diff options
Diffstat (limited to 'arch/s390/kernel/early.c')
| -rw-r--r-- | arch/s390/kernel/early.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 324f1c147a41..d756315b7985 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -364,6 +364,18 @@ static inline void save_vector_registers(void) #endif } +static int __init topology_setup(char *str) +{ + bool enabled; + int rc; + + rc = kstrtobool(str, &enabled); + if (!rc && !enabled) + S390_lowcore.machine_flags &= ~MACHINE_HAS_TOPOLOGY; + return rc; +} +early_param("topology", topology_setup); + static int __init disable_vector_extension(char *str) { S390_lowcore.machine_flags &= ~MACHINE_FLAG_VX; |