[PATCH v5 0/2] rust: alloc: kvec doc example and allocator unit tests

[Hui Zhu <hui.zhu@linux.dev>]

From: Hui Zhu <zhuhui@kylinos.cn>

This series includes two Rust patches:

Patch 1 adds KUnit tests for alignment guarantees in Rust allocators.
Validates kmalloc handling of standard (128B) and page-size (8KB)
alignments.
Confirms vmalloc/kvmalloc reject oversized alignment requests.
Ensures Rust allocators respect kernel allocation constraints.

Patch 2 improves the documentation for KVec::as_slice() by adding a
code example. This shows how to use the method with push operations and
assertions.

Both patches are co-developed with Geliang Tang. Tested on x86_64 using
KUnit.

Changelog:
v5:
According to the comments of Danilo, change to use generic struct and
allocator Generics in allocator.rs.
v4:
According to the comments of, add the error check for push.
v3:
According to the comments of Danilo and Boqun, move KVec test to doc
example and move VBox to allocator unit tests.
v2:
According to the comments of Danilo, updated the commit to samples the
usage of VBox and KVec.

Hui Zhu (2):
  rust: allocator: add KUnit tests for alignment guarantees
  rust: alloc: kvec: add doc example for as_slice method

 rust/kernel/alloc/allocator.rs | 58 ++++++++++++++++++++++++++++++++++
 rust/kernel/alloc/kvec.rs      | 10 ++++++
 2 files changed, 68 insertions(+)

-- 
2.43.0