|SUCCESS| config/arm: add Marvell CN20k

[dpdklab at iol.unh.edu]

Test-Label: ai-code-review
Test-Status: SUCCESS
https://dpdk.org/patch/172352

_AI Code Review_

=== Patch Review: series.patch (via Claude) ===
Review date: 2026-11-02

# DPDK Patch Review

## Errors

None identified.

## Warnings

None identified.

## Info

### Cross-compilation file naming consistency

The new file `arm64_cn20k_linux_gcc` follows the naming pattern used by other Marvell SoC cross-compilation files in the same directory (e.g., `arm64_cn9k_linux_gcc`, `arm64_cn10k_linux_gcc`). The naming is consistent with the existing codebase.

### SoC configuration structure

The `soc_cn20k` dictionary follows the established pattern for ARM SoC definitions in `meson.build`. The configuration includes:
- Description field identifying the platform
- ARM implementer ID (0x41 = ARM Ltd, standard for Neoverse cores)
- Part number 0xd8e (ARM Neoverse N3)
- Appropriate flags for max lcores and NUMA nodes
- NUMA disabled, consistent with single-node configuration

The configuration appears reasonable for an ARM Neoverse N3-based platform.

### Documentation update

The patch correctly updates the SoC list in the meson.build comment block, adding `cn20k: Marvell OCTEON 20` in alphabetical order within the list.

### Missing release notes

This patch adds support for a new platform (Marvell CN20k SoC). According to the guidelines, new drivers or subsystems should have release notes. While this is a configuration/platform addition rather than a new driver, it would be appropriate to document this new platform support in the release notes to inform users of the expanded platform compatibility.

Consider adding an entry to `doc/guides/rel_notes/release_XX_YY.rst` (current release) under a "New Platforms" or similar section.

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Review-Result: CLEAN