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| author | Janosch Frank <frankja@linux.ibm.com> | 2021-03-23 10:09:50 +0000 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2021-03-24 16:06:19 +0100 |
| commit | df2e400e07ad53a582ee934ce8384479d5ddf48b (patch) | |
| tree | c96eb2c56a8dbc43047661ca4bf81ed191638955 /arch/s390/kernel/uv.c | |
| parent | 5671d9718faf8c8520228c2acb91f3c0cc64192b (diff) | |
| download | linux-df2e400e07ad53a582ee934ce8384479d5ddf48b.tar.gz | |
s390/uv: fix prot virt host indication compilation
prot_virt_host is only available if CONFIG_KVM is enabled. So lets use
a variable initialized to zero and overwrite it when that config
option is set with prot_virt_host.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Fixes: 37564ed834ac ("s390/uv: add prot virt guest/host indication files")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/uv.c')
| -rw-r--r-- | arch/s390/kernel/uv.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c index 04b6463d8f9f..cbfbeab57c3b 100644 --- a/arch/s390/kernel/uv.c +++ b/arch/s390/kernel/uv.c @@ -420,7 +420,13 @@ static ssize_t uv_is_prot_virt_guest(struct kobject *kobj, static ssize_t uv_is_prot_virt_host(struct kobject *kobj, struct kobj_attribute *attr, char *page) { - return scnprintf(page, PAGE_SIZE, "%d\n", prot_virt_host); + int val = 0; + +#if IS_ENABLED(CONFIG_KVM) + val = prot_virt_host; +#endif + + return scnprintf(page, PAGE_SIZE, "%d\n", val); } static struct kobj_attribute uv_prot_virt_guest = |