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-rw-r--r--kernel/gsp_sema_service.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/gsp_sema_service.c b/kernel/gsp_sema_service.c
index 6585aaf..a465469 100644
--- a/kernel/gsp_sema_service.c
+++ b/kernel/gsp_sema_service.c
@@ -17173,6 +17173,17 @@ static void svc_fwd_gr_work(void)
ga_va, ga_used, ga_led);
hw_rc = gsp_phys_backend_guest_gr_submit(&gs, &cp);
+ /*
+ * r420b: the backend redirected the launch's QMD release0 to the
+ * module semaphore (rel_mod=1 or no targetable guest release page), so
+ * the ENGINE never writes the guest's own QMD release word. Treat the
+ * word as unobserved so the bounded outcome check (and the hold's
+ * edges) author it in software on every outcome; without this a
+ * rel_mod=1 launch with no deferred release records is never completed
+ * on the guest word and the client hangs (the r414 saxpy stall).
+ */
+ if (cp.qmd_rel_redirected)
+ svc_fwd_req.gr_rel_unobserved = true;
if (!hw_rc) {
svc.fwd_gr_ok++;
} else {