diff options
| -rw-r--r-- | kernel/gsp_sema_service.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/kernel/gsp_sema_service.c b/kernel/gsp_sema_service.c index 93bcd20..8303c87 100644 --- a/kernel/gsp_sema_service.c +++ b/kernel/gsp_sema_service.c @@ -13197,6 +13197,7 @@ static void svc_gr_data_fill(struct nv_vgpu_device *vgpu) u64 base = wins[w]; u32 p; u32 before = svc_fwd_req.gr_n_data; + bool first_unresolved = false; /* m170: span's first page failed */ u64 pba = 0; u32 pba_ap = 0; u32 span; @@ -13292,6 +13293,18 @@ static void svc_gr_data_fill(struct nv_vgpu_device *vgpu) pa = ipa; ap = (u32)iap; } else if (svc_resolve_va(vgpu, va, &pa, &ap)) { + /* + * m170 (R4a): remember that the very + * first page of this span failed to + * resolve - the fail-closed trigger + * below distinguishes it from the + * benign "0 new pages" of a span + * whose pages an earlier candidate + * already mapped. + */ + if (p == 0 && + svc_fwd_req.gr_n_data == before) + first_unresolved = true; break; } } @@ -13337,6 +13350,24 @@ static void svc_gr_data_fill(struct nv_vgpu_device *vgpu) pr_info("vgsp-sema: svc-gr candidate[%u] base=0x%llx -> %u new pages (total %u)\n", w, base, svc_fwd_req.gr_n_data - before, svc_fwd_req.gr_n_data); + if (is_arg[w] && svc_fwd_req.gr_n_data == before && + first_unresolved) { + /* + * m170 (AGENT-F R4a): a high argument pointer whose + * FIRST page resolved nothing at fill time is the + * partial-operand signature - the launch would forward + * with stale/zero data for that operand (r174: matmul + * cand[2]/[3] probe=none, 0 pages, bad=65536; the + * other operands resolved via pins). Fail closed: mark + * the launch stalled so the m150 hold keeps the entry + * and retries the fill while the pins land (bounded, + * then forwards anyway - never a hang, never silent + * truncation). + */ + svc_gr_data_stalled = true; + pr_err_ratelimited("vgsp-sema: svc-gr data fill: arg base=0x%llx resolved 0 pages; launch held fail-closed\n", + base); + } /* * m150: an argument pointer that resolves zero pages is the * second-client zeros signature; record the walk result per |