ef93a4fa14
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>
2.6 KiB
Phase C+7 — XamTaskCloseHandle re-validation
Gate matrix
| # | gate | result |
|---|---|---|
| 1 | cvar-OFF determinism 50M (3 runs) | ✅ all 3 = 43e80e57beeb77565b47d4bec173e96d (UNCHANGED from C+7 baseline; stable-digest is field-coarse) |
| 2 | Phase B image_loaded_sha256 |
✅ ea8d160e9369328a5b922258a92113efb8d7ce3e1a5c12cc521e375985c91c18 (matches baseline) |
| 3 | Phase A main chain matched-prefix ≥ 102158 | ✅ 102164 (+6 from 102158) |
| 3b | tid=4 → 11 unchanged from 9 | ✅ 9 (no regression) |
| 3c | tid=7 → 2 unchanged from 29 | ✅ 29 (no regression) |
| 3d | tid=12 → 7 unchanged from 2 | ✅ 2 (no regression) |
| 3e | tid=14 → 9 unchanged from 39 | ✅ 39 (no regression) |
| 3f | tid=15 → 10 unchanged from 15 | ✅ 15 (no regression) |
| 4 | Both engines build clean | ✅ |
| 5 | Phase A emitter determinism (2 runs) | ✅ both = eca3ac9a1dd5810bc5b0fa54f58b9ba5 (new baseline; C+7 was 90fb28… but excluded return_value from canonical hash — this run includes it) |
| 6 | Unit tests | ✅ 152 → 156 (+4 new, 0 regressions) |
Stable-digest comparison
Baseline (C+6½ / C+7 keSetEvent): instructions=50M, imports=40470, unimpl=0, draws=0, swaps=1, unique_render_targets=0, shader_blobs_live=0, texture_cache_entries=0
Post C+7 XamTaskCloseHandle: identical. Coarse-grained stats don't yet see the post-XamTaskCloseHandle code path because the next divergence (KeResetEvent return_value) happens within the same boot trajectory at guest cycle 5378583 (12 cycles after the prior cycle 5378571 — i.e. the next instruction has not yet executed any new "interesting" GPU/ allocator work).
Phase A determinism
ours.jsonl (run 1) deterministic-fields md5: eca3ac9a1dd5810bc5b0fa54f58b9ba5
ours-determ.jsonl (run 2): eca3ac9a1dd5810bc5b0fa54f58b9ba5
Byte-identical. New --phase-a det baseline (replacing C+7's
90fb28202b70cb43a63def7a2f8b470d). The change is the
return_value flip at idx 102158 (0 → 1) cascading into a different
event sequence inside the matched window after 102158.
Per-chain summary
| chain | C+7 keSetEvent | C+7 XamTaskCloseHandle | Δ |
|---|---|---|---|
| canary tid=6 → ours tid=1 (main) | 102158 | 102164 | +6 |
| canary tid=4 → ours tid=11 | 9 | 9 | 0 (sister already at end of ours window) |
| canary tid=7 → ours tid=2 | 29 | 29 | 0 (sister already at end of ours window) |
| canary tid=12 → ours tid=7 | 2 | 2 | 0 (different bug: KeWaitForSingleObject ret 258 vs 0) |
| canary tid=14 → ours tid=9 | 39 | 39 | 0 (different bug: XAudio vs RtlEnterCS) |
| canary tid=15 → ours tid=10 | 15 | 15 | 0 |
All gates pass. No regressions.