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Diffstat (limited to 'kernel/gsp_sema_service.h')
| -rw-r--r-- | kernel/gsp_sema_service.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/kernel/gsp_sema_service.h b/kernel/gsp_sema_service.h index 8d63a72..94faf82 100644 --- a/kernel/gsp_sema_service.h +++ b/kernel/gsp_sema_service.h @@ -89,6 +89,23 @@ struct sema_vaspace_desc { void gsp_sema_service_vaspace_add(const struct sema_vaspace_desc *desc); void gsp_sema_service_vaspace_del(u32 h_vaspace); + +/* + * r820: a driver-declared kernel-buffer translation from an + * NV2080_CTRL_CMD_GPU_PROMOTE_CTX entry (gpuVirtAddr/gpuPhysAddr/size/ + * physAttr of one context buffer). These buffers - the nvidia-push + * pushbuffer, the progress-tracker segment, the FECS/patch/access-map + * blocks - are kernel-owned, so the userspace pin scanner cannot cover + * them and the page-table walk can answer with a stale/wrong page + * (r817 Xorg GL init: the walk resolved the 64 KB pushbuffer VA to a + * zero page while the promote entry named the real one). The sema + * service consults these records before the learned cache and the walks + * in svc_lookup_trusted; newest statement per VA wins. VA-only bookings + * (zero pa/size) and bNonmapped entries (va=0) are ignored. Records are + * session state, cleared by svc_session_flush. + */ +void gsp_sema_service_promote_add(u64 va, u64 pa, u64 size, u32 phys_attr, + u32 buffer_id); /* * r496j: park a page-directory candidate (from COPY_SERVER_PDES) until a * content-validated walk proves it belongs to a live client; only then is |