diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-08-20 11:48:56 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-08-20 11:48:56 +0200 |
| commit | 40a2ea1bd988e3bbdb07a0708681fdb05cd7d267 (patch) | |
| tree | 05806aaa27a4b0516a14a8ccf703c1501500e588 /arch/s390/kernel/cache.c | |
| parent | a897b5f0393a8a05d230c9248dc5324fb30720a0 (diff) | |
| parent | 196676497f2507966f99abef63bede6a8550f8b3 (diff) | |
Merge branch 'perf/urgent' into perf/core, to pick up fixes before adding more changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/s390/kernel/cache.c')
| -rw-r--r-- | arch/s390/kernel/cache.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/kernel/cache.c b/arch/s390/kernel/cache.c index bff5e3b6d822..8ba32436effe 100644 --- a/arch/s390/kernel/cache.c +++ b/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); |