[PATCH v2 2/3] s390/cpufeature: allow for facility bits

Steffen Eiden
2022-07-13T12:56:58Z

From: Heiko Carstens <hca@linux.ibm.com>

Allow for facility bits to be used in cpu features.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
---
arch/s390/kernel/cpufeature.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/s390/kernel/cpufeature.c b/arch/s390/kernel/cpufeature.c
index 9044c75d8b38..170894730fcc 100644
--- a/arch/s390/kernel/cpufeature.c
+++ b/arch/s390/kernel/cpufeature.c
@@ -8,6 +8,7 @@

enum {
TYPE_HWCAP,
+ TYPE_FACILITY,
};

struct s390_cpu_feature {
@@ -34,6 +35,8 @@ int cpu_have_feature(unsigned int num)
switch (feature->type) {
case TYPE_HWCAP:
return !!(elf_hwcap & BIT(feature->num));
+ case TYPE_FACILITY:
+ return test_facility(feature->num);
default:
WARN_ON_ONCE(1);
return 0;
--
2.35.3