kfd_process_xnack_mode
if (args->xnack_enabled && !kfd_process_xnack_mode(p, true)) {
if (process_priv.xnack_mode && !kfd_process_xnack_mode(p, true)) {
bool kfd_process_xnack_mode(struct kfd_process *p, bool supported);
process->xnack_enabled = kfd_process_xnack_mode(process, false);