vgsp: chan alloc/refusal diagnostics (PROMOTE_CTX probe benign); attribution: r958 windows were Xorg init; harness DISPLAY regression fixed; init window retires 2 consecutive cycles (SESSION 153 r962)

1 files changed, 18 insertions, 0 deletions

diff --git a/kernel/gsp_rm_emulation.c b/kernel/gsp_rm_emulation.c
index 7b7e230..fc94b7d 100644
--- a/kernel/gsp_rm_emulation.c
+++ b/kernel/gsp_rm_emulation.c
@@ -3143,6 +3143,24 @@ static void gsp_rm_register_channel(struct gsp_emu_context *ctx, u32 h_object,
 	memcpy(&desc.notifier_as, params + GSPRM_CHAN_NOTIFIER_MEM +
 	       GSPRM_CHAN_MEM_APERTURE, 4);
 
+	/*
+	 * SESSION 153-CONTINUED-15 (draw attribution): every channel-class
+	 * allocation is named with its wire shape before registration, so a
+	 * channel the service silently refuses (gpfifo VA 0 / entries < 2)
+	 * cannot hide behind an absent "registered" line. Bounded.
+	 */
+	{
+		static u32 chan_alloc_log;
+
+		if (chan_alloc_log < 32) {
+			chan_alloc_log++;
+			pr_info("vgsp-rm: chan alloc hObject=0x%x gpfifo=0x%llx ent=%u eng=%u vas=0x%x cid=%u userd=0x%llx/%u notif=0x%llx/%u\n",
+				h_object, desc.gpfifo_va, desc.gpfifo_entries,
+				desc.engine_type, desc.h_vaspace, desc.cid,
+				desc.userd_pa, desc.userd_as,
+				desc.notifier_pa, desc.notifier_as);
+		}
+	}
 	gsp_sema_service_channel_add(&desc);
 }