Changes in pin_data.rs

f4b369c6fe0ceaba2da2daff8c9eb415f85926dd - Merge branch 'next' into for-linus

Mon, 20 Apr 2026 03:28:57 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.1 merge window. List of files: /linux/rust/pin-init/internal/src/pin_data.rs

0421ccdfad0d92713a812a5aeb7d07b0ea7213c8 - Merge tag 'v7.0-rc3' into next

Thu, 12 Mar 2026 18:44:42 +0100

Merge tag 'v7.0-rc3' into nextSync up with the mainline to brig up the latest changes, specificallychanges to ALPS driver. List of files: /linux/rust/pin-init/internal/src/pin_data.rs

42d3b66d4cdbacfc9d120d2301b8de89cc29a914 - Merge drm/drm-next into drm-xe-next

Thu, 12 Mar 2026 15:17:56 +0100

Merge drm/drm-next into drm-xe-nextBackmerging to bring in 7.00-rc3. Important ahead GPU SVM merging THPsupport.Signed-off-by: Matthew Brost List of files: /linux/rust/pin-init/internal/src/pin_data.rs

f09812b85fa6f41058bcc46e70ac406bf9b0493a - Merge drm/drm-next into drm-intel-next

Wed, 25 Feb 2026 12:23:04 +0100

Merge drm/drm-next into drm-intel-nextSync with v7.0-rc1 which contains a few treewide changes affecting i915.Signed-off-by: Jani Nikula List of files: /linux/rust/pin-init/internal/src/pin_data.rs

8b85987d3cf50178f67618122d9f3bb202f62f42 - Merge drm/drm-next into drm-misc-next

Mon, 23 Feb 2026 11:48:20 +0100

Merge drm/drm-next into drm-misc-nextLet's merge 7.0-rc1 to start the new drm-misc-next windowSigned-off-by: Maxime Ripard List of files: /linux/rust/pin-init/internal/src/pin_data.rs

c17ee635fd3a482b2ad2bf5e269755c2eae5f25e - Merge drm/drm-fixes into drm-misc-fixes

Mon, 23 Feb 2026 10:09:45 +0100

Merge drm/drm-fixes into drm-misc-fixes7.0-rc1 was just released, let's merge it to kick the new release cycle.Signed-off-by: Maxime Ripard List of files: /linux/rust/pin-init/internal/src/pin_data.rs

a9aabb3b839aba094ed80861054993785c61462c - Merge tag 'rust-6.20-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

Tue, 10 Feb 2026 20:53:01 +0100

Merge tag 'rust-6.20-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linuxPull rust updates from Miguel Ojeda: "Toolchain and infrastructure: - Add '__rust_helper' annotation to the C helpers This is needed to inline these helpers into Rust code - Remove imports available via the prelude, treewide This was possible thanks to a new lint in Klint that Gary has implemented -- more Klint-related changes, including initial upstream support, are coming - Deduplicate pin-init flags 'kernel' crate: - Add support for calling a function exactly once with the new 'do_once_lite!' macro (and 'OnceLite' type) Based on this, add 'pr_*_once!' macros to print only once - Add 'impl_flags!' macro for defining common bitflags operations: impl_flags!( /// Represents multiple permissions. #[derive(Debug, Clone, Default, Copy, PartialEq, Eq)] pub struct Permissions(u32); /// Represents a single permission. #[derive(Debug, Clone, Copy, PartialEq, Eq)] pub enum Permission { /// Read permission. Read = 1 << 0, /// Write permission. Write = 1 << 1, /// Execute permission. Execute = 1 << 2, } ); let mut f: Permissions = Permission::Read | Permission::Write; assert!(f.contains(Permission::Read)); assert!(!f.contains(Permission::Execute)); f |= Permission::Execute; assert!(f.contains(Permission::Execute)); let f2: Permissions = Permission::Write | Permission::Execute; assert!((f ^ f2).contains(Permission::Read)); assert!(!(f ^ f2).contains(Permission::Write)); - 'bug' module: support 'CONFIG_DEBUG_BUGVERBOSE_DETAILED' in the 'warn_on!' macro in order to show the evaluated condition alongside the file path: ------------[ cut here ]------------ WARNING: [val == 1] linux/samples/rust/rust_minimal.rs:27 at ... Modules linked in: rust_minimal(+) - Add safety module with 'unsafe_precondition_assert!' macro, currently a wrapper for 'debug_assert!', intended to mark the validation of safety preconditions where possible: /// # Safety /// /// The caller must ensure that `index` is less than `N`. unsafe fn set_unchecked(&mut self, index: usize, value: T) { unsafe_precondition_assert!( index < N, "set_unchecked() requires index ({index}) < N ({N})" ); ... } - Add instructions to 'build_assert!' documentation requesting to always inline functions when used with function arguments - 'ptr' module: replace 'build_assert!' with a 'const' one - 'rbtree' module: reduce unsafe blocks on pointer derefs - 'transmute' module: implement 'FromBytes' and 'AsBytes' for inhabited ZSTs, and use it in Nova - More treewide replacements of 'c_str!' with C string literals 'macros' crate: - Rewrite most procedural macros ('module!', 'concat_idents!', '#[export]', '#[vtable]', '#[kunit_tests]') to use the 'syn' parsing library which we introduced last cycle, with better diagnostics This also allows to support '#[cfg]' properly in the '#[vtable]' macro, to support arbitrary types in 'module!' macro (not just an identifier) and to remove several custom parsing helpers we had - Use 'quote!' from the recently vendored 'quote' library and remove our custom one The vendored one also allows us to avoid quoting '"' and '{}' inside the template anymore and editors can now highlight it. In addition, it improves robustness as it eliminates the need for string quoting and escaping - Use 'pin_init::zeroed()' to simplify KUnit code 'pin-init' crate: - Rewrite all procedural macros ('[pin_]init!', '#[pin_data]', '#[pinned_drop]', 'derive([Maybe]Zeroable)') to use the 'syn' parsing library which we introduced last cycle, with better diagnostics - Implement 'InPlaceWrite' for '&'static mut MaybeUninit'. This enables users to use external allocation mechanisms such as 'static_cell' - Support tuple structs in 'derive([Maybe]Zeroable)' - Support attributes on fields in '[pin_]init!' (such as '#[cfg(...)]') - Add a '#[default_error()]' attribute to '[pin_]init!' to override the default error (when no '? Error' is specified) - Support packed structs in '[pin_]init!' with '#[disable_initialized_field_access]' - Remove 'try_[pin_]init!' in favor of merging their feature with '[pin_]init!'. Update the kernel's own 'try_[pin_]init!' macros to use the 'default_error' attribute - Correct 'T: Sized' bounds to 'T: ?Sized' in the generated 'PinnedDrop' check by '#[pin_data]' Documentation: - Conclude the Rust experiment MAINTAINERS: - Add "RUST [RUST-ANALYZER]" entry for the rust-analyzer support. Tamir and Jesung will take care of it. They have both been active around it for a while. The new tree will flow through the Rust one - Add Gary as maintainer for "RUST [PIN-INIT]" - Update Boqun and Tamir emails to their kernel.org accounts And a few other cleanups and improvements"* tag 'rust-6.20-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (59 commits) rust: safety: introduce `unsafe_precondition_assert!` macro rust: add `impl_flags!` macro for defining common bitflag operations rust: print: Add pr_*_once macros rust: bug: Support DEBUG_BUGVERBOSE_DETAILED option rust: print: Add support for calling a function exactly once rust: kbuild: deduplicate pin-init flags gpu: nova-core: remove imports available via prelude rust: clk: replace `kernel::c_str!` with C-Strings MAINTAINERS: Update my email address to @kernel.org rust: macros: support `#[cfg]` properly in `#[vtable]` macro. rust: kunit: use `pin_init::zeroed` instead of custom null value rust: macros: rearrange `#[doc(hidden)]` in `module!` macro rust: macros: allow arbitrary types to be used in `module!` macro rust: macros: convert `#[kunit_tests]` macro to use `syn` rust: macros: convert `concat_idents!` to use `syn` rust: macros: convert `#[export]` to use `syn` rust: macros: use `quote!` for `module!` macro rust: macros: use `syn` to parse `module!` macro rust: macros: convert `#[vtable]` macro to use `syn` rust: macros: use `quote!` from vendored crate ... List of files: /linux/rust/pin-init/internal/src/pin_data.rs

99ba0fa10de0cc0386ea61e6e5068a78a8394060 - Merge tag 'pin-init-v7.0' of https://github.com/Rust-for-Linux/linux into rust-next

Tue, 27 Jan 2026 14:33:55 +0100

Merge tag 'pin-init-v7.0' of https://github.com/Rust-for-Linux/linux into rust-nextPull pin-init updates from Benno Lossin: "Added: - Implement 'InPlaceWrite' for '&'static mut MaybeUninit'. This enables users to use external allocation mechanisms such as 'static_cell'. - Add Gary Guo as a Maintainer. Changed: - Rewrote all proc-macros ('[pin_]init!', '#[pin_data]', '#[pinned_drop]', 'derive([Maybe]Zeroable)'), using 'syn' with better diagnostics. - Support tuple structs in 'derive([Maybe]Zeroable)'. - Support attributes on fields in '[pin_]init!' (such as '#[cfg(...)]'). - Add a '#[default_error()]' attribute to '[pin_]init!' to override the default error (when no '? Error' is specified). - Support packed structs in '[pin_]init!' with '#[disable_initialized_field_access]'. Removed: - Remove 'try_[pin_]init!' in favor of merging their feature with '[pin_]init!'. Update the kernel's own 'try_[pin_]init!' macros to use the 'default_error' attribute. Fixed: - Correct 'T: Sized' bounds to 'T: ?Sized' in the generated 'PinnedDrop' check by '#[pin_data]'."* tag 'pin-init-v7.0' of https://github.com/Rust-for-Linux/linux: rust: pin-init: Implement `InPlaceWrite` for `&'static mut MaybeUninit` MAINTAINERS: add Gary Guo to pin-init rust: pin-init: internal: init: simplify Zeroable safety check rust: pin-init: internal: init: add escape hatch for referencing initialized fields rust: pin-init: internal: init: add support for attributes on initializer fields rust: init: use `#[default_error(err)]` for the initializer macros rust: pin-init: add `#[default_error()]` attribute to initializer macros rust: pin-init: rewrite the initializer macros using `syn` rust: pin-init: add `?Sized` bounds to traits in `#[pin_data]` macro rust: pin-init: rewrite `#[pin_data]` using `syn` rust: pin-init: rewrite the `#[pinned_drop]` attribute macro using `syn` rust: pin-init: rewrite `derive(Zeroable)` and `derive(MaybeZeroable)` using `syn` rust: pin-init: internal: add utility API for syn error handling rust: pin-init: add `syn` dependency and remove `proc-macro[2]` and `quote` workarounds rust: pin-init: allow the crate to refer to itself as `pin-init` in doc tests rust: pin-init: remove `try_` versions of the initializer macros List of files: /linux/rust/pin-init/internal/src/pin_data.rs

dae5466c4aa5b43a6cda4282bf9ff8e6b42ece0e - rust: pin-init: add `?Sized` bounds to traits in `#[pin_data]` macro

Fri, 16 Jan 2026 11:54:23 +0100

rust: pin-init: add `?Sized` bounds to traits in `#[pin_data]` macroThe `#[pin_data]` macro uses some auxiliary traits to ensure that a userdoes not implement `Drop` for the annotated struct, as that is unsoundand can lead to UB. However, if the struct that is annotated is`!Sized`, the current bounds do not work, because `Sized` is an implicitbound for generics.This is *not* a soundness hole of pin-init, as it currently isimpossible to construct an unsized struct using pin-init.Tested-by: Andreas Hindborg Reviewed-by: Gary Guo Signed-off-by: Benno Lossin List of files: /linux/rust/pin-init/internal/src/pin_data.rs

560f6d13c33f9f06ca34c14dc7c0a045d949c4a0 - rust: pin-init: rewrite `#[pin_data]` using `syn`

Fri, 16 Jan 2026 11:54:22 +0100

rust: pin-init: rewrite `#[pin_data]` using `syn`Rewrite the attribute macro `#[pin_data]` using `syn`. No functionalchanges intended aside from improved error messages on syntactic andsemantical errors. For example if one forgets a comma at the end of afield: #[pin_data] struct Foo { a: Box b: Box }The declarative macro reports the following errors: error: expected `,`, or `}`, found `b` --> tests/ui/compile-fail/pin_data/missing_comma.rs:5:16 | 5 | a: Box | ^ help: try adding a comma: `,` error: recursion limit reached while expanding `$crate::__pin_data!` --> tests/ui/compile-fail/pin_data/missing_comma.rs:3:1 | 3 | #[pin_data] | ^^^^^^^^^^^ | = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`$CRATE`) = note: this error originates in the macro `$crate::__pin_data` which comes from the expansion of the attribute macro `pin_data` (in Nightly builds, run with -Z macro-backtrace for more info)The new `syn` version reports: error: expected `,`, or `}`, found `b` --> tests/ui/compile-fail/pin_data/missing_comma.rs:5:16 | 5 | a: Box | ^ help: try adding a comma: `,` error: expected `,` --> tests/ui/compile-fail/pin_data/missing_comma.rs:6:5 | 6 | b: Box | ^Tested-by: Andreas Hindborg Reviewed-by: Gary Guo Signed-off-by: Benno Lossin List of files: /linux/rust/pin-init/internal/src/pin_data.rs

514e4ed2c9da9112fcd378b1bd9b9d120edf7ca9 - rust: pin-init: add `syn` dependency and remove `proc-macro[2]` and `quote` workarounds

Fri, 16 Jan 2026 11:54:18 +0100

rust: pin-init: add `syn` dependency and remove `proc-macro[2]` and `quote` workarounds`syn` makes parsing Rust from proc-macros a lot simpler. `pin-init` hasnot used `syn` up until now, because the we did not support it. Thatchanged in commit 54e3eae85562 ("Merge patch series "`syn` support""),so we can finally utilize the added ergonomics of parsing proc-macroinput with `syn`.Previously we only had the `proc-macro` library available, whereas theuser-space version also used `proc-macro2` and `quote`. Now both areavailable, so remove the workarounds.Due to these changes, clippy emits warnings about unnecessary`.to_string()` as `proc-macro2` provides an additional `PartialEq` implon `Ident`, so the warnings are fixed.[ Adjusted wording from upstream version and added build system changes for the kernel - Benno ]Co-developed-by: Gary Guo Signed-off-by: Gary Guo Reviewed-by: Tamir Duberstein Tested-by: Andreas Hindborg Signed-off-by: Benno Lossin List of files: /linux/rust/pin-init/internal/src/pin_data.rs

bbfd5594756011167b8f8de9a00e0c946afda1e6 - Merge drm/drm-next into drm-intel-gt-next

Wed, 28 May 2025 09:20:17 +0200

Merge drm/drm-next into drm-intel-gt-nextNeed to pull in a67221b5eb8d ("drm/i915/dp: Return min bpc supported by source instead of 0")in order to fix build breakage on GCC 9.4.0 (from Ubuntu 20.04).Signed-off-by: Joonas Lahtinen List of files: /linux/rust/pin-init/internal/src/pin_data.rs

db5302ae571beec635c1a96e7f72926a4e65195e - Merge drm/drm-next into drm-intel-next

Fri, 16 May 2025 09:22:36 +0200

Merge drm/drm-next into drm-intel-nextBackmerge to sync with v6.15-rc, xe, and specifically async flip changesin drm-misc.Signed-off-by: Jani Nikula List of files: /linux/rust/pin-init/internal/src/pin_data.rs

4f9786035f9e519db41375818e1d0b5f20da2f10 - Merge branch 'next' into for-linus

Mon, 02 Jun 2025 06:41:07 +0200

Merge branch 'next' into for-linusPrepare input updates for 6.16 merge window. List of files: /linux/rust/pin-init/internal/src/pin_data.rs

d51b9d81f7883f526b26e3ab903e646274aebeb1 - Merge tag 'v6.15-rc6' into next

Fri, 16 May 2025 01:20:39 +0200

Merge tag 'v6.15-rc6' into nextSync up with mainline to bring in xpad controller changes. List of files: /linux/rust/pin-init/internal/src/pin_data.rs

844e31bbaef7c8a6ff2c0fbac45c0c85b5484482 - Merge remote-tracking branch 'drm-misc/drm-misc-next' into msm-next

Tue, 29 Apr 2025 22:42:29 +0200

Merge remote-tracking branch 'drm-misc/drm-misc-next' into msm-nextMerge drm-misc-next to get commit Fixes: fec450ca15af ("drm/display:hdmi: provide central data authority for ACR params").Signed-off-by: Rob Clark List of files: /linux/rust/pin-init/internal/src/pin_data.rs

3ab7ae8e07f888f223027f0ef84d33e43919ad55 - Merge drm/drm-next into drm-xe-next

Thu, 24 Apr 2025 13:34:55 +0200

Merge drm/drm-next into drm-xe-nextBackmerge to bring in linux 6.15-rc.Signed-off-by: Thomas Hellström List of files: /linux/rust/pin-init/internal/src/pin_data.rs

1afba39f9305fe4061a4e70baa6ebab9d41459da - Merge drm/drm-next into drm-misc-next

Mon, 07 Apr 2025 13:47:40 +0200

Merge drm/drm-next into drm-misc-nextBackmerging to get v6.15-rc1 into drm-misc-next. Also fixes abuild issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.Signed-off-by: Thomas Zimmermann List of files: /linux/rust/pin-init/internal/src/pin_data.rs

9f13acb2406a3aed90c6738b3a2f1c0e43118cbd - Merge tag 'v6.15-rc1' into x86/cpu, to refresh the branch with upstream changes

Fri, 11 Apr 2025 11:13:27 +0200

Merge tag 'v6.15-rc1' into x86/cpu, to refresh the branch with upstream changesSigned-off-by: Ingo Molnar List of files: /linux/rust/pin-init/internal/src/pin_data.rs

6ce0fdaae043803bb324d915ce0fe43316bf1e81 - Merge tag 'v6.15-rc1' into x86/asm, to refresh the branch

Wed, 09 Apr 2025 21:39:43 +0200

Merge tag 'v6.15-rc1' into x86/asm, to refresh the branchSigned-off-by: Ingo Molnar List of files: /linux/rust/pin-init/internal/src/pin_data.rs