diff options
Diffstat (limited to 'kernel/arch/s390/kernel/cache.c')
| -rw-r--r-- | kernel/arch/s390/kernel/cache.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/arch/s390/kernel/cache.c b/kernel/arch/s390/kernel/cache.c index bff5e3b6d..8ba32436e 100644 --- a/kernel/arch/s390/kernel/cache.c +++ b/kernel/arch/s390/kernel/cache.c @@ -138,6 +138,8 @@ int init_cache_level(unsigned int cpu) union cache_topology ct; enum cache_type ctype; + if (!test_facility(34)) + return -EOPNOTSUPP; if (!this_cpu_ci) return -EINVAL; ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0); |