[PATCH v6 00/18] refactor to utilize `&raw [const|mut]`

[Antonio Hickey <contact@antoniohickey.com>]

This patch set enables the `raw_ref_op` feature, which became stable 
in Rust 1.82.

It then replaces all occurences of `addr_of!(place)` and
`addr_of_mut!(place)` with `&raw const place` and `&raw mut place`.

Finally it adds the previous macros `addr_of!` and `addr_of_mut!` to
the disallowed macros in `.clippy.toml`.

Changes in v6:
- Rebased onto rust-next to refactor new occurences of `addr_of[_mut]!`
  and handle the 2 patches from the v5 patchset that were merged.
- Link to v5: https://lore.kernel.org/all/20250320020740.1631171-1-contact@antoniohickey.com/

Changes in v5:
- Fix doctest errors when compiling on the minimum Rust version (1.78)
  due to not having the `raw_ref_op` feature enabled for doctests.
- Reword commit messages to more accurately describe the changes.
- Replace unsafe call to `Opaque::raw_get` with pointer casting
  in workqueue.
- Fix clippy disallowed macros message for `core::ptr::addr_of`
- Link to v4: https://lore.kernel.org/all/20250316061429.817126-1-contact@antoniohickey.com/

Changes in v4:
- Fix comment typo.
- Fix clippy issues.
- Add more context and link for disallowed macros with clippy.
- Separate the patch replacing of `addr_of[_mut]!` macros with
  `&raw [const|mut]` into smaller patches for each section.
  (PATCH v3 2/3 -> PATCH v4 2/16 through 15/16)
- Fix email typo.
- Link to v3: https://lore.kernel.org/all/0100019597091f92-cb55b6cd-4d06-4d14-8d9c-1a1314949a00-000000@email.amazonses.com/

Changes in v3:
- Re ordered the patches, so that the patch adding the `addr_of[_mut]!`
  macros to the disallowed macros in clippy is applied after replacing
  all the instances of `addr_of_[_mut]` with `&raw [const|mut]`.
  (moved PATCH v2 2/3 -> PATCH v3 3/3 and PATCH v2 3/3 -> PATCH v3 2/3)
- Link to v2: https://lore.kernel.org/all/0100019592c224ba-0cf38e16-2aa2-459d-99cd-09a463d616d4-000000@email.amazonses.com/

Changes in v2:   
- Fix `&raw place` should be `&raw const place`
- Fix email typo
- Link to v1: https://lore.kernel.org/all/010001958dfeacb5-9039aaab-6114-494a-9f1d-f13982091169-000000@email.amazonses.com/

Suggested-by: Benno Lossin <benno.lossin@proton.me>
Link: https://github.com/Rust-for-Linux/linux/issues/1148
Signed-off-by: Antonio Hickey <contact@antoniohickey.com>



Antonio Hickey (18):
  rust: init: refactor to use `&raw mut`
  rust: list: refactor to use `&raw [const|mut]`
  rust: task: remove use of `addr_of!` macro
  rust: faux: refactor to use `&raw mut`
  rust: kunit: refactor to use `&raw [const|mut]`
  rust: workqueue: refactor to use `&raw [const|mut]`
  rust: workqueue: replace `raw_get` with pointer cast
  rust: rbtree: refactor to use `&raw mut`
  rust: net: phy: refactor to use `&raw mut`
  rust: sync: arc: refactor to use `&raw const`
  rust: jump_label: refactor to use `&raw const`
  rust: fs: file: refactor to use `&raw const`
  rust: time: hrtimer: refactor to use `&raw const`
  rust: pci: refactor to use `&raw mut`
  rust: platform: refactor to use `&raw mut`
  rust: dma: refactor to use `&raw [const|mut]`
  rust: pin-init: refactor to use `&raw mut`
  rust: clippy: disallow `addr_of[_mut]!` macros

 .clippy.toml                           |  4 ++++
 rust/kernel/dma.rs                     |  4 ++--
 rust/kernel/faux.rs                    |  4 ++--
 rust/kernel/fs/file.rs                 |  2 +-
 rust/kernel/init.rs                    |  4 ++--
 rust/kernel/jump_label.rs              |  4 ++--
 rust/kernel/kunit.rs                   |  8 ++++----
 rust/kernel/list.rs                    |  2 +-
 rust/kernel/list/impl_list_item_mod.rs |  6 +++---
 rust/kernel/net/phy.rs                 |  4 ++--
 rust/kernel/pci.rs                     |  8 ++------
 rust/kernel/platform.rs                |  8 ++------
 rust/kernel/rbtree.rs                  | 22 ++++++++++----------
 rust/kernel/sync/arc.rs                |  4 ++--
 rust/kernel/task.rs                    |  4 ++--
 rust/kernel/time/hrtimer.rs            |  4 ++--
 rust/kernel/workqueue.rs               |  9 +++------
 rust/pin-init/README.md                |  3 +--
 rust/pin-init/src/lib.rs               |  7 +++----
 rust/pin-init/src/macros.rs            | 28 +++++++++++++-------------
 20 files changed, 65 insertions(+), 74 deletions(-)