diff options
Diffstat (limited to 'kernel/gsp_sema_service.c')
| -rw-r--r-- | kernel/gsp_sema_service.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/kernel/gsp_sema_service.c b/kernel/gsp_sema_service.c index 2b52c0e..d42edab 100644 --- a/kernel/gsp_sema_service.c +++ b/kernel/gsp_sema_service.c @@ -486,9 +486,10 @@ struct sema_svc { * engine-authored guest semaphore was verified with the software apply * skipped (fwd_relay_ok/fwd_relay_skipped_sw), relays that fell back to * the software apply (fwd_relay_fallback), hold re-reads that did not - * see the payload (fwd_relay_verify_fail) and work-item semaphore HPA - * resolution failures (fwd_relay_resolve_fail). All zero while the - * parameter is off. + * see the payload (fwd_relay_verify_fail, shown as hold_verify_fail in + * the state line to keep it distinct from the booter compare's + * verify_fail) and work-item semaphore HPA resolution failures + * (fwd_relay_resolve_fail). All zero while the parameter is off. */ u64 fwd_relay_requested; u64 fwd_relay_ok; @@ -6121,11 +6122,28 @@ static void svc_fwd_fault_deliver(struct nv_vgpu_device *vgpu, pr_info("gsp-phys-fault: FAULT RELAY ch=0x%x hwchid=%u rl=%u except=0x%x engine=%u delivered=%llu\n", ch->h_object, f->chid, f->runlist_id, f->except_type, engine, svc.fwd_fault_delivered); - if (gsp_rm_post_channel_event(vgpu, ch->h_object)) { + /* + * C3 hardening: decode the helper's failure at the call site. -ENODEV + * is a missing RM context / channel handle; -ENOENT is the helper's + * post-attempt path finding no postable event at all (it already + * retried every valid registered event as a fallback), so the exact + * "no event for this handle" reason is not recoverable from the + * return code alone. + */ + ret = gsp_rm_post_channel_event(vgpu, ch->h_object); + if (ret) { + const char *why; + + if (ret == -ENODEV) + why = "no-rm-context-or-handle"; + else if (ret == -ENOENT) + why = "no-postable-event"; + else + why = "event-post-send-failed"; svc.fwd_fault_no_event++; - pr_info("gsp-phys-fault: FAULT RELAY no event ch=0x%x hwchid=%u rl=%u except=0x%x no_event=%llu\n", + pr_info("gsp-phys-fault: FAULT RELAY no event ch=0x%x hwchid=%u rl=%u except=0x%x reason=%s ret=%d no_event=%llu\n", ch->h_object, f->chid, f->runlist_id, f->except_type, - svc.fwd_fault_no_event); + why, ret, svc.fwd_fault_no_event); } } |