<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/rust/kernel/dma.rs, branch v7.3-rc2</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>Merge tag 'drm-next-2026-08-20' of https://gitlab.freedesktop.org/drm/kernel</title>
<updated>2026-08-21T15:41:00+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2026-08-21T15:41:00+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=4e69c1856bfd9ffb7e9d335a25842fa211628929'/>
<id>4e69c1856bfd9ffb7e9d335a25842fa211628929</id>
<content type='text'>
Pull drm updates from Dave Airlie:
 "Highlights:

   - dmemcg eviction support is good for low VRAM things like Steam
     Machine

   - AMD adds gfx6-8 modifier support for older GPUs that enables a
     bunch of wayland stuff

   - i915/xe has some new hw support but also a lot of display
     refactoring

  Everything:

  perf:
   - export perf_allow_ APIs for xe

  udmabuf:
   - remove default size limit of 64MB

  rust:
   - i/o rework (signed tag from driver-core tree)
   - add registration guard and registration data
   - fix unbounded lifetimes in ioctl handler args
   - fix a drm_dev_register race
   - gem_shmem: add DmaResvGuard helper
   - gpuvm: require send/sync for driver data
       - implement send/sync for GpuVaAlloc and GpuVmBo
       - add SmContext lifetime
   - rename dma_handle to dma_address
   - change pci_sriov_get_totalvfs return to unsigned int

  core:
   - create drm_of_get_panel_orientation
   - send per-connector hotplug events
   - add thunderbolt UBHR tunneling support

  connector:
   - add color format property

  dmem:
   - introduce a peak file
   - accept one region per limit
   - add dmemcg support for eviction

  gpusvm:
   - reorg code to give drivers more flexibility

  atomic:
   - add create_state callback and helper
   - add documentation on atomic commit lifetime

  buddy:
   - add per-order free
   - add used block scoreboard
   - fix UAF
   - test buffer clearance on resume
   - add phys_addr-&gt;block helper

  gem:
   - drop DRIVER_GEM_GPUVA flag

  ttm:
   - be more aggressive allocating below protection limit

  sched:
   - add test suite for concurrent job submissions

  hdmi:
   - hook the color format property in helpers

  mipi-dsi:
   - add MIPI_DSI_MODE_DSC_ALL_SLICES_IN_PKT

  bridge:
   - add atomic create callbacks
   - drop atomic reset
   - display-connector: don't autoenable HPD IRQ
   - trigger initial HPD for DP
   - ti-sn65dsi83: remove NO_HFP and NO_HBP mode flags
   - analogix_dp: switch to DP link training helpers

  dp:
   - add support for DSC max delta BPP

  edid:
   - parse panel type from DisplayID 2.x Display Parameters

  sysfb:
   - improve panel, stride, framebuffer size validation

  panel:
   - implement ref counting for struct drm_panel
   - himax-hx83121a: add backlight regulator support
   - novatek-nt36672a: Inline panel init sequences
   - visionox-vtdr6130: enable DSC
   - novatek-nt37801: Use mipi_dsi_*_multi() functions
   - samsung-s6d16d0: Fix prepare error handling
   - support Novatek NT36536 plus DT bindings
   - sofef00: fix backlight updates
   - osd101t2587: use mipi_dsi_*_multi interface
   - panel-edp: adjust timing for AUO displays
   - panel-lvds: support Opto Logic SCX1001511GGC49
   - panel-simple: support Kyocera tcg070wvlq
   - panel-edp: quirks
       - AUO B116XAT04.3, CMN N116BCP-EA2, CSW MNB601LS1-8
       - BOE NV116WH2-M30, BOE NT116WHM-N21, BOE NV116FH1-M31
       - BOE NV116FH1-M30, NV140FHM-N5B, TM156VDXP25
       - BOE NE160QDM-NY1, MB116AS01
   - new:
       - Samsung ATNA40HQ08-0, Anbernic TD4310
       - Chipone ICNA35XX, Ilitek ILI9488
       - Ilitek ILI7807S, Renesas R63419
       - MNE001BS6-2, MNF601BS4-1, Sharp LQ120P1JX51

  virtio:
   - add support for save/restore virtio_gpu_objects
   - abort vq wait on device removal

  amdgpu:
   - add color format DRM property
   - initial compute pipe reset support
   - add GFX 6-8 modifier support
   - initial DCN 6.0.0 support
   - dmemcg eviction support
   - improved boundary checking for bios parsing
   - RAS updates and rework
   - VCN secure submission fixes
   - 8K panel fix
   - Display KUNIT tests
   - parse panel type from DisplayID
   - Align IP discovery to pci device lifetime
   - SOC15 register macro cleanups
   - UVD memory placement fixes
   - GFX9 mode2 reset fixes
   - drop unnecessary BUG/BUG_ON
   - GFX8 soft reset rework
   - enable soft reset on GFX8
   - PSP/SMU 15.0.9 update
   - VI ASPM fix
   - userq fixes
   - amdgpu_vm_get_task_info_pasid lifetime fix
   - DC CACP support
   - change system_unbound_wq with system_dfl_wq
   - Loosen VFCT bios parsing to deal with pci=realloc
   - SI/SMU7 AC/DC switch fix
   - VM fence handling fix
   - GEM close optimisation
   - Apple Studio Display fixes
   - DC FRL fixes

  amdkfd:
   - initial compute pipe reset support
   - allow applications to opt out of sigbus on fatal errors
   - improve CRIU boundary checks
   - MQD handling rework
   - move TBA/TMA from system to device memory
   - avoid topology-lock in kfd_mmap
   - SVM eviction fixes

  radeon:
   - fix unset CONFIG_ACPI build

  i915:
   - Novalake (NVL display version 35) timing generator enabling
   - NVL DC3CO enabling
   - enable UBHR link rates on thunderbolt tunnels
   - Reduce Xe3+ PM demand peak bandwidth
   - enable pipe DMC error interrupts for display 30+
   - add kunit tests for DP link config selection
   - refactor and document DP link recovery
   - i915/xe driver display probe/remove/suspend/resume/shutdown cleanup
     and unification
   - i915/xe display runtime PM unified
   - Break i915 and xe panic dependency on struct intel_framebuffer
   - Streamline Pre/Post-CSC LUT loops
   - drop TGL DC3DO support
   - CDCLK santization
   - fix HDMI scrambling enable
   - fix phys bo pread/pwrite with offset
   - add missing nospec on parallel submit slot
   - fix some NULL derefs

  xe:
   - drop force_execlist module param
   - gate observation streams with perf_allow_cpu
   - skip FORCE_WC and vm_bound check for external dma-bufs
   - dmemcg eviction support
   - remove unused NVL-S GuC
   - TLB invalidation improvements
   - NVL-S updated PCI-IDs and w/a
   - madvise: optimise invalidation path
   - fix infinite gt-reset loop in timeout recovery
   - update TTM device benefical_order
   - wait on external BO kernel fences in exec ioctl
   - add/use more KLV helpers
   - sriov: disable display in admin only PF mode
   - add RAS GPU health indicator
   - optimise TTM populate for DONTNEED BO
   - drop force_probe for NVL-s
   - add debugfs for pcode info

  amdxdna:
   - disable device buffer export

  nova:
   - build nova-core/nova-drm from drivers/gpu
   - export nova-core rust symbols (workaround)
   - GSP boot process consolidation
   - Boot GSP with vGPU enabled
   - TLV firmware image format support
   - Hopper/Blackwell fixes and cleanups
   - I/O projection adoption

  tyr:
   - firmware loading and MCU boot
   - add generic slot manager + MMU
   - GPU VM support ARM64 LPAE page tables
   - add kernel buffer object for internal allocations
   - add parser for Mali CSF
   - add MCU booting

  nouveau:
   - race fixes
   - check instmem iomapping at first use
   - add dmemcg support
   - expose NVDEC channels
   - add scanline position/head state support for GSP

  qxl:
   - convert simple encoder to regular

  ethosu:
   - add perf counter support

  etnaviv:
   - force flush on power register ops

  msm:
   - support DSC configuration with slice_per_pkt &gt; 1

  mxsfb:
   - fix disable sequence

  panthor:
   - support sparse mappings

  rockchip:
   - switch away from simple helpers
   - support YUV background color
   - fix layer config timeout
   - add edp support for rk3576
   - add batch command submission function

  rocket:
   - error handling and NULL ptr deref fixes

  sun4i:
   - switch away from simple helpers

  imagination:
   - mark BXM-4-64 MC1 as support

  host1x:
   - support tegra264

  tegra:
   - add DSI for tegra 20/30

  v3d:
   - reduce PM runtime autosuspend delay
   - scheduler fixes and refactoring
   - deprecate v3d 3.3 and 4.1
   - validate CPU job query boundaries

  hibmc:
   - improve plane format handling
   - switch to gem shmem

  mediatek:
   - cec: correct compat for mt7623-8167?

  exynos:
   - remove simple dependency
   - add error handling to encoder paths
   - take i2c adapter module reference"

* tag 'drm-next-2026-08-20' of https://gitlab.freedesktop.org/drm/kernel: (2074 commits)
  drm/xe/mcr: Take vcs1/vecs1 into account for first media slice
  drm/xe: Fix a bug in pc_adjust_freq_bounds()
  drm/xe: Fix xe_device_probe() failure
  drm/xe/drm_ras: Move has_drm_ras check to drm_ras layer
  drm/xe/ras: Fix boot-time ras error processing
  drm/amd/display: make DC_RUN_WITH_PREEMPTION_ENABLED misuse a build error
  drm/amd/pm: silence uninitialized variable warnings
  drm/amdgpu: skip BOs being torn down during GTT recovery
  drm/amdgpu: Reject UVD message with invalid number of h265 refs
  drm/amdgpu: keep PRT mappings off the vm_bo state lists
  drm/amdgpu: fix nbif 6.3.1 l1 low power not functional
  drm/amd/display: fix BT.2020 YCbCr output CSC matrices for DCE
  drm/amd/display: fix BT.2020 YCbCr limited output CSC matrix
  drm/amdgpu: Implement insert_end for VCE 3
  drm/amdgpu: Fix UVD min buffer sizes
  drm/amdgpu: Fix UVD decode image min size calculation
  drm/amdgpu: Fix UVD dpb min size calculation for H264
  drm/amdgpu: Reject UVD message with dimensions above 4096
  drm/amdgpu: check ASPM on the dGPU host link
  drm/radeon: fix autosuspend cleanup during teardown
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull drm updates from Dave Airlie:
 "Highlights:

   - dmemcg eviction support is good for low VRAM things like Steam
     Machine

   - AMD adds gfx6-8 modifier support for older GPUs that enables a
     bunch of wayland stuff

   - i915/xe has some new hw support but also a lot of display
     refactoring

  Everything:

  perf:
   - export perf_allow_ APIs for xe

  udmabuf:
   - remove default size limit of 64MB

  rust:
   - i/o rework (signed tag from driver-core tree)
   - add registration guard and registration data
   - fix unbounded lifetimes in ioctl handler args
   - fix a drm_dev_register race
   - gem_shmem: add DmaResvGuard helper
   - gpuvm: require send/sync for driver data
       - implement send/sync for GpuVaAlloc and GpuVmBo
       - add SmContext lifetime
   - rename dma_handle to dma_address
   - change pci_sriov_get_totalvfs return to unsigned int

  core:
   - create drm_of_get_panel_orientation
   - send per-connector hotplug events
   - add thunderbolt UBHR tunneling support

  connector:
   - add color format property

  dmem:
   - introduce a peak file
   - accept one region per limit
   - add dmemcg support for eviction

  gpusvm:
   - reorg code to give drivers more flexibility

  atomic:
   - add create_state callback and helper
   - add documentation on atomic commit lifetime

  buddy:
   - add per-order free
   - add used block scoreboard
   - fix UAF
   - test buffer clearance on resume
   - add phys_addr-&gt;block helper

  gem:
   - drop DRIVER_GEM_GPUVA flag

  ttm:
   - be more aggressive allocating below protection limit

  sched:
   - add test suite for concurrent job submissions

  hdmi:
   - hook the color format property in helpers

  mipi-dsi:
   - add MIPI_DSI_MODE_DSC_ALL_SLICES_IN_PKT

  bridge:
   - add atomic create callbacks
   - drop atomic reset
   - display-connector: don't autoenable HPD IRQ
   - trigger initial HPD for DP
   - ti-sn65dsi83: remove NO_HFP and NO_HBP mode flags
   - analogix_dp: switch to DP link training helpers

  dp:
   - add support for DSC max delta BPP

  edid:
   - parse panel type from DisplayID 2.x Display Parameters

  sysfb:
   - improve panel, stride, framebuffer size validation

  panel:
   - implement ref counting for struct drm_panel
   - himax-hx83121a: add backlight regulator support
   - novatek-nt36672a: Inline panel init sequences
   - visionox-vtdr6130: enable DSC
   - novatek-nt37801: Use mipi_dsi_*_multi() functions
   - samsung-s6d16d0: Fix prepare error handling
   - support Novatek NT36536 plus DT bindings
   - sofef00: fix backlight updates
   - osd101t2587: use mipi_dsi_*_multi interface
   - panel-edp: adjust timing for AUO displays
   - panel-lvds: support Opto Logic SCX1001511GGC49
   - panel-simple: support Kyocera tcg070wvlq
   - panel-edp: quirks
       - AUO B116XAT04.3, CMN N116BCP-EA2, CSW MNB601LS1-8
       - BOE NV116WH2-M30, BOE NT116WHM-N21, BOE NV116FH1-M31
       - BOE NV116FH1-M30, NV140FHM-N5B, TM156VDXP25
       - BOE NE160QDM-NY1, MB116AS01
   - new:
       - Samsung ATNA40HQ08-0, Anbernic TD4310
       - Chipone ICNA35XX, Ilitek ILI9488
       - Ilitek ILI7807S, Renesas R63419
       - MNE001BS6-2, MNF601BS4-1, Sharp LQ120P1JX51

  virtio:
   - add support for save/restore virtio_gpu_objects
   - abort vq wait on device removal

  amdgpu:
   - add color format DRM property
   - initial compute pipe reset support
   - add GFX 6-8 modifier support
   - initial DCN 6.0.0 support
   - dmemcg eviction support
   - improved boundary checking for bios parsing
   - RAS updates and rework
   - VCN secure submission fixes
   - 8K panel fix
   - Display KUNIT tests
   - parse panel type from DisplayID
   - Align IP discovery to pci device lifetime
   - SOC15 register macro cleanups
   - UVD memory placement fixes
   - GFX9 mode2 reset fixes
   - drop unnecessary BUG/BUG_ON
   - GFX8 soft reset rework
   - enable soft reset on GFX8
   - PSP/SMU 15.0.9 update
   - VI ASPM fix
   - userq fixes
   - amdgpu_vm_get_task_info_pasid lifetime fix
   - DC CACP support
   - change system_unbound_wq with system_dfl_wq
   - Loosen VFCT bios parsing to deal with pci=realloc
   - SI/SMU7 AC/DC switch fix
   - VM fence handling fix
   - GEM close optimisation
   - Apple Studio Display fixes
   - DC FRL fixes

  amdkfd:
   - initial compute pipe reset support
   - allow applications to opt out of sigbus on fatal errors
   - improve CRIU boundary checks
   - MQD handling rework
   - move TBA/TMA from system to device memory
   - avoid topology-lock in kfd_mmap
   - SVM eviction fixes

  radeon:
   - fix unset CONFIG_ACPI build

  i915:
   - Novalake (NVL display version 35) timing generator enabling
   - NVL DC3CO enabling
   - enable UBHR link rates on thunderbolt tunnels
   - Reduce Xe3+ PM demand peak bandwidth
   - enable pipe DMC error interrupts for display 30+
   - add kunit tests for DP link config selection
   - refactor and document DP link recovery
   - i915/xe driver display probe/remove/suspend/resume/shutdown cleanup
     and unification
   - i915/xe display runtime PM unified
   - Break i915 and xe panic dependency on struct intel_framebuffer
   - Streamline Pre/Post-CSC LUT loops
   - drop TGL DC3DO support
   - CDCLK santization
   - fix HDMI scrambling enable
   - fix phys bo pread/pwrite with offset
   - add missing nospec on parallel submit slot
   - fix some NULL derefs

  xe:
   - drop force_execlist module param
   - gate observation streams with perf_allow_cpu
   - skip FORCE_WC and vm_bound check for external dma-bufs
   - dmemcg eviction support
   - remove unused NVL-S GuC
   - TLB invalidation improvements
   - NVL-S updated PCI-IDs and w/a
   - madvise: optimise invalidation path
   - fix infinite gt-reset loop in timeout recovery
   - update TTM device benefical_order
   - wait on external BO kernel fences in exec ioctl
   - add/use more KLV helpers
   - sriov: disable display in admin only PF mode
   - add RAS GPU health indicator
   - optimise TTM populate for DONTNEED BO
   - drop force_probe for NVL-s
   - add debugfs for pcode info

  amdxdna:
   - disable device buffer export

  nova:
   - build nova-core/nova-drm from drivers/gpu
   - export nova-core rust symbols (workaround)
   - GSP boot process consolidation
   - Boot GSP with vGPU enabled
   - TLV firmware image format support
   - Hopper/Blackwell fixes and cleanups
   - I/O projection adoption

  tyr:
   - firmware loading and MCU boot
   - add generic slot manager + MMU
   - GPU VM support ARM64 LPAE page tables
   - add kernel buffer object for internal allocations
   - add parser for Mali CSF
   - add MCU booting

  nouveau:
   - race fixes
   - check instmem iomapping at first use
   - add dmemcg support
   - expose NVDEC channels
   - add scanline position/head state support for GSP

  qxl:
   - convert simple encoder to regular

  ethosu:
   - add perf counter support

  etnaviv:
   - force flush on power register ops

  msm:
   - support DSC configuration with slice_per_pkt &gt; 1

  mxsfb:
   - fix disable sequence

  panthor:
   - support sparse mappings

  rockchip:
   - switch away from simple helpers
   - support YUV background color
   - fix layer config timeout
   - add edp support for rk3576
   - add batch command submission function

  rocket:
   - error handling and NULL ptr deref fixes

  sun4i:
   - switch away from simple helpers

  imagination:
   - mark BXM-4-64 MC1 as support

  host1x:
   - support tegra264

  tegra:
   - add DSI for tegra 20/30

  v3d:
   - reduce PM runtime autosuspend delay
   - scheduler fixes and refactoring
   - deprecate v3d 3.3 and 4.1
   - validate CPU job query boundaries

  hibmc:
   - improve plane format handling
   - switch to gem shmem

  mediatek:
   - cec: correct compat for mt7623-8167?

  exynos:
   - remove simple dependency
   - add error handling to encoder paths
   - take i2c adapter module reference"

* tag 'drm-next-2026-08-20' of https://gitlab.freedesktop.org/drm/kernel: (2074 commits)
  drm/xe/mcr: Take vcs1/vecs1 into account for first media slice
  drm/xe: Fix a bug in pc_adjust_freq_bounds()
  drm/xe: Fix xe_device_probe() failure
  drm/xe/drm_ras: Move has_drm_ras check to drm_ras layer
  drm/xe/ras: Fix boot-time ras error processing
  drm/amd/display: make DC_RUN_WITH_PREEMPTION_ENABLED misuse a build error
  drm/amd/pm: silence uninitialized variable warnings
  drm/amdgpu: skip BOs being torn down during GTT recovery
  drm/amdgpu: Reject UVD message with invalid number of h265 refs
  drm/amdgpu: keep PRT mappings off the vm_bo state lists
  drm/amdgpu: fix nbif 6.3.1 l1 low power not functional
  drm/amd/display: fix BT.2020 YCbCr output CSC matrices for DCE
  drm/amd/display: fix BT.2020 YCbCr limited output CSC matrix
  drm/amdgpu: Implement insert_end for VCE 3
  drm/amdgpu: Fix UVD min buffer sizes
  drm/amdgpu: Fix UVD decode image min size calculation
  drm/amdgpu: Fix UVD dpb min size calculation for H264
  drm/amdgpu: Reject UVD message with dimensions above 4096
  drm/amdgpu: check ASPM on the dGPU host link
  drm/radeon: fix autosuspend cleanup during teardown
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core</title>
<updated>2026-08-19T17:42:18+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2026-08-19T17:42:18+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=59e6295fac26b8e85c1ea859cdd89fa1e47519d7'/>
<id>59e6295fac26b8e85c1ea859cdd89fa1e47519d7</id>
<content type='text'>
Pull driver core updates from Danilo Krummrich:
 "container_of:

   - Apply typeof_member(), remove the local __mptr variable to
     eliminate variable shadowing warnings on nested container_of()
     calls, and remove unnecessary parentheses

  core:

   - Add driver name to probe debug print for initcall_debug

   - Avoid repeatedly printing the same 'Fixed dependency cycle' log

   - Unwind device_add() on attribute creation failure in
     attribute_container_add_class_device()

   - Remove statistics group if encryption group creation fails in
     transport_add_class_device()

  debugfs:

   - Fix lockdown check for mmap_prepare()

   - Warn if file creation failed due to uninitialized debugfs

  device property:

   - Implement fw_devlink support for software nodes by adding
     software_node_add_links(), which creates fwnode links from
     DEV_PROP_REF properties to enable automatic probe ordering. Add
     kunit-managed fwnode helpers and test coverage

   - Fix infinite loop in fwnode_for_each_child_node() when the
     secondary fwnode has more than one child. Add test cases

   - Fix out-of-bounds access in software_node_get_reference_args() when
     called with index -1 (UINT_MAX)

   - Refactor to use RAII approach with __free()

   - Add Bartosz Golaszewski as software node reviewer

  firmware loader:

   - Fix race where a sysfs fallback request can complete before being
     queued as pending, leading to a use-after-free on the next fallback
     request

   - Reject 0-size built-in firmware and fail the build on empty
     firmware files in CONFIG_EXTRA_FIRMWARE

  kobject:

   - Provide __KOBJ_ATTR() and __KOBJ_ATTR_RO/WO() initialization macros
     and allow the constification of kobject attributes, enabling them
     to reside in read-only memory

  platform:

   - Provide platform_device_set_of_node(), platform_device_set_fwnode(),
     and platform_device_set_of_node_from_dev() helpers that encapsulate
     firmware node reference counting for dynamically allocated platform
     devices

     Convert all in-tree users that manually assigned dev.of_node or
     dev.fwnode, fixing a pre-existing refcount bug in powermac. Switch
     to counting references of all firmware node types, not only OF
     nodes

   - Unify the release path for dynamically allocated platform devices
     by removing platform_device_release_full(). Amend the fwnode setter
     API contract to warn if a primary software node is overwritten. Add
     KUnit tests for correct software node removal on device
     unregistration

  Rust:

   - Auxiliary:
       - Add registration_data_with() closure-based API for invariant
         ForLt types

   - Debugfs:
       - Migrate BinaryWriter and BinaryReaderMut trait requirements
         from kernel::transmute traits to zerocopy traits

   - Device:
       - Add BoundInternal device context and InternalBoundContext trait
         for bus abstractions that need internal access to a bound
         device.
       - Make the lifetime on Core and CoreInternal invariant to prevent
         coercion to shorter lifetimes

   - Devres:
       - Fix race between concurrent revokers where the losing revoker
         could return before the winning revoker finished dropping the
         inner data, causing use-after-free.
       - Ensure revocation is complete before the device finishes
         unbinding by making the synchronization bidirectional.
       - Add DevresLt&lt;F: ForLt&gt;, a wrapper around Devres that shortens
         'static back to the caller's borrow scope. Implement ForLt and
         CovariantForLt for Bar, IoMem, and ExclusiveIoMem

   - Driver:
       - Switch from index-based to pointer-based device ID info lookup,
         storing static references in driver_data. Centralize device ID
         handling in device_id.rs, removing the open-coded ACPI/OF
         matching logic and duplicate ID table from driver.rs

   - I/O:
       - Make I/O regions typed (with a dynamically-sized Region type
         for the existing untyped case), create view types representing
         subregions of a mapped I/O region, and add io_project!() for
         safely creating subviews.
       - Split Io into a base trait (IoBase) and an extension trait (Io)
         with a blanket implementation, preventing implementers from
         overriding provided methods that unsafe code relies on.
       - Add a SysMem backend for shared system memory with volatile
         access, and make Coherent implement Io via an I/O view type.
         Add IoSysMap as sum type of Mmio and SysMem. Add copying
         methods (memcpy_{from,to}io()) and read_val()/write_val() for
         typed access.
       - Replace dma_read!()/dma_write!() with io_read!()/io_write!()
         for primitives and copying methods for aggregates; drop the old
         macros. Convert nova-core to use I/O projection.
       - Fix internal shortcut rule dispatch in the register!() macro,
         remove unused rule arguments, and use path fragments for alias
         destinations

   - IRQ:
       - Make irq::Registration compatible with lifetime-bound drivers
         by removing the 'static bound on Handler/ThreadedHandler and
         replacing Devres&lt;RegistrationInner&gt; with direct
         request_irq()/free_irq() calls. Handlers can now directly own
         lifetime-bound device resources

   - PCI:
       - Convert IrqVectorRegistration to a lifetime-annotated owning
         type, giving drivers explicit control over the allocation
         lifetime. IrqVector embeds a resolved IrqRequest, making the
         conversion infallible. Remove the redundant
         request_irq()/request_threaded_irq() wrappers from pci::Device.
       - Add pci_irq_type() C helper and expose it via irq_type() on
         IrqVectorRegistration and IrqVector, returning PCI_IRQ_MSIX,
         PCI_IRQ_MSI, or PCI_IRQ_INTX.
       - Mark pci::Device refcount methods inline

   - Serdev:
       - Add Rust abstractions for the serial device bus, including
         serdev::Driver trait, serdev::Device wrapping struct
         serdev_device, and serdev::Adapter implementing
         RegistrationOps. Includes a sample driver. Markus Probst takes
         over as serdev maintainer for both C and Rust code

   - Misc:
       - Split ForLt into a base trait (providing the Of&lt;'a&gt; GAT) and an
         unsafe CovariantForLt subtrait guaranteeing covariance,
         enabling invariant types (e.g. those containing Mutex&lt;&amp;'bound T&gt;)
         to participate in the ForLt abstraction.
       - Fix Coherent read past EOF returning -ERANGE instead of zero.
       - Fix firmware example UB by avoiding null-pointer ARef

  misc:
   - Avoid iattr allocation in kernfs listxattr by using
     kernfs_iattrs_noalloc().
   - Unregister SoC bus on early device registration failure.
   - Remove unused DMA_FENCE_TRACE Kconfig symbol.
   - Fix /sys/module path in comment.
   - Refactor ISA bus init to remove nested blocks.
   - Remove redundant nodemask clears in numa_init().
   - Add kernel-doc for fwnode_operations and sys_soc.h, mark
     internal property data as private for kernel-doc, and add
     property.h/fwnode.h to driver-api infrastructure docs.
   - Add MAINTAINERS entry for sys_soc.h"

* tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (129 commits)
  rust: pci: expose the allocated interrupt type
  PCI: Add pci_irq_type() to query the allocated interrupt type
  rust: pci: remove request_irq() and request_threaded_irq() from Device
  rust: pci: resolve IRQ in index() and embed IrqRequest in IrqVector
  rust: pci: convert IrqVectorRegistration to a lifetime-managed owning type
  kernfs: avoid iattr allocation in listxattr
  rust: serdev: use ThisModule::as_ptr() instead of field access
  ACPI/IORT: use platform_device_set_fwnode()
  ACPI/APMT: use platform_device_set_fwnode()
  firmware_loader: do not queue completed sysfs fallback requests
  rust: pci: Mark Device refcount methods inline
  rust: irq: make Registration compatible with lifetime-bound drivers
  rust: net/phy: remove expansion from doc
  rust: dma: return zero for Coherent reads past EOF
  rust: io: register: use path fragment for alias destination
  rust: io: register: remove unused rule arguments
  rust: io: register: dispatch shortcut rules internally
  MAINTAINERS: add sys_soc.h to DRIVER CORE
  rust: debugfs: remove unsafe blocks from traits impl for Vec
  rust: debugfs: migrate debugfs traits requirements to zerocopy
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull driver core updates from Danilo Krummrich:
 "container_of:

   - Apply typeof_member(), remove the local __mptr variable to
     eliminate variable shadowing warnings on nested container_of()
     calls, and remove unnecessary parentheses

  core:

   - Add driver name to probe debug print for initcall_debug

   - Avoid repeatedly printing the same 'Fixed dependency cycle' log

   - Unwind device_add() on attribute creation failure in
     attribute_container_add_class_device()

   - Remove statistics group if encryption group creation fails in
     transport_add_class_device()

  debugfs:

   - Fix lockdown check for mmap_prepare()

   - Warn if file creation failed due to uninitialized debugfs

  device property:

   - Implement fw_devlink support for software nodes by adding
     software_node_add_links(), which creates fwnode links from
     DEV_PROP_REF properties to enable automatic probe ordering. Add
     kunit-managed fwnode helpers and test coverage

   - Fix infinite loop in fwnode_for_each_child_node() when the
     secondary fwnode has more than one child. Add test cases

   - Fix out-of-bounds access in software_node_get_reference_args() when
     called with index -1 (UINT_MAX)

   - Refactor to use RAII approach with __free()

   - Add Bartosz Golaszewski as software node reviewer

  firmware loader:

   - Fix race where a sysfs fallback request can complete before being
     queued as pending, leading to a use-after-free on the next fallback
     request

   - Reject 0-size built-in firmware and fail the build on empty
     firmware files in CONFIG_EXTRA_FIRMWARE

  kobject:

   - Provide __KOBJ_ATTR() and __KOBJ_ATTR_RO/WO() initialization macros
     and allow the constification of kobject attributes, enabling them
     to reside in read-only memory

  platform:

   - Provide platform_device_set_of_node(), platform_device_set_fwnode(),
     and platform_device_set_of_node_from_dev() helpers that encapsulate
     firmware node reference counting for dynamically allocated platform
     devices

     Convert all in-tree users that manually assigned dev.of_node or
     dev.fwnode, fixing a pre-existing refcount bug in powermac. Switch
     to counting references of all firmware node types, not only OF
     nodes

   - Unify the release path for dynamically allocated platform devices
     by removing platform_device_release_full(). Amend the fwnode setter
     API contract to warn if a primary software node is overwritten. Add
     KUnit tests for correct software node removal on device
     unregistration

  Rust:

   - Auxiliary:
       - Add registration_data_with() closure-based API for invariant
         ForLt types

   - Debugfs:
       - Migrate BinaryWriter and BinaryReaderMut trait requirements
         from kernel::transmute traits to zerocopy traits

   - Device:
       - Add BoundInternal device context and InternalBoundContext trait
         for bus abstractions that need internal access to a bound
         device.
       - Make the lifetime on Core and CoreInternal invariant to prevent
         coercion to shorter lifetimes

   - Devres:
       - Fix race between concurrent revokers where the losing revoker
         could return before the winning revoker finished dropping the
         inner data, causing use-after-free.
       - Ensure revocation is complete before the device finishes
         unbinding by making the synchronization bidirectional.
       - Add DevresLt&lt;F: ForLt&gt;, a wrapper around Devres that shortens
         'static back to the caller's borrow scope. Implement ForLt and
         CovariantForLt for Bar, IoMem, and ExclusiveIoMem

   - Driver:
       - Switch from index-based to pointer-based device ID info lookup,
         storing static references in driver_data. Centralize device ID
         handling in device_id.rs, removing the open-coded ACPI/OF
         matching logic and duplicate ID table from driver.rs

   - I/O:
       - Make I/O regions typed (with a dynamically-sized Region type
         for the existing untyped case), create view types representing
         subregions of a mapped I/O region, and add io_project!() for
         safely creating subviews.
       - Split Io into a base trait (IoBase) and an extension trait (Io)
         with a blanket implementation, preventing implementers from
         overriding provided methods that unsafe code relies on.
       - Add a SysMem backend for shared system memory with volatile
         access, and make Coherent implement Io via an I/O view type.
         Add IoSysMap as sum type of Mmio and SysMem. Add copying
         methods (memcpy_{from,to}io()) and read_val()/write_val() for
         typed access.
       - Replace dma_read!()/dma_write!() with io_read!()/io_write!()
         for primitives and copying methods for aggregates; drop the old
         macros. Convert nova-core to use I/O projection.
       - Fix internal shortcut rule dispatch in the register!() macro,
         remove unused rule arguments, and use path fragments for alias
         destinations

   - IRQ:
       - Make irq::Registration compatible with lifetime-bound drivers
         by removing the 'static bound on Handler/ThreadedHandler and
         replacing Devres&lt;RegistrationInner&gt; with direct
         request_irq()/free_irq() calls. Handlers can now directly own
         lifetime-bound device resources

   - PCI:
       - Convert IrqVectorRegistration to a lifetime-annotated owning
         type, giving drivers explicit control over the allocation
         lifetime. IrqVector embeds a resolved IrqRequest, making the
         conversion infallible. Remove the redundant
         request_irq()/request_threaded_irq() wrappers from pci::Device.
       - Add pci_irq_type() C helper and expose it via irq_type() on
         IrqVectorRegistration and IrqVector, returning PCI_IRQ_MSIX,
         PCI_IRQ_MSI, or PCI_IRQ_INTX.
       - Mark pci::Device refcount methods inline

   - Serdev:
       - Add Rust abstractions for the serial device bus, including
         serdev::Driver trait, serdev::Device wrapping struct
         serdev_device, and serdev::Adapter implementing
         RegistrationOps. Includes a sample driver. Markus Probst takes
         over as serdev maintainer for both C and Rust code

   - Misc:
       - Split ForLt into a base trait (providing the Of&lt;'a&gt; GAT) and an
         unsafe CovariantForLt subtrait guaranteeing covariance,
         enabling invariant types (e.g. those containing Mutex&lt;&amp;'bound T&gt;)
         to participate in the ForLt abstraction.
       - Fix Coherent read past EOF returning -ERANGE instead of zero.
       - Fix firmware example UB by avoiding null-pointer ARef

  misc:
   - Avoid iattr allocation in kernfs listxattr by using
     kernfs_iattrs_noalloc().
   - Unregister SoC bus on early device registration failure.
   - Remove unused DMA_FENCE_TRACE Kconfig symbol.
   - Fix /sys/module path in comment.
   - Refactor ISA bus init to remove nested blocks.
   - Remove redundant nodemask clears in numa_init().
   - Add kernel-doc for fwnode_operations and sys_soc.h, mark
     internal property data as private for kernel-doc, and add
     property.h/fwnode.h to driver-api infrastructure docs.
   - Add MAINTAINERS entry for sys_soc.h"

* tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (129 commits)
  rust: pci: expose the allocated interrupt type
  PCI: Add pci_irq_type() to query the allocated interrupt type
  rust: pci: remove request_irq() and request_threaded_irq() from Device
  rust: pci: resolve IRQ in index() and embed IrqRequest in IrqVector
  rust: pci: convert IrqVectorRegistration to a lifetime-managed owning type
  kernfs: avoid iattr allocation in listxattr
  rust: serdev: use ThisModule::as_ptr() instead of field access
  ACPI/IORT: use platform_device_set_fwnode()
  ACPI/APMT: use platform_device_set_fwnode()
  firmware_loader: do not queue completed sysfs fallback requests
  rust: pci: Mark Device refcount methods inline
  rust: irq: make Registration compatible with lifetime-bound drivers
  rust: net/phy: remove expansion from doc
  rust: dma: return zero for Coherent reads past EOF
  rust: io: register: use path fragment for alias destination
  rust: io: register: remove unused rule arguments
  rust: io: register: dispatch shortcut rules internally
  MAINTAINERS: add sys_soc.h to DRIVER CORE
  rust: debugfs: remove unsafe blocks from traits impl for Vec
  rust: debugfs: migrate debugfs traits requirements to zerocopy
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>rust: dma: rename dma_handle to dma_address</title>
<updated>2026-08-06T20:54:39+00:00</updated>
<author>
<name>Alexandre Courbot</name>
<email>acourbot@nvidia.com</email>
</author>
<published>2026-08-05T05:01:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=91645a52ebf2e22f0bd37c142b79238617d38758'/>
<id>91645a52ebf2e22f0bd37c142b79238617d38758</id>
<content type='text'>
The `dma_handle` naming is inherited from the C API, but what this
really describes is the device DMA address; everything named
`dma_handle` is actually a `dma_addr_t`.

This naming introduces some confusion on the Rust API side, as handles
are supposed to be opaque tokens, yet we were doing address computation
on values returned by `dma_handle`.

Rename `dma_handle` to `dma_address` while nova-core is still its only
user.

Suggested-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Suggested-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Link: https://lore.kernel.org/all/DK75LUA4NLGI.3P29AIZQE20V2@kernel.org/
Signed-off-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Reviewed-by: Robin Murphy &lt;robin.murphy@arm.com&gt;
Link: https://patch.msgid.link/20260805-falcon-dma-projections-v2-2-4cc9f3f13ee9@nvidia.com
[ Rebase and fix up build failures due to newly introduced dma_handle()
  calls. - Danilo ]
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The `dma_handle` naming is inherited from the C API, but what this
really describes is the device DMA address; everything named
`dma_handle` is actually a `dma_addr_t`.

This naming introduces some confusion on the Rust API side, as handles
are supposed to be opaque tokens, yet we were doing address computation
on values returned by `dma_handle`.

Rename `dma_handle` to `dma_address` while nova-core is still its only
user.

Suggested-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Suggested-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Link: https://lore.kernel.org/all/DK75LUA4NLGI.3P29AIZQE20V2@kernel.org/
Signed-off-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Reviewed-by: Robin Murphy &lt;robin.murphy@arm.com&gt;
Link: https://patch.msgid.link/20260805-falcon-dma-projections-v2-2-4cc9f3f13ee9@nvidia.com
[ Rebase and fix up build failures due to newly introduced dma_handle()
  calls. - Danilo ]
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>rust: treewide: replace `__pinned_init` with `raw_[try_]init`</title>
<updated>2026-08-05T10:36:18+00:00</updated>
<author>
<name>Gary Guo</name>
<email>gary@garyguo.net</email>
</author>
<published>2026-07-29T15:38:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ea7da3116015de801840f3e011dee907fb118f0c'/>
<id>ea7da3116015de801840f3e011dee907fb118f0c</id>
<content type='text'>
The `__init` method is not designed to be a public API (existence of "__"
is a hint for this); replace users with `pin_init::raw_[try_]init` which
does the same thing.

There are a few users of `__init` which are replaced as well.

Acked-by: Miguel Ojeda &lt;ojeda@kernel.org&gt;
Acked-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Link: https://patch.msgid.link/20260729-merge-init-v2-4-26adf47109e7@garyguo.net
Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The `__init` method is not designed to be a public API (existence of "__"
is a hint for this); replace users with `pin_init::raw_[try_]init` which
does the same thing.

There are a few users of `__init` which are replaced as well.

Acked-by: Miguel Ojeda &lt;ojeda@kernel.org&gt;
Acked-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Link: https://patch.msgid.link/20260729-merge-init-v2-4-26adf47109e7@garyguo.net
Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>rust: dma: return zero for Coherent reads past EOF</title>
<updated>2026-08-03T20:48:03+00:00</updated>
<author>
<name>Younes Akhouayri</name>
<email>git@younes.io</email>
</author>
<published>2026-07-30T16:34:38+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=5391b147d9fd8d4736e28c629cda00fd37c2304a'/>
<id>5391b147d9fd8d4736e28c629cda00fd37c2304a</id>
<content type='text'>
Coherent&lt;T&gt;::write_to_slice() calculates a zero-byte copy when the file
offset is beyond the allocation, but still calls
UserSliceWriter::write_dma(). The latter rejects offsets beyond the
allocation even when the copy length is zero, so a debugfs read past EOF
returns -ERANGE.

Return before calling write_dma() when the offset is at or beyond the
allocation, matching simple_read_from_buffer() EOF semantics.

Fixes: 016818513936 ("rust: dma: implement BinaryWriter for Coherent&lt;[u8]&gt;")
Cc: stable@vger.kernel.org
Link: https://rust-for-linux.zulipchat.com/#narrow/channel/291566-Library/topic/.E2.9C.94.20Possible.20past-EOF.20bug.20in.20Coherent.3CT.3E.3A.3Awrite_to_slice/near/611677095
Signed-off-by: Younes Akhouayri &lt;git@younes.io&gt;
Reviewed-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Reviewed-by: Onur Özkan &lt;work@onurozkan.dev&gt;
Link: https://patch.msgid.link/20260730-fix-dma-coherent-eof-v2-1-8aff21054afa@younes.io
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Coherent&lt;T&gt;::write_to_slice() calculates a zero-byte copy when the file
offset is beyond the allocation, but still calls
UserSliceWriter::write_dma(). The latter rejects offsets beyond the
allocation even when the copy length is zero, so a debugfs read past EOF
returns -ERANGE.

Return before calling write_dma() when the offset is at or beyond the
allocation, matching simple_read_from_buffer() EOF semantics.

Fixes: 016818513936 ("rust: dma: implement BinaryWriter for Coherent&lt;[u8]&gt;")
Cc: stable@vger.kernel.org
Link: https://rust-for-linux.zulipchat.com/#narrow/channel/291566-Library/topic/.E2.9C.94.20Possible.20past-EOF.20bug.20in.20Coherent.3CT.3E.3A.3Awrite_to_slice/near/611677095
Signed-off-by: Younes Akhouayri &lt;git@younes.io&gt;
Reviewed-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Reviewed-by: Onur Özkan &lt;work@onurozkan.dev&gt;
Link: https://patch.msgid.link/20260730-fix-dma-coherent-eof-v2-1-8aff21054afa@younes.io
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>rust: io: add copying methods</title>
<updated>2026-07-11T16:09:04+00:00</updated>
<author>
<name>Gary Guo</name>
<email>gary@garyguo.net</email>
</author>
<published>2026-07-06T12:44:32+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=e7219e53c525db87b43f4a9064d0e6331d7dc710'/>
<id>e7219e53c525db87b43f4a9064d0e6331d7dc710</id>
<content type='text'>
One feature that was lost from the old `dma_read!` and `dma_write!` when
moving to `io_read!` and `io_write!` was the ability to read/write a large
structs. However, the semantics was unclear to begin with, as there was no
guarantee about their atomicity even for structs that were small enough to
fit in u32. Re-introduce the capability in the form of copying methods.

    dma_read!(foo, bar) -&gt; io_project!(foo, bar).copy_read()
    dma_write!(foo, bar, baz) -&gt; io_project!(foo, bar).copy_write(baz)

Model these semantics after memcpy so user has clear expectation of lack of
atomicity. As an additional benefit of this change, this now works for MMIO
as well by mapping them to `memcpy_{from,to}io`.

For slices which is DST so the `copy_read` and `copy_write` API above can't
work, add `copy_from_slice` and `copy_to_slice` to copy from/to normal
memory.

Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
Reviewed-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Link: https://patch.msgid.link/20260706-io_projection-v6-19-72cd5d055d54@garyguo.net
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
One feature that was lost from the old `dma_read!` and `dma_write!` when
moving to `io_read!` and `io_write!` was the ability to read/write a large
structs. However, the semantics was unclear to begin with, as there was no
guarantee about their atomicity even for structs that were small enough to
fit in u32. Re-introduce the capability in the form of copying methods.

    dma_read!(foo, bar) -&gt; io_project!(foo, bar).copy_read()
    dma_write!(foo, bar, baz) -&gt; io_project!(foo, bar).copy_write(baz)

Model these semantics after memcpy so user has clear expectation of lack of
atomicity. As an additional benefit of this change, this now works for MMIO
as well by mapping them to `memcpy_{from,to}io`.

For slices which is DST so the `copy_read` and `copy_write` API above can't
work, add `copy_from_slice` and `copy_to_slice` to copy from/to normal
memory.

Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
Reviewed-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Link: https://patch.msgid.link/20260706-io_projection-v6-19-72cd5d055d54@garyguo.net
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>rust: dma: drop `dma_read!` and `dma_write!` API</title>
<updated>2026-07-11T16:09:04+00:00</updated>
<author>
<name>Gary Guo</name>
<email>gary@garyguo.net</email>
</author>
<published>2026-07-06T12:44:31+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=6ff7d69b7e6e0b09d53ffde472760f904ea5714f'/>
<id>6ff7d69b7e6e0b09d53ffde472760f904ea5714f</id>
<content type='text'>
The primitive read/write use case is covered by the `io_read!` and
`io_write!` macro. The non-primitive use case was finicky; they should
either be achieved using `CoherentBox` or `as_ref()/as_mut()` to assert the
lack of concurrent access, or should be using memcpy-like APIs to express
the non-atomic and tearable nature.

Reviewed-by: Andreas Hindborg &lt;a.hindborg@kernel.org&gt;
Reviewed-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
Reviewed-by: Daniel Almeida &lt;daniel.almeida@collabora.com&gt;
Link: https://patch.msgid.link/20260706-io_projection-v6-18-72cd5d055d54@garyguo.net
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The primitive read/write use case is covered by the `io_read!` and
`io_write!` macro. The non-primitive use case was finicky; they should
either be achieved using `CoherentBox` or `as_ref()/as_mut()` to assert the
lack of concurrent access, or should be using memcpy-like APIs to express
the non-atomic and tearable nature.

Reviewed-by: Andreas Hindborg &lt;a.hindborg@kernel.org&gt;
Reviewed-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
Reviewed-by: Daniel Almeida &lt;daniel.almeida@collabora.com&gt;
Link: https://patch.msgid.link/20260706-io_projection-v6-18-72cd5d055d54@garyguo.net
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>rust: io: implement a view type for `Coherent`</title>
<updated>2026-07-11T16:09:04+00:00</updated>
<author>
<name>Gary Guo</name>
<email>gary@garyguo.net</email>
</author>
<published>2026-07-06T12:44:28+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=1d409d1e7a874b3aeff8908292bc26ba4113cc06'/>
<id>1d409d1e7a874b3aeff8908292bc26ba4113cc06</id>
<content type='text'>
Implement a `CoherentView` type which is a view of `Coherent`. To be able
to give out DMA handles, the view type contains both CPU and DMA pointers,
and the projection method projects both at once.

Delegate most of the `Io` implementation to `SysMemBackend`. Provide a
method to erase the DMA handle and give out a `SysMem` view, if the user
does not need the `dma_handle`.

Reviewed-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
Reviewed-by: Daniel Almeida &lt;daniel.almeida@collabora.com&gt;
Link: https://patch.msgid.link/20260706-io_projection-v6-15-72cd5d055d54@garyguo.net
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Implement a `CoherentView` type which is a view of `Coherent`. To be able
to give out DMA handles, the view type contains both CPU and DMA pointers,
and the projection method projects both at once.

Delegate most of the `Io` implementation to `SysMemBackend`. Provide a
method to erase the DMA handle and give out a `SysMem` view, if the user
does not need the `dma_handle`.

Reviewed-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
Reviewed-by: Daniel Almeida &lt;daniel.almeida@collabora.com&gt;
Link: https://patch.msgid.link/20260706-io_projection-v6-15-72cd5d055d54@garyguo.net
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'driver-core-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core</title>
<updated>2026-06-15T07:11:17+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2026-06-15T07:11:17+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=36808d5e983985bbda87e01059cccc071fe3ec8d'/>
<id>36808d5e983985bbda87e01059cccc071fe3ec8d</id>
<content type='text'>
Pull driver core updates from Danilo Krummrich:
 "Deferred probe:
   - Fix race where deferred probe timeout work could be permanently
     canceled by using mod_delayed_work()
   - Fix missing jiffies conversion in deferred_probe_extend_timeout()
   - Guard timeout extension with delayed_work_pending() to prevent
     premature firing
   - Use system_percpu_wq instead of the deprecated system_wq
   - Update deferred_probe_timeout documentation

  device:
   - Replace direct struct device bitfield access (can_match, dma_iommu,
     dma_skip_sync, dma_ops_bypass, state_synced, dma_coherent,
     of_node_reused, offline, offline_disabled) with flag-based
     accessors using bit operations
   - Reject devices with unregistered buses
   - Delete unused DEVICE_ATTR_PREALLOC()
   - Add low-level device attribute macros with const show/store
     callbacks, allowing device attributes to reside in read-only memory
   - Move core device attributes to read-only memory
   - Constify group array pointers in driver_add_groups() /
     driver_remove_groups(), struct bus_type, and struct device_driver

  device property:
   - Fix fwnode reference leak in fwnode_graph_get_endpoint_by_id()
   - Initialize all fields of fwnode_handle in fwnode_init()
   - Provide swnode_get()/swnode_put() wrappers around kobject_get/put()
   - Allow passing struct software_node_ref_args pointers directly to
     PROPERTY_ENTRY_REF()

  driver_override:
   - Migrate amba, cdx, vmbus, and rpmsg to the generic driver_override
     infrastructure, fixing a UAF from unsynchronized access to
     driver_override in bus match() callbacks
   - Remove the now-unused driver_set_override()

  firmware loader:
   - Fix recursive lock deadlock in device_cache_fw_images() when async
     work falls back to synchronous execution
   - Fix device reference leak in firmware_upload_register()

  platform:
   - Pass KBUILD_MODNAME through the platform driver registration macro
     to create module symlinks in sysfs for built-in drivers; move
     module_kset initialization to a pure_initcall and tegra cbb
     registration to core_initcall to ensure correct ordering
   - Pass THIS_MODULE implicitly through a coresight_init_driver() macro

  sysfs:
   - Upgrade OOB write detection in sysfs_kf_seq_show() from printk to
     WARN
   - Add return value clamping to sysfs_kf_read()

  Rust:
   - ACPI:

     Fix missing match data for PRP0001 by exporting
     acpi_of_match_device()

   - Auxiliary:

     Replace drvdata() with dedicated registration data on
     auxiliary_device. drvdata() exposed the driver's bus device private
     data beyond the driver's own scope, creating ordering constraints
     and forcing the data to outlive all registrations that access it.
     Registration data is instead scoped structurally to the
     Registration object, making lifecycle ordering enforced by
     construction rather than convention.

   - Rust-native device driver lifetimes (HRT):

     Allow Rust device drivers to carry a lifetime parameter on their
     bus device private data, tied to the device binding scope -- the
     interval during which a bus device is bound to a driver. Device
     resources like pci::Bar&lt;'a&gt; and IoMem&lt;'a&gt; can be stored directly in
     the driver's bus device private data with a lifetime bounded by the
     binding scope, so the compiler enforces at build time that they do
     not outlive the binding. This removes Devres indirection from every
     access site and eliminates try_access() failure paths in
     destructors.

     Bus driver traits use a Generic Associated Type (GAT) Data&lt;'bound&gt;
     to introduce the lifetime on the private data, rather than
     parameterizing the Driver trait itself. Auxiliary registration
     data, where the lifetime is not introduced by a trait callback but
     must be threaded through Registration, uses the ForLt trait (a
     type-level abstraction for types generic over a lifetime).

  Misc:
   - Fix DT overlayed devices not probing by reverting the broken
     treewide overlay fix and re-running fw_devlink consumer pickup when
     an overlay is applied to a bound device
   - Use root_device_register() for faux bus root device; add sanity
     check for failed bus init
   - Fix dev_has_sync_state() data race with READ_ONCE() and move it to
     base.h
   - Avoid spurious device_links warning when removing a device while
     its supplier is unbinding
   - Switch ISA bus to dynamic root device
   - Fix suspicious RCU usage in kernfs_put()
   - Remove devcoredump exit callback
   - Constify devfreq_event_class"

* tag 'driver-core-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core: (81 commits)
  software node: allow passing reference args to PROPERTY_ENTRY_REF()
  driver core: platform: set mod_name in driver registration
  coresight: pass THIS_MODULE implicitly through a macro
  kernel: param: initialize module_kset in a pure_initcall
  soc/tegra: cbb: Move driver registration from pure_initcall to core_initcall
  firmware_loader: Fix recursive lock in device_cache_fw_images()
  driver core: Use system_percpu_wq instead of system_wq
  driver core: remove driver_set_override()
  rpmsg: use generic driver_override infrastructure
  Drivers: hv: vmbus: use generic driver_override infrastructure
  cdx: use generic driver_override infrastructure
  amba: use generic driver_override infrastructure
  rust: devres: add 'static bound to Devres&lt;T&gt;
  samples: rust: rust_driver_auxiliary: showcase lifetime-bound registration data
  rust: auxiliary: generalize Registration over ForLt
  rust: types: add `ForLt` trait for higher-ranked lifetime support
  gpu: nova-core: separate driver type from driver data
  samples: rust: rust_driver_pci: use HRT lifetime for Bar
  rust: io: make IoMem and ExclusiveIoMem lifetime-parameterized
  rust: pci: make Bar lifetime-parameterized
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull driver core updates from Danilo Krummrich:
 "Deferred probe:
   - Fix race where deferred probe timeout work could be permanently
     canceled by using mod_delayed_work()
   - Fix missing jiffies conversion in deferred_probe_extend_timeout()
   - Guard timeout extension with delayed_work_pending() to prevent
     premature firing
   - Use system_percpu_wq instead of the deprecated system_wq
   - Update deferred_probe_timeout documentation

  device:
   - Replace direct struct device bitfield access (can_match, dma_iommu,
     dma_skip_sync, dma_ops_bypass, state_synced, dma_coherent,
     of_node_reused, offline, offline_disabled) with flag-based
     accessors using bit operations
   - Reject devices with unregistered buses
   - Delete unused DEVICE_ATTR_PREALLOC()
   - Add low-level device attribute macros with const show/store
     callbacks, allowing device attributes to reside in read-only memory
   - Move core device attributes to read-only memory
   - Constify group array pointers in driver_add_groups() /
     driver_remove_groups(), struct bus_type, and struct device_driver

  device property:
   - Fix fwnode reference leak in fwnode_graph_get_endpoint_by_id()
   - Initialize all fields of fwnode_handle in fwnode_init()
   - Provide swnode_get()/swnode_put() wrappers around kobject_get/put()
   - Allow passing struct software_node_ref_args pointers directly to
     PROPERTY_ENTRY_REF()

  driver_override:
   - Migrate amba, cdx, vmbus, and rpmsg to the generic driver_override
     infrastructure, fixing a UAF from unsynchronized access to
     driver_override in bus match() callbacks
   - Remove the now-unused driver_set_override()

  firmware loader:
   - Fix recursive lock deadlock in device_cache_fw_images() when async
     work falls back to synchronous execution
   - Fix device reference leak in firmware_upload_register()

  platform:
   - Pass KBUILD_MODNAME through the platform driver registration macro
     to create module symlinks in sysfs for built-in drivers; move
     module_kset initialization to a pure_initcall and tegra cbb
     registration to core_initcall to ensure correct ordering
   - Pass THIS_MODULE implicitly through a coresight_init_driver() macro

  sysfs:
   - Upgrade OOB write detection in sysfs_kf_seq_show() from printk to
     WARN
   - Add return value clamping to sysfs_kf_read()

  Rust:
   - ACPI:

     Fix missing match data for PRP0001 by exporting
     acpi_of_match_device()

   - Auxiliary:

     Replace drvdata() with dedicated registration data on
     auxiliary_device. drvdata() exposed the driver's bus device private
     data beyond the driver's own scope, creating ordering constraints
     and forcing the data to outlive all registrations that access it.
     Registration data is instead scoped structurally to the
     Registration object, making lifecycle ordering enforced by
     construction rather than convention.

   - Rust-native device driver lifetimes (HRT):

     Allow Rust device drivers to carry a lifetime parameter on their
     bus device private data, tied to the device binding scope -- the
     interval during which a bus device is bound to a driver. Device
     resources like pci::Bar&lt;'a&gt; and IoMem&lt;'a&gt; can be stored directly in
     the driver's bus device private data with a lifetime bounded by the
     binding scope, so the compiler enforces at build time that they do
     not outlive the binding. This removes Devres indirection from every
     access site and eliminates try_access() failure paths in
     destructors.

     Bus driver traits use a Generic Associated Type (GAT) Data&lt;'bound&gt;
     to introduce the lifetime on the private data, rather than
     parameterizing the Driver trait itself. Auxiliary registration
     data, where the lifetime is not introduced by a trait callback but
     must be threaded through Registration, uses the ForLt trait (a
     type-level abstraction for types generic over a lifetime).

  Misc:
   - Fix DT overlayed devices not probing by reverting the broken
     treewide overlay fix and re-running fw_devlink consumer pickup when
     an overlay is applied to a bound device
   - Use root_device_register() for faux bus root device; add sanity
     check for failed bus init
   - Fix dev_has_sync_state() data race with READ_ONCE() and move it to
     base.h
   - Avoid spurious device_links warning when removing a device while
     its supplier is unbinding
   - Switch ISA bus to dynamic root device
   - Fix suspicious RCU usage in kernfs_put()
   - Remove devcoredump exit callback
   - Constify devfreq_event_class"

* tag 'driver-core-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core: (81 commits)
  software node: allow passing reference args to PROPERTY_ENTRY_REF()
  driver core: platform: set mod_name in driver registration
  coresight: pass THIS_MODULE implicitly through a macro
  kernel: param: initialize module_kset in a pure_initcall
  soc/tegra: cbb: Move driver registration from pure_initcall to core_initcall
  firmware_loader: Fix recursive lock in device_cache_fw_images()
  driver core: Use system_percpu_wq instead of system_wq
  driver core: remove driver_set_override()
  rpmsg: use generic driver_override infrastructure
  Drivers: hv: vmbus: use generic driver_override infrastructure
  cdx: use generic driver_override infrastructure
  amba: use generic driver_override infrastructure
  rust: devres: add 'static bound to Devres&lt;T&gt;
  samples: rust: rust_driver_auxiliary: showcase lifetime-bound registration data
  rust: auxiliary: generalize Registration over ForLt
  rust: types: add `ForLt` trait for higher-ranked lifetime support
  gpu: nova-core: separate driver type from driver data
  samples: rust: rust_driver_pci: use HRT lifetime for Bar
  rust: io: make IoMem and ExclusiveIoMem lifetime-parameterized
  rust: pci: make Bar lifetime-parameterized
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>rust: ptr: remove implicit index projection syntax</title>
<updated>2026-06-05T08:16:47+00:00</updated>
<author>
<name>Gary Guo</name>
<email>gary@garyguo.net</email>
</author>
<published>2026-06-02T14:17:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ab0a321b4030b6e1fbbd99210bb7b5d4bc89d5e4'/>
<id>ab0a321b4030b6e1fbbd99210bb7b5d4bc89d5e4</id>
<content type='text'>
All users have been converted to use keyworded index projection syntax to
explicitly state their intention when doing index projection.

Reviewed-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Reviewed-by: Andreas Hindborg &lt;a.hindborg@kernel.org&gt;
Reviewed-by: Alice Ryhl &lt;aliceryhl@google.com&gt;
Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
Acked-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Link: https://patch.msgid.link/20260602-projection-syntax-rework-v2-6-6989470f5440@garyguo.net
Signed-off-by: Miguel Ojeda &lt;ojeda@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
All users have been converted to use keyworded index projection syntax to
explicitly state their intention when doing index projection.

Reviewed-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Reviewed-by: Andreas Hindborg &lt;a.hindborg@kernel.org&gt;
Reviewed-by: Alice Ryhl &lt;aliceryhl@google.com&gt;
Signed-off-by: Gary Guo &lt;gary@garyguo.net&gt;
Acked-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Link: https://patch.msgid.link/20260602-projection-syntax-rework-v2-6-6989470f5440@garyguo.net
Signed-off-by: Miguel Ojeda &lt;ojeda@kernel.org&gt;
</pre>
</div>
</content>
</entry>
</feed>
