Files
xenia-rs/audit-runs/phase-c13-game-dat-files-tbl/diff-cold-vs-cold.md
MechaCat02 ef93a4fa14 handoff: VSync/event-wedge fixes + iterate 2.A–2.BC research notes
Source changes (dormant parity infra, retained from iterate 2.AI/2.AO):
- xenia-kernel/exports.rs: nt_create_event manual_reset polarity +
  related event wiring
- xenia-gpu/mmio_region.rs: D1MODE_VBLANK_VLINE_STATUS hardcode parity

Also lands the audit-runs/ analysis notes (.md/.txt/.json digests) for the
iterate 2.x VSync/0x10e8/0x1004 wedge investigation. Raw trace dumps
(.jsonl/.gz/.csv/.stdout) and agent worktrees (.claude/) are gitignored as
regenerable local artifacts — see memory + HANDOFF for the running findings.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-05 07:19:08 +02:00

132 lines
5.1 KiB
Markdown

# Phase A diff report
**This report is the output of Phase A's diff harness. Divergences
shown here are INPUT for Phase B (first-divergence localization),
not findings of Phase A.** Phase A's job is to make the harness
itself correct, not to analyze what it surfaces.
## Summary
| canary_tid | ours_tid | matched | canary_total | ours_total | first_divergence_at |
|---|---|---|---|---|---|
| 4 | 11 | 9 | 20000 | 9 | — |
| 6 | 1 | 104574 | 250000 | 108408 | 104574 |
| 7 | 2 | 29 | 29 | 30 | — |
| 12 | 7 | 2 | 11783 | 3 | 2 |
| 14 | 9 | 39 | 20000 | 75 | 39 |
| 15 | 10 | 15 | 20000 | 15 | — |
## canary_tid=4 → ours_tid=11
No divergence within the 9 compared events (canary has 20000, ours has 9).
## canary_tid=6 → ours_tid=1
First divergence at `tid_event_idx=104574`: payload.ord: canary=293 ours=304
**Pre-context (last 5 matching events):**
```
canary: [104569] kernel.call RtlLeaveCriticalSection
ours: [104569] kernel.call RtlLeaveCriticalSection
canary: [104570] kernel.return RtlLeaveCriticalSection
ours: [104570] kernel.return RtlLeaveCriticalSection
canary: [104571] import.call RtlEnterCriticalSection
ours: [104571] import.call RtlEnterCriticalSection
canary: [104572] kernel.call RtlEnterCriticalSection
ours: [104572] kernel.call RtlEnterCriticalSection
canary: [104573] kernel.return RtlEnterCriticalSection
ours: [104573] kernel.return RtlEnterCriticalSection
```
**Divergent event:**
```
canary: [104574] import.call RtlEnterCriticalSection
ours: [104574] import.call RtlLeaveCriticalSection
```
**Next event after the divergence (if any):**
```
canary: [104575] kernel.call RtlEnterCriticalSection
ours: [104575] kernel.call RtlLeaveCriticalSection
```
**Raw events (JSON):**
```json
{"deterministic": true, "engine": "canary", "guest_cycle": 0, "host_ns": 846769100, "kind": "import.call", "payload": {"module": "xboxkrnl.exe", "name": "RtlEnterCriticalSection", "ord": 293}, "schema_version": 1, "tid": 6, "tid_event_idx": 104574}
{"deterministic": true, "engine": "ours", "guest_cycle": 5517276, "host_ns": 483675408, "kind": "import.call", "payload": {"module": "xboxkrnl.exe", "name": "RtlLeaveCriticalSection", "ord": 304}, "schema_version": 1, "tid": 1, "tid_event_idx": 104574}
```
## canary_tid=7 → ours_tid=2
No divergence within the 29 compared events (canary has 29, ours has 30).
## canary_tid=12 → ours_tid=7
First divergence at `tid_event_idx=2`: payload.return_value: canary=258 ours=0
**Pre-context (last 5 matching events):**
```
canary: [0] import.call KeWaitForSingleObject
ours: [0] import.call KeWaitForSingleObject
canary: [1] kernel.call KeWaitForSingleObject
ours: [1] kernel.call KeWaitForSingleObject
```
**Divergent event:**
```
canary: [2] kernel.return KeWaitForSingleObject
ours: [2] kernel.return KeWaitForSingleObject
```
**Next event after the divergence (if any):**
```
canary: [3] import.call RtlEnterCriticalSection
ours: <end of stream>
```
**Raw events (JSON):**
```json
{"deterministic": true, "engine": "canary", "guest_cycle": 0, "host_ns": 957667200, "kind": "kernel.return", "payload": {"name": "KeWaitForSingleObject", "return_value": 258, "side_effects": [], "status": "0x00000102"}, "schema_version": 1, "tid": 12, "tid_event_idx": 2}
{"deterministic": true, "engine": "ours", "guest_cycle": 30, "host_ns": 493063903, "kind": "kernel.return", "payload": {"name": "KeWaitForSingleObject", "return_value": 0, "side_effects": [], "status": "0x00000000"}, "schema_version": 1, "tid": 7, "tid_event_idx": 2}
```
## canary_tid=14 → ours_tid=9
First divergence at `tid_event_idx=39`: payload.ord: canary=503 ours=293
**Pre-context (last 5 matching events):**
```
canary: [34] kernel.call KeReleaseSpinLockFromRaisedIrql
ours: [34] kernel.call KeReleaseSpinLockFromRaisedIrql
canary: [35] kernel.return KeReleaseSpinLockFromRaisedIrql
ours: [35] kernel.return KeReleaseSpinLockFromRaisedIrql
canary: [36] import.call KfLowerIrql
ours: [36] import.call KfLowerIrql
canary: [37] kernel.call KfLowerIrql
ours: [37] kernel.call KfLowerIrql
canary: [38] kernel.return KfLowerIrql
ours: [38] kernel.return KfLowerIrql
```
**Divergent event:**
```
canary: [39] import.call XAudioGetVoiceCategoryVolumeChangeMask
ours: [39] import.call RtlEnterCriticalSection
```
**Next event after the divergence (if any):**
```
canary: [40] kernel.call XAudioGetVoiceCategoryVolumeChangeMask
ours: [40] kernel.call RtlEnterCriticalSection
```
**Raw events (JSON):**
```json
{"deterministic": true, "engine": "canary", "guest_cycle": 0, "host_ns": 1156650800, "kind": "import.call", "payload": {"module": "xboxkrnl.exe", "name": "XAudioGetVoiceCategoryVolumeChangeMask", "ord": 503}, "schema_version": 1, "tid": 14, "tid_event_idx": 39}
{"deterministic": true, "engine": "ours", "guest_cycle": 417, "host_ns": 1707576528, "kind": "import.call", "payload": {"module": "xboxkrnl.exe", "name": "RtlEnterCriticalSection", "ord": 293}, "schema_version": 1, "tid": 9, "tid_event_idx": 39}
```
## canary_tid=15 → ours_tid=10
No divergence within the 15 compared events (canary has 20000, ours has 15).