diff options
Diffstat (limited to 'arch/s390/kernel/early.c')
| -rw-r--r-- | arch/s390/kernel/early.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 311a2d6d48e4..3c31609df959 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -329,9 +329,19 @@ static __init void detect_machine_facilities(void) S390_lowcore.machine_flags |= MACHINE_FLAG_TE; if (test_facility(51)) S390_lowcore.machine_flags |= MACHINE_FLAG_TLB_LC; - if (test_facility(129)) + if (test_facility(129)) { S390_lowcore.machine_flags |= MACHINE_FLAG_VX; + __ctl_set_bit(0, 17); + } +} + +static int __init disable_vector_extension(char *str) +{ + S390_lowcore.machine_flags &= ~MACHINE_FLAG_VX; + __ctl_clear_bit(0, 17); + return 1; } +early_param("novx", disable_vector_extension); static int __init cad_setup(char *str) { |