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Message-ID: <20250928173541.229298-1-ojeda@kernel.org>
Date: Sun, 28 Sep 2025 19:35:40 +0200
From: Miguel Ojeda <ojeda@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Miguel Ojeda <ojeda@...nel.org>,
Alex Gaynor <alex.gaynor@...il.com>,
Boqun Feng <boqun.feng@...il.com>,
Gary Guo <gary@...yguo.net>,
Björn Roy Baron <bjorn3_gh@...tonmail.com>,
Benno Lossin <lossin@...nel.org>,
Andreas Hindborg <a.hindborg@...nel.org>,
Alice Ryhl <aliceryhl@...gle.com>,
Trevor Gross <tmgross@...ch.edu>,
Danilo Krummrich <dakr@...nel.org>,
rust-for-linux@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [GIT PULL] Rust for 6.18
Hi Linus,
This is the next round of the Rust support.
A small one this time. One of the trees I merge (pin-init) is going this
cycle through DRM for convenience.
No conflicts expected at this time. Nevertheless, I did a test merge and
tested it a bit and it seems fine.
When you merge other trees, you will have some. The resolutions in -next
should be fine, except for a `rustfmt` issue in one, so please remember
to double-check that on your merges (it may be solved by the time you
get to it).
All commits have been in linux-next for at least four rounds, most for
two weeks or more.
Please pull for v6.18 -- thanks!
Cheers,
Miguel
The following changes since commit 76eeb9b8de9880ca38696b2fb56ac45ac0a25c6c:
Linux 6.17-rc5 (2025-09-07 14:22:57 -0700)
are available in the Git repository at:
https://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux.git tags/rust-6.18
for you to fetch changes up to f3f6b3664302e16ef1c6b91034a72df5564d6b8a:
gpu: nova-core: use Alignment for alignment-related operations (2025-09-22 23:56:06 +0200)
----------------------------------------------------------------
Rust changes for v6.18
Toolchain and infrastructure:
- Derive 'Zeroable' for all structs and unions generated by 'bindgen'
where possible and corresponding cleanups. To do so, add the
'pin-init' crate as a dependency to 'bindings' and 'uapi'.
It also includes its first use in the 'cpufreq' module, with more to
come in the next cycle.
- Add warning to the 'rustdoc' target to detect broken 'srctree/' links
and fix existing cases.
- Remove support for unused (since v6.16) host '#[test]'s, simplifying
the 'rusttest' target. Tests should generally run within KUnit.
'kernel' crate:
- Add 'ptr' module with a new 'Alignment' type, which is always a power
of two and is used to validate that a given value is a valid
alignment and to perform masking and alignment operations:
// Checked at build time.
assert_eq!(Alignment::new::<16>().as_usize(), 16);
// Checked at runtime.
assert_eq!(Alignment::new_checked(15), None);
assert_eq!(Alignment::of::<u8>().log2(), 0);
assert_eq!(0x25u8.align_down(Alignment::new::<0x10>()), 0x20);
assert_eq!(0x5u8.align_up(Alignment::new::<0x10>()), Some(0x10));
assert_eq!(u8::MAX.align_up(Alignment::new::<0x10>()), None);
It also includes its first use in Nova.
- Add 'core::mem::{align,size}_of{,_val}' to the prelude, matching
Rust 1.80.0.
- Keep going with the steps on our migration to the standard library
'core::ffi::CStr' type (use 'kernel::{fmt, prelude::fmt!}' and use
upstream method names).
- 'error' module: improve 'Error::from_errno' and 'to_result'
documentation, including examples/tests.
- 'sync' module: extend 'aref' submodule documentation now that it
exists, and more updates to complete the ongoing move of 'ARef' and
'AlwaysRefCounted' to 'sync::aref'.
- 'list' module: add an example/test for 'ListLinksSelfPtr' usage.
- 'alloc' module:
- Implement 'Box::pin_slice()', which constructs a pinned slice of
elements.
- Provide information about the minimum alignment guarantees of
'Kmalloc', 'Vmalloc' and 'KVmalloc'.
- Take minimum alignment guarantees of allocators for
'ForeignOwnable' into account.
- Remove the 'allocator_test' (including 'Cmalloc').
- Add doctest for 'Vec::as_slice()'.
- Constify various methods.
- 'time' module:
- Add methods on 'HrTimer' that can only be called with exclusive
access to an unarmed timer, or from timer callback context.
- Add arithmetic operations to 'Instant' and 'Delta'.
- Add a few convenience and access methods to 'HrTimer' and
'Instant'.
'macros' crate:
- Reduce collections in 'quote!' macro.
And a few other cleanups and improvements.
----------------------------------------------------------------
Alexandre Courbot (2):
rust: add `Alignment` type
gpu: nova-core: use Alignment for alignment-related operations
Alice Ryhl (3):
rust: alloc: specify the minimum alignment of each allocator
rust: alloc: take the allocator into account for FOREIGN_ALIGN
rust: alloc: implement Box::pin_slice()
Benno Lossin (4):
rust: add `pin-init` as a dependency to `bindings` and `uapi`
rust: derive `Zeroable` for all structs & unions generated by bindgen where possible
rust: cpufreq: replace `MaybeUninit::zeroed().assume_init()` with `pin_init::zeroed()`
rust: sync: extend module documentation of aref
Boqun Feng (1):
rust: list: Add an example for `ListLinksSelfPtr` usage
Danilo Krummrich (1):
rust: alloc: add ARCH_KMALLOC_MINALIGN to bindgen blocklist
Hui Zhu (2):
rust: alloc: kvec: add doc example for as_slice method
rust: alloc: kvec: simplify KUnit test module name to "rust_kvec"
Lyude Paul (9):
rust: hrtimer: Document the return value for HrTimerHandle::cancel()
rust: hrtimer: Add HrTimerInstant
rust: hrtimer: Add HrTimer::raw_forward() and forward()
rust: hrtimer: Add HrTimerCallbackContext and ::forward()
rust: hrtimer: Add forward_now() to HrTimer and HrTimerCallbackContext
rust: time: Add Instant::from_ktime()
rust: hrtimer: Add HrTimer::expires()
rust: time: Implement Add<Delta>/Sub<Delta> for Instant
rust: time: Implement basic arithmetic operations for Delta
Miguel Ojeda (10):
rust: kernel: remove support for unused host `#[test]`s
rust: alloc: remove `allocator_test`
Merge tag 'alloc-next-v6.18-2025-09-04' of https://github.com/Rust-for-Linux/linux into rust-next
rust: block: fix `srctree/` links
rust: drm: fix `srctree/` links
rust: warn if `srctree/` links do not exist
rust: prelude: re-export `core::mem::{align,size}_of{,_val}`
rust: error: improve `Error::from_errno` documentation
rust: error: improve `to_result` documentation
Merge tag 'rust-timekeeping-v6.18' of https://github.com/Rust-for-Linux/linux into rust-next
Onur Özkan (3):
rust: make `ArrayLayout::new_unchecked` a `const fn`
rust: make `kvec::Vec` functions `const fn`
rust: error: add C header links
Ritvik Gupta (1):
rust: kernel: cpu: mark `CpuId::current()` inline
Shankari Anand (3):
rust: dma: Update ARef and AlwaysRefCounted imports from sync::aref
rust: sync: Update ARef and AlwaysRefCounted imports from sync::aref
rust: task: update ARef and AlwaysRefCounted imports from sync::aref
Tamir Duberstein (21):
gpu: nova-core: use `kernel::{fmt,prelude::fmt!}`
rust: alloc: use `kernel::{fmt,prelude::fmt!}`
rust: block: use `kernel::{fmt,prelude::fmt!}`
rust: device: use `kernel::{fmt,prelude::fmt!}`
rust: file: use `kernel::{fmt,prelude::fmt!}`
rust: kunit: use `kernel::{fmt,prelude::fmt!}`
rust: seq_file: use `kernel::{fmt,prelude::fmt!}`
rust: sync: use `kernel::{fmt,prelude::fmt!}`
rust: device: use `kernel::{fmt,prelude::fmt!}`
drm/panic: use `core::ffi::CStr` method names
rust: auxiliary: use `core::ffi::CStr` method names
rust: configfs: use `core::ffi::CStr` method names
rust: cpufreq: use `core::ffi::CStr` method names
rust: drm: use `core::ffi::CStr` method names
rust: firmware: use `core::ffi::CStr` method names
rust: kunit: use `core::ffi::CStr` method names
rust: miscdevice: use `core::ffi::CStr` method names
rust: net: use `core::ffi::CStr` method names
rust: of: use `core::ffi::CStr` method names
rust: acpi: use `core::ffi::CStr` method names
rust: macros: reduce collections in `quote!` macro
Documentation/gpu/nova/core/todo.rst | 1 -
drivers/block/rnull.rs | 2 +-
drivers/gpu/drm/drm_panic_qr.rs | 2 +-
drivers/gpu/nova-core/fb.rs | 6 +-
drivers/gpu/nova-core/gpu.rs | 3 +-
drivers/gpu/nova-core/regs/macros.rs | 6 +-
drivers/gpu/nova-core/vbios.rs | 4 +-
rust/Makefile | 29 ++---
rust/bindgen_parameters | 5 +
rust/bindings/bindings_helper.h | 1 +
rust/bindings/lib.rs | 8 ++
rust/kernel/acpi.rs | 7 +-
rust/kernel/alloc.rs | 15 +--
rust/kernel/alloc/allocator.rs | 8 ++
rust/kernel/alloc/allocator_test.rs | 124 -------------------
rust/kernel/alloc/kbox.rs | 92 +++++++++++++-
rust/kernel/alloc/kvec.rs | 24 ++--
rust/kernel/alloc/kvec/errors.rs | 2 +-
rust/kernel/alloc/layout.rs | 2 +-
rust/kernel/auxiliary.rs | 4 +-
rust/kernel/block/mq.rs | 2 +-
rust/kernel/block/mq/gen_disk.rs | 4 +-
rust/kernel/block/mq/raw_writer.rs | 3 +-
rust/kernel/configfs.rs | 4 +-
rust/kernel/cpu.rs | 1 +
rust/kernel/cpufreq.rs | 6 +-
rust/kernel/device.rs | 6 +-
rust/kernel/device/property.rs | 23 ++--
rust/kernel/dma.rs | 2 +-
rust/kernel/drm/device.rs | 6 +-
rust/kernel/drm/driver.rs | 2 +-
rust/kernel/drm/file.rs | 2 +-
rust/kernel/drm/gem/mod.rs | 2 +-
rust/kernel/drm/ioctl.rs | 2 +-
rust/kernel/error.rs | 66 ++++++++--
rust/kernel/firmware.rs | 2 +-
rust/kernel/fs/file.rs | 5 +-
rust/kernel/kunit.rs | 14 +--
rust/kernel/lib.rs | 5 +-
rust/kernel/list.rs | 120 ++++++++++++++++++
rust/kernel/miscdevice.rs | 2 +-
rust/kernel/net/phy.rs | 2 +-
rust/kernel/of.rs | 2 +-
rust/kernel/prelude.rs | 5 +-
rust/kernel/ptr.rs | 228 +++++++++++++++++++++++++++++++++++
rust/kernel/seq_file.rs | 6 +-
rust/kernel/sync/arc.rs | 8 +-
rust/kernel/sync/aref.rs | 17 ++-
rust/kernel/task.rs | 7 +-
rust/kernel/time.rs | 163 ++++++++++++++++++++++++-
rust/kernel/time/hrtimer.rs | 152 ++++++++++++++++++++++-
rust/kernel/time/hrtimer/arc.rs | 9 +-
rust/kernel/time/hrtimer/pin.rs | 9 +-
rust/kernel/time/hrtimer/pin_mut.rs | 12 +-
rust/kernel/time/hrtimer/tbox.rs | 9 +-
rust/macros/quote.rs | 104 ++++++++--------
rust/uapi/lib.rs | 2 +
samples/rust/rust_configfs.rs | 2 +-
samples/rust/rust_dma.rs | 2 +-
scripts/generate_rust_analyzer.py | 4 +-
scripts/rustdoc_test_gen.rs | 2 +-
61 files changed, 1054 insertions(+), 315 deletions(-)
delete mode 100644 rust/kernel/alloc/allocator_test.rs
create mode 100644 rust/kernel/ptr.rs
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