[yoshuawuyts]

This migrates all label-related automation to the new labeling scheme. Thanks!

[yoshuawuyts]

CI is failing because we haven't yet migrated to the new C--based labels, which this PR now expects. That means we need to apply the migration before we can merge this.

[Copilot]

🟡 Changes recommended

The label check accepts C-question via ^C-, allowing PRs to pass without one of the four change-category labels required for merging.

1 open issue

• Restrict required change labels to approved categories · New

What changed in this PR

This PR aligns Hyperlight’s label automation and contributor documentation with the structured labeling scheme.

Changes:

• Uses structured labels for CI failure reports, release blockers, snapshot goldens, and dependency updates.
• Updates PR category checks and review-status handling. Issues receive S-needs-triage only when no status label exists.
• Aligns release and snapshot documentation with the label names.

File	Description
Justfile	Updates goldens label comments and diagnostics.
docs/​snapshot-versioning.md	Documents S-needs-goldens usage.
docs/​how-to-make-releases.md	Updates release-blocker guidance and search link.
dev/​notify-ci-failure.sh	Updates default labels and examples.
dev/​check-release-blockers.sh	Queries P-release-blocker issues.
.github/​workflows/​WeeklyMshv618.yml	Updates weekly MSHV failure labels.
.github/​workflows/​ValidatePullRequest.yml	Detects and validates S-needs-goldens.
.github/​workflows/​RustNightly.yml	Updates nightly failure labels.
.github/​workflows/​ReleaseBlockerLabelCleanUp.yml	Removes P-release-blocker from closed issues.
.github/​workflows/​ReleaseBlockerCheck.yml	Updates the release-blocker error message.
.github/​workflows/​ready-for-review-manage.yml	Passes S-needs-review to the shared workflow.
.github/​workflows/​ready-for-review-label.yml	Updates the pipeline’s label comment.
.github/​workflows/​PRLabelChecker.yml	Checks for one C- category label.
.github/​workflows/​IssueLabelChecker.yml	Preserves statuses and labels untriaged issues.
.github/​workflows/​Fuzzing.yml	Updates fuzzing failure labels.
.github/​workflows/​DailyBenchmarks.yml	Uses A-perf and structured failure labels.
.github/​workflows/​DailyArm64.yml	Updates ARM64 failure labels and grouping comments.
.github/​workflows/​Coverage.yml	Updates coverage failure labels.
.github/​release.yml	Groups dependency changes under C-deps.
.github/​ISSUE_TEMPLATE/​bug.md	Applies C-bug to bug reports.
.github/​dependabot.yml	Uses C-deps and removes the guest-area label.

_{Review effort: Balanced}

[hyperlight-gh-bot]

Benchmark Results

Measured commit: a96eac1c6fcc
Baseline commit: d8bb96fe7a9d

kvm / amd (Linux) (➖ stable)

No benchmark improved or regressed.

Benchmark Results

function_call_codec

	encode_control	decode_vec_bytes_copy
byte_chunks	768.96 ns (➖ 1.01x slower)
vec_bytes	583.25 ns (➖ 1.01x faster)
		373.46 µs (➖ 1.00x faster)

payload_allocation

	slot_pool_segmented
262144	521.52 ns (➖ 1.01x faster)
65536	143.27 ns (➖ 1.01x slower)

sandboxes

	create_initialized_and_drop
medium	12.96 ms (➖ 1.04x faster)

slot_pool

	alloc_dealloc_128	alloc_dealloc_4096	alloc_dealloc_1500
	7.68 ns (➖ 1.42x faster)	7.68 ns (➖ 1.00x faster)	7.68 ns (➖ 1.00x faster)

snapshot_files

	load_snapshot_unverified
small	99.69 µs (➖ 1.02x slower)

virtq_readonly

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	9.24 µs (➖ 1.25x slower)	7.24 µs (➖ 1.02x slower)
65536	1.92 µs (➖ 1.08x faster)	2.05 µs (➖ 1.07x slower)

virtq_readwrite

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	26.75 µs (➖ 1.01x faster)
65536	6.19 µs (➖ 1.01x faster)	6.18 µs (➖ 1.05x faster)
8192	1.02 µs (➖ 1.02x slower)	1.11 µs (➖ 1.11x slower)

kvm / intel (Linux) (➖ stable)

No benchmark improved or regressed.

Benchmark Results

function_call_codec

	encode_control	decode_vec_bytes_copy
byte_chunks	816.62 ns (➖ 1.00x slower)
vec_bytes	611.60 ns (➖ 1.02x faster)
		744.43 µs (➖ 1.02x faster)

payload_allocation

	slot_pool_segmented
262144	595.06 ns (➖ 1.00x faster)
65536	205.47 ns (➖ 1.02x slower)

sandboxes

	create_initialized_and_drop
medium	15.12 ms (➖ 1.03x slower)

slot_pool

	alloc_dealloc_128	alloc_dealloc_4096	alloc_dealloc_1500
	8.18 ns (➖ 1.01x slower)	8.21 ns (➖ 1.01x slower)	8.15 ns (➖ 1.00x faster)

snapshot_files

	load_snapshot_unverified
small	57.43 µs (➖ 1.00x slower)

virtq_readonly

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	9.08 µs (➖ 1.01x slower)	9.03 µs (➖ 1.00x faster)
65536	2.56 µs (➖ 1.01x slower)	2.54 µs (➖ 1.01x faster)

virtq_readwrite

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	36.08 µs (➖ 1.01x slower)
65536	8.43 µs (➖ 1.02x faster)	8.54 µs (➖ 1.00x faster)
8192	848.32 ns (➖ 1.01x faster)	880.39 ns (➖ 1.00x slower)

mshv3 / amd (Linux) (➖ stable)

No benchmark improved or regressed.

Benchmark Results

function_call_codec

	encode_control	decode_vec_bytes_copy
byte_chunks	1.01 µs (➖ 1.05x slower)
vec_bytes	723.09 ns (➖ 1.00x slower)
		271.12 µs (➖ 1.30x faster)

payload_allocation

	slot_pool_segmented
262144	728.70 ns (➖ 1.00x faster)
65536	192.76 ns (➖ 1.00x faster)

sandboxes

	create_initialized_and_drop
medium	67.08 ms (➖ 1.21x slower)

slot_pool

	alloc_dealloc_128	alloc_dealloc_4096	alloc_dealloc_1500
	9.52 ns (➖ 1.02x faster)	9.52 ns (➖ 1.01x faster)	9.64 ns (➖ 1.00x slower)

snapshot_files

	load_snapshot_unverified
small	104.96 µs (➖ 1.01x faster)

virtq_readonly

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	10.06 µs (➖ 1.06x slower)	9.98 µs (➖ 1.06x faster)
65536	2.24 µs (➖ 1.01x slower)	2.36 µs (➖ 1.04x faster)

virtq_readwrite

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	35.36 µs (➖ 1.08x faster)
65536	8.25 µs (➖ 1.19x faster)	8.46 µs (➖ 1.13x faster)
8192	1.29 µs (➖ 1.05x slower)	1.22 µs (➖ 1.07x faster)

mshv3 / intel (Linux) (➖ stable)

No benchmark improved or regressed.

Benchmark Results

function_call_codec

	encode_control	decode_vec_bytes_copy
byte_chunks	924.15 ns (➖ 1.04x faster)
vec_bytes	670.28 ns (➖ 1.03x slower)
		817.06 µs (➖ 1.12x slower)

payload_allocation

	slot_pool_segmented
262144	1.11 µs (➖ 1.49x slower)
65536	216.53 ns (➖ 1.23x faster)

sandboxes

	create_initialized_and_drop
medium	82.04 ms (➖ 1.00x faster)

slot_pool

	alloc_dealloc_128	alloc_dealloc_4096	alloc_dealloc_1500
	8.73 ns (➖ 1.02x faster)	8.70 ns (➖ 1.01x faster)	8.72 ns (➖ 1.01x faster)

snapshot_files

	load_snapshot_unverified
small	59.01 µs (➖ 1.02x slower)

virtq_readonly

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	7.97 µs (➖ 1.01x slower)	8.04 µs (➖ 1.00x slower)
65536	2.29 µs (➖ 1.01x slower)	2.27 µs (➖ 1.00x faster)

virtq_readwrite

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	39.59 µs (➖ 1.01x faster)
65536	7.57 µs (➖ 1.01x faster)	7.71 µs (➖ 1.01x slower)
8192	921.12 ns (➖ 1.01x faster)	901.16 ns (➖ 1.01x faster)

hyperv-ws2025 / amd (Windows) (➖ stable)

No benchmark improved or regressed.

Benchmark Results

function_call_codec

	encode_control	decode_vec_bytes_copy
byte_chunks	1.13 µs (➖ 1.03x faster)
vec_bytes	765.31 ns (➖ 1.01x slower)
		1.91 ms (➖ 1.00x faster)

payload_allocation

	slot_pool_segmented
262144	817.36 ns (➖ 1.03x slower)
65536	235.11 ns (➖ 1.02x slower)

sandboxes

	create_initialized_and_drop
medium	13.86 ms (➖ 1.02x slower)

slot_pool

	alloc_dealloc_128	alloc_dealloc_4096	alloc_dealloc_1500
	10.97 ns (➖ 1.04x slower)	10.60 ns (➖ 1.00x slower)	10.63 ns (➖ 1.00x slower)

snapshot_files

	load_snapshot_unverified
small	730.32 µs (➖ 1.12x slower)

virtq_readonly

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	8.88 µs (➖ 1.02x slower)	8.99 µs (➖ 1.04x slower)
65536	2.56 µs (➖ 1.02x slower)	2.57 µs (➖ 1.01x slower)

virtq_readwrite

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	39.54 µs (➖ 1.03x slower)
65536	8.54 µs (➖ 1.11x faster)	8.68 µs (➖ 1.00x slower)
8192	1.33 µs (➖ 1.06x faster)	1.34 µs (➖ 1.02x faster)

hyperv-ws2025 / intel (Windows) (➖ stable)

No benchmark improved or regressed.

Benchmark Results

function_call_codec

	encode_control	decode_vec_bytes_copy
byte_chunks	1.29 µs (➖ 1.04x slower)
vec_bytes	791.38 ns (➖ 1.00x faster)
		3.01 ms (➖ 1.01x slower)

payload_allocation

	slot_pool_segmented
262144	754.81 ns (➖ 1.02x slower)
65536	210.79 ns (➖ 1.01x slower)

sandboxes

	create_initialized_and_drop
medium	14.33 ms (➖ 1.01x faster)

slot_pool

	alloc_dealloc_128	alloc_dealloc_4096	alloc_dealloc_1500
	9.74 ns (➖ 1.00x slower)	9.89 ns (➖ 1.02x faster)	9.71 ns (➖ 1.01x slower)

snapshot_files

	load_snapshot_unverified
small	673.58 µs (➖ 1.00x slower)

virtq_readonly

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	7.50 µs (➖ 1.03x faster)	7.47 µs (➖ 1.00x faster)
65536	2.42 µs (➖ 1.04x slower)	2.27 µs (➖ 1.01x slower)

virtq_readwrite

	slot_pool_segmented	slot_pool_segmented_fragmented
262144	42.47 µs (➖ 1.02x slower)
65536	8.92 µs (➖ 1.04x slower)	8.32 µs (➖ 1.01x faster)
8192	1.06 µs (➖ 1.11x faster)	1.10 µs (➖ 1.01x faster)

_{Reported by cargo ci bench-report --candidate run:43233287715 --config-file bench_report.toml.}