|SUCCESS| stack: fix pile GCC memcpy warnings

[dpdklab at iol.unh.edu]

Test-Label: ai-code-review
Test-Status: SUCCESS
https://dpdk.org/patch/171733

_AI Code Review_

=== Patch Review: series.patch (via Claude) ===
Review date: 2026-10-20

# DPDK Patch Review

## Errors

None identified.

## Warnings

None identified.

## Info

### 1. Comment style - split long line

The comments explaining the GCC diagnostic pragmas exceed 100 characters and do not follow the multi-line comment format preferred in DPDK:

**Location:** lib/stack/rte_stack_pile.h:160-162, 289-291

**Current:**
```c
/*
 * On architectures where rte_memcpy() is defined as memcpy(),
 * although GCC knows that this code path is not taken when the source's size is smaller than
 * RTE_STACK_PILE_BULK_SIZE, it still warns about memcpy() source overread.
 * So we disable the compiler warning for this memcpy() instance.
 */
```

**Suggested:**
```c
/*
 * On architectures where rte_memcpy() is defined as memcpy(),
 * although GCC knows that this code path is not taken when the
 * source's size is smaller than RTE_STACK_PILE_BULK_SIZE, it still
 * warns about memcpy() source overread.
 * So we disable the compiler warning for this memcpy() instance.
 */
```

The same applies to lines 289-291 for the destination overflow comment.

### 2. Commit message note format

The "NB:" and "PS:" sections in the commit message are informal. While not incorrect, DPDK commit messages typically use standard paragraphs or bullet points for additional context.

**Current:**
```
NB:
It has not been investigated which GCC versions are affected.
...

PS:
The alternative was to obfuscate the code...
```

**Suggested:** Integrate these as standard paragraphs without the "NB:" and "PS:" labels.

### 3. Commit message line about backporting

The line "The pile was introduce with this DPDK release, so no need to backport." should be removed or placed after the "---" separator (after Signed-off-by) as it's procedural information not part of the permanent commit message.

Review-Result: CLEAN