diff options
Diffstat (limited to 'kernel/gsp_phys_gpu.h')
| -rw-r--r-- | kernel/gsp_phys_gpu.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/gsp_phys_gpu.h b/kernel/gsp_phys_gpu.h index 7d9b695..74e3103 100644 --- a/kernel/gsp_phys_gpu.h +++ b/kernel/gsp_phys_gpu.h @@ -210,6 +210,19 @@ int gsp_phys_rmcall_engine_value(void); int gsp_phys_rmcall_gr_promote_value(void); /* + * Ladder VAS ownership selector (gsp_phys_rmcall_vas_shared; default 0). + * 0 = FERMI_VASPACE_A is allocated IS_EXTERNALLY_OWNED (historical ladder + * behaviour: the client owns page tables, VA bookings and engine-context + * commitment, which is why every host GR promote failed or wedged). + * 1 = SHARED_MANAGEMENT: the ladder still supplies and commits its root PDB + * via SET_PAGE_DIRECTORY (legal for shared management, gpu_vaspace.c:3108) + * while the RM owns the lower page tables and maps/commits engine contexts + * itself, like the normal KMD client (nv_gpu_ops.c:2495). Read at the + * stage-3 VAS alloc; a mid-session change is ignored. + */ +bool gsp_phys_rmcall_vas_shared_value(void); + +/* * Translate a guest GPA to the pinned host PA (gsp_phys_guest_mem ladder * support). The mdev is registered with vfio_register_emulated_iommu_dev(): * its VFIO type-1 container keeps the guest DMA mappings privately, so |