/zh_CN: Add libsas.rst translation
  get_feat.pl: remove it, as it got replaced by get_feat.py
  Documentation/sphinx/kernel_feat.py: use class directly
  tools/docs/get_feat.py: convert get_feat.pl to Python
  Documentation/admin-guide: fix typo and comment in cscope example
  docs/zh_CN: Add data-integrity.rst translation
  docs/zh_CN: Add blk-mq.rst translation
  docs/zh_CN: Add block/index.rst translation
  docs/zh_CN: Update the Chinese translation of kbuild.rst
  docs: bring some order to our Python module hierarchy
  docs: Move the python libraries to tools/lib/python
  Documentation/kernel-parameters: Move the kernel build options
  ...
 2025-12-03 11:34:28 -08:00
Pasha Tatashin
906a330624 docs: add luo documentation 
Add the documentation files for the Live Update Orchestrator

Link: https://lkml.kernel.org/r/20251125165850.3389713-9-pasha.tatashin@soleen.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Tested-by: David Matlack <dmatlack@google.com>
Cc: Aleksander Lobakin <aleksander.lobakin@intel.com>
Cc: Alexander Graf <graf@amazon.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Andriy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: anish kumar <yesanishhere@gmail.com>
Cc: Anna Schumaker <anna.schumaker@oracle.com>
Cc: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Chen Ridong <chenridong@huawei.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Daniel Wagner <wagi@kernel.org>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Jeffery <djeffery@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guixin Liu <kanie@linux.alibaba.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Joanthan Cameron <Jonathan.Cameron@huawei.com>
Cc: Joel Granados <joel.granados@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lennart Poettering <lennart@poettering.net>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Leon Romanovsky <leonro@nvidia.com>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: Marc Rutland <mark.rutland@arm.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Matthew Maurer <mmaurer@google.com>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Myugnjoo Ham <myungjoo.ham@samsung.com>
Cc: Parav Pandit <parav@nvidia.com>
Cc: Pratyush Yadav <ptyadav@amazon.de>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Saeed Mahameed <saeedm@nvidia.com>
Cc: Samiullah Khawaja <skhawaja@google.com>
Cc: Song Liu <song@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Stuart Hayes <stuart.w.hayes@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Cc: Thomas Weißschuh <linux@weissschuh.net>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: William Tu <witu@nvidia.com>
Cc: Yoann Congal <yoann.congal@smile.fr>
Cc: Zhu Yanjun <yanjun.zhu@linux.dev>
Cc: Zijun Hu <quic_zijuhu@quicinc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-11-27 14:24:39 -08:00
Pasha Tatashin
9e2fd062fa liveupdate: luo_core: Live Update Orchestrator 
Patch series "Live Update Orchestrator", v8.

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.

The other series that use LUO, are VFIO [1], IOMMU [2], and PCI [3]
preservations.

Github repo of this series [4].

The core of LUO is a framework for managing the lifecycle of preserved
resources through a userspace-driven interface. Key features include:

- Session Management
  Userspace agent (i.e. luod [5]) creates named sessions, each
  represented by a file descriptor (via centralized agent that controls
  /dev/liveupdate). The lifecycle of all preserved resources within a
  session is tied to this FD, ensuring automatic kernel cleanup if the
  controlling userspace agent crashes or exits unexpectedly.

- File Preservation
  A handler-based framework allows specific file types (demonstrated
  here with memfd) to be preserved. Handlers manage the serialization,
  restoration, and lifecycle of their specific file types.

- File-Lifecycle-Bound State
  A new mechanism for managing shared global state whose lifecycle is
  tied to the preservation of one or more files. This is crucial for
  subsystems like IOMMU or HugeTLB, where multiple file descriptors may
  depend on a single, shared underlying resource that must be preserved
  only once.

- KHO Integration
  LUO drives the Kexec Handover framework programmatically to pass its
  serialized metadata to the next kernel. The LUO state is finalized and
  added to the kexec image just before the reboot is triggered. In the
  future this step will also be removed once stateless KHO is
  merged [6].

- Userspace Interface
  Control is provided via ioctl commands on /dev/liveupdate for creating
  and retrieving sessions, as well as on session file descriptors for
  managing individual files.

- Testing
  The series includes a set of selftests, including userspace API
  validation, kexec-based lifecycle tests for various session and file
  scenarios, and a new in-kernel test module to validate the FLB logic.




Introduce LUO, a mechanism intended to facilitate kernel updates while
keeping designated devices operational across the transition (e.g., via
kexec).  The primary use case is updating hypervisors with minimal
disruption to running virtual machines.  For userspace side of hypervisor
update we have copyless migration.  LUO is for updating the kernel.

This initial patch lays the groundwork for the LUO subsystem.

Further functionality, including the implementation of state transition
logic, integration with KHO, and hooks for subsystems and file
descriptors, will be added in subsequent patches.

Create a character device at /dev/liveupdate.

A new uAPI header, <uapi/linux/liveupdate.h>, will define the necessary
structures.  The magic number for IOCTL is registered in
Documentation/userspace-api/ioctl/ioctl-number.rst.

Link: https://lkml.kernel.org/r/20251125165850.3389713-1-pasha.tatashin@soleen.com
Link: https://lkml.kernel.org/r/20251125165850.3389713-2-pasha.tatashin@soleen.com
Link: https://lore.kernel.org/all/20251018000713.677779-1-vipinsh@google.com/ [1]
Link: https://lore.kernel.org/linux-iommu/20250928190624.3735830-1-skhawaja@google.com [2]
Link: https://lore.kernel.org/linux-pci/20250916-luo-pci-v2-0-c494053c3c08@kernel.org [3]
Link: https://github.com/googleprodkernel/linux-liveupdate/tree/luo/v8 [4]
Link: https://tinyurl.com/luoddesign [5]
Link: https://lore.kernel.org/all/20251020100306.2709352-1-jasonmiu@google.com [6]
Link: https://lore.kernel.org/all/20251115233409.768044-1-pasha.tatashin@soleen.com [7]
Link: https://github.com/soleen/linux/blob/luo/v8b03/diff.v7.v8 [8]
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Tested-by: David Matlack <dmatlack@google.com>
Cc: Aleksander Lobakin <aleksander.lobakin@intel.com>
Cc: Alexander Graf <graf@amazon.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Andriy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: anish kumar <yesanishhere@gmail.com>
Cc: Anna Schumaker <anna.schumaker@oracle.com>
Cc: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Chen Ridong <chenridong@huawei.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Daniel Wagner <wagi@kernel.org>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Jeffery <djeffery@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guixin Liu <kanie@linux.alibaba.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Joanthan Cameron <Jonathan.Cameron@huawei.com>
Cc: Joel Granados <joel.granados@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lennart Poettering <lennart@poettering.net>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Leon Romanovsky <leonro@nvidia.com>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: Marc Rutland <mark.rutland@arm.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Matthew Maurer <mmaurer@google.com>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Myugnjoo Ham <myungjoo.ham@samsung.com>
Cc: Parav Pandit <parav@nvidia.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Saeed Mahameed <saeedm@nvidia.com>
Cc: Samiullah Khawaja <skhawaja@google.com>
Cc: Song Liu <song@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Stuart Hayes <stuart.w.hayes@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Cc: Thomas Weißschuh <linux@weissschuh.net>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: William Tu <witu@nvidia.com>
Cc: Yoann Congal <yoann.congal@smile.fr>
Cc: Zijun Hu <quic_zijuhu@quicinc.com>
Cc: Pratyush Yadav <ptyadav@amazon.de>
Cc: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-11-27 14:24:37 -08:00
Dave Airlie
ce0478b02e Linux 6.18-rc6 
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Merge tag 'v6.18-rc6' into drm-next

Linux 6.18-rc6

Backmerge in order to merge msm next

Signed-off-by: Dave Airlie <airlied@redhat.com>
 2025-11-21 08:55:08 +10:00
Daniel Scally
87b214ddfe Documentation: media: mali-c55: Document the mali-c55 parameter setting 
Document the mali-c55 parameter setting by expanding the relevant
pages in both admin-guide/ and userspace-api/.

Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Nayden Kanchev  <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-11-14 15:48:49 +01:00
Daniel Scally
b35d9f3e30 Documentation: media: mali-c55: Add Statistics documentation 
Add documentation explaining the ability to capture statistics from
the mali-c55 driver's new V4L2 device, as well as the various tap
points from which those statistics can be drawn in the ISP's
processing flow. Additionally add a page detailing the new V4L2
meta format for the mali-c55 statistics.

Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Nayden Kanchev  <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-11-14 15:48:49 +01:00
Daniel Scally
8d0bbed21e media: uapi: Add controls for Mali-C55 ISP 
Add definitions and documentation for the custom control that will
be needed by the Mali-C55 ISP driver. This will be a read only
bitmask of the driver's capabilities, informing userspace of which
blocks are fitted and which are absent.

Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-11-14 15:48:49 +01:00
Daniel Scally
2477ab0376 media: uapi: Add 20-bit bayer formats 
The Mali-C55 requires input data be in 20-bit format, MSB aligned.
Add some new media bus format macros to represent that input format.

Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-11-14 15:48:49 +01:00
Daniel Scally
ec4ac3cb71 media: uapi: Add MEDIA_BUS_FMT_RGB202020_1X60 format code 
The Mali-C55 ISP by ARM requires 20-bits per colour channel input on
the bus. Add a new media bus format code to represent it.

Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-11-14 15:48:49 +01:00
Jacopo Mondi
8923679cd4 media: Documentation: uapi: Add V4L2 ISP documentation 
Add userspace documentation for V4L2 ISP generic parameters and
statistics formats.

Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Michael Riesch <michael.riesch@collabora.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-11-14 15:48:48 +01:00
Gal Pressman
74d4432421 docs: netlink: Couple of intro-specs documentation fixes 
Fix typo "handul" to "handful" and remove outdated limitation
stating only generic netlink is supported (we have netlink-raw).

Reviewed-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Link: https://patch.msgid.link/20251105192908.686458-1-gal@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-11-06 14:50:59 -08:00
Hans Verkuil
bc22cd5e07 Documentation: media: fix VIDIOC_REMOVE_BUFS typo 
Add missing `. The missing backtick messed up the documentation output.

Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-11-03 15:58:42 +01:00
Brendan Jackman
aab703b3c6 Documentation: clarify PR_SPEC_L1D_FLUSH 
For PR_SPEC_STORE_BYPASS and PR_SPEC_INDIRECT_BRANCH, PR_SPEC_DISABLE
means "disable the speculation bug" i.e. "enable the mitigation".

For PR_SPEC_L1D_FLUSH, PR_SPEC_DISABLE means "disable the mitigation".
This is not obvious, so document it.

Signed-off-by: Brendan Jackman <jackmanb@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251015-l1d-flush-doc-v1-1-f8cefea3f2f2@google.com>
 2025-10-29 16:19:27 -06:00
Maxime Ripard
4f5f8baf73 dma-buf: heaps: cma: Create CMA heap for each CMA reserved region 
Aside from the main CMA region, it can be useful to allow userspace to
allocate from the other CMA reserved regions.

Indeed, those regions can have specific properties that can be useful to
a specific us-case.

For example, one of them platform I've been with has ECC enabled on the
entire memory but for a specific region. Using that region to allocate
framebuffers can be particular beneficial because enabling the ECC has a
performance and memory footprint cost.

Thus, exposing these regions as heaps user-space can allocate from and
import wherever needed allows to cover that use-case.

For now, only shared-dma-pools regions with the reusable property (ie,
backed by CMA) are supported, but eventually we'll want to support other
DMA pools types.

Since we collected all the CMA regions created during boot, we can
simply iterate over all of them to create the heaps.

This has a weird interaction with the recent work on the CMA name, in
particular the backward compatibility code created by commit
854acbe75f ("dma-buf: heaps: Give default CMA heap a fixed name").

Indeed, the old name was either 'reserved', or the name of the
reserved-memory region device tree node if the linux,cma-default
property was set.

In both these cases, we have now collected this region during boot, and
we're using the same name. So we're now largely redundant with the
code to handle backward compatibility code, and we can thus remove it
and the associated Kconfig option.

Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
   [sumits: rebased the doc to latest]
Link: https://lore.kernel.org/r/20251013-dma-buf-ecc-heap-v8-5-04ce150ea3d9@kernel.org
 2025-10-18 21:31:22 +05:30
Maxime Ripard
2034134de6 doc: dma-buf: List the heaps by name 
Since we're going to introduce multiple instances of the CMA heap
driver, there's no single CMA heap anymore.

Let's use the heap name instead to differentiate between all the heaps
available in the system.

While we're at it, let's also rework the backward compatibility part to
make it easier to amend later on.

Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
  [sumits: rebased to latest Doc]
Link: https://lore.kernel.org/r/20251013-dma-buf-ecc-heap-v8-1-04ce150ea3d9@kernel.org
 2025-10-18 21:31:21 +05:30
Mauro Carvalho Chehab
be63b06be5 docs: media: dvb: fix dmx.h.rst.exceptions 
There are lots of broken links on dmx. Those are mostly linked
to namespace handling.

Yet, some symbols were pointed to the wrong locations, and there
are some definitions that aren't needed.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <b2acf243771529daa925afddd2b68d07d7bbb164.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:57:00 -06:00
Mauro Carvalho Chehab
c7d830d26b docs: media: dvb: headers: warn about broken cross references 
Enable cross-reference warnings for demux header.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <8f98dde399df8b937dadf09168194bacce682c7d.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:57:00 -06:00
Mauro Carvalho Chehab
6393c3780e docs: media: dmx_types: place kerneldoc at the right namespace 
The DVB documentation is using DTV.dmx for all demux symbols.

Use such domain for kernel-doc documentation.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <27fcc036fb5c80bda8116029e1964ad229208095.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:57:00 -06:00
Mauro Carvalho Chehab
95a0bd5d79 docs: cec: show broken xrefs and show TOC instead of cec.h content 
Enable xref broken warnings. While here, change the output to
only show cross-references, as there's no need to show the entire cec.h
header at the docs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <c587872ca3685213d9f8e88277404c9e253633df.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:57:00 -06:00
Mauro Carvalho Chehab
becd89fd86 docs: cec: cec.h.rst.exceptions: fix broken references from cec.h 
All references there belong to CEC namespace.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <dd1270dd5d91538cdfb0b087127c53a9f4ba7885.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
7ef84239ed media: docs: add some C domain missing references 
Some enum/struct fields don't contain C domain references.
Add them to avoid broken xrefs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <c9b036938197f1dd5bc93f5c5be0245bd9e5d1ee.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
753b113b77 media: docs: videodev2.h.rst.exceptions: ignore struct __kernel_v4l2_timeval 
This is an ancillary struct used for year-2038 compat logic.
It is not meant to be used directly on userspace.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <a6a0dc7366b1a5d7184b8f7d4ba27689051a1f6a.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
fec3d4c376 media: docs: add a missing reference for VIDIOC_QUERY_CTRL 
This one is missing its c:macro definition.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <46f86be6ace28abe83ea9ce6fa6138e40185a23a.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
145b1d5c2e docs: media: videodev2.h.rst.exceptions: fix namespace on refs 
Media uses V4L domain, but the replace rules are not considering
it.

Fix them.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <927f9c19d90b62ffda950cdac9bba23c2ca09f53.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
ce062cdc2e docs: media: add missing c namespace to V4L headers 
Media references belong to V4L namespace. Fix a lot of broken
links when including videodev2.h and probably fixing several
other broken cross-references between different files inside
media docs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <b69fc5bd43da7d326b9f4720df59388088c64065.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
2792fc7307 docs: media: mediactl: use TOC instead of file contents 
All we wanted were to have a way to link the comprehensive
documentation with the actual symbols parsed from the header
file, as this helps to identify any broken references.

Use the new :toc: flag for media controller and enable warnings.

Here, we need to adjust the exceptions file to setup the C
namespace accordingly.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <5c8a87be712397563fc8ca914c3d92fe675e4071.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
94d95887ea docs: media: rc: use TOC instead of file contents for LIRC header 
All we wanted were to have a way to link the comprehensive
documentation with the actual symbols parsed from the header
file, as this helps to identify any broken references.

Use the new :toc: flag for LIRC and enable warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <94dc601b4777ca544489ffc6cef9a2da5fe28e0e.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
a75968226c docs: media: dvb: enable warnings for most headers 
Except for two exception rules and dmx.h, the other files
are already handling properly cross references.

Fix the two exception rules for frontend.h, as those are
false-positives:

	include/uapi/linux/dvb/frontend.h:959: WARNING: can't link to: c:type:: FE_GET_PROPERTY
	include/uapi/linux/dvb/frontend.h:933: WARNING: can't link to: c:func:: FE_SET_FRONTEND_TUNE_MODE

The dmx.h are actual issues that will require an extra
patch to fill gaps.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <9ae6556ebd47de4f066a149ab0bbe7ce27acf2c4.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
f0eb1b4ce7 docs: media: dvb: use TOC instead of file contents at headers 
All we wanted were to have a way to link the comprehensive
documentation with the actual symbols parsed from the header
file, as this helps to identify any broken references.

Use the new :toc: flag for DVB.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <dbe95d83ae2117ed532fda423fd1c1d9906b7a19.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
641a4a13f3 docs: kernel_include.py: propose alternatives 
Specially when using c::namespace, it is not hard to break
a reference by forgetting to add a domain. Also, different
cases and using "-"/"_" the wrong way are typical cases that
people often gets wrong.

We might use a more complex logic here to also check for typos,
but let's keep it plain, simple.

This is enough to get thos exeptions from media controller:

  .../include/uapi/linux/media.h:26: WARNING: Invalid xref: c:type:`media_device_info`. Possible alternatives:
	c:type:`MC.media_device_info` (from mediactl/media-ioc-device-info)
  .../include/uapi/linux/media.h:149: WARNING: Invalid xref: c:type:`media_entity_desc`. Possible alternatives:
	c:type:`MC.media_entity_desc` (from mediactl/media-ioc-enum-entities)
  .../include/uapi/linux/media.h:228: WARNING: Invalid xref: c:type:`media_link_desc`. Possible alternatives:
	c:type:`MC.media_link_desc` (from mediactl/media-ioc-enum-links)
  .../include/uapi/linux/media.h:235: WARNING: Invalid xref: c:type:`media_links_enum`. Possible alternatives:
	c:type:`MC.media_links_enum` (from mediactl/media-ioc-enum-links)
  .../include/uapi/linux/media.h:212: WARNING: Invalid xref: c:type:`media_pad_desc`. Possible alternatives:
	c:type:`MC.media_pad_desc` (from mediactl/media-ioc-enum-links)
  .../include/uapi/linux/media.h:298: WARNING: Invalid xref: c:type:`media_v2_entity`. Possible alternatives:
	c:type:`MC.media_v2_entity` (from mediactl/media-ioc-g-topology)
  .../include/uapi/linux/media.h:312: WARNING: Invalid xref: c:type:`media_v2_interface`. Possible alternatives:
	c:type:`MC.media_v2_interface` (from mediactl/media-ioc-g-topology)
  .../include/uapi/linux/media.h:307: WARNING: Invalid xref: c:type:`media_v2_intf_devnode`. Possible alternatives:
	c:type:`MC.media_v2_intf_devnode` (from mediactl/media-ioc-g-topology)
  .../include/uapi/linux/media.h:341: WARNING: Invalid xref: c:type:`media_v2_link`. Possible alternatives:
	c:type:`MC.media_v2_link` (from mediactl/media-ioc-g-topology)
  .../include/uapi/linux/media.h:333: WARNING: Invalid xref: c:type:`media_v2_pad`. Possible alternatives:
	c:type:`MC.media_v2_pad` (from mediactl/media-ioc-g-topology)
  .../include/uapi/linux/media.h:349: WARNING: Invalid xref: c:type:`media_v2_topology`. Possible alternatives:
	c:type:`MC.media_v2_topology` (from mediactl/media-ioc-g-topology)

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <4c75d277e950e619ea00ba2dea336853a4aac976.1759329363.git.mchehab+huawei@kernel.org>
 2025-10-17 13:56:59 -06:00
Thomas Zimmermann
9b966ae422 Merge drm/drm-next into drm-misc-next 
Updating drm-misc-next to the state of v6.18-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
 2025-10-13 09:19:19 +02:00
Maxime Ripard
507211e3c7 Documentation: dma-buf: heaps: Add naming guidelines 
We've discussed a number of times of how some heap names are bad, but
not really what makes a good heap name.

Let's document what we expect the heap names to look like.

Reviewed-by: Andrew Davis <afd@ti.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/all/20250728-dma-buf-heap-names-doc-v4-1-f73f71cf0dfd@kernel.org/
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
 2025-10-06 22:14:11 +05:30
Linus Torvalds
ee2fe81cdc It has been a relatively busy cycle in docsland, with changes all over: 
- Bring the kernel memory-model docs into the Sphinx build in the "literal
   include" mode.
 
 - Lots of build-infrastructure work, further cleaning up long-term
   kernel-doc technical debt.  The sphinx-pre-install tool has been
   converted to Python and updated for current systems.
 
 - A new tool to detect when documents have been moved and generate HTML
   redirects; this can be used on kernel.org (or any other site hosting the
   rendered docs) to avoid breaking links.
 
 - Automated processing of the YAML files describing the netlink protocol.
 
 - A significant update of the maintainer's PGP guide.
 
 ...and a seemingly endless series of typo fixes, build-problem fixes, etc.
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Merge tag 'docs-6.18' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "It has been a relatively busy cycle in docsland, with changes all
  over:

   - Bring the kernel memory-model docs into the Sphinx build in the
     "literal include" mode.

   - Lots of build-infrastructure work, further cleaning up long-term
     kernel-doc technical debt. The sphinx-pre-install tool has been
     converted to Python and updated for current systems.

   - A new tool to detect when documents have been moved and generate
     HTML redirects; this can be used on kernel.org (or any other site
     hosting the rendered docs) to avoid breaking links.

   - Automated processing of the YAML files describing the netlink
     protocol.

   - A significant update of the maintainer's PGP guide.

  ... and a seemingly endless series of typo fixes, build-problem fixes,
  etc"

* tag 'docs-6.18' of git://git.lwn.net/linux: (193 commits)
  Documentation/features: Update feature lists for 6.17-rc7
  docs: remove cdomain.py
  Documentation/process: submitting-patches: fix typo in "were do"
  docs: dev-tools/lkmm: Fix typo of missing file extension
  Documentation: trace: histogram: Convert ftrace docs cross-reference
  Documentation: trace: histogram-design: Wrap introductory note in note:: directive
  Documentation: trace: historgram-design: Separate sched_waking histogram section heading and the following diagram
  Documentation: trace: histogram-design: Trim trailing vertices in diagram explanation text
  Documentation: trace: histogram: Fix histogram trigger subsection number order
  docs: driver-api: fix spelling of "buses".
  Documentation: fbcon: Use admonition directives
  Documentation: fbcon: Reindent 8th step of attach/detach/unload
  Documentation: fbcon: Add boot options and attach/detach/unload section headings
  docs: filesystems: sysfs: add remaining top level sysfs directory descriptions
  docs: filesystems: sysfs: clarify symlink destinations in dev and bus/devices descriptions
  docs: filesystems: sysfs: remove top level sysfs net directory
  docs: maintainer: Fix ambiguous subheading formatting
  docs: kdoc: a few more dump_typedef() tweaks
  docs: kdoc: remove redundant comment stripping in dump_typedef()
  docs: kdoc: remove some dead code in dump_typedef()
  ...
 2025-10-03 17:16:13 -07:00
Linus Torvalds
07fdad3a93 Networking changes for 6.18. 
Core & protocols
 ----------------
 
  - Improve drop account scalability on NUMA hosts for RAW and UDP sockets
    and the backlog, almost doubling the Pps capacity under DoS.
 
  - Optimize the UDP RX performance under stress, reducing contention,
    revisiting the binary layout of the involved data structs and
    implementing NUMA-aware locking. This improves UDP RX performance by
    an additional 50%, even more under extreme conditions.
 
  - Add support for PSP encryption of TCP connections; this mechanism has
    some similarities with IPsec and TLS, but offers superior HW offloads
    capabilities.
 
  - Ongoing work to support Accurate ECN for TCP. AccECN allows more than
    one congestion notification signal per RTT and is a building block for
    Low Latency, Low Loss, and Scalable Throughput (L4S).
 
  - Reorganize the TCP socket binary layout for data locality, reducing
    the number of touched cachelines in the fastpath.
 
  - Refactor skb deferral free to better scale on large multi-NUMA hosts,
    this improves TCP and UDP RX performances significantly on such HW.
 
  - Increase the default socket memory buffer limits from 256K to 4M to
    better fit modern link speeds.
 
  - Improve handling of setups with a large number of nexthop, making dump
    operating scaling linearly and avoiding unneeded synchronize_rcu() on
    delete.
 
  - Improve bridge handling of VLAN FDB, storing a single entry per bridge
    instead of one entry per port; this makes the dump order of magnitude
    faster on large switches.
 
  - Restore IP ID correctly for encapsulated packets at GSO segmentation
    time, allowing GRO to merge packets in more scenarios.
 
  - Improve netfilter matching performance on large sets.
 
  - Improve MPTCP receive path performance by leveraging recently
    introduced core infrastructure (skb deferral free) and adopting recent
    TCP autotuning changes.
 
  - Allow bridges to redirect to a backup port when the bridge port is
    administratively down.
 
  - Introduce MPTCP 'laminar' endpoint that con be used only once per
    connection and simplify common MPTCP setups.
 
  - Add RCU safety to dst->dev, closing a lot of possible races.
 
  - A significant crypto library API for SCTP, MPTCP and IPv6 SR, reducing
    code duplication.
 
  - Supports pulling data from an skb frag into the linear area of an XDP
    buffer.
 
 Things we sprinkled into general kernel code
 --------------------------------------------
 
  - Generate netlink documentation from YAML using an integrated
    YAML parser.
 
 Driver API
 ----------
 
  - Support using IPv6 Flow Label in Rx hash computation and RSS queue
    selection.
 
  - Introduce API for fetching the DMA device for a given queue, allowing
    TCP zerocopy RX on more H/W setups.
 
  - Make XDP helpers compatible with unreadable memory, allowing more
    easily building DevMem-enabled drivers with a unified XDP/skbs
    datapath.
 
  - Add a new dedicated ethtool callback enabling drivers to provide the
    number of RX rings directly, improving efficiency and clarity in RX
    ring queries and RSS configuration.
 
  - Introduce a burst period for the health reporter, allowing better
    handling of multiple errors due to the same root cause.
 
  - Support for DPLL phase offset exponential moving average, controlling
    the average smoothing factor.
 
 Device drivers
 --------------
 
  - Add a new Huawei driver for 3rd gen NIC (hinic3).
 
  - Add a new SpacemiT driver for K1 ethernet MAC.
 
  - Add a generic abstraction for shared memory communication devices
    (dibps)
 
  - Ethernet high-speed NICs:
    - nVidia/Mellanox:
      - Use multiple per-queue doorbell, to avoid MMIO contention issues
      - support adjacent functions, allowing them to delegate their
        SR-IOV VFs to sibling PFs
      - support RSS for IPSec offload
      - support exposing raw cycle counters in PTP and mlx5
      - support for disabling host PFs.
    - Intel (100G, ice, idpf):
      - ice: support for SRIOV VFs over an Active-Active link aggregate
      - ice: support for firmware logging via debugfs
      - ice: support for Earliest TxTime First (ETF) hardware offload
      - idpf: support basic XDP functionalities and XSk
    - Broadcom (bnxt):
      - support Hyper-V VF ID
      - dynamic SRIOV resource allocations for RoCE
    - Meta (fbnic):
      - support queue API, zero-copy Rx and Tx
      - support basic XDP functionalities
      - devlink health support for FW crashes and OTP mem corruptions
      - expand hardware stats coverage to FEC, PHY, and Pause
    - Wangxun:
      - support ethtool coalesce options
      - support for multiple RSS contexts
 
  - Ethernet virtual:
    - Macsec:
      - replace custom netlink attribute checks with policy-level checks
    - Bonding:
      - support aggregator selection based on port priority
    - Microsoft vNIC:
      - use page pool fragments for RX buffers instead of full pages to
        improve memory efficiency
 
  - Ethernet NICs consumer, and embedded:
    - Qualcomm: support Ethernet function for IPQ9574 SoC
    - Airoha: implement wlan offloading via NPU
    - Freescale
      - enetc: add NETC timer PTP driver and add PTP support
      - fec: enable the Jumbo frame support for i.MX8QM
    - Renesas (R-Car S4): support HW offloading for layer 2 switching
      - support for RZ/{T2H, N2H} SoCs
    - Cadence (macb): support TAPRIO traffic scheduling
    - TI:
      - support for Gigabit ICSS ethernet SoC (icssm-prueth)
    - Synopsys (stmmac): a lot of cleanups
 
  - Ethernet PHYs:
    - Support 10g-qxgmi phy-mode for AQR412C, Felix DSA and Lynx PCS
      driver
    - Support bcm63268 GPHY power control
    - Support for Micrel lan8842 PHY and PTP
    - Support for Aquantia AQR412 and AQR115
 
  - CAN:
    - a large CAN-XL preparation work
    - reorganize raw_sock and uniqframe struct to minimize memory usage
    - rcar_canfd: update the CAN-FD handling
 
  - WiFi:
    - extended Neighbor Awareness Networking (NAN) support
    - S1G channel representation cleanup
    - improve S1G support
 
  - WiFi drivers:
    - Intel (iwlwifi):
      - major refactor and cleanup
    - Broadcom (brcm80211):
      - support for AP isolation
    - RealTek (rtw88/89) rtw88/89:
      - preparation work for RTL8922DE support
    - MediaTek (mt76):
      - HW restart improvements
      - MLO support
    - Qualcomm/Atheros (ath10k_
      - GTK rekey fixes
 
  - Bluetooth drivers:
    - btusb: support for several new IDs for MT7925
    - btintel: support for BlazarIW core
    - btintel_pcie: support for _suspend() / _resume()
    - btintel_pcie: support for Scorpious, Panther Lake-H484 IDs
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "Core & protocols:

   - Improve drop account scalability on NUMA hosts for RAW and UDP
     sockets and the backlog, almost doubling the Pps capacity under DoS

   - Optimize the UDP RX performance under stress, reducing contention,
     revisiting the binary layout of the involved data structs and
     implementing NUMA-aware locking. This improves UDP RX performance
     by an additional 50%, even more under extreme conditions

   - Add support for PSP encryption of TCP connections; this mechanism
     has some similarities with IPsec and TLS, but offers superior HW
     offloads capabilities

   - Ongoing work to support Accurate ECN for TCP. AccECN allows more
     than one congestion notification signal per RTT and is a building
     block for Low Latency, Low Loss, and Scalable Throughput (L4S)

   - Reorganize the TCP socket binary layout for data locality, reducing
     the number of touched cachelines in the fastpath

   - Refactor skb deferral free to better scale on large multi-NUMA
     hosts, this improves TCP and UDP RX performances significantly on
     such HW

   - Increase the default socket memory buffer limits from 256K to 4M to
     better fit modern link speeds

   - Improve handling of setups with a large number of nexthop, making
     dump operating scaling linearly and avoiding unneeded
     synchronize_rcu() on delete

   - Improve bridge handling of VLAN FDB, storing a single entry per
     bridge instead of one entry per port; this makes the dump order of
     magnitude faster on large switches

   - Restore IP ID correctly for encapsulated packets at GSO
     segmentation time, allowing GRO to merge packets in more scenarios

   - Improve netfilter matching performance on large sets

   - Improve MPTCP receive path performance by leveraging recently
     introduced core infrastructure (skb deferral free) and adopting
     recent TCP autotuning changes

   - Allow bridges to redirect to a backup port when the bridge port is
     administratively down

   - Introduce MPTCP 'laminar' endpoint that con be used only once per
     connection and simplify common MPTCP setups

   - Add RCU safety to dst->dev, closing a lot of possible races

   - A significant crypto library API for SCTP, MPTCP and IPv6 SR,
     reducing code duplication

   - Supports pulling data from an skb frag into the linear area of an
     XDP buffer

  Things we sprinkled into general kernel code:

   - Generate netlink documentation from YAML using an integrated YAML
     parser

  Driver API:

   - Support using IPv6 Flow Label in Rx hash computation and RSS queue
     selection

   - Introduce API for fetching the DMA device for a given queue,
     allowing TCP zerocopy RX on more H/W setups

   - Make XDP helpers compatible with unreadable memory, allowing more
     easily building DevMem-enabled drivers with a unified XDP/skbs
     datapath

   - Add a new dedicated ethtool callback enabling drivers to provide
     the number of RX rings directly, improving efficiency and clarity
     in RX ring queries and RSS configuration

   - Introduce a burst period for the health reporter, allowing better
     handling of multiple errors due to the same root cause

   - Support for DPLL phase offset exponential moving average,
     controlling the average smoothing factor

  Device drivers:

   - Add a new Huawei driver for 3rd gen NIC (hinic3)

   - Add a new SpacemiT driver for K1 ethernet MAC

   - Add a generic abstraction for shared memory communication
     devices (dibps)

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - Use multiple per-queue doorbell, to avoid MMIO contention
           issues
         - support adjacent functions, allowing them to delegate their
           SR-IOV VFs to sibling PFs
         - support RSS for IPSec offload
         - support exposing raw cycle counters in PTP and mlx5
         - support for disabling host PFs.
      - Intel (100G, ice, idpf):
         - ice: support for SRIOV VFs over an Active-Active link
           aggregate
         - ice: support for firmware logging via debugfs
         - ice: support for Earliest TxTime First (ETF) hardware offload
         - idpf: support basic XDP functionalities and XSk
      - Broadcom (bnxt):
         - support Hyper-V VF ID
         - dynamic SRIOV resource allocations for RoCE
      - Meta (fbnic):
         - support queue API, zero-copy Rx and Tx
         - support basic XDP functionalities
         - devlink health support for FW crashes and OTP mem corruptions
         - expand hardware stats coverage to FEC, PHY, and Pause
      - Wangxun:
         - support ethtool coalesce options
         - support for multiple RSS contexts

   - Ethernet virtual:
      - Macsec:
         - replace custom netlink attribute checks with policy-level
           checks
      - Bonding:
         - support aggregator selection based on port priority
      - Microsoft vNIC:
         - use page pool fragments for RX buffers instead of full pages
           to improve memory efficiency

   - Ethernet NICs consumer, and embedded:
      - Qualcomm: support Ethernet function for IPQ9574 SoC
      - Airoha: implement wlan offloading via NPU
      - Freescale
         - enetc: add NETC timer PTP driver and add PTP support
         - fec: enable the Jumbo frame support for i.MX8QM
      - Renesas (R-Car S4):
         - support HW offloading for layer 2 switching
         - support for RZ/{T2H, N2H} SoCs
      - Cadence (macb): support TAPRIO traffic scheduling
      - TI:
         - support for Gigabit ICSS ethernet SoC (icssm-prueth)
      - Synopsys (stmmac): a lot of cleanups

   - Ethernet PHYs:
      - Support 10g-qxgmi phy-mode for AQR412C, Felix DSA and Lynx PCS
        driver
      - Support bcm63268 GPHY power control
      - Support for Micrel lan8842 PHY and PTP
      - Support for Aquantia AQR412 and AQR115

   - CAN:
      - a large CAN-XL preparation work
      - reorganize raw_sock and uniqframe struct to minimize memory
        usage
      - rcar_canfd: update the CAN-FD handling

   - WiFi:
      - extended Neighbor Awareness Networking (NAN) support
      - S1G channel representation cleanup
      - improve S1G support

   - WiFi drivers:
      - Intel (iwlwifi):
         - major refactor and cleanup
      - Broadcom (brcm80211):
         - support for AP isolation
      - RealTek (rtw88/89) rtw88/89:
         - preparation work for RTL8922DE support
      - MediaTek (mt76):
         - HW restart improvements
         - MLO support
      - Qualcomm/Atheros (ath10k):
         - GTK rekey fixes

   - Bluetooth drivers:
      - btusb: support for several new IDs for MT7925
      - btintel: support for BlazarIW core
      - btintel_pcie: support for _suspend() / _resume()
      - btintel_pcie: support for Scorpious, Panther Lake-H484 IDs"

* tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1536 commits)
  net: stmmac: Add support for Allwinner A523 GMAC200
  dt-bindings: net: sun8i-emac: Add A523 GMAC200 compatible
  Revert "Documentation: net: add flow control guide and document ethtool API"
  octeontx2-pf: fix bitmap leak
  octeontx2-vf: fix bitmap leak
  net/mlx5e: Use extack in set rxfh callback
  net/mlx5e: Introduce mlx5e_rss_params for RSS configuration
  net/mlx5e: Introduce mlx5e_rss_init_params
  net/mlx5e: Remove unused mdev param from RSS indir init
  net/mlx5: Improve QoS error messages with actual depth values
  net/mlx5e: Prevent entering switchdev mode with inconsistent netns
  net/mlx5: HWS, Generalize complex matchers
  net/mlx5: Improve write-combining test reliability for ARM64 Grace CPUs
  selftests/net: add tcp_port_share to .gitignore
  Revert "net/mlx5e: Update and set Xon/Xoff upon MTU set"
  net: add NUMA awareness to skb_attempt_defer_free()
  net: use llist for sd->defer_list
  net: make softnet_data.defer_count an atomic
  selftests: drv-net: psp: add tests for destroying devices
  selftests: drv-net: psp: add test for auto-adjusting TCP MSS
  ...
 2025-10-02 15:17:01 -07:00
Linus Torvalds
f79e772258 [GIT PULL for v6.18] media updates 
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Merge tag 'media/v6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - Added a new V4L2 clock helper

 - New camera sensor drivers

 - iris: Enable H.264/H.265 encoder support and fixes in iris driver
   common code

 - camss: add support for new SoC flavors

 - venus: add new SoC support

 - tc358743: support more infoframe types

 - Various fixes, driver improvements and cleanups

* tag 'media/v6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (439 commits)
  media: venus: pm_helpers: add fallback for the opp-table
  media: qcom: camss: vfe: Fix BPL alignment for QCM2290
  media: tuner: xc5000: Fix use-after-free in xc5000_release
  media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe
  media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove
  media: vsp1: Export missing vsp1_isp_free_buffer symbol
  media: renesas: vsp1: Convert to SYSTEM_SLEEP/RUNTIME_PM_OPS()
  media: renesas: ceu: Convert to RUNTIME_PM_OPS()
  media: renesas: fdp1: Convert to RUNTIME_PM_OPS()
  media: renesas: rcar-vin: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
  media: renesas: rcar_drif: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
  media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID
  media: uvcvideo: Support UVC_CROSXU_CONTROL_IQ_PROFILE
  media: uvcvideo: Run uvc_ctrl_init_ctrl for all controls
  media: uvcvideo: Shorten the transfer size non compliance message
  media: uvcvideo: Do not re-reference dev->udev
  media: uvcvideo: Use intf instead of udev for printks
  media: uvcvideo: Move video_device under video_queue
  media: uvcvideo: Drop stream->mutex
  media: uvcvideo: Move MSXU_CONTROL_METADATA definition to header
  ...
 2025-10-02 13:13:26 -07:00
Haren Myneni
043439ad1a powerpc/pseries: Define papr-hvpipe ioctl 
PowerPC FW introduced HVPIPE RTAS calls such as
ibm,send-hvpipe-msg and ibm,receive-hvpipe-msg for the user space
to exchange information with different sources such as Hardware
Management Consoles (HMC).

HVPIPE_IOC_CREATE_HANDLE is defined to use /dev/papr-hvpipe
interface for ibm,send-hvpipe-msg and ibm,receive-hvpipe-msg
RTAS calls.

Also defined papr_hvpipe_hdr which will added in the payload
that is passed between the kernel and the user space.

Signed-off-by: Haren Myneni <haren@linux.ibm.com>
Tested-by: Shashank MS <shashank.gowda@in.ibm.com>
Reviewed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250909084402.1488456-2-haren@linux.ibm.com
 2025-09-15 13:38:39 +05:30
Hans Verkuil
9bff72cb99 Documentation: update Hans Verkuil's email address 
Replace hverkuil@xs4all.nl by hverkuil@kernel.org.

Signed-off-by: Hans Verkuil <hverkuil@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
 2025-09-09 15:58:51 +02:00
Hans Verkuil
1dd41ad756 Documentation: media: update Hans Verkuil's email address 
Replace hverkuil-cisco@xs4all.nl by hverkuil@kernel.org.

Signed-off-by: Hans Verkuil <hverkuil@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
 2025-09-09 15:58:35 +02:00
Mauro Carvalho Chehab
8a298579cd scripts: sphinx-build-wrapper: get rid of uapi/media Makefile 
Now that kernel-include directive supports parsing data
structs directly, we can finally get rid of the horrible hack
we added to support parsing media uAPI symbols.

As a side effect, Documentation/output doesn't have anymore
media auto-generated .rst files on it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/5dbb257a4b283697271c9c7b8f4713857e8191c8.1755872208.git.mchehab+huawei@kernel.org
 2025-08-29 15:54:43 -06:00
Mauro Carvalho Chehab
319d2a7ebe docs: uapi: media: Makefile: use parse-headers.py 
Now that we have a new parser, use it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/7025759744f74058eee55c35e8cd8cb5a2953fca.1755872208.git.mchehab+huawei@kernel.org
 2025-08-29 15:54:42 -06:00
Jakub Kicinski
d23ad54de7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 
Cross-merge networking fixes after downstream PR (net-6.17-rc4).

No conflicts.

Adjacent changes:

drivers/net/ethernet/intel/idpf/idpf_txrx.c
  02614eee26 ("idpf: do not linearize big TSO packets")
  6c4e684802 ("idpf: remove obsolete stashing code")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2025-08-29 11:48:01 -07:00
Hanne-Lotta Mäenpää
2dc344f89f media: Documentation: Improve grammar in DVB API 
Fix typos and punctuation and improve grammar in documentation.

Signed-off-by: Hanne-Lotta Mäenpää <hannelotta@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-08-29 11:04:01 +02:00
Sakari Ailus
8cf320f3f4 media: uapi: Documentation: Improve column width hints for examples 
Use less arbitrary widths for the columns in metadata layout examples.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-08-25 15:40:40 +02:00
Sakari Ailus
4eacb83c19 media: Documentation: Move streams documentation one level up 
While streams can be found within pads, they do deserve their own
documentation section on the same level than pads. Move them one level up.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-08-25 15:40:34 +02:00
Sakari Ailus
a7067c7302 media: Documentation: Reword split of sensor driver to two classes 
The sensor drivers do not configure the output size of the sensors but the
entire internal pipeline. Reflect this in the documentation.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-08-25 15:40:33 +02:00
Sakari Ailus
c95c1ea8f5 media: Documentation: Add a hyphen to list-based 
Add a hyphen to list-based for uniform spelling in camera-sensor.rst.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
 2025-08-25 15:40:33 +02:00
Alessandro Ratti
447c6141e8 iommufd: Fix spelling errors in iommufd.rst 
This patch corrects two minor spelling issues found in
Documentation/userspace-api/iommufd.rst:

- "primarly" -> "primarily"
- "sharable" -> "shareable"

Found using codespell(1).

Link: https://patch.msgid.link/r/20250815153840.188213-2-alessandro@0x65c.net
Signed-off-by: Alessandro Ratti <alessandro@0x65c.net>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
 2025-08-18 11:15:06 -03:00