diff options
Diffstat (limited to 'kernel/gsp_phys_gpu.c')
| -rw-r--r-- | kernel/gsp_phys_gpu.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/kernel/gsp_phys_gpu.c b/kernel/gsp_phys_gpu.c index 9b7235b..7932268 100644 --- a/kernel/gsp_phys_gpu.c +++ b/kernel/gsp_phys_gpu.c @@ -1075,6 +1075,28 @@ int gsp_phys_rmcall_gr_data_prewin_value(void) EXPORT_SYMBOL_GPL(gsp_phys_rmcall_gr_data_prewin_value); /* + * B-2: grown boot-fixed data-bounce region (gsp_phys_gr_data_region; default + * 1). When set, gsp_phys_rmcall_pdb_build plants the 16384-page (64 MiB) + * region at GSP_PHYS_RMCALL_GR_DATA_BOUNCE_VA0 (PD0 80..111) and the SVC + * relocates operand pages into it; the booter's copy-in/copy-out index the + * grown chunk. When 0, everything falls back to the legacy 205-page / + * 68-pages-per-pointer window below the mail page, for one-flip A/B + * trialing. Boot-fixed: it is read by the stage-3 plant, so set it at + * insmod, not at runtime. + */ +static int gsp_phys_gr_data_region_param = 1; +module_param_named(gsp_phys_gr_data_region, + gsp_phys_gr_data_region_param, int, 0644); +MODULE_PARM_DESC(gsp_phys_gr_data_region, + "Use the grown 64 MiB data-bounce region for GR operands (default 1; 0 = legacy 205-page window)"); + +int gsp_phys_gr_data_region_value(void) +{ + return gsp_phys_gr_data_region_param; +} +EXPORT_SYMBOL_GPL(gsp_phys_gr_data_region_value); + +/* * m113: after planting the launch's data mappings, re-register the VAS page * directory (UNSET+SET) to force the server walker to re-snapshot the tree; * all evidence says the SM walker resolves only the commit-time tree, and |