feat_enable_dbell  599 arch/powerpc/kernel/dt_cpu_ftrs.c 	{"processor-control-facility", feat_enable_dbell, CPU_FTR_DBELL},
feat_enable_dbell  600 arch/powerpc/kernel/dt_cpu_ftrs.c 	{"processor-control-facility-v3", feat_enable_dbell, CPU_FTR_DBELL},