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Diffstat (limited to 'arch/s390/kernel/early.c')
| -rw-r--r-- | arch/s390/kernel/early.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 302ac1f7f8e7..4427ab7ac23a 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -396,6 +396,26 @@ static __init void detect_machine_facilities(void) #endif } +static int __init cad_setup(char *str) +{ + int val; + + get_option(&str, &val); + if (val && test_facility(128)) + S390_lowcore.machine_flags |= MACHINE_FLAG_CAD; + return 0; +} +early_param("cad", cad_setup); + +static int __init cad_init(void) +{ + if (MACHINE_HAS_CAD) + /* Enable problem state CAD. */ + __ctl_set_bit(2, 3); + return 0; +} +early_initcall(cad_init); + static __init void rescue_initrd(void) { #ifdef CONFIG_BLK_DEV_INITRD |