Retain 6.6 kernel config options in 6.12 for Aquantia AQtion DMA P2P DM cache

[chalamalasetty]

Merge Checklist

All boxes should be checked before merging the PR (just tick any boxes which don't apply to this PR)

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json, .github/workflows/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./LICENSES-AND-NOTICES/SPECS/data/licenses.json, ./LICENSES-AND-NOTICES/SPECS/LICENSES-MAP.md, ./LICENSES-AND-NOTICES/SPECS/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

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Summary

Retain 6.6 kernel config options in 6.12 for CONFIG_NET_VENDOR_AQUANTIA, CONFIG_AQTION, CONFIG_BLK_WBT, CONFIG_BLK_WBT_MQ, CONFIG_DM_CACHE,CONFIG_INET_DIAG_DESTROY, CONFIG_ XFRM_INTERFACE CONFIG_HSA_AMD_P2P and CONFIG_DMABUF_MOVE_NOTIFY, CONFIG_SQUASHFS_ZSTD and CONFIG_FW_CFG_SYSFS
Disable CONFIG_ZONE_DMA.
These configs were enabled in the default 6.6 kernel via the following PRs:
#14638
#14797
#14661
#15465
#15463
#14660
#15612
#12221

Users may see regressions when migrating from kernel 6.6 to 6.12.

Change Log

• Change
  Retain 6.6 kernel config options in 6.12 for Aquantia AQtion DMA P2P DM cache

Does this affect the toolchain?

NO

Associated issues

• #xxxx

Links to CVEs

• https://nvd.nist.gov/vuln/detail/CVE-YYYY-XXXX

Test Methodology

• Pipeline build id: Local build.

[sidchintamaneni]

One reason I disabled it might be that DMABUF_MOVE_NOTIFY is an experimental feature in the kernel.
Let me know if this PR goes in, I’ll enable it on the 6.18 kernel as well.

is there a requirement for AQtion(tm) Ethernet card? doesn't hurt to add it as a module but just checking

I think you missed bumping SPEC-SIGNED/kernel-hwe.

[SeanDougherty]

LGTM, Lets add PR #15612 to the description's listed PRs

[christopherco]

CONFIG_ZONE_DMA=y

question (non-blocking): Should we disable ZONE_DMA in the aarch64 as well?

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Refers to: SPECS/kernel-hwe/config_aarch64:1181 in ad3c2a9. [](commit_id = ad3c2a9, deletion_comment = False)

[christopherco]

[chalamalasetty]

CONFIG_ZONE_DMA=y

question (non-blocking): Should we disable ZONE_DMA in the aarch64 as well?

Refers to: SPECS/kernel-hwe/config_aarch64:1181 in ad3c2a9. [](commit_id = ad3c2a9, deletion_comment = False)

Keeping it enabled for now to maintain performance on Arm64 GB200. We’ll run memory‑benchmark tests and consider disabling it if we confirm that ZONE_DMA contributes to substantial memory usage.