diff options
Diffstat (limited to 'kernel/gsp_phys_gpu.c')
| -rw-r--r-- | kernel/gsp_phys_gpu.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/gsp_phys_gpu.c b/kernel/gsp_phys_gpu.c index 0c7e1e5..9100959 100644 --- a/kernel/gsp_phys_gpu.c +++ b/kernel/gsp_phys_gpu.c @@ -619,6 +619,25 @@ int gsp_phys_rmcall_gr_qmdvirt_value(void) EXPORT_SYMBOL_GPL(gsp_phys_rmcall_gr_qmdvirt_value); /* + * Explicit-PCAS gate (default 1). The rebuilt launch carries the vendor's + * turingPushPcas(CU_PCAS_TYPE_COPY) pair (SEND_PCAS_A = QMD>>8 followed by + * SEND_SIGNALING_PCAS_B = INVALIDATE|SCHEDULE). The stock guest push does + * not emit these (it relies on the IQ2M window's implied copy PCAS); setting + * this to 0 emits the pure vendor window-only form for the A/B test. + */ +static int gsp_phys_rmcall_gr_pcas_param = 1; +module_param_named(gsp_phys_rmcall_gr_pcas, + gsp_phys_rmcall_gr_pcas_param, int, 0644); +MODULE_PARM_DESC(gsp_phys_rmcall_gr_pcas, + "Emit the explicit SEND_PCAS_A/SEND_SIGNALING_PCAS_B pair in the GR launch block (default 1 = vendor turingPushPcas copy form; 0 = window-only stock form)"); + +int gsp_phys_rmcall_gr_pcas_value(void) +{ + return gsp_phys_rmcall_gr_pcas_param; +} +EXPORT_SYMBOL_GPL(gsp_phys_rmcall_gr_pcas_value); + +/* * Rank-2 qmdwin diagnostic (gsp_phys_rmcall_gr_qmdwin; default 0). When set, * a forwarded GR launch relocates its inline-QMD destination from the guest * QMD VA to a dedicated module page mapped at the ladder's own window-0 VA |