diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/facility.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/include/asm/facility.h b/arch/s390/include/asm/facility.h index 007163f91856..09b406db7529 100644 --- a/arch/s390/include/asm/facility.h +++ b/arch/s390/include/asm/facility.h @@ -34,6 +34,12 @@ static inline int __test_facility(unsigned long nr, void *facilities) */ static inline int test_facility(unsigned long nr) { + unsigned long facilities_als[] = { FACILITIES_ALS }; + + if (__builtin_constant_p(nr) && nr < sizeof(facilities_als) * 8) { + if (__test_facility(nr, &facilities_als)) + return 1; + } return __test_facility(nr, &S390_lowcore.stfle_fac_list); } |