Merge tag 'drm-rust-next-2026-03-30' of https://gitlab.freedesktop.org/drm/rust/kernel into drm-next

DRM Rust changes for v7.1-rc1

- DMA:
  - Rework the DMA coherent API: introduce Coherent<T> as a generalized
    container for arbitrary types, replacing the slice-only
    CoherentAllocation<T>. Add CoherentBox for memory initialization
    before exposing a buffer to hardware (converting to Coherent when
    ready), and CoherentHandle for allocations without kernel mapping.

  - Add Coherent::init() / init_with_attrs() for one-shot initialization
    via pin-init, and from-slice constructors for both Coherent and
    CoherentBox

  - Add uaccess write_dma() for copying from DMA buffers to userspace
    and BinaryWriter support for Coherent<T>

- DRM:
  - 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 impl_aref_for_gem_obj!() macro to reduce GEM refcount
    boilerplate, and introduce DriverObject::Args for constructor
    context

  - Add dma_resv_lock helper and raw_dma_resv() accessor on GEM objects

  - Clean up imports across the DRM module

- I/O:
  - Merged via a signed tag from the driver-core tree: register!() macro
    and I/O infrastructure improvements (IoCapable refactor, RelaxedMmio
    wrapper, IoLoc trait, generic accessors, write_reg /
    LocatedRegister)

- Nova (Core):
  - Fix and harden the GSP command queue: correct write pointer
    advancing, empty slot handling, and ring buffer indexing; add mutex
    locking and make Cmdq a pinned type; distinguish wait vs no-wait
    commands

  - Add support for large RPCs via continuation records, splitting
    oversized commands across multiple queue slots

  - Simplify GSP sequencer and message handling code: remove unused
    trait and Display impls, derive Debug and Zeroable where applicable,
    warn on unconsumed message data

  - Refactor Falcon firmware handling: create DMA objects lazily, add
    PIO upload support, and use the Generic Bootloader to boot FWSEC on
    Turing

  - Convert all register definitions (PMC, PBUS, PFB, GC6, FUSE, PDISP,
    Falcon) to the kernel register!() macro; add bounded_enum macro to
    define enums usable as register fields

  - Migrate all DMA usage to the new Coherent, CoherentBox, and
    CoherentHandle APIs

  - Harden firmware parsing with checked arithmetic throughout FWSEC,
    Booter, RISC-V parsing paths

  - Add debugfs support for reading GSP-RM log buffers; replace
    module_pci_driver!() with explicit module init to support
    module-level debugfs setup

  - Fix auxiliary device registration for multi-GPU systems

  - Various cleanups: import style, firmware parsing refactoring,
    framebuffer size logging

- Rust:
  - Add interop::list module providing a C linked list interface

  - Extend num::Bounded with shift operations, into_bool(), and const
    get() to support register bitfield manipulation

  - Enable the generic_arg_infer Rust feature and add EMSGSIZE error
    code

- Tyr:
  - Adopt vertical import style per kernel Rust guidelines

  - Clarify driver/device type names and use DRM device type alias
    consistently across the driver

  - Fix GPU model/version decoding in GpuInfo

- Workqueue:
  - Add ARef<T> support for work and delayed work

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: "Danilo Krummrich" <dakr@kernel.org>
Link: https://patch.msgid.link/DHGH4BLT03BU.ZJH5U52WE8BY@kernel.org

1 files changed, 2 insertions, 1 deletions

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 3652b85be545..010d08472fb2 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -316,12 +316,13 @@ $(obj)/%.lst: $(obj)/%.c FORCE
 #     `feature(offset_of_nested)`, `feature(raw_ref_op)`.
 #   - Stable since Rust 1.84.0: `feature(strict_provenance)`.
 #   - Stable since Rust 1.87.0: `feature(asm_goto)`.
+#   - Stable since Rust 1.89.0: `feature(generic_arg_infer)`.
 #   - Expected to become stable: `feature(arbitrary_self_types)`.
 #   - To be determined: `feature(used_with_arg)`.
 #
 # Please see https://github.com/Rust-for-Linux/linux/issues/2 for details on
 # the unstable features in use.
-rust_allowed_features := asm_const,asm_goto,arbitrary_self_types,lint_reasons,offset_of_nested,raw_ref_op,slice_ptr_len,strict_provenance,used_with_arg
+rust_allowed_features := asm_const,asm_goto,arbitrary_self_types,generic_arg_infer,lint_reasons,offset_of_nested,raw_ref_op,slice_ptr_len,strict_provenance,used_with_arg
 
 # `--out-dir` is required to avoid temporaries being created by `rustc` in the
 # current working directory, which may be not accessible in the out-of-tree