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qcom-laptops
226
Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 Linus Torvalds
|
2e05544060 |
Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "taskstats: fix TGID dead-thread stat retention" (Yiyang Chen)
Fix a taskstats TGID aggregation bug where fields added in the TGID
query path were not preserved after thread exit, and adds a kselftest
covering the regression.
- "lib/tests: string_helpers: Slight improvements" (Andy Shevchenko)
Improve lib/tests/string_helpers_kunit.c a little
- "lib/base64: decode fixes" (Josh Law)
Address minor issues in lib/base64.c
- "selftests/filelock: Make output more kselftestish" (Mark Brown)
Make the output from the ofdlocks test a bit easier for tooling to
work with. Also ignore the generated file
- "uaccess: unify inline vs outline copy_{from,to}_user() selection"
(Yury Norov)
Simplify the usercopy code by removing the selectability of inlining
copy_{from,to}_user().
- "ocfs2: validate inline xattr header consumers" (ZhengYuan Huang)
Fix a number of possible issues in the ocfs2 xattr code
- "lib and lib/cmdline enhancements" (Dmitry Antipov)
Provide additional robustness checking in the cmdline handling code
and its in-kernel testing and selftests
- "cleanup the RAID6 P/Q library" (Christoph Hellwig)
Clean up the RAID6 P/Q library to match the recent updates to the
RAID 5 XOR library and other CRC/crypto libraries
- "ocfs2: harden inode validators against forged metadata" (Michael
Bommarito)
Add three structural checks to OCFS2 dinode validation so malformed
on-disk fields are rejected before ocfs2_populate_inode() copies them
into the in-core inode
- "lib/raid: replace __get_free_pages() call with kmalloc()" (Mike
Rapoport)
Clean up the lib/raid code by using kmalloc() in more places
* tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (108 commits)
ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write
ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits
lib: interval_tree_test: validate benchmark parameters
ocfs2: avoid moving extents to occupied clusters
treewide: fix transposed "sign" typos and update spelling.txt
ocfs2: fix UBSAN array-index-out-of-bounds in ocfs2_sum_rightmost_rec
fat: reject BPB volumes whose data area starts beyond total sectors
selftests/uevent: increase __UEVENT_BUFFER_SIZE to avoid ENOBUFS on busy systems
lib/test_firmware: allocate the configured into_buf size
fs: efs: remove unneeded debug prints
checkpatch: cuppress warnings when Reported-by: is followed by Link:
MAINTAINERS: add Alexander as a kcov reviewer
mailmap: update Alexander Sverdlin's Email addresses
fs: fat: inode: replace sprintf() with scnprintf()
ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent
ocfs2: fix race between ocfs2_control_install_private() and ocfs2_control_release()
ocfs2/dlm: require a ref for locking_state debugfs open
ocfs2: reject FITRIM ranges shorter than a cluster
ocfs2: validate fast symlink target during inode read
ocfs2: add journal NULL check in ocfs2_checkpoint_inode()
...
|
||
|
Linus Torvalds
|
4b99990cdf |
Merge tag 'drm-next-2026-06-17' of https://gitlab.freedesktop.org/drm/kernel
Pull drm updates from Dave Airlie:
"Highlights:
- xe: add initial CRI platform support
- amdgpu: initial HDMI 2.1 FRL support
- rust: add some new type concepts for device lifetimes
- scheduler: moves to a fair algorithm and lots of cleanups
But it's mostly the usual mountain of changes across the board.
core:
- add docbook for DRM_IOCTL_SYNCOBJ_EVENTFD
- change signature of drm_connector_attach_hdr_output_metadata_property
- dedup counter and timestamp retrieval in vblank code
- parse AMD VSDB v3 in CTA extension blocks
- add P230, Y7, XYYY2101010, T430, XVUY210101010 formats
- don't call drop master on file close if not master
- use drm_printf_indent in atomic / bridge
- fix 32b format descriptions
- docs: fix toctree
- hdmi: add common TMDS character rates
- fix drm_syncobj_find_fence leak
rust:
- introduce Higher-Ranked lifetime types
- replace drvdata with scoped registration data
- add GPUVM immediate mode abstraction for rust GPU drivers
- introduce DeviceContext type state for drm::Device
bridge:
- clarify drm_bridge_get/put
- create drm_get_bridge_by_endpoint and use it
- analogix_dp: add panel probing
- ite-it6211 - use drm audio hdmi helpers
buddy:
- add lockdep annotations
dp:
- add PR and VRR updates
- mst: fix buffer overflows
- add Adaptive Sync SDP decoding support
- fix OOB reads in dp-mst
ttm:
- bump fpfn/lpfn to 64-bit
scheduler:
- change default to fair scheduler
- map runqueue 1:1 with scheduler
dma-buf:
- port selftests to kunit
- convert dma-buf system/heap allocators to module
- add separate DMABUF_HEAPS_SYSTEM_CC_SHARED Kconfig
udmabuf:
- revert hugetlb support
- fix error with CONFIG_DMA_API_DEBUG
dma-fence:
- fix tracepoints lifetime
- remove unused signal on any support
ras:
- add clear error counter netlink command to drm ras
gpusvm:
- reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges
- use IOVA allocations
pagemap:
- use IOVA allocations
panels:
- update to use ref counts
- add support for CSW PNB601LS1-2, LGD LP116WHA-SPB1
- add support for waveshare panels
- CMN N116BCN-EA1, CMN N140HCA-EEK, IVO M140NWFQ R5,
- IVO, R140NWFW R0, BOE NT140*, BOE NV133FHM-N4F,
- AUO B140*, AUO B133HAN06.6 and AUO B116XTN02.3 eDP panels
- Surface Pro 12 Panel
xe:
- add CRI PCI-IDs
- debugfs add multi-lrc info
- engine init cleanup
- PF fair scheduling auto provisioning
- system controller support for CRI/Xe3p
- PXP state machine fixes
- Reset/wedge/unload corner case fixes
- Wedge path memory allocation fixes
- PAT type cleanups
- Reject unsafe PAT for CPU cached memory
- OA improvements for CRI device memory
- kernel doc syntax in xe headers
- xe_drm.h documentation fixes
- include guard cleanups
- VF CCS memory pool
- i915/xe step unification
- Xe3p GT tuning fixes
- forcewake cleanup in GT and GuC
- admin-only PF mode
- enable hwmon energy attributes for CRI
- enable GT_MI_USER_INTERRUPT
- refactor emit functions
- oa workarounds
- multi_queue: allow QUEUE_TIMESTAMP register
- convert stolen memory to ttm range manager
- use xe2 style blitter as a feature flag
- make drm_driver const
- add/use IRQ page to HW engine definition
- fix oops when display disabled
i915:
- enable PIPEDMC_ERROR interrupt
- more common display code refactoring
- restructure DP/HDMI sink format handling
- eliminate FB usage from lowlevel pinning code
- panel replay bw optimization
- integrate sharpness filter into the scaler
- new fb_pin abstraction for xe/i915 fb transparent handling
- skip inactive MST connectors on HDCP
- start switching to display specific registers
- use polling when irq unavailable
- Adaptive-sync SDP prep
amdgpu:
- use drm_display_info for AMD VSDB data
- Initial HDMI 2.1 FRL support
- Initial DCN 4.2.1 support
- GART fixes for non-4k pages
- GC 11.5.6/SDMA 6.4.0/and other new IPs
- GFX9/DCE6/Hawaii/SDMA4/GART/Userq fixes
- Finish support for using multiple SDMA queues for TTM operations
- SWSMU updates
- GC 12.1 updates
- SMU 15.0.8 updates
- DCN 4.2 updates
- DC type conversion fixes
- Enable DC power module
- Replay/PSR updates
- SMU 13.x updates
- Compute queue quantum MQD updates
- ASPM fix
- Align VKMS with common implementation
- DC analog support fixes
- UVD 3 fixes
- TCC harvesting fixes for SI
- GC 11 APU module reload fix
- NBIO 6.3.2 support
- IH 7.1 updates
- DC cursor fixes
- VCN/JPEG user fence fixes
- DC support for connectors without DDC
- Prefer ROM BAR for default VGA device
- DC bandwidth fixes
- Add PTL support for profiler
- Introduce dc_plane_cm and migrate surface update color path
- Add FRL registers for HDMI 2.1
- Restructure VM state machine
- Auxless ALPM support
- GEM_OP locking/warning fixes
- switch to system_dfl_wq
amdkfd:
- GPUVM TLB flush fix
- Hotplug fix
- Boundary check fixes
- SVM fixes
- CRIU fixes
- add profiler API
- MES 12.1 updates
msm:
- core:
- fix shrinker documentation
- IFPC enabled for gen8
- PERFCNTR_CONFIG ioctl support
- GPU:
- reworked UBWC handling
- a810 support
- MDSS:
- add support for Milos platform
- reworked UBWC handling
- DisplayPort:
- reworked HPD handling as prep for MST
- DPU:
- Milos platform support
- reworked UBWC handling
- DSI:
- Milos platform support
nova:
- Hopper/Blackwell enablement (GH100/GB100/GB202)
- FSP support
- 32-bit firmware support
- HAL functions
- refactor GSP boot/unload
- GA100 support
- VBIOS hardening/refactoring
- Adopt higher order lifetime types
tyr:
- define register blocks
- add shmem backed GEM objects
- adopt higher order lifetime types
- move clock cleanup into Drop
radeon:
- Hawaii SMU fixes
- CS parser fix
- use struct drm_edid instead of edid
amdxdna:
- export per-client BO memory via fdinfo
- AIE4 device support
- support medium/lower power modes
- expandable device heap support
- revert read-only user-pointer BO mappings
ivpu:
- support frequency limiting
panthor:
- enable GEM shrinker support
- add eviction and reclaim info to fdinfo
v3d:
- enable runtime PM
mgag200:
- support XRGB1555 + C8
ast:
- support XRGB1555 + C8
- use constants for lots of registers
- fix register handling
imagination:
- fence handling refactoring
nouveau:
- fix sched double call
- expose VBIOS on GSP-RM systems
- add GA100 support
virtio:
- add VIRTIO_GPU_F_BLOB_ALIGNMENT flag
- add deferred mapping support
gud:
- add RCade Display Adapter
hibmc:
- fix no connectors usage
mediatek:
- hdmi: convert error handling
- simplify mtk_crtc allocation
exynos:
- move fbdev emulation to drm client buffers
- use drm format helpers for geometry/size
- adopt core DMA tracking
- fix framebuffer offset handling
renesas:
- add RZ/T2H SOC support
versilicon:
- add cursor plane support
tegra:
- use drm client for framebuffer"
* tag 'drm-next-2026-06-17' of https://gitlab.freedesktop.org/drm/kernel: (1731 commits)
dma-buf: move system_cc_shared heap under separate Kconfig
accel/amdxdna: Clear sva pointer after unbind
agp/amd64: Fix broken error propagation in agp_amd64_probe()
accel/amdxdna: Require carveout when PASID and force_iova are disabled
drm/amdkfd: always resume_all after suspend_all
drm/amdgpu/gfx: move fault and EOP IRQ get/put to hw_init/hw_fini
drm/amd/display: Consult MCCS FreeSync cap only if requested & supported
drm/amd/pm: Use strscpy in profile mode parsing
drm/amdkfd: Fix infinite loop parsing CRAT with zero subtype length
drm/amdkfd: fix sysfs topology prop length on buffer truncation
drm/amdgpu: drop retry loop in amdgpu_hmm_range_get_pages
drm/amd/pm: bound OD parameter parsing to stack array size
drm/amd/pm: Stop pp_od_clk_voltage emit at PAGE_SIZE
drm/amdkfd: Unwind debug trap enable on copy_to_user failure
drm/amdgpu: validate the mes firmware version for gfx12.1
drm/amdgpu: validate the mes firmware version for gfx12
drm/amdgpu: compare MES firmware version ucode for gfx11
drm/amdkfd: Add bounds check for AMDKFD_IOC_WAIT_EVENTS
drm/amdgpu: restart the CS if some parts of the VM are still invalidated
drm/amd/display: use unsigned types for local pipe and REG_GET counters
...
|
||
|
Linus Torvalds
|
25a01b5155 |
Merge tag 's390-7.2-1' of gitolite.kernel.org:pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Alexander Gordeev: - Use CIO device online variable instead of the internal FSM state to determine device availability during purge operations - Remove extra check of task_stack_page() because try_get_task_stack() already takes care of that when reading /proc/<pid>/wchan - Allow user-space to use the new SCLP action qualifier 4 for to provide NVMe SMART log data to the platform. - Send AP CHANGE uevents on successful bind and successful association to notify user-space about SE operations on AP queue devices - Add an s390dbf kernel parameter to configure debug log levels and area sizes during early boot - On arm64 the empty zero page is going to be mapped read-only. Do the same for s390 with an explicit set_memory_ro() call - Improve s390-specific bcr_serialize() and cpu_relax() implementations - Remove all unused variables to avoid allmodconfig W=1 build fails with latest clang-23 - Cleanup default Kconfig values for s390 selftests - Add a s390-tod trace clock to allow comparing trace timestamps between different systems or virtual machines on s390 - Remove the s390 implementation of strlcat() in favor of the generic variant - Make consistent the calling order between page_table_check_pte_clear() and secure page conversion across all code paths - Rearrange some fields within AP and zcrypt structs to reduce memory consumption and unused holes - Shorten GR_NUM and VX_NUM macros and move them to a separate header - Replace __get_free_page() with kmalloc() in few sources - Introduce an infrastructure for more efficient this_cpu operations. Eliminate conditional branches when PREEMPT_NONE is removed - Enable Rust support - Use z10 as minimum architecture level, similar to the boot code, to enforce a defined architecture level set - Improve and convert various mem*() helper functions to C. For that add .noinstr.text section to avoid orphaned warnings from the linker - Fix the function pointer type in __ret_from_fork() to correct the indirect call to match kernel thread return type of int - Revert support for DCACHE_WORD_ACCESS to avoid an endless exception loop on read from donated Ultravisor pages at unaligned addresses * tag 's390-7.2-1' of gitolite.kernel.org:pub/scm/linux/kernel/git/s390/linux: (52 commits) s390: Revert support for DCACHE_WORD_ACCESS s390/process: Fix kernel thread function pointer type s390/tishift: Convert __ashlti3(), __ashrti3(), __lshrti3() to C s390/memmove: Optimize backward copy case s390/string: Convert memset(16|32|64)() to C s390/string: Convert memcpy() to C s390/string: Convert memset() to C s390/string: Convert memmove() to C s390/string: Add -ffreestanding compile option to string.o s390: Add .noinstr.text to boot and purgatory linker scripts s390/purgatory: Enforce z10 minimum architecture level s390: Enable Rust support s390/cmpxchg: Fix KASAN stack-out-of-bounds in atomic helpers rust: helpers: Add memchr wrapper for string operations rust/bindgen_parameters: Mark s390 types as opaque to prevent repr conflicts s390/jump_label: Implement ARCH_STATIC_BRANCH_JUMP_ASM and ARCH_STATIC_BRANCH_ASM macros s390/bug: Provide ARCH_WARN_ASM for Rust WARN/BUG support s390/ap: Fix locking issue in SE bind and associate sysfs functions s390/percpu: Provide arch_this_cpu_write() implementation s390/percpu: Provide arch_this_cpu_read() implementation ... |
||
|
Linus Torvalds
|
36808d5e98 |
Merge tag 'driver-core-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core
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<'a> and IoMem<'a> 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<'bound>
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<T>
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
...
|
||
  Jan PolenskyandAlexander Gordeev
|
71247e71a4 |
rust: helpers: Add memchr wrapper for string operations
Add a dedicated string helper file with a memchr wrapper that uses the kernel's instrumented memchr() function to ensure KASAN and FORTIFY_SOURCE protections are preserved for Rust code. Reported-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Link: https://lore.kernel.org/rust-for-linux/CANiq72mXAZc0sNM7ShX8VDVs_7zJddawP-e=wt+ERr1YUCcWUw@mail.gmail.com/ Signed-off-by: Jan Polensky <japo@linux.ibm.com> Acked-by: Heiko Carstens <hca@linux.ibm.com> Acked-by: Gary Guo <gary@garyguo.net> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> |
||
  Yury NorovandAndrew Morton
|
c02be2ad2b |
uaccess: unify inline vs outline copy_{from,to}_user() selection
The kernel allows arches to select between inline and outline
implementations of the copy_{from,to}_user() by defining individual
INLINE_COPY_FROM_USER and INLINE_COPY_TO_USER, correspondingly. However,
all arches enable or disable them always together.
Without the real use-case for one helper being inlined while the other
outlined, having independent controls is excessive and error prone.
Switch the codebase to the single unified INLINE_COPY_USER control.
Link: https://lore.kernel.org/20260425020857.356850-3-ynorov@nvidia.com
Signed-off-by: Yury Norov <ynorov@nvidia.com>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Viktor Malik <vmalik@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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|
Yury NorovandAndrew Morton
|
f829d4d911 |
rust: uaccess: use INLINE_COPY_TO_USER to guard copy_to_user()
Patch series "uaccess: unify inline vs outline copy_{from,to}_user()
selection", v2.
The kernel allows arches to select between inline and outline
implementations of the copy_{from,to}_user() by defining individual
INLINE_COPY_FROM_USER and INLINE_COPY_TO_USER, correspondingly. However,
all arches enable or disable them always together.
Without the real use-case for one helper being inlined while the other
outlined, having independent controls is excessive and error prone.
The first patch of the series fixes rust/uaccess coppy_to_user() wrapper
guarded with INLINE_COPY_FROM_USER. The 2nd patch switches codebase to
the unified INLINE_COPY_USER. And the last patch cleans up ifdefery in
the include/linux/uaccess.h
This patch (of 3):
The copy_to_user() rust helper is only needed when the main kernel inlines
the function. It is controlled by INLINE_COPY_TO_USER, but the rust
helper is protected with INLINE_COPY_FROM_USER.
Fix that.
Link: https://lore.kernel.org/20260425020857.356850-1-ynorov@nvidia.com
Link: https://lore.kernel.org/20260425020857.356850-2-ynorov@nvidia.com
Fixes:
|
||
  Shivam KalraandMiguel Ojeda
|
880fa3a1e5 |
rust: helpers: add is_vmalloc_addr wrapper for NOMMU builds
Commit |
||
  Alice RyhlandDanilo Krummrich
|
37f748ed0c |
drm/gpuvm: rust: add RUST_DRM_GPUVM option to Kconfig
Since Rust uses GPUVM via the kernel crate, which is built-in, the GPUVM module must also be built-in to use GPUVM from Rust. Adjust the Kconfig settings accordingly. Suggested-by: Danilo Krummrich <dakr@kernel.org> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://patch.msgid.link/20260427-gpuvm-config-v1-1-8ece03771f8a@google.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Alice RyhlandDanilo Krummrich
|
71a3921111 |
rust: gpuvm: add GpuVm::obtain()
This provides a mechanism to create (or look up) VMBO instances, which represent the mapping between GPUVM and GEM objects. The GpuVmBoRegistered<T> type can be considered like ARef<GpuVm<T>>, except that no way to increment the refcount is provided. The GpuVmBoAlloc<T> type is more akin to a pre-allocated GpuVmBo<T>, so it's not really a GpuVmBo<T> yet. Its destructor could call drm_gpuvm_bo_destroy_not_in_lists(), but as the type is currently private and never called anywhere, this perf optimization does not need to happen now. Pre-allocating and obtaining the gpuvm_bo object is exposed as a single step. This could theoretically be a problem if one wanted to call drm_gpuvm_bo_obtain_prealloc() during the fence signalling critical path, but that's not a possibility because: 1. Adding the BO to the extobj list requires the resv lock, so it cannot happen during the fence signalling critical path. 2. obtain() requires that the BO is not in the extobj list, so obtain() must be called before adding the BO to the extobj list. Thus, drm_gpuvm_bo_obtain_prealloc() cannot be called during the fence signalling critical path. (For extobjs at least.) Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://patch.msgid.link/20260409-gpuvm-rust-v6-2-b16e6ada7261@google.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
 Asahi LinaandDanilo Krummrich
|
82b78182ea |
rust: drm: add base GPUVM immediate mode abstraction
Add a GPUVM abstraction to be used by Rust GPU drivers. GPUVM keeps track of a GPU's virtual address (VA) space and manages the corresponding virtual mappings represented by "GPU VA" objects. It also keeps track of the gem::Object<T> used to back the mappings through GpuVmBo<T>. This abstraction is only usable by drivers that wish to use GPUVM in immediate mode. This allows us to build the locking scheme into the API design. It means that the GEM mutex is used for the GEM gpuva list, and that the resv lock is used for the extobj list. The evicted list is not yet used in this version. This abstraction provides a special handle called the UniqueRefGpuVm, which is a wrapper around ARef<GpuVm> that provides access to the interval tree. Generally, all changes to the address space requires mutable access to this unique handle. Signed-off-by: Asahi Lina <lina+kernel@asahilina.net> Co-developed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Co-developed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://patch.msgid.link/20260409-gpuvm-rust-v6-1-b16e6ada7261@google.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
 Markus ProbstandDanilo Krummrich
|
2690d07158 |
rust: ACPI: fix missing match data for PRP0001
Export `acpi_of_match_device` function and use it to match the of device
table against ACPI PRP0001 in Rust.
This fixes id_info being None on ACPI PRP0001 devices.
Using `device_get_match_data` is not possible, because Rust stores an
index in the of device id instead of a data pointer. This was done this
way to provide a convenient and obvious API for drivers, which can be
evaluated in const context without the use of any unstable language
features.
Fixes:
|
||
|
Linus Torvalds
|
4a57e0913e |
Merge tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel
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<T> 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
...
|
||
|
Linus Torvalds
|
7393febcb1 |
Merge tag 'locking-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Mutexes:
- Add killable flavor to guard definitions (Davidlohr Bueso)
- Remove the list_head from struct mutex (Matthew Wilcox)
- Rename mutex_init_lockep() (Davidlohr Bueso)
rwsems:
- Remove the list_head from struct rw_semaphore and
replace it with a single pointer (Matthew Wilcox)
- Fix logic error in rwsem_del_waiter() (Andrei Vagin)
Semaphores:
- Remove the list_head from struct semaphore (Matthew Wilcox)
Jump labels:
- Use ATOMIC_INIT() for initialization of .enabled (Thomas Weißschuh)
- Remove workaround for old compilers in initializations
(Thomas Weißschuh)
Lock context analysis changes and improvements:
- Add context analysis for rwsems (Peter Zijlstra)
- Fix rwlock and spinlock lock context annotations (Bart Van Assche)
- Fix rwlock support in <linux/spinlock_up.h> (Bart Van Assche)
- Add lock context annotations in the spinlock implementation
(Bart Van Assche)
- signal: Fix the lock_task_sighand() annotation (Bart Van Assche)
- ww-mutex: Fix the ww_acquire_ctx function annotations
(Bart Van Assche)
- Add lock context support in do_raw_{read,write}_trylock()
(Bart Van Assche)
- arm64, compiler-context-analysis: Permit alias analysis through
__READ_ONCE() with CONFIG_LTO=y (Marco Elver)
- Add __cond_releases() (Peter Zijlstra)
- Add context analysis for mutexes (Peter Zijlstra)
- Add context analysis for rtmutexes (Peter Zijlstra)
- Convert futexes to compiler context analysis (Peter Zijlstra)
Rust integration updates:
- Add atomic fetch_sub() implementation (Andreas Hindborg)
- Refactor various rust_helper_ methods for expansion (Boqun Feng)
- Add Atomic<*{mut,const} T> support (Boqun Feng)
- Add atomic operation helpers over raw pointers (Boqun Feng)
- Add performance-optimal Flag type for atomic booleans, to avoid
slow byte-sized RMWs on architectures that don't support them.
(FUJITA Tomonori)
- Misc cleanups and fixes (Andreas Hindborg, Boqun Feng, FUJITA
Tomonori)
LTO support updates:
- arm64: Optimize __READ_ONCE() with CONFIG_LTO=y (Marco Elver)
- compiler: Simplify generic RELOC_HIDE() (Marco Elver)
Miscellaneous fixes and cleanups by Peter Zijlstra, Randy Dunlap,
Thomas Weißschuh, Davidlohr Bueso and Mikhail Gavrilov"
* tag 'locking-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
compiler: Simplify generic RELOC_HIDE()
locking: Add lock context annotations in the spinlock implementation
locking: Add lock context support in do_raw_{read,write}_trylock()
locking: Fix rwlock support in <linux/spinlock_up.h>
lockdep: Raise default stack trace limits when KASAN is enabled
cleanup: Optimize guards
jump_label: remove workaround for old compilers in initializations
jump_label: use ATOMIC_INIT() for initialization of .enabled
futex: Convert to compiler context analysis
locking/rwsem: Fix logic error in rwsem_del_waiter()
locking/rwsem: Add context analysis
locking/rtmutex: Add context analysis
locking/mutex: Add context analysis
compiler-context-analysys: Add __cond_releases()
locking/mutex: Remove the list_head from struct mutex
locking/semaphore: Remove the list_head from struct semaphore
locking/rwsem: Remove the list_head from struct rw_semaphore
rust: atomic: Update a safety comment in impl of `fetch_add()`
rust: sync: atomic: Update documentation for `fetch_add()`
rust: sync: atomic: Add fetch_sub()
...
|
||
 Gary GuoandMiguel Ojeda
|
db702816ad |
rust: helpers: #define __rust_helper
Because of LLVM inling checks, it's generally not possible to inline a C helper into Rust code, even with LTO: * LLVM doesn't want to inline functions compiled with `-fno-delete-null-pointer-checks` with code compiled without. The C CGUs all have this enabled and Rust CGUs don't. Inlining is okay since this is one of the hardening features that does not change the ABI, and we shouldn't have null pointer dereferences in these helpers. * LLVM doesn't want to inline functions with different list of builtins. C side has `-fno-builtin-wcslen`; `wcslen` is not a Rust builtin, so they should be compatible, but LLVM does not perform inlining due to attributes mismatch. * clang and Rust doesn't have the exact target string. Clang generates `+cmov,+cx8,+fxsr` but Rust doesn't enable them (in fact, Rust will complain if `-Ctarget-feature=+cmov,+cx8,+fxsr` is used). x86-64 always enable these features, so they are in fact the same target string, but LLVM doesn't understand this and so inlining is inhibited. This can be bypassed with `--ignore-tti-inline-compatible`, but this is a hidden option. To fix this, we can add __always_inline on every helper, which skips these LLVM inlining checks. For this purpose, introduce a new __rust_helper macro that needs to be added to every helper. Most helpers already have __rust_helper specified, but there are a few missing. The only consequence of this is that those specific helpers do not get inlined. Signed-off-by: Gary Guo <gary@garyguo.net> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://patch.msgid.link/20260203-inline-helpers-v2-2-beb8547a03c9@google.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
||
 Asahi LinaandDanilo Krummrich
|
80df573af9 |
rust: drm: gem: shmem: Add DRM shmem helper abstraction
The DRM shmem helper includes common code useful for drivers which allocate GEM objects as anonymous shmem. Add a Rust abstraction for this. Drivers can choose the raw GEM implementation or the shmem layer, depending on their needs. Signed-off-by: Asahi Lina <lina@asahilina.net> Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Janne Grunau <j@jananu.net> Tested-by: Deborah Brouwer <deborah.brouwer@collabora.com> Link: https://patch.msgid.link/20260316211646.650074-6-lyude@redhat.com [ * DRM_GEM_SHMEM_HELPER is a tristate; when a module driver selects it, it becomes =m. The Rust kernel crate and its C helpers are always built into vmlinux and can't reference symbols from a module, causing link errors. Thus, add RUST_DRM_GEM_SHMEM_HELPER bool Kconfig that selects DRM_GEM_SHMEM_HELPER, forcing it built-in when Rust drivers need it; use cfg(CONFIG_RUST_DRM_GEM_SHMEM_HELPER) for the shmem module. * Add cfg_attr(not(CONFIG_RUST_DRM_GEM_SHMEM_HELPER), expect(unused)) on pub(crate) use impl_aref_for_gem_obj and BaseObjectPrivate, so that unused warnings are suppressed when shmem is not enabled. * Enable const_refs_to_static (stabilized in 1.83) to prevent build errors with older compilers. * Use &raw const for bindings::drm_gem_shmem_vm_ops and add #[allow(unused_unsafe, reason = "Safe since Rust 1.82.0")]. * Fix incorrect C Header path and minor spelling and formatting issues. * Drop shmem::Object::sg_table() as the current implementation is unsound. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Asahi LinaandDanilo Krummrich
|
9b836641d3 |
rust: helpers: Add bindings/wrappers for dma_resv_lock
This is just for basic usage in the DRM shmem abstractions for implied locking, not intended as a full DMA Reservation abstraction yet. Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Christian König <christian.koenig@amd.com> Signed-off-by: Asahi Lina <lina+kernel@asahilina.net> Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Janne Grunau <j@jannau.net> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Acked-by: David Airlie <airlied@gmail.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://patch.msgid.link/20260320-gpuvm-rust-v5-2-76fd44f17a87@google.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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 Timur TabiandDanilo Krummrich
|
d35ae50c5f |
rust: device: add device name method
Add a name() method to the `Device` type, which returns a CStr that contains the device name. Signed-off-by: Timur Tabi <ttabi@nvidia.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Gary Guo <gary@garyguo.net> Tested-by: John Hubbard <jhubbard@nvidia.com> Tested-by: Eliot Courtney <ecourtney@nvidia.com> Link: https://patch.msgid.link/20260319212658.2541610-2-ttabi@nvidia.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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 Joel FernandesandDanilo Krummrich
|
b9616d9721 |
rust: gpu: Add GPU buddy allocator bindings
Add safe Rust abstractions over the Linux kernel's GPU buddy allocator for physical memory management. The GPU buddy allocator implements a binary buddy system useful for GPU physical memory allocation. nova-core will use it for physical memory allocation. Cc: Nikola Djukic <ndjukic@nvidia.com> Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Link: https://patch.msgid.link/20260320045711.43494-2-joelagnelf@nvidia.com [ * Use doc-comments for GpuBuddyAllocMode methods and GpuBuddyGuard, * Fix comma splice in GpuBuddyParams::chunk_size doc-comment, * Remove redundant summary in GpuBuddy::new doc-comment, * Drop Rust helper for gpu_buddy_block_size(). - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
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Joel FernandesandDanilo Krummrich
|
f9f0b4a1f3 |
rust: interop: Add list module for C linked list interface
Add a new module `kernel::interop::list` for working with C's doubly circular linked lists. Provide low-level iteration over list nodes. Typed iteration over actual items is provided with a `clist_create` macro to assist in creation of the `CList` type. Cc: Nikola Djukic <ndjukic@nvidia.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Acked-by: Alexandre Courbot <acourbot@nvidia.com> Acked-by: Gary Guo <gary@garyguo.net> Acked-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com> Link: https://patch.msgid.link/20260319210722.1543776-1-joelagnelf@nvidia.com [ * Remove stray empty comment and double blank line in doctest, * Improve wording and fix a few typos, * Use markdown emphasis instead of caps, * Move interop/mod.rs to interop.rs. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
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Alice RyhlandMiguel Ojeda
|
f4040a7c3d |
rust: jump_label: add __rust_helper to helpers
This is needed to inline these helpers into Rust code. Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Gary Guo <gary@garyguo.net> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20260105-define-rust-helper-v2-9-51da5f454a67@google.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
||
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Alice RyhlandMiguel Ojeda
|
15536a3b3c |
rust: clk: add __rust_helper to helpers
This is needed to inline these helpers into Rust code. Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Gary Guo <gary@garyguo.net> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Acked-by: Stephen Boyd <sboyd@kernel.org> Link: https://patch.msgid.link/20260105-define-rust-helper-v2-4-51da5f454a67@google.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
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  Boqun FengandPeter Zijlstra
|
ac8f06ade3 |
rust: sync: atomic: Add Atomic<*{mut,const} T> support
Atomic pointer support is an important piece of synchronization algorithm, e.g. RCU, hence provide the support for that. Note that instead of relying on atomic_long or the implementation of `Atomic<usize>`, a new set of helpers (atomic_ptr_*) is introduced for atomic pointer specifically, this is because ptr2int casting would lose the provenance of a pointer and even though in theory there are a few tricks the provenance can be restored, it'll still be a simpler implementation if C could provide atomic pointers directly. The side effects of this approach are: we don't have the arithmetic and logical operations for pointers yet and the current implementation only works on ARCH_SUPPORTS_ATOMIC_RMW architectures, but these are implementation issues and can be added later. Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Gary Guo <gary@garyguo.net> Reviewed-by: FUJITA Tomonori <fujita.tomonori@gmail.com> Link: https://patch.msgid.link/20260120140503.62804-3-boqun.feng@gmail.com Link: https://patch.msgid.link/20260303201701.12204-8-boqun@kernel.org |
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Boqun FengandPeter Zijlstra
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a92236bf23 |
rust: helpers: Generify the definitions of rust_helper_*_cmpxchg*
To support atomic pointers, more cmpxchg helpers will be introduced, hence define macros to generate these helpers to ease the introduction of the future helpers. Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20260117122243.24404-4-boqun.feng@gmail.com Link: https://patch.msgid.link/20260303201701.12204-6-boqun@kernel.org |
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Boqun FengandPeter Zijlstra
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f92d22b00e |
rust: helpers: Generify the definitions of rust_helper_*_xchg*
To support atomic pointers, more xchg helpers will be introduced, hence define macros to generate these helpers to ease the introduction of the future helpers. Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20260117122243.24404-3-boqun.feng@gmail.com Link: https://patch.msgid.link/20260303201701.12204-5-boqun@kernel.org |