diff options
| -rw-r--r-- | drivers/s390/char/sclp_mem.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/s390/char/sclp_mem.c b/drivers/s390/char/sclp_mem.c index 3a7a69615d99..bc515a24b3f2 100644 --- a/drivers/s390/char/sclp_mem.c +++ b/drivers/s390/char/sclp_mem.c @@ -275,6 +275,8 @@ static ssize_t sclp_memmap_on_memory_store(struct kobject *kobj, struct kobj_att rc = kstrtobool(buf, &value); if (rc) return rc; + if (value && !mhp_supports_memmap_on_memory()) + return -EOPNOTSUPP; rc = lock_device_hotplug_sysfs(); if (rc) return rc; |