vgsp+diag: debugfs sema_setup_demand (armed setup-hold VA set, 0444 seq_file) + pin_gr_stream demand loop reads it (kills dmesg-ring race; 20s resend/300s expiry), bounded 3D raw dump of pre-drop window - MME-PRELUDE emitted gen=2 words=512 (context alive submissions=760); NEW WALL: first beef window loads context + clean MME (mme_esr=80000000) then Class Error ChId 0001 Class 0xc597 Offset 0x1168 (SET_VERTEX_ATTRIBUTE_A(2)) ErrorCode 0x5 + poison; emitted attr runs byte-faithful; next: attr/pipeline prelude (0x1100-0x1200/0x2000-0x2060) + gate first launch on mature prelude - SESSION 153 r1091-r1094

1 files changed, 18 insertions, 0 deletions

diff --git a/tools/guest-diag/pin_gr_stream.py b/tools/guest-diag/pin_gr_stream.py
index e224988..1acef4b 100644
--- a/tools/guest-diag/pin_gr_stream.py
+++ b/tools/guest-diag/pin_gr_stream.py
@@ -273,6 +273,24 @@ def _demand_loop():
             zlen = int(m.group(2))
             for zoff in range(0, min(zlen, 0x8000), 0x1000):
                 track.setdefault(zva + zoff, [now, 0.0])
+        # SESSION 153-CONTINUED-56: the armed setup-hold's demand VA set is
+        # exposed by the service as STATE (debugfs), not as a dmesg row, so
+        # it cannot race the ring rotation under vgsp-sema spam (r1090 lost
+        # the setup-push pages that way). Read it every pass and feed the
+        # same track/resend machinery: new VAs are sent this pass (last=0),
+        # existing ones keep the 20 s resend / 300 s expiry cadence.
+        try:
+            rr = subprocess.run(
+                ["sudo", "-n", "cat",
+                 "/sys/kernel/debug/vgsp/sema_setup_demand"],
+                capture_output=True, text=True, timeout=10)
+            if rr.returncode == 0:
+                for m in re.finditer(r"0x[0-9a-f]+", rr.stdout or ""):
+                    sva = int(m.group(0), 16) & ~0xfff
+                    if sva:
+                        track.setdefault(sva, [now, 0.0])
+        except Exception:
+            pass
         for va in list(track):
             first, last = track[va]
             if now - first > 300.0: