vgsp: sema_gl_mme_sa_rearm (bool default 1) gating SA re-arm block for same-boot A/B - CONT-85: newest emissions EXONERATED (version=0 track=-1 flips did not stop poison; 0xbadf1201 = NV_PPRIV_SYS_PRI_ERROR_CODE_FECS_PRI_RESET ringstation latch not MME exception); r1270 first call-launch poisoned with calls HELD + no prelude -> macro execution not required for poison; r1272 rearm=0 EXECUTED launches but Shader Program Header 9/11/18 Error + ESR 0xa2040a00 x5 + ILLEGAL_OPCODE 0x80000004 + Class Error Offset 0000238c Data 00020020, 0 GR-STATE retires; SA-REARM A/B neutral; next: wire missing SPH state for draw (DS SPH 9/11/18) - leading candidate SDM-family entries that sema_gl_sdm_drop=1 drops, replay ahead of window + capture MME_HWW_ESR_INFO 0x404494 at ILLEGAL_OPCODE for PC witness - SESSION 153 r1271-r1272

1 files changed, 18 insertions, 1 deletions

diff --git a/kernel/gsp_phys_booter.c b/kernel/gsp_phys_booter.c
index b008739..3ab4b49 100644
--- a/kernel/gsp_phys_booter.c
+++ b/kernel/gsp_phys_booter.c
@@ -17850,6 +17850,23 @@ MODULE_PARM_DESC(sema_gl_mme_track,
 	"SET_MME_SHADOW_RAM_CONTROL mode emitted before each replayed window (0=TRACK filtering off (default); 1=TRACK_WITH_FILTER; 2=PASSTHROUGH; 3=REPLAY; -1=off)");
 
 /*
+ * SESSION 153-CONTINUED-85: A/B knob for the SA re-arm (the r1237 fix).
+ * Before CONT-84 the calls in the replayed window resolved to the SA state
+ * the prelude left behind (its last captured SA write re-clobbers the slot;
+ * r1231: SA[34]=0 lands last, every draw call resolved to macro 0 and
+ * emitted nothing - and the r1228-phase launches retired). With the re-arm
+ * the calls resolve to the captured IR entries; every call-bearing launch
+ * since (r1245/r1250/r1265/r1270) parks or poisons the front-end. This knob
+ * restores the pre-arm resolution in one boot so the two states can be A/B'd
+ * without a rebuild (0 = do not re-point; default 1 = re-arm).
+ */
+static bool gsp_phys_rmcall_gr_mme_sa_rearm = true;
+module_param_named(sema_gl_mme_sa_rearm, gsp_phys_rmcall_gr_mme_sa_rearm,
+		   bool, 0644);
+MODULE_PARM_DESC(sema_gl_mme_sa_rearm,
+	"Re-emit LOAD_MME_START_ADDRESS_RAM pairs before each replayed window so CALL_MME_MACRO resolves to the captured SA entries (default 1; 0 = pre-arm resolution, A/B)");
+
+/*
  * The same stubbed-slot predicate the launch builder applies (see the
  * sa_stub emit decision): a slot is stubbed when stubbing is on and either
  * the all-slots knob is set, the capture holds no SA entry, or the IR
@@ -18793,7 +18810,7 @@ static u32 gsp_phys_rmcall_build_gr_launch(u32 *pb,
 		 * ahead of the window makes every launch's calls resolve
 		 * to the captured SA entry.
 		 */
-		{
+		if (READ_ONCE(gsp_phys_rmcall_gr_mme_sa_rearm)) {
 			u32 sa_ent[64];
 			u64 sa_mask = gsp_sema_mme_sa_get(sa_ent, 64);
 			u32 r = 0, rearm = 0;