diff options
Diffstat (limited to 'kernel/gsp_phys_gpu.c')
| -rw-r--r-- | kernel/gsp_phys_gpu.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/kernel/gsp_phys_gpu.c b/kernel/gsp_phys_gpu.c index 3429507..1029b2e 100644 --- a/kernel/gsp_phys_gpu.c +++ b/kernel/gsp_phys_gpu.c @@ -746,6 +746,27 @@ int gsp_phys_rmcall_faultbuf_sys_value(void) EXPORT_SYMBOL_GPL(gsp_phys_rmcall_faultbuf_sys_value); /* + * m69 window-0 shadow pool (gsp_phys_rmcall_gr_shadow_win0; default 0). When + * set, the forwarded GR launch copies the QMD's program/param pages into the + * window-0 shadow pool (module pages at VAs 0x108000..0x10f000, PTEs planted + * at stage 3 in the proven GPFIFO/PB/QMDWIN small-PT line) and rewrites the + * QMD pointer pairs there, instead of mapping them through the window-1 + * scratch range whose DMA_UPDATE_PDE_2 PT chain has never been proven + * readable by the GR engine core. + */ +static int gsp_phys_rmcall_gr_shadow_win0_param; +module_param_named(gsp_phys_rmcall_gr_shadow_win0, + gsp_phys_rmcall_gr_shadow_win0_param, int, 0644); +MODULE_PARM_DESC(gsp_phys_rmcall_gr_shadow_win0, + "Copy forwarded GR program/param pages into the window-0 shadow pool (proven PT line; default 0)"); + +int gsp_phys_rmcall_gr_shadow_win0_value(void) +{ + return gsp_phys_rmcall_gr_shadow_win0_param; +} +EXPORT_SYMBOL_GPL(gsp_phys_rmcall_gr_shadow_win0_value); + +/* * Ladder VAS ownership selector (gsp_phys_rmcall_vas_shared; default 0). * The H1 GR promote wall is a direct consequence of the ladder's * externally-owned FERMI_VASPACE_A: with IS_EXTERNALLY_OWNED the RM treats |