<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux.git/drivers/gpu/nova-core, branch master</title>
<subtitle>Linux kernel source tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/'/>
<entry>
<title>Merge tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel</title>
<updated>2026-04-15T15:45:00+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2026-04-15T15:45:00+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=4a57e0913e8c7fff407e97909f4ae48caa84d612'/>
<id>4a57e0913e8c7fff407e97909f4ae48caa84d612</id>
<content type='text'>
Pull drm updates from Dave Airlie:
 "Highlights:
   - new DRM RAS infrastructure using netlink
   - amdgpu: enable DC on CIK APUs, and more IP enablement, and more
     user queue work
   - xe: purgeable BO support, and new hw enablement
   - dma-buf : add revocable operations

  Full summary:

  mm:
   - two-pass MMU interval notifiers
   - add gpu active/reclaim per-node stat counters

  math:
   - provide __KERNEL_DIV_ROUND_CLOSEST() in UAPI
   - implement DIV_ROUND_CLOSEST() with __KERNEL_DIV_ROUND_CLOSEST()

  rust:
   - shared tag with driver-core: register macro and io infra
   - core: rework DMA coherent API
   - core: add interop::list to interop with C linked lists
   - core: add more num::Bounded operations
   - core: enable generic_arg_infer and add EMSGSIZE
   - workqueue: add ARef&lt;T&gt; support for work and delayed work
   - add GPU buddy allocator abstraction
   - add DRM shmem GEM helper abstraction
   - allow drm:::Device to dispatch work and delayed work items
     to driver private data
   - add dma_resv_lock helper and raw accessors

  core:
   - introduce DRM RAS infrastructure over netlink
   - add connector panel_type property
   - fourcc: add ARM interleaved 64k modifier
   - colorop: add destroy helper
   - suballoc: split into alloc and init helpers
   - mode: provide DRM_ARGB_GET*() macros for reading color components

  edid:
   - provide drm_output_color_Format

  dma-buf:
   - provide revoke mechanism for shared buffers
   - rename move_notify to invalidate_mappings
   - always enable move_notify
   - protect dma_fence_ops with RCU and improve locking
   - clean pages with helpers

  atomic:
   - allocate drm_private_state via callback
   - helper: use system_percpu_wq

  buddy:
   - make buddy allocator available to gpu level
   - add kernel-doc for buddy allocator
   - improve aligned allocation

  ttm:
   - fix fence signalling
   - improve tests and docs
   - improve handling of gfp_retry_mayfail
   - use per-node stat counters to track memory allocations
   - port pool to use list_lru
   - drop NUMA specific pools
   - make pool shrinker numa aware
   - track allocated pages per numa node

  coreboot:
   - cleanup coreboot framebuffer support

  sched:
   - fix race condition in drm_sched_fini

  pagemap:
   - enable THP support
   - pass pagemap_addr by reference

  gem-shmem:
   - Track page accessed/dirty status across mmap/vmap

  gpusvm:
   - reenable device to device migration
   - fix unbalanced unclock

  bridge:
   - anx7625: Support USB-C plus DT bindings
   - connector: Fix EDID detection
   - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve
     others
   - fsl-ldb: Fix visual artifacts plus related DT property
     'enable-termination-resistor'
   - imx8qxp-pixel-link: Improve bridge reference handling
   - lt9611: Support Port-B-only input plus DT bindings
   - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up
   - Support TH1520 HDMI plus DT bindings
   - waveshare-dsi: Fix register and attach; Support 1..4 DSI lanes plus
     DT bindings
   - anx7625: Fix USB Type-C handling
   - cdns-mhdp8546-core: Handle HDCP state in bridge atomic_check
   - Support Lontium LT8713SX DP MST bridge plus DT bindings
   - analogix_dp: Use DP helpers for link training

  panel:
   - panel-jdi-lt070me05000: Use mipi-dsi multi functions
   - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN
     N116BCL-EAK (C2); Support FriendlyELEC plus DT changes
   - panel-edp: Fix timings for BOE NV140WUM-N64
   - ilitek-ili9882t: Allow GPIO calls to sleep
   - jadard: Support TAIGUAN XTI05101-01A
   - lxd: Support LXD M9189A plus DT bindings
   - mantix: Fix pixel clock; Clean up
   - motorola: Support Motorola Atrix 4G and Droid X2 plus DT bindings
   - novatek: Support Novatek/Tianma NT37700F plus DT bindings
   - simple: Support EDT ET057023UDBA plus DT bindings; Support Powertip
     PH800480T032-ZHC19 plus DT bindings; Support Waveshare 13.3"
   - novatek-nt36672a: Use mipi_dsi_*_multi() functions
   - panel-edp: Support BOE NV153WUM-N42, CMN N153JCA-ELK, CSW
     MNF307QS3-2
   - support Himax HX83121A plus DT bindings
   - support JuTouch JT070TM041 plus DT bindings
   - support Samsung S6E8FC0 plus DT bindings
   - himax-hx83102c: support Samsung S6E8FC0 plus DT bindings; support
     backlight
   - ili9806e: support Rocktech RK050HR345-CT106A plus DT bindings
   - simple: support Tianma TM050RDH03 plus DT bindings

  amdgpu:
   - enable DC by default on CIK APUs
   - userq fence ioctl param size fixes
   - set panel_type to OLED for eDP
   - refactor DC i2c code
   - FAMS2 update
   - rework ttm handling to allow multiple engines
   - DC DCE 6.x cleanup
   - DC support for NUTMEG/TRAVIS DP bridge
   - DCN 4.2 support
   - GC12 idle power fix for compute
   - use struct drm_edid in non-DC code
   - enable NV12/P010 support on primary planes
   - support newer IP discovery tables
   - VCN/JPEG 5.0.2 support
   - GC/MES 12.1 updates
   - USERQ fixes
   - add DC idle state manager
   - eDP DSC seamless boot

  amdkfd:
   - GC 12.1 updates
   - non 4K page fixes

  xe:
   - basic Xe3p_LPG and NVL-P enabling patches
   - allow VM_BIND decompress support
   - add purgeable buffer object support
   - add xe_vm_get_property_ioctl
   - restrict multi-lrc to VCS/VECS engines
   - allow disabling VM overcommit in fault mode
   - dGPU memory optimizations
   - Workaround cleanups and simplification
   - Allow VFs VRAM quote changes using sysfs
   - convert GT stats to per-cpu counters
   - pagefault refactors
   - enable multi-queue on xe3p_xpc
   - disable DCC on PTL
   - make MMIO communication more robust
   - disable D3Cold for BMG on specific platforms
   - vfio: improve FLR sync for Xe VFIO

  i915/display:
   - C10/C20/LT PHY PLL divider verification
   - use trans push mechanism to generate PSR frame change on LNL+
   - refactor DP DSC slice config
   - VGA decode refactoring
   - refactor DPT, gen2-4 overlay, masked field register macro helpers
   - refactor stolen memory allocation decisions
   - prepare for UHBR DP tunnels
   - refactor LT PHY PLL to use DPLL framework
   - implement register polling/waiting in display code
   - add shared stepping header between i915 and display

  i915:
   - fix potential overflow of shmem scatterlist length

  nouveau:
   - provide Z cull info to userspace
   - initial GA100 support
   - shutdown on PCI device shutdown

  nova-core:
   - harden GSP command queue
   - add support for large RPCs
   - simplify GSP sequencer and message handling
   - refactor falcon firmware handling
   - convert to new register macro
   - conver to new DMA coherent API
   - use checked arithmetic
   - add debugfs support for gsp-rm log buffers
   - fix aux device registration for multi-GPU

  msm:
   - CI:
      - Uprev mesa
      - Restore CI jobs for Qualcomm APQ8016 and APQ8096 devices
   - Core:
      - Switched to of_get_available_child_by_name()
   - DPU:
      - Fixes for DSC panels
      - Fixed brownout because of the frequency / OPP mismatch
      - Quad pipe preparation (not enabled yet)
      - Switched to virtual planes by default
      - Dropped VBIF_NRT support
      - Added support for Eliza platform
      - Reworked alpha handling
      - Switched to correct CWB definitions on Eliza
      - Dropped dummy INTF_0 on MSM8953
      - Corrected INTFs related to DP-MST
   - DP:
      - Removed debug prints looking into PHY internals
   - DSI:
      - Fixes for DSC panels
      - RGB101010 support
      - Support for SC8280XP
      - Moved PHY bindings from display/ to phy/
   - GPU:
      - Preemption support for x2-85 and a840
      - IFPC support for a840
      - SKU detection support for x2-85 and a840
      - Expose AQE support (VK ray-pipeline)
      - Avoid locking in VM_BIND fence signaling path
      - Fix to avoid reclaim in GPU snapshot path
      - Disallow foreign mapping of _NO_SHARE BOs
   - HDMI:
      - Fixed infoframes programming
   - MDP5:
      - Dropped support for MSM8974v1
      - Dropped now unused code for MSM8974 v1 and SDM660 / MSM8998

  panthor:
   - add tracepoints for power and IRQs
   - fix fence handling
   - extend timestamp query with flags
   - support various sources for timestamp queries

  tyr:
   - fix names and model/versions

  rockchip:
   - vop2: use drm logging function
   - rk3576 displayport support
   - support CRTC background color

  atmel-hlcdc:
   - support sana5d65 LCD controller

  tilcdc:
   - use DT bindings schema
   - use managed DRM interfaces
   - support DRM_BRIDGE_ATTACH_NO_CONNECTOR

  verisilicon:
   - support DC8200 + DT bindings

  virtgpu:
   - support PRIME import with 3D enabled

  komeda:
   - fix integer overflow in AFBC checks

  mcde:
   - improve bridge handling

  gma500:
   - use drm client buffer for fbdev framebuffer

  amdxdna:
   - add sensors ioctls
   - provide NPU power estimate
   - support column utilization sensor
   - allow forcing DMA through IOMMU IOVA
   - support per-BO mem usage queries
   - refactor GEM implementation

  ivpu:
   - update boot API to v3.29.4
   - limit per-user number of doorbells/contexts
   - perform engine reset on TDR error

  loongson:
   - replace custom code with drm_gem_ttm_dumb_map_offset()

  imx:
   - support planes behind the primary plane
   - fix bus-format selection

  vkms:
   - support CRTC background color

  v3d:
   - improve handling of struct v3d_stats

  komeda:
   - support Arm China Linlon D6 plus DT bindings

  imagination:
   - improve power-off sequence
   - support context-reset notification from firmware

  mediatek:
   - mtk_dsi: enable hs clock during pre-enable
   - Remove all conflicting aperture devices during probe
   - Add support for mt8167 display blocks"

* tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel: (1735 commits)
  drm/ttm/tests: Remove checks from ttm_pool_free_no_dma_alloc
  drm/ttm/tests: fix lru_count ASSERT
  drm/vram: remove DRM_VRAM_MM_FILE_OPERATIONS from docs
  drm/fb-helper: Fix a locking bug in an error path
  dma-fence: correct kernel-doc function parameter @flags
  ttm/pool: track allocated_pages per numa node.
  ttm/pool: make pool shrinker NUMA aware (v2)
  ttm/pool: drop numa specific pools
  ttm/pool: port to list_lru. (v2)
  drm/ttm: use gpu mm stats to track gpu memory allocations. (v4)
  mm: add gpu active/reclaim per-node stat counters (v2)
  gpu: nova-core: fix missing colon in SEC2 boot debug message
  gpu: nova-core: vbios: use from_le_bytes() for PCI ROM header parsing
  gpu: nova-core: bitfield: fix broken Default implementation
  gpu: nova-core: falcon: pad firmware DMA object size to required block alignment
  gpu: nova-core: gsp: fix undefined behavior in command queue code
  drm/shmem_helper: Make sure PMD entries get the writeable upgrade
  accel/ivpu: Trigger recovery on TDR with OS scheduling
  drm/msm: Use of_get_available_child_by_name()
  dt-bindings: display/msm: move DSI PHY bindings to phy/ subdir
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull drm updates from Dave Airlie:
 "Highlights:
   - new DRM RAS infrastructure using netlink
   - amdgpu: enable DC on CIK APUs, and more IP enablement, and more
     user queue work
   - xe: purgeable BO support, and new hw enablement
   - dma-buf : add revocable operations

  Full summary:

  mm:
   - two-pass MMU interval notifiers
   - add gpu active/reclaim per-node stat counters

  math:
   - provide __KERNEL_DIV_ROUND_CLOSEST() in UAPI
   - implement DIV_ROUND_CLOSEST() with __KERNEL_DIV_ROUND_CLOSEST()

  rust:
   - shared tag with driver-core: register macro and io infra
   - core: rework DMA coherent API
   - core: add interop::list to interop with C linked lists
   - core: add more num::Bounded operations
   - core: enable generic_arg_infer and add EMSGSIZE
   - workqueue: add ARef&lt;T&gt; support for work and delayed work
   - add GPU buddy allocator abstraction
   - add DRM shmem GEM helper abstraction
   - allow drm:::Device to dispatch work and delayed work items
     to driver private data
   - add dma_resv_lock helper and raw accessors

  core:
   - introduce DRM RAS infrastructure over netlink
   - add connector panel_type property
   - fourcc: add ARM interleaved 64k modifier
   - colorop: add destroy helper
   - suballoc: split into alloc and init helpers
   - mode: provide DRM_ARGB_GET*() macros for reading color components

  edid:
   - provide drm_output_color_Format

  dma-buf:
   - provide revoke mechanism for shared buffers
   - rename move_notify to invalidate_mappings
   - always enable move_notify
   - protect dma_fence_ops with RCU and improve locking
   - clean pages with helpers

  atomic:
   - allocate drm_private_state via callback
   - helper: use system_percpu_wq

  buddy:
   - make buddy allocator available to gpu level
   - add kernel-doc for buddy allocator
   - improve aligned allocation

  ttm:
   - fix fence signalling
   - improve tests and docs
   - improve handling of gfp_retry_mayfail
   - use per-node stat counters to track memory allocations
   - port pool to use list_lru
   - drop NUMA specific pools
   - make pool shrinker numa aware
   - track allocated pages per numa node

  coreboot:
   - cleanup coreboot framebuffer support

  sched:
   - fix race condition in drm_sched_fini

  pagemap:
   - enable THP support
   - pass pagemap_addr by reference

  gem-shmem:
   - Track page accessed/dirty status across mmap/vmap

  gpusvm:
   - reenable device to device migration
   - fix unbalanced unclock

  bridge:
   - anx7625: Support USB-C plus DT bindings
   - connector: Fix EDID detection
   - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve
     others
   - fsl-ldb: Fix visual artifacts plus related DT property
     'enable-termination-resistor'
   - imx8qxp-pixel-link: Improve bridge reference handling
   - lt9611: Support Port-B-only input plus DT bindings
   - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up
   - Support TH1520 HDMI plus DT bindings
   - waveshare-dsi: Fix register and attach; Support 1..4 DSI lanes plus
     DT bindings
   - anx7625: Fix USB Type-C handling
   - cdns-mhdp8546-core: Handle HDCP state in bridge atomic_check
   - Support Lontium LT8713SX DP MST bridge plus DT bindings
   - analogix_dp: Use DP helpers for link training

  panel:
   - panel-jdi-lt070me05000: Use mipi-dsi multi functions
   - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN
     N116BCL-EAK (C2); Support FriendlyELEC plus DT changes
   - panel-edp: Fix timings for BOE NV140WUM-N64
   - ilitek-ili9882t: Allow GPIO calls to sleep
   - jadard: Support TAIGUAN XTI05101-01A
   - lxd: Support LXD M9189A plus DT bindings
   - mantix: Fix pixel clock; Clean up
   - motorola: Support Motorola Atrix 4G and Droid X2 plus DT bindings
   - novatek: Support Novatek/Tianma NT37700F plus DT bindings
   - simple: Support EDT ET057023UDBA plus DT bindings; Support Powertip
     PH800480T032-ZHC19 plus DT bindings; Support Waveshare 13.3"
   - novatek-nt36672a: Use mipi_dsi_*_multi() functions
   - panel-edp: Support BOE NV153WUM-N42, CMN N153JCA-ELK, CSW
     MNF307QS3-2
   - support Himax HX83121A plus DT bindings
   - support JuTouch JT070TM041 plus DT bindings
   - support Samsung S6E8FC0 plus DT bindings
   - himax-hx83102c: support Samsung S6E8FC0 plus DT bindings; support
     backlight
   - ili9806e: support Rocktech RK050HR345-CT106A plus DT bindings
   - simple: support Tianma TM050RDH03 plus DT bindings

  amdgpu:
   - enable DC by default on CIK APUs
   - userq fence ioctl param size fixes
   - set panel_type to OLED for eDP
   - refactor DC i2c code
   - FAMS2 update
   - rework ttm handling to allow multiple engines
   - DC DCE 6.x cleanup
   - DC support for NUTMEG/TRAVIS DP bridge
   - DCN 4.2 support
   - GC12 idle power fix for compute
   - use struct drm_edid in non-DC code
   - enable NV12/P010 support on primary planes
   - support newer IP discovery tables
   - VCN/JPEG 5.0.2 support
   - GC/MES 12.1 updates
   - USERQ fixes
   - add DC idle state manager
   - eDP DSC seamless boot

  amdkfd:
   - GC 12.1 updates
   - non 4K page fixes

  xe:
   - basic Xe3p_LPG and NVL-P enabling patches
   - allow VM_BIND decompress support
   - add purgeable buffer object support
   - add xe_vm_get_property_ioctl
   - restrict multi-lrc to VCS/VECS engines
   - allow disabling VM overcommit in fault mode
   - dGPU memory optimizations
   - Workaround cleanups and simplification
   - Allow VFs VRAM quote changes using sysfs
   - convert GT stats to per-cpu counters
   - pagefault refactors
   - enable multi-queue on xe3p_xpc
   - disable DCC on PTL
   - make MMIO communication more robust
   - disable D3Cold for BMG on specific platforms
   - vfio: improve FLR sync for Xe VFIO

  i915/display:
   - C10/C20/LT PHY PLL divider verification
   - use trans push mechanism to generate PSR frame change on LNL+
   - refactor DP DSC slice config
   - VGA decode refactoring
   - refactor DPT, gen2-4 overlay, masked field register macro helpers
   - refactor stolen memory allocation decisions
   - prepare for UHBR DP tunnels
   - refactor LT PHY PLL to use DPLL framework
   - implement register polling/waiting in display code
   - add shared stepping header between i915 and display

  i915:
   - fix potential overflow of shmem scatterlist length

  nouveau:
   - provide Z cull info to userspace
   - initial GA100 support
   - shutdown on PCI device shutdown

  nova-core:
   - harden GSP command queue
   - add support for large RPCs
   - simplify GSP sequencer and message handling
   - refactor falcon firmware handling
   - convert to new register macro
   - conver to new DMA coherent API
   - use checked arithmetic
   - add debugfs support for gsp-rm log buffers
   - fix aux device registration for multi-GPU

  msm:
   - CI:
      - Uprev mesa
      - Restore CI jobs for Qualcomm APQ8016 and APQ8096 devices
   - Core:
      - Switched to of_get_available_child_by_name()
   - DPU:
      - Fixes for DSC panels
      - Fixed brownout because of the frequency / OPP mismatch
      - Quad pipe preparation (not enabled yet)
      - Switched to virtual planes by default
      - Dropped VBIF_NRT support
      - Added support for Eliza platform
      - Reworked alpha handling
      - Switched to correct CWB definitions on Eliza
      - Dropped dummy INTF_0 on MSM8953
      - Corrected INTFs related to DP-MST
   - DP:
      - Removed debug prints looking into PHY internals
   - DSI:
      - Fixes for DSC panels
      - RGB101010 support
      - Support for SC8280XP
      - Moved PHY bindings from display/ to phy/
   - GPU:
      - Preemption support for x2-85 and a840
      - IFPC support for a840
      - SKU detection support for x2-85 and a840
      - Expose AQE support (VK ray-pipeline)
      - Avoid locking in VM_BIND fence signaling path
      - Fix to avoid reclaim in GPU snapshot path
      - Disallow foreign mapping of _NO_SHARE BOs
   - HDMI:
      - Fixed infoframes programming
   - MDP5:
      - Dropped support for MSM8974v1
      - Dropped now unused code for MSM8974 v1 and SDM660 / MSM8998

  panthor:
   - add tracepoints for power and IRQs
   - fix fence handling
   - extend timestamp query with flags
   - support various sources for timestamp queries

  tyr:
   - fix names and model/versions

  rockchip:
   - vop2: use drm logging function
   - rk3576 displayport support
   - support CRTC background color

  atmel-hlcdc:
   - support sana5d65 LCD controller

  tilcdc:
   - use DT bindings schema
   - use managed DRM interfaces
   - support DRM_BRIDGE_ATTACH_NO_CONNECTOR

  verisilicon:
   - support DC8200 + DT bindings

  virtgpu:
   - support PRIME import with 3D enabled

  komeda:
   - fix integer overflow in AFBC checks

  mcde:
   - improve bridge handling

  gma500:
   - use drm client buffer for fbdev framebuffer

  amdxdna:
   - add sensors ioctls
   - provide NPU power estimate
   - support column utilization sensor
   - allow forcing DMA through IOMMU IOVA
   - support per-BO mem usage queries
   - refactor GEM implementation

  ivpu:
   - update boot API to v3.29.4
   - limit per-user number of doorbells/contexts
   - perform engine reset on TDR error

  loongson:
   - replace custom code with drm_gem_ttm_dumb_map_offset()

  imx:
   - support planes behind the primary plane
   - fix bus-format selection

  vkms:
   - support CRTC background color

  v3d:
   - improve handling of struct v3d_stats

  komeda:
   - support Arm China Linlon D6 plus DT bindings

  imagination:
   - improve power-off sequence
   - support context-reset notification from firmware

  mediatek:
   - mtk_dsi: enable hs clock during pre-enable
   - Remove all conflicting aperture devices during probe
   - Add support for mt8167 display blocks"

* tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel: (1735 commits)
  drm/ttm/tests: Remove checks from ttm_pool_free_no_dma_alloc
  drm/ttm/tests: fix lru_count ASSERT
  drm/vram: remove DRM_VRAM_MM_FILE_OPERATIONS from docs
  drm/fb-helper: Fix a locking bug in an error path
  dma-fence: correct kernel-doc function parameter @flags
  ttm/pool: track allocated_pages per numa node.
  ttm/pool: make pool shrinker NUMA aware (v2)
  ttm/pool: drop numa specific pools
  ttm/pool: port to list_lru. (v2)
  drm/ttm: use gpu mm stats to track gpu memory allocations. (v4)
  mm: add gpu active/reclaim per-node stat counters (v2)
  gpu: nova-core: fix missing colon in SEC2 boot debug message
  gpu: nova-core: vbios: use from_le_bytes() for PCI ROM header parsing
  gpu: nova-core: bitfield: fix broken Default implementation
  gpu: nova-core: falcon: pad firmware DMA object size to required block alignment
  gpu: nova-core: gsp: fix undefined behavior in command queue code
  drm/shmem_helper: Make sure PMD entries get the writeable upgrade
  accel/ivpu: Trigger recovery on TDR with OS scheduling
  drm/msm: Use of_get_available_child_by_name()
  dt-bindings: display/msm: move DSI PHY bindings to phy/ subdir
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'rust-timekeeping-for-v7.1' of https://github.com/Rust-for-Linux/linux into rust-next</title>
<updated>2026-04-08T08:44:11+00:00</updated>
<author>
<name>Miguel Ojeda</name>
<email>ojeda@kernel.org</email>
</author>
<published>2026-04-08T07:46:01+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=b06b348e855383ed80e041299f3925cdd7dff3da'/>
<id>b06b348e855383ed80e041299f3925cdd7dff3da</id>
<content type='text'>
Pull timekeeping updates from Andreas Hindborg:

 - Expand the example section in the 'HrTimer' documentation.

 - Mark the 'ClockSource' trait as unsafe to ensure valid values for
   'ktime_get()'.

 - Add 'Delta::from_nanos()'.

This is a back merge since the pull request has a newer base -- we will
avoid that in the future.

And, given it is a back merge, it happens to resolve the "subtle" conflict
around '--remap-path-{prefix,scope}' that I discussed in linux-next [1],
plus a few other common conflicts. The result matches what we did for
next-20260407.

The actual diffstat (i.e. using a temporary merge of upstream first) is:

    rust/kernel/time.rs         |  32 ++++-
    rust/kernel/time/hrtimer.rs | 336 ++++++++++++++++++++++++++++++++++++++++++++
    2 files changed, 362 insertions(+), 6 deletions(-)

Link: https://lore.kernel.org/linux-next/CANiq72kdxB=W3_CV1U44oOK3SssztPo2wLDZt6LP94TEO+Kj4g@mail.gmail.com/ [1]

* tag 'rust-timekeeping-for-v7.1' of https://github.com/Rust-for-Linux/linux:
  hrtimer: add usage examples to documentation
  rust: time: make ClockSource unsafe trait
  rust/time: Add Delta::from_nanos()
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull timekeeping updates from Andreas Hindborg:

 - Expand the example section in the 'HrTimer' documentation.

 - Mark the 'ClockSource' trait as unsafe to ensure valid values for
   'ktime_get()'.

 - Add 'Delta::from_nanos()'.

This is a back merge since the pull request has a newer base -- we will
avoid that in the future.

And, given it is a back merge, it happens to resolve the "subtle" conflict
around '--remap-path-{prefix,scope}' that I discussed in linux-next [1],
plus a few other common conflicts. The result matches what we did for
next-20260407.

The actual diffstat (i.e. using a temporary merge of upstream first) is:

    rust/kernel/time.rs         |  32 ++++-
    rust/kernel/time/hrtimer.rs | 336 ++++++++++++++++++++++++++++++++++++++++++++
    2 files changed, 362 insertions(+), 6 deletions(-)

Link: https://lore.kernel.org/linux-next/CANiq72kdxB=W3_CV1U44oOK3SssztPo2wLDZt6LP94TEO+Kj4g@mail.gmail.com/ [1]

* tag 'rust-timekeeping-for-v7.1' of https://github.com/Rust-for-Linux/linux:
  hrtimer: add usage examples to documentation
  rust: time: make ClockSource unsafe trait
  rust/time: Add Delta::from_nanos()
</pre>
</div>
</content>
</entry>
<entry>
<title>rust: bump Clippy's MSRV and clean `incompatible_msrv` allows</title>
<updated>2026-04-07T07:51:39+00:00</updated>
<author>
<name>Miguel Ojeda</name>
<email>ojeda@kernel.org</email>
</author>
<published>2026-04-05T23:52:42+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=b6cfba43662363dd7bff824e012cd924277ca86b'/>
<id>b6cfba43662363dd7bff824e012cd924277ca86b</id>
<content type='text'>
Following the Rust compiler bump, we can now update Clippy's MSRV we
set in the configuration, which will improve the diagnostics it generates.

Thus do so and clean a few of the `allow`s that are not needed anymore.

Reviewed-by: Tamir Duberstein &lt;tamird@kernel.org&gt;
Acked-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Reviewed-by: Gary Guo &lt;gary@garyguo.net&gt;
Link: https://patch.msgid.link/20260405235309.418950-7-ojeda@kernel.org
Signed-off-by: Miguel Ojeda &lt;ojeda@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Following the Rust compiler bump, we can now update Clippy's MSRV we
set in the configuration, which will improve the diagnostics it generates.

Thus do so and clean a few of the `allow`s that are not needed anymore.

Reviewed-by: Tamir Duberstein &lt;tamird@kernel.org&gt;
Acked-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Reviewed-by: Gary Guo &lt;gary@garyguo.net&gt;
Link: https://patch.msgid.link/20260405235309.418950-7-ojeda@kernel.org
Signed-off-by: Miguel Ojeda &lt;ojeda@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>gpu: nova-core: bindings: remove unneeded `cfg_attr`</title>
<updated>2026-04-07T07:51:39+00:00</updated>
<author>
<name>Miguel Ojeda</name>
<email>ojeda@kernel.org</email>
</author>
<published>2026-04-05T23:52:40+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=341c51ee3293031476ca50f0406ddf1c7c91bba4'/>
<id>341c51ee3293031476ca50f0406ddf1c7c91bba4</id>
<content type='text'>
These were likely copied from the `bindings` and `uapi` crates, but are
unneeded since there are no `cfg(test)`s in the bindings.

In addition, the issue that triggered the addition in those crates
originally is also fixed in `bindgen` (please see the previous commit).

Thus remove them.

Reviewed-by: Tamir Duberstein &lt;tamird@kernel.org&gt;
Reviewed-by: Gary Guo &lt;gary@garyguo.net&gt;
Acked-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Link: https://patch.msgid.link/20260405235309.418950-5-ojeda@kernel.org
Signed-off-by: Miguel Ojeda &lt;ojeda@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
These were likely copied from the `bindings` and `uapi` crates, but are
unneeded since there are no `cfg(test)`s in the bindings.

In addition, the issue that triggered the addition in those crates
originally is also fixed in `bindgen` (please see the previous commit).

Thus remove them.

Reviewed-by: Tamir Duberstein &lt;tamird@kernel.org&gt;
Reviewed-by: Gary Guo &lt;gary@garyguo.net&gt;
Acked-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Link: https://patch.msgid.link/20260405235309.418950-5-ojeda@kernel.org
Signed-off-by: Miguel Ojeda &lt;ojeda@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>gpu: nova-core: fix missing colon in SEC2 boot debug message</title>
<updated>2026-04-06T01:06:39+00:00</updated>
<author>
<name>David Carlier</name>
<email>devnexen@gmail.com</email>
</author>
<published>2026-03-31T10:37:44+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=a7a080bb4236ebe577b6776d940d1717912ff6dd'/>
<id>a7a080bb4236ebe577b6776d940d1717912ff6dd</id>
<content type='text'>
The SEC2 mailbox debug output formats MBOX1 without a colon separator,
producing "MBOX10xdead" instead of "MBOX1: 0xdead". The GSP debug
message a few lines above uses the correct format.

Fixes: 5949d419c193 ("gpu: nova-core: gsp: Boot GSP")
Signed-off-by: David Carlier &lt;devnexen@gmail.com&gt;
Link: https://patch.msgid.link/20260331103744.605683-1-devnexen@gmail.com
Signed-off-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The SEC2 mailbox debug output formats MBOX1 without a colon separator,
producing "MBOX10xdead" instead of "MBOX1: 0xdead". The GSP debug
message a few lines above uses the correct format.

Fixes: 5949d419c193 ("gpu: nova-core: gsp: Boot GSP")
Signed-off-by: David Carlier &lt;devnexen@gmail.com&gt;
Link: https://patch.msgid.link/20260331103744.605683-1-devnexen@gmail.com
Signed-off-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>gpu: nova-core: vbios: use from_le_bytes() for PCI ROM header parsing</title>
<updated>2026-04-05T14:23:43+00:00</updated>
<author>
<name>John Hubbard</name>
<email>jhubbard@nvidia.com</email>
</author>
<published>2026-04-04T21:28:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=6b9a10d6f0a131a8ea6beae559a31084840b063d'/>
<id>6b9a10d6f0a131a8ea6beae559a31084840b063d</id>
<content type='text'>
Clippy fires two clippy::precedence warnings on the manual
byte-shifting expression:
  warning: operator precedence can trip the unwary
     --&gt; drivers/gpu/nova-core/vbios.rs:511:17
      |
  511 | /                 u32::from(data[29]) &lt;&lt; 24
  512 | |                     | u32::from(data[28]) &lt;&lt; 16
  513 | |                     | u32::from(data[27]) &lt;&lt; 8
      | |______________________________________________^

Clear the warnings by replacing manual byte-shifting with
u32::from_le_bytes(). Using from_le_bytes() is also a tiny code
improvement, because it uses less code and is clearer about the intent.

Signed-off-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Link: https://patch.msgid.link/20260404212831.78971-2-jhubbard@nvidia.com
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Clippy fires two clippy::precedence warnings on the manual
byte-shifting expression:
  warning: operator precedence can trip the unwary
     --&gt; drivers/gpu/nova-core/vbios.rs:511:17
      |
  511 | /                 u32::from(data[29]) &lt;&lt; 24
  512 | |                     | u32::from(data[28]) &lt;&lt; 16
  513 | |                     | u32::from(data[27]) &lt;&lt; 8
      | |______________________________________________^

Clear the warnings by replacing manual byte-shifting with
u32::from_le_bytes(). Using from_le_bytes() is also a tiny code
improvement, because it uses less code and is clearer about the intent.

Signed-off-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Link: https://patch.msgid.link/20260404212831.78971-2-jhubbard@nvidia.com
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>gpu: nova-core: bitfield: fix broken Default implementation</title>
<updated>2026-04-05T14:17:18+00:00</updated>
<author>
<name>Eliot Courtney</name>
<email>ecourtney@nvidia.com</email>
</author>
<published>2026-04-01T01:42:28+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=de0aca13509bf47a2d49bc7a26d56079c758c95f'/>
<id>de0aca13509bf47a2d49bc7a26d56079c758c95f</id>
<content type='text'>
The current implementation does not actually set the default values for
the fields in the bitfield.

Fixes: 3fa145bef533 ("gpu: nova-core: register: generate correct `Default` implementation")
Signed-off-by: Eliot Courtney &lt;ecourtney@nvidia.com&gt;
Link: https://patch.msgid.link/20260401-fix-bitfield-v2-1-2fa68c98114a@nvidia.com
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The current implementation does not actually set the default values for
the fields in the bitfield.

Fixes: 3fa145bef533 ("gpu: nova-core: register: generate correct `Default` implementation")
Signed-off-by: Eliot Courtney &lt;ecourtney@nvidia.com&gt;
Link: https://patch.msgid.link/20260401-fix-bitfield-v2-1-2fa68c98114a@nvidia.com
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>gpu: nova-core: falcon: pad firmware DMA object size to required block alignment</title>
<updated>2026-04-05T14:10:49+00:00</updated>
<author>
<name>Alexandre Courbot</name>
<email>acourbot@nvidia.com</email>
</author>
<published>2026-04-05T02:22:54+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=0e0ffbcd0e8ef7a6919be5ff240b170f596815ca'/>
<id>0e0ffbcd0e8ef7a6919be5ff240b170f596815ca</id>
<content type='text'>
Commit a88831502c8f ("gpu: nova-core: falcon: use dma::Coherent")
dropped the nova-local `DmaObject` device memory type for the
kernel-global `Coherent` one.

This switch had a side-effect: `DmaObject` always aligned the requested
size to `PAGE_SIZE`, and also reported that adjusted size when queried.
`Coherent`, on the other hand, does page-align allocation sizes but only
allows CPU access on the exact size provided by the caller.

This change runs into a limitation of falcon DMA copies, namely that DMA
accesses are done on blocks of exactly 256 bytes. If the provided data
does not have a length that is a multiple of 256, `dma_wr` returns
an error.

It was expected that all firmwares would present the proper adjusted
size, but this is not the case at least on my GA107:

    NovaCore 0000:08:00.0: DMA transfer goes beyond range of DMA object
    NovaCore 0000:08:00.0: Failed to load FWSEC firmware: EINVAL
    NovaCore 0000:08:00.0: probe with driver NovaCore failed with error -22

Fix this by padding the `Coherent`'s size to `MEM_BLOCK_ALIGNMENT` (i.e.
256) when allocating it and filling it with zeroes, before copying the
firmware on top of it.

Fixes: a88831502c8f ("gpu: nova-core: falcon: use dma::Coherent")
Reviewed-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Reviewed-by: Gary Guo &lt;gary@garyguo.net&gt;
Signed-off-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Link: https://patch.msgid.link/20260405-falcon-dma-roundup-v2-1-4af5b2ff9c16@nvidia.com
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Commit a88831502c8f ("gpu: nova-core: falcon: use dma::Coherent")
dropped the nova-local `DmaObject` device memory type for the
kernel-global `Coherent` one.

This switch had a side-effect: `DmaObject` always aligned the requested
size to `PAGE_SIZE`, and also reported that adjusted size when queried.
`Coherent`, on the other hand, does page-align allocation sizes but only
allows CPU access on the exact size provided by the caller.

This change runs into a limitation of falcon DMA copies, namely that DMA
accesses are done on blocks of exactly 256 bytes. If the provided data
does not have a length that is a multiple of 256, `dma_wr` returns
an error.

It was expected that all firmwares would present the proper adjusted
size, but this is not the case at least on my GA107:

    NovaCore 0000:08:00.0: DMA transfer goes beyond range of DMA object
    NovaCore 0000:08:00.0: Failed to load FWSEC firmware: EINVAL
    NovaCore 0000:08:00.0: probe with driver NovaCore failed with error -22

Fix this by padding the `Coherent`'s size to `MEM_BLOCK_ALIGNMENT` (i.e.
256) when allocating it and filling it with zeroes, before copying the
firmware on top of it.

Fixes: a88831502c8f ("gpu: nova-core: falcon: use dma::Coherent")
Reviewed-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Reviewed-by: Gary Guo &lt;gary@garyguo.net&gt;
Signed-off-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Link: https://patch.msgid.link/20260405-falcon-dma-roundup-v2-1-4af5b2ff9c16@nvidia.com
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>gpu: nova-core: gsp: fix undefined behavior in command queue code</title>
<updated>2026-04-05T13:35:07+00:00</updated>
<author>
<name>Alexandre Courbot</name>
<email>acourbot@nvidia.com</email>
</author>
<published>2026-04-04T05:04:24+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=8e6c34785a30012a53417b6d92e0ced71b9115a7'/>
<id>8e6c34785a30012a53417b6d92e0ced71b9115a7</id>
<content type='text'>
`driver_read_area` and `driver_write_area` are internal methods that
return slices containing the area of the command queue buffer that the
driver has exclusive read or write access, respectively.

While their returned value is correct and safe to use, internally they
temporarily create a reference to the whole command-buffer slice,
including GSP-owned regions. These regions can change without notice,
and thus creating a slice to them, even if never accessed, is undefined
behavior.

Fix this by making these methods create slices to valid regions only.

Fixes: 75f6b1de8133 ("gpu: nova-core: gsp: Add GSP command queue bindings and handling")
Reported-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Closes: https://lore.kernel.org/all/DH47AVPEKN06.3BERUSJIB4M1R@kernel.org/
Signed-off-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Reviewed-by: Gary Guo &lt;gary@garyguo.net&gt;
Link: https://patch.msgid.link/20260404-cmdq-ub-fix-v5-1-53d21f4752f5@nvidia.com
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
`driver_read_area` and `driver_write_area` are internal methods that
return slices containing the area of the command queue buffer that the
driver has exclusive read or write access, respectively.

While their returned value is correct and safe to use, internally they
temporarily create a reference to the whole command-buffer slice,
including GSP-owned regions. These regions can change without notice,
and thus creating a slice to them, even if never accessed, is undefined
behavior.

Fix this by making these methods create slices to valid regions only.

Fixes: 75f6b1de8133 ("gpu: nova-core: gsp: Add GSP command queue bindings and handling")
Reported-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Closes: https://lore.kernel.org/all/DH47AVPEKN06.3BERUSJIB4M1R@kernel.org/
Signed-off-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
Reviewed-by: Gary Guo &lt;gary@garyguo.net&gt;
Link: https://patch.msgid.link/20260404-cmdq-ub-fix-v5-1-53d21f4752f5@nvidia.com
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>gpu: nova-core: firmware: factor out an elf_str() function</title>
<updated>2026-03-30T05:01:53+00:00</updated>
<author>
<name>John Hubbard</name>
<email>jhubbard@nvidia.com</email>
</author>
<published>2026-03-26T01:38:39+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=7c50d748b4a635bc39802ea3f6b120e66b1b9067'/>
<id>7c50d748b4a635bc39802ea3f6b120e66b1b9067</id>
<content type='text'>
Factor out a chunk of complexity into a new subroutine. This is an
incremental step in adding ELF32 support to the existing ELF64 section
support, for handling GPU firmware.

Signed-off-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Acked-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Link: https://patch.msgid.link/20260326013902.588242-9-jhubbard@nvidia.com
[acourbot: use fuller prefix in commit message.]
Signed-off-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Factor out a chunk of complexity into a new subroutine. This is an
incremental step in adding ELF32 support to the existing ELF64 section
support, for handling GPU firmware.

Signed-off-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Acked-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Link: https://patch.msgid.link/20260326013902.588242-9-jhubbard@nvidia.com
[acourbot: use fuller prefix in commit message.]
Signed-off-by: Alexandre Courbot &lt;acourbot@nvidia.com&gt;
</pre>
</div>
</content>
</entry>
</feed>
